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Towards the future of long-duration energy storage: Prof. ZHAO Tianshou of SUSTech on novel flow cells

Prof. ZHAO Tianshou, Director of Energy Institute for Carbon Neutrality, Chair Professor of Mechanical and Energy Engineering, Southern University of Science and Technology (SUSTech), China, delivered the 41st PAIR Distinguished Lecture titled “Flow Cells for Long-Duration Energy Storage” on 4 July 2025 on the PolyU campus. The lecture drew over 90 attendees in person and captivated an online audience of more than 15,400 from different countries and regions who watched the live broadcast on social media platforms. The lecture commenced with a warm welcome and an introduction of the speaker by Prof. WANG Shengwei, Director of Otto Poon Charitable Foundation Research Institute for Smart Energy (RISE). Prof. Zhao opened his lecture by stressing the critical role of energy storage in achieving carbon neutrality goals, particularly China’s pledge to be carbon neutral by 2060. He emphasised that future power systems will require energy storage solutions integrated across power generation, transmission and consumption, and the energy storage industry scale is projected to reach a trillion pounds. Prof. Zhao mentioned that grid-scale energy storage must meet three core requirements: safety and reliability, cost-effectiveness, and not being limited by site and resource constraints. He pointed out that changes in environmental conditions can cause fluctuations in renewables’ power generation, and this intermittency problem can last dozens of hours. As such, long-duration energy storage is the key to preventing energy curtailment and enhancing grid flexibility. Prof. Zhao advocated the use of “flowable energy carriers” (e.g., hydrogen, methanol, ammonia) and “flow cells” (e.g., electrolysers, fuel cells, flow batteries) to achieve efficient, long-duration and site-flexible energy storage solutions. He introduced the advantages, applications and challenges of two types of flow cells: “hydrogen storage technology” and “redox flow batteries”. Although hydrogen storage technology offers advantages in terms of high energy density, long duration, and no site constraints, its requirements for platinum electrode materials, as well as low-temperature, high-pressure storage and transportation conditions, have made the technology costly. Redox Flow Batteries are particularly suitable for large-scale energy storage due to their safety, durability, flexible storage duration, and detachable device design, but their high costs remain an issue. Prof. Zhao highlighted that the present core scientific challenge is to develop theories and methods for predicting and designing matched microscopic and macroscopic structures by understanding the interplay between surface reactions and transport within multiscale structures, thereby achieving synergy between reactions and transfer to maximise battery performance. His team employs an interdisciplinary approach, combining electrochemistry and thermofluid science to develop thermo-electrochemical theory, which has led to innovations in membranes and electrodes, as well as the successful development of a flow battery with a charge/discharge cycle life of over 15,000 cycles, the longest cycle life for flow batteries. Finally, Prof. Zhao introduced the concept of “e-fuel”, a clean, renewable, electrically rechargeable liquid fuel. E-fuel energy storage technology has no site and time limitations, and exhibits high efficiency and power density, scalability, safety and potential for economic viability. It represents an excellent alternative to conventional fuel cells. In closing, Prof. Zhao stated that his research aims to establish the scientific foundations for breakthroughs in energy storage technologies, enabling the widespread adoption of clean energy through optimised performance, cost and lifetime. Following the presentation was a lively question-and-answer session. The audience engaged in a productive discussion with Prof. Zhao. Please click here for an online review.

PAIR Video is now online

The Hong Kong Polytechnic University (PolyU) leverages its world-class academic and research excellence to develop innovative solutions for a more sustainable tomorrow. In July 2022, the PolyU Academy for Interdisciplinary Research (PAIR) was established as the University’s central research platform dedicated to providing world-leading interdisciplinary solutions to significant societal challenges. Watch the video now to discover PAIR research units’ unwavering efforts in research and scholarship, knowledge transfer and collaboration, to develop impactful solutions that benefit Hong Kong, the Nation, and the world!

Prof. TAM Hwa-yaw featured in HOY TV’s programme on ultrafine high-sensitivity optical fibre sensor

Prof. TAM Hwa-yaw, Associate Director of Photonics Research Institute and Chair Professor of Photonics of The Hong Kong Polytechnic University, was featured in HOY TV’s programme “Health Concern Group” to introduce the optical fibre sensor developed by his team. The ultrafine, biocompatible plastic optical fibre sensor can improve surgical navigation, monitor contact forces and reduce trauma during cochlear implantation, thereby significantly enhancing the procedure’s safety and precision. This innovative sensing technology is expected to bring breakthrough improvements to precision procedures like cochlear implantation. Prof. Tam’s team is collaborating with the renowned implantable hearing solutions company Cochlear Limited, The University of Melbourne, and The Royal Victorian Eye and Ear Hospital, where clinical trials will commence next year, to promote the practical application of the technology, offering a “win-win” solution for health professionals and patients. Online coverage: HOY TV - https://polyu.me/4kobWYH (Ep. 373) (08:31 - 11:23) (Chinese only)

