Media Releases

PolyU uncovers key environmental and cognitive factors influencing dual-task walking to personalise stroke rehabilitation

Multitasking while walking – be it mentally drafting a grocery list or replying to a text message on a phone—is simply second nature to many. For stroke survivors with weakened mobility and cognitive capabilities, however, this common practice of “dual-task walking”, can present a formidable challenge. A research team at The Hong Kong Polytechnic University (PolyU) that pioneered early studies on dual-task walking and fall risk in post-stroke individuals has conducted a follow-up study, which reveals that the interaction of cognitive task type and complexity can influence the degree and pattern of “dual-task interference” (DTI), resulting in a slip in physical and mental performance. The findings offer valuable clinical implications for the design of dual-task assessment and training for stroke rehabilitation. Led by Prof. Marco PANG, Shun Hing Education and Charity Fund Professor in Rehabilitation Sciences, Chair Professor of Neurorehabilitation and Head of the Department of Rehabilitation Sciences at PolyU, together with Prof. Charlotte TSANG, Assistant Professor from the Department, the research assessed the dual-tasking ability of individuals with chronic stroke. During the study, participants were assessed on two mobility conditions, namely walking on flat ground and navigating obstacles, while they simultaneously performed various cognitive tasks, ranging from auditory discrimination to shopping list recall and serial subtraction. The research team adopted a standardised metric known as the “dual-task effect” (DTE) to measure the patients’ performance in mobility (walking distance) and cognitive function (accuracy in performing tasks). The findings revealed that the patients were often affected by DTI when walking and simultaneously carrying out cognitive exercises. The interference led to a decline in performance in the cognitive task, the walking task or both, ultimately increasing fall risks and hindering a return to a normal life. The study also demonstrated that dual-task walking performance is highly task-dependent. Cognitive tasks that involve internally driven responses, such as performing serial subtractions, made greater demands on working memory, mental tracking and internal processing, thereby inducing greater DTI. The greatest mobility interference was observed during these internally driven tasks, resulting in clinically significant reductions in walking distance. Furthermore, the combined, interactive effects of task type and complexity affected dual-task performance more significantly than either factor alone. Prof. Pang elaborated, “The results of our study underscore the importance of individualised assessments to better understand the dual-task challenges faced by post-stroke patients. Dual-task exercise training has been shown to reduce DTI and decrease fall risk during walking. Clinically, it is essential to develop a comprehensive DTE profile to evaluate post-stroke patient mobility. Standardised assessments involving cognitive tasks across various domains and complexities are key to guiding effective functional training for individuals with chronic stroke.” Prof. Tsang added, “As strokes affect different brain regions responsible for various cognitive and physical functions, a one-size-fits-all approach that targets only a single cognitive domain and difficulty level is inadequate for identifying crucial functional deficits in stroke survivors. The precise identification of the specific functional deficits, followed by personalised training, is vital for achieving effective rehabilitation outcomes.” The study sheds light on the need to move beyond traditional, standalone functional training and to incorporate realistic, dual-task scenarios of the type that patients would encounter in daily life to improve rehabilitation efficacy. The paper, titled “Effects of Cognitive Task Type and Complexity on Dual-Task Interference During Level-Ground Walking and Obstacle Negotiation in Individuals with Stroke”, has been published in Neurorehabilitation and Neural Repair. ***END***

PolyU launches flagship I&T, investment and industry matching event series to deepen regional collaboration across GBA, Yangtze River Delta, Jing-Jin-Ji and Central China hubs

