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PRODID:-//Department of Electrical and Computer Engineering (HKUECE) 電機與計算機工程系 - ECPv6.15.20//NONSGML v1.0//EN
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X-WR-CALNAME:Department of Electrical and Computer Engineering (HKUECE) 電機與計算機工程系
X-ORIGINAL-URL:https://ece.hku.hk
X-WR-CALDESC:Events for Department of Electrical and Computer Engineering (HKUECE) 電機與計算機工程系
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BEGIN:VTIMEZONE
TZID:Asia/Hong_Kong
BEGIN:STANDARD
TZOFFSETFROM:+0800
TZOFFSETTO:+0800
TZNAME:HKT
DTSTART:20230101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Hong_Kong:20240912T170000
DTEND;TZID=Asia/Hong_Kong:20240912T180000
DTSTAMP:20260512T135022
CREATED:20240906T071948Z
LAST-MODIFIED:20250114T041725Z
UID:19099-1726160400-1726164000@ece.hku.hk
SUMMARY:RPG Seminar – Stretchable Organic Electrochemical Transistors for Wearable Applications
DESCRIPTION:Abstract\nOrganic electrochemical transistors (OECT) have emerged as a promising technology paradigm for wearable healthcare applications. However\, several major challenges limit their widespread adoption in real-world applications: 1) the lack of conformable and stretchable OECT units to reduce the mechanical mismatch between devices and the soft human body; 2) the lack of reliable fabrication methods to enable scalable manufacturing of intrinsically stretchable OECT arrays with smaller feature sizes and high density; and 3) the lack of miniaturized readout systems to enable wearable-sized assembly for practical on-body applications. Herein we present a wearable\, integrated\, and soft electronic (WISE) platform based on intrinsically stretchable OECT arrays\, addressing all these challenges. The WISE-platform achieves: 1) intrinsically stretchability (>50%) by establishing a standardizable material protocol for device assembly; 2) a scalable fabrication of stretchable OECTs arrays with feature size down to 100 μm using a high-resolution 6 channel inkjet printing system; and 3) a customized\, coin-sized data readout system for easy acquisition of biosignals at their origin. As an example\, we demonstrate the use of the coin-sized\, smartwatch-compatible electronic module for wearable in-sensor computing at the edge\, but other application scenarios can be easily imagined. \nSpeaker\nMr. Liu Dingyao\nDepartment of Electrical and Electronic Engineering\,\nThe University of Hong Kong \nBiography of the speaker\nDingyao Liu received his B.Sc. in Applied Chemistry from Xi’an Jiaotong University and M.Eng. in Polymer Science and Engineering from Sichuan University. He is interested in the design\, fabrication\, and characterization of soft materials. He is currently a Ph.D. candidate in the WISE Research Group aiming to developing high-performance and miniaturized soft OECTs for wearable bioelectronic applications. \nOrganiser\nProf. Shiming Zhang \nAll are welcome.
URL:https://ece.hku.hk/events/20240912-1/
LOCATION:Room CB-603\, 6/F\, Chow Yei Ching Building\, The University of Hong Kong
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://ece.hku.hk/wp-content/uploads/2024/11/rpg-seminar.jpg
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BEGIN:VEVENT
DTSTART;TZID=Asia/Hong_Kong:20240912T180000
DTEND;TZID=Asia/Hong_Kong:20240912T190000
DTSTAMP:20260512T135022
CREATED:20240906T071453Z
LAST-MODIFIED:20250114T041645Z
UID:19097-1726164000-1726167600@ece.hku.hk
SUMMARY:RPG Seminar – Coin-sized\, Fully Integrated\, and Minimally Invasive Continuous Glucose Monitoring System Based on Organic Electrochemical Transistors
DESCRIPTION:Abstract\nContinuous glucose monitoring systems (CGMs) are critical toward closed-loop diabetes management. The field’s progress urges next-generation CGMs with enhanced antinoise ability\, reliability\, and wearability. Here\, we propose a coin-sized\, fully integrated\, and wearable CGM\, achieved by holistically synergizing state-of-the-art interdisciplinary technologies of biosensors\, minimally invasive tools\, and hydrogels. The proposed CGM consists of three major parts: (i) an emerging biochemical signal amplifier\, the organic electrochemical transistor (OECT)\, improving the signal-to-noise ratio (SNR) beyond traditional electrochemical sensors; (ii) a microneedle array to facilitate subcutaneous glucose sampling with minimized pain; and (iii) a soft hydrogel to stabilize the skin-device interface. Compared to conventional CGMs\, the OECT-CGM offers a high antinoise ability\, tunable sensitivity and resolution\, and comfort wearability\, enabling personalized glucose sensing for future precision diabetes health care. Last\, we discuss how OECT technology can help push the limit of detection of current wearable electrochemical biosensors\, especially when operating in complicated conditions. \nSpeaker\nMr. Bai Jing\nDepartment of Electrical and Electronic Engineering\,\nThe University of Hong Kong \nBiography of the speaker\nMr. Jing Bai received his B.Eng. in Software Engineering and B.Mgmt. in Business Administration at Xi’ an Jiaotong University. He was working on industrial projects related to inkjet printing control systems\, microcontrollers\, and human-machine interfaces. Jing is currently a PhD candidate in HKU-WISE Lab. He aims to establish a reliable and standardized manufacturing method for soft OECTs with fully printing technologies\, and using high-density soft OECT arrays for emerging biosensing and computing applications. \nOrganiser\nProf. Shiming Zhang \nAll are welcome.