Prof. Sonata YAU writes in Ming Pao on link between sarcopenia and depression

Prof. Sonata YAU, Member of Mental Health Research Centre (MHRC) and Associate Professor of Department of Rehabilitation Sciences at The Hong Kong Polytechnic University, recently penned an article for Ming Pao on the link between sarcopenia (commonly known as “muscle loss”) and depression, explaining the close bidirectional relationship between the two conditions. In the article, she mentioned that approximately 10% of Hong Kong’s elderly population suffers from depression, and several large-scale studies have shown that persons with sarcopenia have a higher risk of depression than the general population. An eight-year longitudinal study in China revealed that sarcopenia and depression interact with each other: individuals with sarcopenia have about 70% higher risk of depression, while individuals with depression have 50% increased risk of developing sarcopenia, thus forming a vicious cycle. Prof. Yau emphasised that consistent exercise, balanced diet and structured lifestyle can help improve the situation. She recommended the public to regularly engage in the following two types of physical exercise to prevent and reverse the problem of co-occurring sarcopenia and depression: Resistance training (e.g., dumbbell lifting, resistance band workout, squats): it promotes protein synthesis in muscle cells, helping improve muscle strength and mass; and promotes brain neuroplasticity, helping reduce depressive symptoms with noticeable antidepressant effects in the short term. Aerobic exercise (e.g., brisk walking, cycling, swimming): it maintains mitochondrial function in muscles and reduces muscle protein breakdown, helping to fight sarcopenia; and enhances cerebral blood flow as well as the secretion of serotonin and neurotrophic factors in the brain, supporting mood regulation. Online coverage: Ming Pao Daily News - https://polyu.me/3HTksBg

PolyU showcases innovative research in AI and medicine-engineering integration at BIO International Convention 2025

PolyU participated in the BIO International Convention 2025 (BIO 2025) held in Boston from 16 to 19 June 2025. Showcasing its ground-breaking innovations and translational research across the fields of artificial intelligence (AI), medicine and engineering for global industry leaders, the University highlighted its interdisciplinary excellence and leading position in medical and health research. The world’s largest biotechnology convention, BIO 2025 brought together over 20,000 industry leaders and professionals from about 70 countries and regions. It embraced all key aspects of the biotechnology ecosystem, spanning from research and development, clinical trials and manufacturing, to investment, business development and commercialisation. Ten cutting-edge PolyU innovations in drug discovery, medical devices and diagnostics, biomedical engineering, rehabilitation technologies, optometry and food science were showcased at the Convention. Apart from presentations, the research teams also engaged in business forums and thematic discussions during the event to cultivate meaningful connections, forge strategic partnerships and explore new avenues for collaboration with global industry leaders. PAIR scholars-led innovations exhibited at BIO 2025 include: “PocNova™: Ultra-Fast Nucleic Acid Testing System”, led by Prof. Thomas LEE Ming-hung, Member of Research Institute for Sports Science and Technology (RISports) and Associate Professor of Department of Biomedical Engineering “Hybrid Robotic IoT for Telerehabilitation after Stroke”, led by Prof. HU Xiaoling, Member of Research Institute for Smart Ageing (RISA) and RISports, and Associate Professor of the Department of Biomedical Engineering “HAND-HEART: An AI-Based Hand Hygiene Augmented Reality Tool”, led by Prof. YANG Lin, Management Committee Member of Research Centre of Textiles for Future Fashion (RCTFF), Member of Research Centre for SHARP Vision (RCSV) and Associate Professor of the School of Nursing “First-in-Class Antibiotic Therapeutics”, led by Prof. MA Cong, Member of Research Centre for Chinese Medicine Innovation (RCMI) and Associate Professor of Department of Applied Biology and Chemical Technology “Novel Nutraceuticals for Neurodegenerative Diseases”, led by Prof. Simon LEE Ming-yuen, Management Committee Member of RCMI, Member of Research Institute for Future Food (RiFood) and RISA, and Chair Professor of Biomedical Sciences of the Department of Food Science and Nutrition “AkkMore™: a Fungus- and Plant-based Supplement against Obesity and Prediabetes”, led by Dr Gail CHANG Jinhui, Member of RiFood and Research Assistant Professor of Department of Food Science and Nutrition A special highlight of PolyU’s participation this year in the business presentation session was Prof. Ma Cong sharing his latest breakthrough in antibiotic therapeutics. Prof. Ma has led a research team to make a first-in-class antimicrobial drug discovery with a unique mechanism of action to tackle antimicrobial resistance. His innovative approach focuses on disrupting protein–protein interactions (PPIs) within the bacterial transcription complex — igniting hope for the development of new antimicrobial agents. Building on its robust foundation in medical and health research, PolyU is dedicated to advancing interdisciplinary research at the convergence of medicine, AI, engineering, and data science, pioneering a new era of healthcare innovation, while also contributing to Hong Kong’s development into an international health and medical innovation hub. Press release: https://polyu.me/4nb0HFA Online coverage: Mirage News - https://polyu.me/4kYPUg7