The Hong Kong Polytechnic University (PolyU) has been actively aligning with national development strategies. Leveraging its multidisciplinary research strengths, the University addresses the evolving economic and industrial needs of Chinese Mainland provinces and municipalities, supporting the Nation in accelerating the realisation of self-reliance on high‑standard technology. Today, PolyU hosted the launch ceremony of the flagship PolyU Innovation Investment Roadshow Series (PIIRS) in Qianhai, Shenzhen. The event heralded the establishment of an integrated ecosystem platform for innovation and technology (I&T), investment and industry matching. The platform is designed to accelerate collaborative I&T development across four key regional innovation hubs: the Guangdong-Hong Kong-Macao Greater Bay Area (GBA), the Yangtze River Delta, the Beijing-Tianjin-Hebei (Jing-Jin-Ji) region and Central China. Featuring the inaugural PIIRS roadshow alongside the award presentation ceremony of the PolyU x KAUST International Future Challenge (Saudi Arabia Track), the event convened over 300 distinguished guests, including government officials, academic leaders, entrepreneurs and venture capital representatives. It underscored PolyU’s dynamic innovation and entrepreneurship ecosystem while highlighting the University’s track record in advancing deep integration across government, industry, academia, research and investment sectors. To support national I&T development strategy and provide cross-border development and application scenarios for research and startup projects, PolyU has established an extensive and robust translational research network across the Chinese Mainland. This network comprises 12 PolyU Mainland Translational Research Institutes across different cities, the PolyU-Qianhai Disruptive Technology and Innovation Research Centre (QHRC) and two Shenzhen-based research institutes. Capitalising on these network resources, PIIRS roadshows will take place on a rotational basis across the four target national innovation hubs of GBA, the Yangtze River Delta, the Jing-Jin-Ji region and Central China. Combining project pitches, technology showcases and matchmaking sessions, the platform conducts targeted pairing aligned with specific regional industrial demands.  By prioritising high-value innovations with strong commercialisation potential, PIIRS connects PolyU researchers and startup teams directly with strategic investors and industrial partners, accelerating technology transfer, empowering local industrial upgrades and driving socioeconomic development, contributing to national I&T development. Prof. Jin-Guang TENG, President of PolyU, remarked that PolyU’s research shall focus on pressing social needs and industrial challenges, consistently delivering world-leading, implementable and valuable research outcomes. He also noted that the commercialisation of research outcomes hinges on capital empowerment, validation in industrial scenarios and support from market resources. It is therefore critical to establish collaborative channels linking startup teams, investment institutions, leading enterprises and government resources. He hopes to join hands with all stakeholders to build a win-win innovation and entrepreneurship ecosystem, thereby contributing to national technological advancement and the high-quality development of the Guangdong-Hong Kong-Macao Greater Bay Area. Supported by QHRC, the inaugural PIIRS roadshow featured pitching sessions and an interactive exhibition showcasing over 40 innovative projects led by PolyU academics, researchers, alumni and students. Featured technologies span the six high-growth domains of advanced manufacturing and innovative materials, aerospace and aviation technology, artificial intelligence and digital economy, culture and creativity, life sciences and healthcare, and smart city and sustainable development. A standout team at the roadshow was Z-TRAK SPACE, a startup founded by ZHANG Zihan, an undergraduate of the University’s Department of Aeronautical and Aviation Engineering, alongside a team of PolyU students and seasoned aerospace industry specialists. To tackle key industry bottlenecks, such as high launch costs, rigid scheduling and a lack of customised services for small and medium-sized satellites, the team developed Fission, the world’s first reusable launch vehicle engineered specifically for small and medium payloads. The startup has raised nearly RMB 100 million in cumulative funding and signed launch contracts for 37 satellites, illustrating PolyU’s ability to successfully connect deep-tech startups with venture capital and industry pipelines. The event featured a fireside chat moderated by Prof. Christopher CHAO, PolyU Senior Vice President (Research and Innovation), themed Uniting & Empowering: Fundraising Synergies and Breakthrough Pathways for Translating Frontier Technology. PolyU academics joined prominent venture capitalists from Shenzhen Angel FOF, China Prosperity Capital and Shenzhen Leaguer Co., Ltd. in exploring strategies for commercialising deep-tech outcomes and sustaining a vibrant entrepreneurship ecosystem.  Additionally, Ms CHEN Rui, PolyU alumna and Founder cum Chief Executive Officer of BOTINKIT, a global supplier of digital kitchen solutions, delivered the presentation Food Physics AI Ushering in a New Industry Paradigm: Defining Your Track in Uncharted Territory, sharing actionable insights on scaling technology enterprises and market expansion.  Elaborating on the institutional support available to enterprise founders, Prof. Zijian ZHENG, PolyU Vice President (Knowledge Transfer), highlighted the comprehensive resources provided by the PolyVentures ecosystem. He emphasised that the University continuously strengthens its strategic blueprint for research and knowledge transfer. PolyU strives to advance market-demand-driven innovative research, expand its research translation network in the Chinese Mainland, and actively establish innovation and entrepreneurship hubs in Hong Kong, the Chinese Mainland and overseas. These initiatives empower PolyU startups to pursue cross-border and global expansion, cultivate cross-regional collaboration and elevate the University’s global impact. The event also marked the conclusion of the “PolyU x KAUST International Future Challenge” (Saudi Arabia Track), co-organised with King Abdullah University of Science and Technology (KAUST). Over 20 deep-tech startup teams competed, with four top ventures awarded the Diamond Cup, Gold Award, Silver Award and Bronze Award respectively. As the first overseas track of the PolyU International Future Challenge, this collaboration signifies a major milestone in PolyU’s strategic alliance with KAUST and opens a new chapter in I&T collaboration between Hong Kong and Saudi Arabia. Some of the startup teams participating in the inaugural PIIRS roadshow. Representatives from PolyU, KAUST and Hong Kong Science and Technology Parks Corporation pose with the top four winning teams of the “PolyU x KAUST International Future Challenge” (Saudi Arabia Track). ***END***

Two PolyU young scholars named 2025 “MIT Technology Review Innovators Under 35 China”, underscoring University’s commitment to nurturing research excellence

Two outstanding young scholars from The Hong Kong Polytechnic University (PolyU), Prof. Tsz-woon Benedict LO, Associate Head and Associate Professor of the Department of Chemistry, and Dr Jiaxin LV, Research Assistant Professor of the Department of Industrial and Systems Engineering, have been named on the 2025 “MIT Technology Review Innovators Under 35 China” (TR35 China) list in the “Visionaries” and “Inventors” categories, respectively. They are recognised for their pioneering research achievements in catalytic science and advanced manufacturing technologies, honouring their excellence in transforming classic technologies into novel applications and developing new cutting-edge technologies. Securing two of the five spots awarded to Hong Kong university scholars this year, PolyU further demonstrates its exceptional research strength and unwavering commitment to fostering young research talent and driving frontier innovation. Prof. Christopher CHAO, Senior Vice President (Research and Innovation) of PolyU, congratulated the two scholars on receiving the prestigious honour, stating, “We are thrilled to see PolyU’s young talents demonstrating exceptional strength on the international research stage and addressing global challenges through pioneering achievements. PolyU has long been committed to supporting young scientists in advancing frontier research and technology transfer. Since launching the ‘Young Innovative Researcher Award’ in 2022, PolyU has sought to recognise young innovators with originality and breakthrough potential. PolyU will continue to provide robust support for young scholars and nurture a new generation of research leaders who will help shape the future.” Prof. Lo developed the synchrotron resonant soft X-ray diffraction (RSXRD) technique, achieving a major breakthrough beyond the limits of conventional methods. In an international first, his work enables, the three-dimensional atomic-resolution mapping of framework aluminium (Al) in industrial-grade zeolite catalysts. This landmark achievement, published in Science in 2025, provides atomic-level evidence for the rational design of zeolites, definitively resolving the decades-long “black box” surrounding the precise spatial arrangement of active sites. Delivering high precision, selectivity and energy efficiency in catalytic processes without requiring modifications to existing factory reactor hardware, the industrial value of this technique has been validated through collaborative projects. It offers significant scientific and practical benefits for improving carbon-resource conversion efficiency and helping address global climate challenges. Dr Lv developed the Multi-container Extrusion (MCE) technology, which enables the integrated, seamless manufacturing of ultra-wide, thin-walled light alloy components that previously required segmented welding. This innovation increases profile width to more than three times that of traditional methods while reducing extrusion pressure by 70% to 90%. By establishing multi-scale material models and integrating artificial intelligence-assisted optimisation, she has significantly shortened product development cycles, holding four cross-border core patents as the primary inventor and patentee. This original technology was successfully commercialised in 2024, driving the establishment of a 6,500-ton industrial production line. When applied to passenger vehicles, these structural components achieve a potential weight reduction of up to 50% and carbon emission reductions of approximately 30%, comprehensively rewriting the manufacturing standards for large-scale lightweight components. Established by the MIT Technology Review, the annual TR35 global list recognises outstanding young technological innovators across multiple frontier tech and industrial fields. The TR35 China regional selection was established in 2017 to recognise exceptional and internationally influential young scientific and technological leaders in China.   ***END***