URL:https://ece.hku.hk/events/20240912-2/
LOCATION:Room CB-603\, 6/F\, Chow Yei Ching Building\, The University of Hong Kong
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://ece.hku.hk/wp-content/uploads/2024/11/rpg-seminar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Hong_Kong:20240912T190000
DTEND;TZID=Asia/Hong_Kong:20240912T200000
DTSTAMP:20260512T135022
CREATED:20240906T071640Z
LAST-MODIFIED:20250114T041612Z
UID:19098-1726167600-1726171200@ece.hku.hk
SUMMARY:RPG Seminar – Detect The Undetectable in Wearables and Human-Machine Interfaces: pM-Level Biomolecular Detection with ETRS
DESCRIPTION:Abstract\nOrganic electrochemical transistors (OECTs) are emerging as next-generation biosensing technologies due to their capacity to amplify biosignals at low power\, making them particularly suitable for developing sensitive wearable sensors capable of detecting low-concentration biosignals. Current technologies predominantly focus on maximizing the transconductance (amplification capability) of OECTs\, which proves effective for direct electrophysiological detection. However\, in the case of complex biochemical sensing\, involving a multi-stage reaction\, the detection limit depends not only on the amplification capacity but also on the reactions at the gate electrode. In this study\, we introduce the concept of OECTs resonant spectroscopy\, where we have found that a resonant frequency exists\, which can lower the limit of detection (LoD) of the sensor by 1-2 orders. The resonant frequency reflects the peaking synergy at which the dynamic binding-debinding process of targeted molecules and the transconductance of OECTs achieve optimal coupling. The proposed resonance-mode OECTs could serve as a new paradigm applicable to a wide range of biosensing applications that demand higher sensitivity. \nSpeaker\nMr. Tian Xinyu\nDepartment of Electrical and Electronic Engineering\,\nThe University of Hong Kong \nBiography of the speaker\nMr. Xinyu Tian received his B.Eng in Control & Measurement Technology and Instrument from Tianjin University and M.Sc. in Material Science Engineering from the University of California\, San Diego He is currently a Ph.D. student in the WISE Research Group working on miniaturized OECTs systems for wearable applications. He is a key contributor to the “PERfECT” system which is the world`s smallest system for wearable OECT characterization. \nOrganiser\nProf. Shiming Zhang \nAll are welcome.
URL:https://ece.hku.hk/events/20240912-3/
LOCATION:Room CB-603\, 6/F\, Chow Yei Ching Building\, The University of Hong Kong
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://ece.hku.hk/wp-content/uploads/2024/11/rpg-seminar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Hong_Kong:20240912T200000
DTEND;TZID=Asia/Hong_Kong:20240912T210000
DTSTAMP:20260512T135022
CREATED:20240906T081639Z
LAST-MODIFIED:20250114T041532Z
UID:19102-1726171200-1726174800@ece.hku.hk
SUMMARY:RPG Seminar – Stretchable\, Sticky\, and Sensorized Hydrogel Dressing for Wound Monitoring System
DESCRIPTION:Abstract\nChronic wounds resulting from underlying diseases like diabetes pose a significant healthcare challenge\, necessitating continuous monitoring and timely intervention to avoid medical complications. Smart bandages integrating multifunctional sensors offer the potential for monitoring chronic wounds caused by diabetes and other underlying diseases\, thereby relieving hospitals from labor-intensive analysis and avoiding medical delays. We fabricated a stretchable organic electrochemical transistor (OECT)-based sensing technology which is a reference electrode-free technique with high sensitivity and excellent tissue compatibility. To ensure patient comfort and convenience\, the OECT-based glucose sensors are seamlessly integrated into a coin-sized wearable readout system and a durable hydrogel dressing patch. In the end\, we also integrated a conductive hydrogel dressing for wound healing. This innovative design renders the sensors imperceptible to patients\, promoting compliance with the monitoring regimen. This work represents a significant step forward in developing digital wearables for chronic wound care and holds promise in transforming the landscape of chronic wound management. \nSpeaker\nMr. Cui Binbin\nDepartment of Electrical and Electronic Engineering\,\nThe University of Hong Kong \nBiography of the speaker\nMr. Binbin Cui received his B.S. in Applied Chemistry from Nankai University. He was a research intern in the Stoddart group at Northwestern University for Supramolecular Chemistry research. He is interested in the chemical and electrochemical functionalization of thin-film electrodes for molecular analysis\, and conductive hydrogel for wearable devices application. He is currently a Ph.D. student in the WISE Research Group working on OECT-based biosensors for healthcare applications. \nOrganiser\nProf. Shiming Zhang \nAll are welcome.
URL:https://ece.hku.hk/events/20240912-4/
LOCATION:Room CB-603\, 6/F\, Chow Yei Ching Building\, The University of Hong Kong
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://ece.hku.hk/wp-content/uploads/2024/11/rpg-seminar.jpg
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