A5101923707- 3D IC and TSV technologies
- Advanced Sensor and Energy Harvesting Materials
- Semiconductor materials and devices
- Asthma and respiratory diseases
- Electronic Packaging and Soldering Technologies
- Low-power high-performance VLSI design
- Electromagnetic Compatibility and Noise Suppression
- Conducting polymers and applications
- Additive Manufacturing and 3D Printing Technologies
- Non-Invasive Vital Sign Monitoring
- Parallel Computing and Optimization Techniques
- Nanofabrication and Lithography Techniques
- Respiratory and Cough-Related Research
- Integrated Circuits and Semiconductor Failure Analysis
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Advanced Memory and Neural Computing
- Nanomaterials and Printing Technologies
- Polydiacetylene-based materials and applications
- Analytical Chemistry and Sensors
- Organic Electronics and Photovoltaics
- Gas Sensing Nanomaterials and Sensors
- Semiconductor Lasers and Optical Devices
- Wireless Body Area Networks
- Ocular Surface and Contact Lens
Korea Institute of Science and Technology
2022-2025
Hallym University Sacred Heart Hospital
2014-2025
Northwestern University
2021-2024
Hallym University
2013-2024
The University of Western Australia
2024
Sungkyunkwan University
2024
Ulsan National Institute of Science and Technology
2014-2023
Konkuk University
2023
SK Group (South Korea)
2010-2023
Yonsei University
2008-2022
Abstract Wearable contact lenses which can monitor physiological parameters have attracted substantial interests due to the capability of direct detection biomarkers contained in body fluids. However, previously reported lens sensors only a single analyte at time. Furthermore, such ocular generally obstruct field vision subject. Here, we developed multifunctional sensor that alleviates some these limitations since it was on an actual lens. It also designed glucose within tears, as well...
This study presents a soft, smart contact lens that provides real-time sensing for diabetes through wireless display.
We propose a high-frequency scalable electrical model of through silicon via (TSV). The proposed includes not only the TSV, but also bump and redistribution layer (RDL), which are additional components when using TSVs for 3-D integrated circuit (IC) design. is developed with analytic <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">RLGC</i> equations derived from physical configuration. Each equation as function design parameters bump, RDL,...
Showing their true colors: Polymers based on polydiacetylene and imidazolium show selective color response to anionic surfactants. Furthermore, this system easily distinguishes between the surfactants sodium dodecyl sulfate (SDS) dodecylbenzenesulfonic acid (SDBS).
Despite various approaches to immunoassay and chromatography for monitoring cortisol concentrations, conventional methods require bulky external equipment, which limits their use as mobile health care systems. Here, we describe a human pilot trial of soft, smart contact lens real-time detection the concentration in tears using smartphone. A sensor formed graphene field-effect transistor can measure with limit 10 pg/ml, is low enough detect tears. In addition, this soft only requires...
Abstract Integrated electronic circuitries with pressure sensors have been extensively researched as a key component for emerging electronics applications such skins and health-monitoring devices. Although existing display high sensitivities, they can only be used specific purposes due to the narrow range of detectable (under tens kPa) difficulty forming highly integrated arrays. However, it is essential develop tactile wide in order use them diverse application areas including medical...
Temporary postoperative cardiac pacing requires devices with percutaneous leads and external wired power control systems. This hardware introduces risks for infection, limitations on patient mobility, requirements surgical extraction procedures. Bioresorbable pacemakers mitigate some of these disadvantages, but they demand pairing external, systems secondary mechanisms control. We present a transient closed-loop system that combines time-synchronized, wireless network skin-integrated an...
Herein, we report the fabrication of a highly stretchable, transparent gas sensor based on silver nanowire-graphene hybrid nanostructures. Due to its superb mechanical and optical characteristics, fabricated demonstrates outstanding stable performances even under extreme deformation (stable until 20% strain). The integration Bluetooth system or an inductive antenna enables wireless operation sensor. In addition, robustness materials allows device be transferred onto various nonplanar...