PolyU ranks among leading universities in multiple RGC funding schemes, underscoring distinctive research leadership

Four research projects of The Hong Kong Polytechnic University (PolyU) have received support from the Research Grants Council’s (RGC) funding exercises in 2026/27, amassing total funding of over HK$124 million. PolyU ranks high among local universities in terms of the number of funded projects: two interdisciplinary artificial intelligence (AI) projects supported by the Theme-based Research Scheme (TRS) will drive the development of green fuels and corporate AI risk management, while the other two, supported by the Areas of Excellence (AoE) Scheme and the Strategic Topics Grant (STG) respectively, cover the fields of smart manufacturing and the silver economy. PolyU will continue to harness its research prowess, advancing high-quality socio-economic development for the benefit of society. Prof. Christopher CHAO, Senior Vice President (Research and Innovation) of PolyU, said, “We are grateful for the RGC’s robust support for PolyU’s research excellence. The awarded projects reflect our strength in interdisciplinary research, integrating AI with different academic disciplines to spearhead innovative development of green energy, smart manufacturing, the economy and corporate governance; and contributing to the development of the silver economy in Hong Kong. As a global top 50 university, PolyU will continue to capitalise on its competitive edge in world-class research and top talent, sparing no effort in fostering knowledge transfer and translating frontier research into impactful solutions to drive innovation across diverse industries, supporting Hong Kong’s development into an international innovation and technology centre.” The AoE Scheme aims to provide support to universities funded by the University Grants Committee to build upon their existing strengths and develop them into areas of excellence. The purpose of the TRS is to focus academic research on themes of strategic importance to Hong Kong's long-term development, while the STG supports collaborative research in specific areas which can help address important issues for Hong Kong. The University’s projects that were awarded funding are as follows: 1. AoE Scheme Project Coordinator Prof. George Q. HUANG Chair Professor of Smart Manufacturing of the Department of Industrial and Systems Engineering and Director of the PolyU Research Institute for Advanced Manufacturing Project Title Centre of Smart Manufacturing Abstract This project aims to establish the Centre of Smart Manufacturing to pioneer next‑generation Industry 4.0 technologies. It introduces two foundational breakthroughs: Cyber‑Physical Computers (CPCs) and the Cyber‑Physical Internet, orchestrated by a Cyber‑Physical Operating System. CPCs computerise smart micro‑factories under a typical computer architecture, enabling operations to be processed like CPU instructions with cyber‑physical visibility and spatial‑temporal traceability. Crucially, CPCs incorporate Out‑of‑Order Execution algorithms to optimise workflows and minimise uncertainties through an in‑memory “look around” mechanism. Driven by a federated architecture of multidisciplinary Generative AI models and a unique group‑chat prompt-engineering framework, the system enables real‑time collaborative decision‑making between AI and human experts. Pilot studies deploying “Factory on Chips” scenarios will demonstrate enhanced efficiency and resilience across interconnected supply networks, creating strategic impact on Hong Kong’s logistics, trading and producer services, and reinforcing the City’s role as a hub for smart manufacturing‑enabled economic growth. Funding Approximately HK$47.88 million 2. TRS Project Coordinator Prof. WANG Lianzhou Chair Professor of Energy Materials of the Department of Chemistry and Hong Kong Global STEM Scholar Project Title Intelligent Artificial Photosynthesis Abstract This project aims to establish an Intelligent Artificial Photosynthesis platform to advance solar-driven greenhouse gas carbon dioxide conversion into storable green fuels. To resolve catalyst efficiency bottlenecks, the project will develop a closed-loop “Design—Make—Test—Learn” material discovery engine that combines AI-guided predictions with an automated catalyst synthesis and screening system. The project will also move beyond laboratory discoveries, developing modular solar fuel panels that can operate under natural sunlight. Ultimately, the project aims to combine AI, cutting-edge chemistry and smart engineering to deliver storable green fuels like methanol. The platform will be committed to accelerating the transition to carbon neutrality, securing future energy supply chains and turning scientific breakthroughs into viable commercial technologies. Funding Approximately HK$48.83 million Project Coordinator Prof. Feng TIAN Associate Professor of the School of Accounting and Finance Project Title Managing AI Risk for Businesses in Hong Kong Abstract This project aims to develop a comprehensive AI risk management framework tailored to Hong Kong’s business environment and grounded in evidence‑based analysis and forward‑looking forecasts. It investigates corporate AI adoption patterns across firms and occupations, highlighting the implications for talent development and workforce planning. The study examines the unauthorised use of generative AI in corporate disclosures and analysts’ reports, assessing its impact on information quality and capital market outcomes. It further analyses compliance, operational and misinformation risks. Annual qualitative studies in collaboration with industry partners will be conducted to forecast future AI application risk. Anticipated deliverables include an open‑access AI risk management service, algorithms to detect AI‑generated misinformation and policy reports. These outcomes will strengthen corporate governance and informed policymaking, ultimately supporting Hong Kong’s long-term drive towards responsible AI adoption and high-quality development. Funding Approximately HK$10.84 million 3. STG Project Coordinator Prof. Xue BAI Professor of the Department of Applied Social Sciences and Director of the PolyU Research Centre for Gerontology and Family Studies Project Title Empowering an Inclusive, Age-Friendly Silver Economy in Hong Kong: From Longitudinal Evidence to Intergenerational Multi-stakeholder Action Abstract As Hong Kong rapidly transitions into a super-aged society, adults aged 65 and above are projected to comprise over one-third of the population by 2043. Despite a large and growing global “silver” market, research indicates that fewer than a quarter of silver consumers are satisfied with current market offerings, while financial insecurity remains widespread. To resolve these issues, the project establishes a pioneering "Silver Evidence-to-Action Empowerment" framework. It adopts a dual-engine strategy: enhancing silver consumers’ financial capability, preparedness and well-being on the demand side, while building age-friendly market capacity to meet more informed needs on the supply side. This interdisciplinary initiative leverages a representative longitudinal survey of over 5,000 silver consumers to identify genuine needs and key market drivers. Through co-creation workshops with intergenerational ambassadors and multi-stakeholders, the team will translate findings into evidence-based, “Motivational Interviewing-guided” interventions. These interventions will be delivered through flexible in-person and digital platforms, with their effectiveness rigorously evaluated via cluster randomised controlled trials. Ultimately, the project aims to position Hong Kong as a global silver economy leader—driving policy, education and industry towards inclusive growth and an age-friendly society. Funding HK$16.63 million ***END***