Prof. LI Heng ranked nation’s top scientist in Engineering and Technology by Research.com

Prof. LI Heng, Associate Director of Research Institute for Artificial Intelligence of Things (RIAIoT) and Chair Professor of Construction Informatics, has been ranked first in China and 21st globally in Engineering and Technology, in the 2025 Best Scientists Rankings by Research.com. The ranking is determined by a scientist’s D-index (Discipline H-index), which evaluates a scientist’s scholarly impact through discipline-specific publications and citation metrics. This international recognition underscores Prof. Li’s exceptional contributions to the fields of engineering and technology, as well as the profound societal impact of his research.  Prof. Li has conducted many funded research projects related to the innovative application and transfer of construction information technologies. His research interests include digital construction, smart construction, ergonomics and robotics. With an extensive research career spanning more than two decades, Prof. Li has steered the development of a diverse range of products, encompassing computer-aided drawing systems, construction planning and management systems, and sophisticated intelligent safety systems. In recent years, his research efforts have been intently directed towards the realms of cloud computing, artificial intelligence, and applications in the Internet of Things (IoT). Online coverage: Wen Wei Po - https://polyu.me/4mVG3ct (Chinese only)

Prof. ZHENG Zijian featured in Sing Tao Daily on flexible electronics research for industrial advancement

Prof. ZHENG Zijian, Associate Director of Research Institute for Intelligent Wearable Systems (RI-IWEAR) and Chair Professor of Soft Materials and Devices in the Department of Applied Biology and Chemical Technology, in an exclusive interview with Sing Tao Daily, expounded on the contributions of his pioneering research in the field of flexible electronics and the transformative impact it brings on industries. The feature underscores PolyU’s commitment to bridging academic excellence with industry needs, positioning Hong Kong as a hub for developing next-generation wearable technologies and smart materials. Prof. Zheng and his interdisciplinary research team have made significant breakthroughs in the field of flexible electronics, having successfully developed innovations that offer high permeability, stretchability, conductivity and electrical stability. These cutting-edge technologies hold promises for applications in diverse fields including new materials, renewable energy, health monitoring, professional sports performance tracking and biomedicine. Leveraging PolyU’s Technology and Innovation Research Institutes in Huizhou and Wenzhou, Prof. Zheng’s team is actively collaborating with industry partners in Mainland China to transform research outcomes into real-world applications. Such partnerships will further unlock possibilities for innovation in various sectors, fostering technological progress and industrial upgrading. Online coverage:  Sing Tao Daily - https://polyu.me/3ZqqgZ1 (Chinese only)

Exploring New Frontiers in Nanotechnology: Prof. David PUI Unpacks Applications in Microelectronics and Environmental Health

Prof. David Y. H. PUI from the University of Minnesota, U.S.A., delivered the PAIR Seminar titled “Nanoparticle Technologies in Microelectronics, Air Quality, Health Effects, and Filtration” on 13 June 2025 on the PolyU campus. The seminar drew over 60 attendees in person and engaged an online audience of more than 13,100 from various countries and regions who joined the live broadcast on social media platforms. The seminar commenced with a warm welcome and introduction of the speaker by Prof. CHEN Qingyan, Director of PAIR. Prof. Pui began his presentation by outlining the recent advancements in nanoparticle technologies, covering instrumentation developments, ISO standards and industry partnerships. He then delved into the applications of nanoparticle technologies in four interdisciplinary areas: Microelectronics: Contamination control in Extreme UV Lithography (EUVL) systems; Air Quality: PM2.5 mitigation, respirators, and indoor and urban pollution controls; Health Effects: Nanomedicine, bioaerosol sensors, UV-C decontamination; and Filtration: Prediction of filter media performance and wildfire impacts on electret filter efficiency, and large-scale direct-capture of atmospheric CO2 to combat climate change. In his closing remarks, Prof. Pui highlighted that nanoparticles are involved in multiple disciplines, bringing both benefits and potential harm to the environment, human health and semiconductor manufacturing. He underscored the importance of collaborative fundamental and applied research between academia and industry to foster a sustainable future, urging stronger partnerships among governments, industries and researchers to create a healthier and more prosperous society in the long run. Following the presentation was a lively question-and-answer session moderated by Ir Prof. GUO Hai, Management Committee Member of the Research Institute for Land and Space (RILS), Member of the Research Institute for Sustainable Urban Development (RISUD) and Professor in the Department of Civil and Environmental Engineering. The audience engaged in a productive dialogue with Prof. Pui. Please click here for an online review.

