Chun Ki Yiu

ORCID: 0000-0003-3841-5327
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About
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Research Areas
  • Advanced Sensor and Energy Harvesting Materials
  • Tactile and Sensory Interactions
  • Conducting polymers and applications
  • Non-Invasive Vital Sign Monitoring
  • Olfactory and Sensory Function Studies
  • Advanced Chemical Sensor Technologies
  • Neuroscience and Neural Engineering
  • Muscle activation and electromyography studies
  • Supercapacitor Materials and Fabrication
  • Interactive and Immersive Displays
  • Nanomaterials and Printing Technologies
  • Gaze Tracking and Assistive Technology
  • Wireless Power Transfer Systems
  • ECG Monitoring and Analysis
  • EEG and Brain-Computer Interfaces
  • Gas Sensing Nanomaterials and Sensors
  • Optical Imaging and Spectroscopy Techniques
  • Innovative Energy Harvesting Technologies
  • Electrochemical sensors and biosensors
  • Advanced Memory and Neural Computing
  • Visual Attention and Saliency Detection
  • Cardiovascular and Diving-Related Complications
  • Hydrogels: synthesis, properties, applications
  • COVID-19 diagnosis using AI
  • Teleoperation and Haptic Systems

City University of Hong Kong
2020-2025

Hong Kong Science and Technology Parks Corporation
2021-2025

The coronavirus pandemic has highlighted the importance of developing intelligent robotics to prevent infectious disease spread. Human-machine interfaces (HMIs) give a chance interactions between users and robotics, which play significant role in teleoperating robotics. Conventional HMIs are based on bulky, rigid, expensive machines, mainly focus robots/machines control, but lack adequate feedbacks users, limit their applications conducting complicated tasks. Therefore, closed-loop with both...

10.1126/sciadv.abl6700 article EN cc-by-nc Science Advances 2022-01-14

Continuous monitoring of arterial blood pressure (BP) outside a clinical setting is crucial for preventing and diagnosing hypertension related diseases. However, current continuous BP instruments suffer from either bulky systems or poor user-device interfacial performance, hampering their applications in monitoring. Here, we report thin, soft, miniaturized system (TSMS) that combines conformal piezoelectric sensor array, an active adaptation unit, signal processing module, advanced machine...

10.1038/s41467-023-40763-3 article EN cc-by Nature Communications 2023-08-17

Tactile sensations are mainly transmitted to each other by physical touch. Wireless touch perception could be a revolution for us interact with the world. Here, we report wireless self-sensing and haptic-reproducing electronic skin (e-skin) realize noncontact communications. A flexible actuator was developed provide an integrated function in both tactile sensing haptic feedback. When this e-skin dynamically pressed, generated induced voltage as information. Via communication, another receive...

10.1126/sciadv.ade2450 article EN cc-by-nc Science Advances 2022-12-23

Abstract Recent advances in virtual reality (VR) technologies accelerate the creation of a flawless 3D world to provide frontier social platform for human. Equally important traditional visual, auditory and tactile sensations, olfaction exerts both physiological psychological influences on humans. Here, we report concept skin-interfaced olfactory feedback systems with wirelessly, programmable capabilities based arrays flexible miniaturized odor generators (OGs) VR applications. By optimizing...

10.1038/s41467-023-37678-4 article EN cc-by Nature Communications 2023-05-09

Abstract The advancement of laser-induced graphene (LIG) technology has streamlined the fabrications flexible devices. However, ultrafast kinetics triggered by laser irradiation generates intrinsic amorphous characteristics, leading to high resistivity and compromised performance in electronic Healing defects specific patterns is technologically challenging conventional methods. Herein, we report rapid rectification LIG’s topological flash Joule heating milliseconds (referred as F-LIG),...

10.1038/s41467-024-47341-1 article EN cc-by Nature Communications 2024-04-04

A combined treatment using medication and electrostimulation increases its effectiveness in comparison with one alone. However, the organic integration of two strategies miniaturized system for practical usage has seldom been reported. This article reports an implantable electronic medicine based on bioresorbable microneedle devices that is activated wirelessly sustainable delivery anti-inflammatory drugs. The composed a radio frequency wireless power transmission drug-loaded structure, all...

10.1021/acs.nanolett.2c01997 article EN Nano Letters 2022-07-11

Wearable electronics have attracted extensive attentions over the past few years for their potential applications in health monitoring based on continuous data collection and real-time wireless transmission, which highlights importance of portable powering technologies. Batteries are most used power source wearable electronics, but unfortunately, they consist hazardous materials bulky, limit incorporation into state-of-art skin-integrated electronics. Sweat-activated biocompatible batteries...