PolyU research reveals fat distribution as key to brain health, with visceral fat accumulation significantly accelerating brain ageing and showing much stronger association than BMI

The impact of obesity on brain ageing and the risk of dementia has long been a concern in the medical community. In clinical practice, body mass index (BMI) is commonly used as an assessment indicator, but it does not accurately reflect differences in fat accumulation across various body regions. A recent study by The Hong Kong Polytechnic University (PolyU) has revealed that fat distribution in specific body regions is significantly and distinctly associated with brain structure and cognitive function. In particular, visceral fat was found to accelerate brain ageing and lead to cognitive decline, having more detrimental impact on brain health than any other type of fat. Led by Prof. Anqi QIU, Chair Professor of Neuroinformatics of the PolyU Department of Health Technology and Informatics, Director of the Mental Health Research Centre and Global STEM Scholar, a PolyU research team conducted the world’s first large-scale multimodal study to systematically explore the correlation between regional adiposity and brain structure, functional connectivity, and cognitive performance. The study provides a new scientific basis for research into Alzheimer’s disease, vascular dementia and other age-related brain disorders. The findings have been published in the international journal Nature Mental Health. The research has shown that BMI alone is insufficient when assessing brain decline and cognitive ageing, whereas regional adiposity is an indispensable indicator. This milestone in neuro-epidemiological research will assist the healthcare sector in developing more precise and personalised brain health prevention and intervention strategies. The research team conducted a multidimensional correlation analysis of health data from over 18,000 participants in the UK Biobank, examining the relationship between regional adiposity data measured using dual-energy X-ray absorptiometry and results from multimodal brain imaging and cognitive testing. The findings revealed that fat accumulation in the arms, legs, trunk and visceral regions was differentially associated with, and affected, neural systems, including the morphology of the sensorimotor, limbic, default mode and subcortical–cerebellar–brainstem systems. The study specifically noted that visceral fat was the only type of fat directly linked to compromised white-matter integrity in the brain. White matter acts as the “cables” for transmitting neural signals in the brain, and damage to it is closely aligned with the pathogenic mechanisms of vascular cognitive impairment and cerebral small vessel disease. Prof. Qiu said, “Fat in different parts of the body maps out entirely different trajectories of change in the brain, which cannot be detected by body weight or BMI alone. Our analytical model clearly demonstrates how fat in different regions causes differential damage to brain systems. Notably, regional adiposity is an intervenable and modifiable health risk factor. Reducing visceral fat through targeted lifestyle interventions can open up new pathways for the proactive prevention and treatment of neurodegenerative diseases.” The research team suggested that visceral adiposity might be the most harmful type of regional adiposity for the brain due to its tendency to trigger chronic inflammation in the body, which may then lead to neuroinflammation. This study establishes a comprehensive analytical framework and highlights the importance of targeted reduction of visceral fat to help maintain mental acuity and prevent dementia. ***END***

Four PolyU scholars honoured as RGC Senior Research Fellows and Research Fellows, spearheading innovations in advanced manufacturing, mathematical finance, neuroscience and IoT