Exploring the frontiers of mechanics: Prof. GAO Huajian of Tsinghua University on mechano-X innovations

Prof. GAO Huajian, Xinghua Distinguished University Professor and Director of the Mechano-X Institute of Tsinghua University, China, delivered the 40th PAIR Distinguished Lecture titled “Mechano-X: Interdisciplinary Research and Innovation at the Frontiers of Mechanics” on 13 June 2025 on the PolyU campus. The lecture drew over 130 attendees in person and captivated an online audience of more than 14,000 from different countries and regions who watched the live broadcast on social media platforms. The lecture commenced with a warm welcome by Prof. CHEN Qingyan, Director of PAIR, followed by an introduction of the speaker by Prof. WANG Zuankai, Associate Vice President (Research and Innovation) of PolyU. Prof. Gao began his presentation with a brief outline of important role that mechanics plays in the development of structural and functional materials, enlightening the audience on the recent advances in nanostructured materials, biomedical materials, mechanical metamaterials, soft actuators, flexible electronics, tunable mechanochromics, regenerative mechanomedicine and many more.  He further illustrated how fundamental principles of mechanics enable the proactive modulation and programming of properties in both engineering and biological systems. Through case studies, Prof. Gao highlighted the breakthroughs in mechano-energy, mechano-interfaces, and mechano-materials, demonstrating their transformative potential. In closing, Prof. Gao emphasised that mechanics remains a discipline with boundless possibilities in the era of interdisciplinary research and innovation. He underscored the promise of mechanics-based modelling and design, which could expand into areas such as nanostructured, low-dimensional, biological, biomimetic, soft, gradient, and metamaterials. Such approaches, he noted, could deeply intersect with fields including advanced manufacturing, healthcare technology, sustainable energy, and biomedical tissue and organ engineering, opening new opportunities for the development of related solutions. Following the presentation was a lively question-and-answer session moderated by Prof. CHENG Li, Management Committee Member of Research Institute for Artificial Intelligence of Things (RIAIoT), Associate Dean (Research) of Faculty of Engineering and Chair Professor of Mechanical Engineering. The audience engaged in a productive discussion with Prof. Gao. Please click here for an online review.

MHRC members named among 2025 World’s Best Scientists by Research.com

Twelve members of the Mental Health Research Center (MHRC) have been named by leading academic research portal Research.com among the world’s best scientists in their respective disciplines, including Computer Science, Medicine, Neuroscience, Psychology, and Social Sciences and Humanities. The ranking is compiled based on a scientist’s D-index (Discipline H-index), which includes exclusively papers and citation metrics for an examined discipline. This international recognition highlights MHRC members’ exceptional contributions to their fields and the significant impact their research has had on the society. *Based on the 4th edition of Research.com ranking *In alphabetical order of disciplines and surnames of scholars World Ranking National Ranking MHRC Member D-Index Citations Publications Discipline   1504 185 (China) Prof. QIN Jing 72 19,492 316 Computer Science 716 79 (United Kingdom) Prof. Keith HAWTON 158 85,107 724 Medicine 7181 121 (China) Prof. Georg KRANZ 38 4,729 173 Neuroscience 3954 52 (China) Prof. QIU Anqi 54 10,038 206 Neuroscience 2758 35 (China) Prof. Benjamin YEE 63 15,473 186 Neuroscience 10011 99 (China) Dr Alma AU 30 2,879 106 Psychology 9782 5062 (United States) Prof. CAI Huajian 30 6,185 107 Psychology 8737 82 (China) Prof. Sylvia CHEN 34 5,092 83 Psychology 137 82 (United States) Prof. Patrick CORRIGAN 130 78,129 589 Psychology 2740 23 (China) Prof. David SHUM 62 15,108 366 Psychology 3840 35 (China) Prof. Winnie MAK 54 11,382 213 Psychology 49 1 (China) Prof. Paul YIP 104 180,365 557 Social Sciences and Humanities