10.1002/advs.202104635 article EN cc-by Advanced Science 2022-01-28

Abstract Thin, soft, and skin-integrated electronic system has great advantages for realizing continuous human healthcare monitoring. Here, we report an ultra-thin, flexible, garment-based microelectronics powered by sweat-activated batteries (SABs) applications of powering biosensors microelectronic systems real time sweat The SAB cell is ultra-thin (1.25 mm) with excellent biocompatibility. good electricity output high capacity (14.33 mAh) maximum power density (3.17 mW cm −2 ) after being...

10.1038/s41528-022-00144-0 article EN cc-by npj Flexible Electronics 2022-02-08

Abstract Intelligent monitoring human physiological information in real time raises the demand for skin‐integrated electronics, as which is a flexible format and can be mounted onto curved skin noninvasive healthcare monitoring. The biofluid such sweat from contains abundant biomarkers reflecting body health conditions. Here, monitor with six biosensors embedded detection of NH 4 + , Na glucose, pH, impedance, surface temperature described, could decode fresh generated during exercising....

10.1002/adhm.202202846 article EN Advanced Healthcare Materials 2023-02-11

The rapid diagnosis of respiratory virus infection through breath and blow remains challenging. Here we develop a wireless, battery-free, multifunctional pathogenic system (PIDS) for diagnosing SARS-CoV-2 symptom severity by within 110 s 350 s, respectively. accuracies reach to 100% 92% evaluating the 42 participants, PIDS realizes simultaneous gaseous sample collection, biomarker identification, abnormal physical signs recording machine learning analysis. We transform into other...

10.1038/s41467-023-43189-z article EN cc-by Nature Communications 2023-11-20

Olfaction feedback systems could be utilized to stimulate human emotion, increase alertness, provide clinical therapy, and establish immersive virtual environments. Currently, the reported olfaction technologies still face a host of formidable challenges, including perceivable delay in odor manipulation, unwieldy dimensions, limited number supplies. Herein, we report general strategy solve these problems, which associates with wearable, high-performance olfactory interface based on...

10.1038/s41467-024-48884-z article EN cc-by Nature Communications 2024-05-25

The capacity to discern and locate positions in three-dimensional space is crucial for human-machine interfaces robotic perception. However, current soft electronics can only obtain two-dimensional spatial locations through physical contact. In this study, we report a non-contact position targeting concept enabled by transparent thin electronic skin (E-skin) with sensing capabilities. Inspired the active electrosensation of mormyroidea fish, E-skin actively ascertains 3D targeted objects...

10.1038/s41467-024-54249-3 article EN cc-by-nc-nd Nature Communications 2024-11-14

Electronic skin made of thin, soft, stretchable devices that can mimic the human and reconstruct tactile sensation perception offers great opportunities for prosthesis sensing, robotics controlling, human-machine interfaces. Advanced materials mechanics engineering thin film has proven to be an efficient route enable enhance flexibility stretchability various electronic skins; however, density is still low owing limitation in existing fabrication techniques. Here, we report a high-throughput...

10.34133/2020/1085417 article EN cc-by Research 2020-01-01

Transient power sources with excellent biocompatibility and bioresorablility have attracted significant attention. Here, we report high-performance, transient glucose enzymatic biofuel cells (TEBFCs) based on the laser-induced graphene (LIG)/gold nanoparticles (Au NPs) composite electrodes. Such LIG electrodes can be easily fabricated from polyimide (PI) an infrared CO2 laser exhibit a low impedance (16 Ω). The resulted TEBFC yields high open circuit potential (OCP) of 0.77 V maximum density...

10.1021/acs.nanolett.2c00864 article EN Nano Letters 2022-04-12

Wearable haptics serve as an enhanced media to connect humans and VR/robots. The inevitable sweating issue in all wearables creates a bottleneck for wearable haptics, the sweat/moisture accumulated skin/device interface can substantially affect feedback accuracy, comfortability, create hygienic problems. Nowadays, typically gain performance at cost of sacrificing breathability, comfort, biocompatibility. Here, we developed fully integrated breathable haptic textile (FIBHT) solve these...

10.1126/sciadv.adq9575 article EN cc-by-nc Science Advances 2024-10-18

Abstract With the high flexibility, good conformability and lightweight, next‐generation energy harvesters could exist in format of epidermal electronics. They are able to convert mechanical from daily body motions into electrical signals for harvesting human‐machine interfaces. Triboelectric nanogenerators (TENGs) have proven be excellent candidates wearable harvesters, however, reported TENGs commonly face hurdles poor adhesion skin relative thick geometry up several cm. Herein, a series...

10.1002/adfm.202111269 article EN Advanced Functional Materials 2021-12-26
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