The Hong Kong Polytechnic University (PolyU) is committed to pursuing world-leading research and innovation for societal benefits. In the Research Grants Council’s (RGC) Senior Research Fellow Scheme (SRFS) and Research Fellow Scheme (RFS) 2026/27, four distinguished PolyU scholars have been awarded fellowships. The Schemes offer support for the awardees’ continued innovations and breakthroughs in diverse frontier fields, spanning advanced semiconductor manufacturing, mathematical finance, cognitive neuroscience and Internet of Things (IoT) applications. Prof. Christopher CHAO, Senior Vice President (Research and Innovation) of PolyU, extended his congratulations to the awardees and said: “These prestigious fellowships are a resounding testament to PolyU scholars’ outstanding research achievements. Their projects exemplify the University’s determination to pursue research excellence and its commitment to advancing world‑leading innovation. PolyU will continue to cultivate a vibrant research environment, providing significant resources and support for our researchers to focus on frontier R&D. Through innovative solutions, we will continue to create tangible societal benefits while inspiring and nurturing the next generation of research talent to propel Hong Kong’s development as an international innovation and technology hub.” The RGC SRFS and RFS schemes aim to provide sustained research support for outstanding full Professors and Associate Professors with relief from teaching and administrative duties, so enabling them to more fully focus on R&D and nurture the next generation of research talent for Hong Kong. Each of the two schemes award 10 fellowships annually, with awardees being conferred the title “RGC Senior Research Fellow” or “RGC Research Fellow” and provided a grant of around HK$8.5 million and HK$5.6 million respectively. The successful projects showcase the University’s exceptional strength in bridging theoretical breakthroughs with real-life applications, underscoring the world-class calibre of PolyU research and the University’s commitment to translating frontier knowledge into impactful solutions that address pressing global challenges. The PolyU awardees are as follows. RGC SRFS 2026/27 Awardee Project Title Abstract Prof. Benny CHEUNG Chi-fai, Chair Professor of Ultra-precision Machining and Metrology of the Department of Industrial and Systems Engineering; Director of the State Key Laboratory of Ultra-precision Machining Technology at PolyU A multi-mode ultra-through-focus light-field-spectrometry microscopy (MULFSM) for in-situ measurement of nanostructured surfaces in semiconductor manufacturing This project aims to develop MULFSM and its AI-data processing method to enable simultaneous and in situ qualitative and quantitative measurement and inspection of nanostructured surfaces during semiconductor manufacturing and related industrial applications. This research will enhance scientific understanding of MULFSM and deliver significant impact on both research and industry in relation to nanostructured surface manufacturing for the global semiconductor sector. Prof. DAI Min, Chair Professor of Applied Statistics and Financial Mathematics of the Department of Applied Mathematics and the School of Accounting and Finance; Director of the Research Centre for Quantitative Finance at PolyU Multi-dimensional free boundary problems in finance: Theory and algorithms This project aims to address key challenges in financial decision-making that can be formulated as multi-dimensional free boundary problems. Through a comprehensive theoretical and numerical study of four interconnected themes, including deep learning and continuous-time reinforcement learning applied to portfolio selection, corporate finance and option pricing, this research promises significant advances in stochastic control theory, computational methods and financial modeling. Its outcomes will potentially benefit policymakers and investors by improving market understanding and risk management.   RGC RFS 2026/27 Awardee Project Title Abstract Prof. Bolton CHAU, Associate Professor of the Department of Rehabilitation Sciences, Associate Director of the Mental Health Research Centre at PolyU How distractors bias choices: Investigating mechanisms through computational modelling, neuroimaging, neurochemistry and neurostimulation This project aims to investigate how human decisions are biased by distracting information via employing advanced cognitive neuroscience techniques. Using computational modelling, functional magnetic resonance imaging (fMRI), magnetic resonance spectroscopy (MRS) and transcranial magnetic stimulation (TMS), the research will examine neurocomputational mechanisms of decision-making biases. Its findings will hold key practical implications for enhancing evidence-based policy-making, promoting unbiased decision-making and developing treatments for psychiatric disorders. Prof. ZHENG Yuanqing, Professor of the Department of Computing at PolyU Software-defined edge radio access networks: System architecture and applications This project aims to design and implement a new software-defined wireless network architecture to address backhaul network pressure in traditional Cloud Radio Access Networks (CRAN). By processing signals locally through an efficient packet processing pipeline, this research will accelerate radio access network innovation to support massive IoT connectivity for smart metering, precision agriculture and the emerging low-altitude economy, facilitating large-scale concurrent communication, wireless sensing and carrier frequency shifting. ***END***

PolyU develops durable shade-stable perovskite–organic tandem solar cells, advancing thin-film solar technology application

