Title:Flexible Monitoring Interfaces:Motion Monitoring and Analysis
Speaker:Professor Li Fengyu(Professor at Jinan University)
Time:June 9,2025(Monday)2:30 PM–5:00 PM
Venue:Room 214,Building 16,School of Chemistry and Chemical Engineering
Inviter:Professor Liu Jinbin
Organizing Unit:School of Chemistry and Chemical Engineering
Speaker Profile:
Professor Li Fengyu is a professor and doctoral supervisor at Jinan University and a senior member of the Chinese Chemical Society.His research focuses on flexible photonic crystals,flexible electronics,and wearable devices.He has published over 100 SCI papers in journals such asAdv.Mater.,Angewandte Chemie,andAnal.Chem..He has developed wearable motion monitoring devices that have assisted national sprint training and contributed to the breakthrough performance of Su Bingtian at the 2021 Tokyo Olympics.He has also conducted application research on injury prevention in military training.He submitted China's first international standard for printed electronics;participated in drafting the"Technical Development Roadmap for China's Printing Industry"on behalf of the China Printing and Equipment&Materials Industry Association;and received the second prize of the Chinese Academy of Sciences Award for Science and Technology Promotion and the first prize of the Beijing Science and Technology Award.
Abstract:
The 100-meter sprint is hailed as the"gem on the crown"of competitive sports and represents a core competitive strength in a country's sports development.Developed countries use high-tech instruments and equipment to monitor every aspect of athletes'physical fitness,technique,and recovery,providing comprehensive diagnosis and analysis of their physical and technical conditions and formulating personalized training programs.Starting from the actual needs and challenges of"motion monitoring and analysis,"and targeting the characteristics of"dynamic environment"and"multi-targets"in motion monitoring and analysis,we have designed"flexible photonic crystals"and"flexible electrode interfaces"and constructed a Hofmeister effect model for regulating flexible interfaces.By integrating artificial intelligence algorithms,we have developed"explainable deep learning"to assist in the analysis of sensing mechanisms and device performance evaluation in dynamic processes,achieving real-time multi-site monitoring of electromyographic(EMG)signals during motion and comprehensive monitoring and analysis of the body's physiological environment and metabolic status during physical activity.
To address the dynamic testing environment in motion monitoring,we have established a scientific model of the Hofmeister effect for regulating flexible interfaces:
1. For the first time,we reported the quantitative structure-activity relationship of the fluorescence enhancement phenomenon of flexible photonic crystals during elastic deformation.Using the selective fluorescence amplification of photonic crystal chips,we constructed a series of photonic crystal microarray chips to achieve highly sensitive detection and analysis of multiple targets in complex systems using simple dyes.
2. We completed the integration of wearable devices with flexible electrode interfaces,explored the combination of micro/nano flexible electrode structures and conductive hydrogel elastic interfaces,and designed wearable sensors for multi-target and multi-site monitoring and analysis of human sweat metabolism and EMG.
For multi-target analysis in motion analysis:
3. For the first time,we proposed a deep learning-assisted method for studying sensor performance and mechanisms,enabling algorithm feedback-driven sensor design.This approach allows for the monitoring and analysis of metabolites such as ions,glucose,lactate,proteins,and antibiotics in human sweat,advancing the application analysis of sports metabolism mechanisms.
4. The"wearable multi-parameter motion monitoring device"we developed has been validated by professional sports teams from the General Administration of Sport of China and the Guangdong Provincial Sports Bureau for competitive sports training.It has also been tested for injury prevention in military training by a special operations unit.The product has entered the Huawei HarmonyOS ecosystem and the OPPO supply chain,promoting product development and market commercialization.