It is common for solar panels to be shaded by trees, clouds, birds or buildings. For thin-film solar technologies, however, such shading can cause the shaded areas to develop reverse bias stress (negative voltage), which can reduce power-generation efficiency and even damage the modules of the solar cell. A research team at The Hong Kong Polytechnic University (PolyU) has successfully developed a new generation of perovskite–organic tandem solar cells (POTSCs) that not only deliver high power-generation efficiency but also effectively resist the damage caused by negative voltage. Even under an extreme reverse-bias of –40 V, the tandem devices retain more than 90% of their initial power-generation efficiency, far surpassing all existing thin-film solar technologies — marking a key step towards the practical application of thin-film solar technology. Thin-film solar technologies, such as cadmium telluride (CdTe), copper indium gallium selenide (CIGS), perovskite and organic solar cells, offer the distinct advantages of their light weight, flexibility and cost-effective manufacturing. However, these materials share a common weakness: owing to their electron–ion hybrid conducting properties, once a solar cell is partially shaded and generates negative voltage, its sustained performance becomes difficult and components may even be damaged. The ability to resist reverse bias is therefore key to determining whether thin-film solar technology is durable and capable of stable, long-term operation. Organic solar cells (OSCs) have made significant strides in both efficiency and durability in recent years. Yet their behaviour under reverse-bias condition and underlying charge transport mechanisms in bulk heterojunctions (the power-generating active layer inside the cell, formed by blending two materials), remains largely unexplored by the scientific community. Filling the related knowledge gaps is an indispensable step towards the practical application of thin-film solar technology. Prof. LI Gang, Chair Professor of Energy Conversion Technology of the PolyU Department of Electrical and Electronic Engineering, Sir Sze-yuen Chung Professor in Renewable Energy, and Associate Director of the PolyU Research Institute for Smart Energy (RISE), and his research team have tackled the often-overlooked yet critical aspect of reverse-bias. Prof. Li said, “We have achieved important advances in the stability of OSCs and POTSCs under challenging reverse-bias conditions. Our research makes breakthrough contributions to the understanding of both device operation and durability in organic and perovskite solar technologies.” The reason OSCs are damaged under reverse-bias lies in defects known as deep trap states within the bulk heterojunction. These are invisible traps in the solar cell material that immobilise the charges responsible for power generation, reducing the cell’s efficiency and even causing damage. The team achieved a breakthrough through its innovative approaches and strategic interventions. By suppressing isolated acceptor clusters within the donor-acceptor intermix region (the area at the power-generating core of the cell where the two materials responsible for releasing and receiving charges are blended), the team successfully minimised the above-mentioned defects and developed high-performance OSCs with an irreversible breakdown voltage exceeding -35 V. In other words, as long as the negative voltage does not exceed -35 V, the cell will not be permanently damaged. This substantially enhances damage resistance and establishes a new benchmark for the efficiency and stability of OSCs. The study shows that, by suppressing reverse tunnelling (the phenomenon whereby, when a solar cell is shaded, current flows in reverse, generating negative voltage and damaging the cell) in n-i-p inorganic perovskite-organic tandem solar cells, the organic solar cells successfully protect the perovskite layer. Even after exposure to an extreme reverse-bias of -40 V, the tandem devices retained more than 90% of their initial efficiency. Moreover, these tandem solar cells proved highly stable: after continuous operation at -20 V for 12 hours, they retained 90% of their initial efficiency; and after continuous operation at -4.5 V for 2,000 hours, they retained as much as 97% of their initial efficiency - far surpassing all existing thin-film solar technologies. The research has been published in the paper “Perovskite–organic tandem solar cells with superior reverse-bias stability,” in Nature Materials. The study provides a comprehensive understanding of reverse charge transport mechanism in bulk heterojunctions organic solar cells, overcoming reverse-bias instability in perovskite-based solar cells and providing critical guidelines for developing robust POTSCs. In earlier research, Prof. Li and his team demonstrated the n–i–p inorganic POTSCs achieving an impressive power conversion efficiency (PCE) of 25.9% (certified 25.1%) through bottom contact modulation, with improved stability under various conditions. That study, “Inorganic perovskite/organic tandem solar cells with 25.1% certified efficiency via bottom contact modulation”, was published in Nature Energy in 2025. In the latest study, the n-i-p POTSCs also demonstrated PCE exceeding 26% along with unparalleled reverse-bias stability, advancing their progress towards practical applications. Dr HUANG Jiaming, Postdoctoral Research Fellow and Mr HAN Yu, PhD student, both of the PolyU Department of Electrical and Electronic Engineering are the first authors of the Nature Materials and Nature Energy articles, respectively. Dr REN Zhiwei, Research Assistant Professor of the same department is the co-corresponding author of both publications. Prof. Li added, “The exceptional reverse-bias stability under shadowing conditions has been vividly demonstrated in scalable perovskite-organic tandem solar cell minimodules. This marks a significant leap forward, paving the way for a sustainable and efficient future powered by renewable energy systems.” ***END***

PolyU scholar Prof. Yi-Qing NI receives 16th Guanghua Engineering Science and Technology Award by the Chinese Academy of Engineering

Professor Yi-Qing NI, Yim, Mak, Kwok & Chung Professor in Smart Structures, Chair Professor of Smart Structures and Rail Transit of the Department of Civil and Environmental Engineering, Director of the PolyU-Hangzhou Technology and Innovation Research Institute, and Director of National Rail Transit Electrification and Automation Engineering Technology Research Centre (Hong Kong Branch) at The Hong Kong Polytechnic University (PolyU), has been honoured with the 16th Guanghua Engineering Science and Technology Award by the Chinese Academy of Engineering. The Guanghua Engineering Science and Technology Award is a national award presented biennially and is hailed as “the highest award in China’s engineering sector”. It aims to honour Chinese engineers and scientists who have made outstanding achievements and significant contributions in engineering science and technology, and engineering management. Since its establishment in 1996, the Award has recognised 423 distinguished individuals from different engineering fields. This year,40 awardees were selected from 471 candidates, including one Guanghua Engineering Science and Technology Achievement Award recipient and 39 Guanghua Engineering Science and Technology Award recipients, with Prof. Ni one of the three Award recipients from Hong Kong. Prof. Ni is world-renowned scholar in the fields of structural health monitoring and vibration control. He was ranked in the World’s Top 2% Most-Cited Scientists in rankings released by Stanford University for six consecutive years from 2020 to 2025 (in both the career-long and single year citation categories). He was also ranked among the world’s top 0.05% scholars on the 2025 ScholarGPS Highly Ranked Scholars – Lifetime list and placed fourth globally in the field of “Structural Health Monitoring”. Prof. Ni was nominated by PolyU President and Academician of the Chinese Academy of Sciences, Prof. Jin-Guang TENG. Prof. Teng congratulated him saying, “This award carries profound significance. It not only affirms Prof. Ni’s dedication and outstanding achievements over the years, but will also inspire PolyU staff and students to continue upholding the spirit of innovation in service of the long-term development of the nation and society.” Prof. Ni expressed his gratitude, “I am deeply grateful to the President for his trust and nomination, and I would also like to thank the research team that has worked alongside me over the years. We have always upheld a spirit of continuous innovation and change, starting from real-world needs to advancing smart rail transit and structural safety monitoring technologies, and applying our research outcomes to major infrastructure projects in Hong Kong and in the country more widely. Looking ahead, my team and I will continue to work hard to bring innovative PolyU technologies onto the international stage, deepen collaboration with the Chinese Mainland and overseas partners, enable more people to benefit and make greater contributions to national development and the long-term well-being of society.” Prof. Ni joined PolyU in 2001. His research expertise covers structural health monitoring, structural dynamics and control, smart materials and structures, and sensor technologies. As a core member of PolyU’s multi-disciplinary rail technology research team, he has contributed to the development of fibre Bragg grating sensors that have significantly enhanced the safety and stability of railway services. These devices can be installed on railway tracks and connected to fibre-optic cables, helping maintenance staff more effectively monitor wheel flats and rail conditions, carry out repairs in a timely manner, and safeguard passenger safety. In 2015, PolyU was approved by the Ministry of Science and Technology of the People’s Republic of China to establish the Hong Kong Branch of the National Rail Transit Electrification and Automation Engineering Technology Research Centre, with Prof. Ni serving as Director. The Centre brings together professors from five departments across two PolyU faculties to study high-speed rail from an integrated and macro perspective. Leveraging the internationalisation of China’s high-speed rail, the Centre exports its monitoring systems overseas, thereby promoting Hong Kong’s innovative technologies to the world. Prof. Ni has an outstanding record of research achievements and has received numerous accolades. The monitoring systems he has helped develop have won multiple awards at the Geneva International Exhibition of Inventions in Switzerland and at the China International Industrial Fair. In 2016, the project “Key technologies for building the Canton Tower”, in which he participated, received a second-class State Scientific and Technological Progress Award. Beyond his dedication to academic and scientific research, Prof. Ni is also committed to advancing knowledge transfer. As Director of the PolyU-Hangzhou Technology and Innovation Research Institute, he leads the Institute in focusing on areas such as intelligent transportation, Grand Canal culture and tourism, and medical aesthetics, actively aligning PolyU’s research strengths with local industrial development and societal needs to accelerate the real-world application of research outcomes for the benefit of society. ***END***

PolyU startup WiseLaw advances to National top 20 in AI competition “Win in AI+”

WiseLaw Digital Technology Limited (WiseLaw), a startup nurtured by the flagship PolyVentures startup ecosystem of The Hong Kong Polytechnic University (PolyU), stood out from the crowd in the second season of “Win in AI+”, a large-scale documentary-style startup investment programme jointly hosted by China Central Television and the Hangzhou Municipal People’s Government on 30 June. Outshining more than 1,000 other participating enterprises nationwide, including unicorns and teams led by Chinese and overseas academicians, WiseLaw successfully advanced to the National Top 20. As the only shortlisted Hong Kong enterprise in the Grand Final, it will compete for the title of one of the “Top 10 Chinese AI Startups of 2026” next month. This achievement fully validates the company’s innovation and commercialisation potential, while also showcasing PolyU’s outstanding capabilities in nurturing startups. Founded by Prof. LU Haitian, Hong Kong Sustaintech Foundation Professor in Accounting and Finance of the School of Accounting and Finance and Director of Mainland Development at PolyU, WiseLaw is Hong Kong’s first technology and innovation enterprise dedicated to developing cross-border legal and compliance AI agent applications. Bringing together distinguished PolyU alumni and technology experts from leading internet companies in the Chinese Mainland, WiseLaw is committed to deeply integrating AI technology with professional legal compliance expertise, providing intelligent legal compliance solutions for global enterprises, financial institutions and law firms. The company’s core product, “Lawrence”, is a customised AI digital employee for client application in cross-border legal and financial compliance scenarios. Leveraging globally leading large models, a multi-jurisdiction professional knowledge hub and proprietary engineering solutions, it delivers a range of services including legal research, compliance review, contract analysis and risk identification. It also flexibly addresses legal requirements across different jurisdictions, helps enterprises going global and efficiently manages legal risks. During the competition, Prof. Lu Haitian demonstrated the application of “Lawrence” in legal compliance scenarios and how it enhances the efficiency of cross-border legal services, garnering recognition from the judges. Prof. Christopher CHAO, Senior Vice President (Research and Innovation) of PolyU, remarked, “PolyU actively aligns with the ‘AI+’ development strategy outlined in the National 15th Five-Year Plan, leveraging advanced AI technology to drive frontier research, propelling industrial innovation. The University also focuses on nurturing startups, including WiseLaw to translate research outcomes into real-world solutions for societal impact. The project has earned funding support from the Research, Academic and Industry Sectors One-plus (RAISe+) Scheme administered by the Innovation and Technology Commission, demonstrating its research translation excellence and significant potential for industry impact. We look forward to WiseLaw, as the only Hong Kong enterprise shortlisted as one of the National Top 20 in this season’s competition of ‘Win in AI+’, scaling even greater heights in the Grand Final to showcase Hong Kong’s strengths in research and innovation.” Over the years, PolyU has achieved remarkable success in knowledge transfer and entrepreneurship development. Through the PolyVentures ecosystem, PolyU provides comprehensive support to its startups, having incubated and supported more than 600 enterprises to date. In recent years, PolyU has continuously deepened its strategic positioning in research and knowledge transfer. On one hand, it is moving towards market-oriented innovation research to ensure that research aligns closely with industry needs and societal challenges. On the other hand, it has established a robust network of Mainland Translational Research Institutes and set up incubation centres in both Hong Kong and the Chinese Mainland. In addition, through the development of overseas innovation and entrepreneurship hubs, PolyU actively supports its startups in cross-boundary and overseas expansion, promoting cross-regional collaboration and expanding PolyU’s international footprint and influence. ***END***

PolyU signs tripartite MoU with Dassault Systèmes and PAIEvo in Paris to advance cross-continental collaboration in research innovation

The Hong Kong Polytechnic University (PolyU) has signed a tripartite strategic Memorandum of Understanding (MoU) in Paris with globally renowned Dassault Systèmes and PAIEvo (HK) Limited (PAIEvo), a fully owned subsidiary of XtalPi Holdings Limited (XtalPi) listed in Hong Kong, to jointly promote collaboration in research innovation and talent development. This partnership marks an important milestone in PolyU’s development and underscores the University’s active role in fostering cross-continental collaboration to advance innovation and technology in Hong Kong, the Nation and the world. It also highlights the University’s international strategy to develop overseas innovation and entrepreneurship hubs, with Paris as its first foothold in Europe. The signing ceremony was held on 19 June at Dassault Systèmes’ Paris-area headquarters. Witnessed by Prof. Christopher CHAO, Senior Vice President (Research and Innovation) of PolyU; Mr Nicolas JEANNEE, Vice President 3DEXPERIENCE Edu of Dassault Systèmes; and Dr Kevin TSAI, Vice President of XtalPi and CEO of PAIEvo, the MoU was signed by Prof. Zijian ZHENG, Vice President (Knowledge Transfer) of PolyU; Ms Joanne LI, 3DEXPERIENCE Edu Sales Director of China, Dassault Systèmes; and Ms Ruyu WANG, Senior Director of External Affairs and Communications of XtalPi. Under the collaborative framework, the three parties will jointly pursue a range of initiatives, including advancing the digitalisation of smart laboratories, expanding research and development (R&D) in new materials, developing proprietary computing capabilities and molecular simulation tools, building an ecosystem for new substance discovery, and nurturing relevant professional talent.  Prof. Christopher Chao remarked, “PolyU has been strengthening its research and knowledge transfer strategy in recent years, from establishing a robust network of Mainland Translational Research Institutes (MTRIs), setting up the incubation centres, InnoHubs, across Hong Kong and the Chinese Mainland, to progressively expanding our global footprint by building overseas innovation hubs, with Paris serving as our first stop in Europe. Meanwhile, we proactively align our research with industry demands, with market-oriented innovation at its core. This is the foundation of our close partnership with Dassault Systèmes. By bringing together the distinctive strengths of the three parties, this partnership enables us to fully leverage cross-sector and cross-border synergies among academia, research and industry. It will not only advance our respective development but also bring tangible benefits to society.” Welcoming the delegations, Mr Nicolas Jeannée described the meeting as “highly meaningful”. He said, “This partnership connects not only Hong Kong and France, but also academia and industry. From the establishment of the Center of Excellence in 2025 to Dassault Systèmes’ official presence in Hong Kong in 2026, our collaboration with PolyU has continued to reach new heights. We look forward to working closely with our partners to generate more innovative outcomes and contribute to global digital transformation.” Dr Kevin Tsai stated, “This strategic collaboration, formed through our subsidiary PAIEvo with Dassault Systèmes and PolyU, marks another important step for XtalPi’s journey toward the ‘Lab of the Future’. By integrating the strengths of the three parties in intelligent decision-making and Physical AI, virtual twin modelling, and cross-disciplinary academic research, we aim to accelerate the development of a self-learning closed loop encompassing intelligent design, physical experimentation, digital simulation and innovative applications, thereby advancing the R&D paradigm toward autonomous discovery.” As a subsidiary of XtalPi, PAIEvo leverages XtalPi’s AI for Science platform, built on quantum physics, AI, and robotic experimentation, to systematically extend its proven R&D capabilities and technology strengths into key scenarios of new materials R&D. Dassault Systèmes, meanwhile, creates virtual worlds through its 3D design software, 3D Digital Mock-Up and Product Lifecycle Management solutions, reshaping the way products are designed, manufactured and supported. The University’s collaboration with Dassault Systèmes began in 2003. What started as a software licensing relationship has gradually developed into a comprehensive and multi-layered partnership embracing research and talent development. Last year, this partnership reached a new milestone with the establishment of the Dassault Systèmes–PolyU Center of Excellence, the first of its kind in the Asia-Pacific region. Combining PolyU expertise in AI, robotics and materials innovation with Dassault Systèmes leadership in virtual twin technologies, the Center has laid a solid foundation for the company’s expansion in Hong Kong and has become an important platform for driving innovation in ‘AI + materials’ and ‘AI + virtual twin’. The PolyU-Dassault Systèmes partnership also demonstrates the University’s proactive role in helping attract internationally renowned enterprises and talent to Hong Kong. Through the support of the HKSAR Government’s Office for Attracting Strategic Enterprises (OASES), and with PolyU’s recommendation and support, Dassault Systèmes was selected as one of OASES’ sixth batch of 22 strategic enterprises, officially establishing its presence in Hong Kong and expanding its local operations. PolyU will continue to support Dassault Systèmes development in Hong Kong by strengthening links between the ‘AI + manufacturing’ innovation ecosystems of Hong Kong and France, while also leveraging its strong network of translational research institutes and centres in the Chinese Mainland to facilitate the company’s further expansion there. During its visit to Dassault Systèmes, the PolyU delegation toured “The Playground”, an immersive experience space showcasing innovative technologies and live demonstrations powered by the company’s 3DEXPERIENCE platform. The delegation also visited the company’s 3DEXPERIENCE Lab to learn more about the innovative products and solutions developed by startups nurtured by Dassault Systèmes. The three parties additionally held in-depth exchanges and discussions on the practical implementation of their future collaboration. The delegation visited the Paris-area headquarters of Dassault Systèmes. ***END***