Skin-interfaced wearable systems with integrated colorimetric assays, microfluidic channels, and electrochemical sensors offer powerful capabilities for noninvasive, real-time sweat analysis. This Perspective details recent progress in the development translation of novel personalized assessment dynamics biomarkers, precise sampling Sensor accuracy, system ruggedness, large-scale deployment remote environments represent key opportunity areas, enabling broad context field studies, clinical...
Integration of a smart contact lens and heat patch realizes personal management ocular surface diseases wirelessly.
Abstract Tears have emerged as a promising alternative to blood for diagnosing diabetes. Despite increasing attempts measure tear glucose using smart contact lenses, the controversy surrounding correlation between and still limits clinical usage of tears. Herein, we present an in-depth investigation wireless soft lens continuous monitoring glucose. This is capable quantitatively levels in basal tears excluding effect reflex which might weaken relationship with Furthermore, this can provide...
Transparent and stretchable electronics with remarkable bendability, conformability, lightness are the key attributes for sensing or wearable devices. field-effect transistor sensors using graphene-metal nanowire hybrid nanostructures have high mobility (≈3000 cm(2) V(-1) s(-1) ) low contact resistance, they transferrable onto a variety of substrates. The integration these RLC circuits enables wireless monitoring.
In three-dimensional integrated circuit (3D-IC) systems that use through-silicon via (TSV) technology, a significant design consideration is the coupling noise to or from TSV. It important estimate TSV transfer function and manage noise-tolerance budget in of reliable 3D-IC system. this paper, model proposed based on transmission line matrix method (3D-TLM). Using model, functions active can be precisely estimated complicated 3D structures, including TSVs, circuits, shielding structures such...
Wirelessly rechargeable solid-state supercapacitors are studied for soft, smart contact lenses with continuous operations.
The impedance of a power-distribution network (PDN) in three-dimensionally stacked chips with multiple through-silicon-via (TSV) connections (a 3D TSV IC) was modeled and analyzed using power/ground (P/G) array model based on separated P/G chip-PDN models at frequencies up to 20 GHz. proposed modeling analysis methods for the are fundamental estimating PDN impedances ICs because they composed several chip-PDNs thousands connections. Using model, we obtained very efficient analyses...
Here we report an unconventional approach for the single-step synthesis of monolithically integrated electronic devices based on multidimensional carbon structures. Integrated arrays field-effect transistors and sensors composed nanotube channels graphitic electrodes interconnects were formed directly from synthesis. These fully integrated, all-carbon are highly flexible can be transferred onto both planar nonplanar substrates, including papers, clothes, fingernails. Furthermore, sensor...
Abstract The cuticles of insects and marine crustaceans are fascinating models for man‐made advanced functional composites. excellent mechanical properties these biological structures rest on the exquisite self‐assembly natural ingredients, such as biominerals, polysaccharides, proteins. Among them, two commonly found building blocks in model biocomposites chitin nanofibers silk‐like proteins with β‐sheet structure. Despite being wholly organic, chitinous protein complex plays a key role by...
In addition to the demand for stimuli-responsive sensors that can detect various vital signals in epidermal skin, development of electronic skin displays quantitatively and visualize stimuli such as temperature, sweat gland activity, conductance simultaneously are significant interest emerging human-interactive electronics used health monitoring. Herein, a novel interactive display with electrode (ISDEE) allowing simultaneous sensing multiple on single device is presented. It based simple...
Abstract The eyes can provide rich physiological information and offer broad diagnostic potential as a sensing site, making the use of contact lens sensors viable for noninvasive monitoring many diseases conditions. Therefore, extensive research efforts recently are devoted to development smart lenses healthcare monitoring. Herein, physical biomarkers, which be obtained from eyes, chemical tears discussed. Then, latest advances in with biosensors that diagnose reviewed. subsequent content...
Soft, skin-integrated electronic sensors can provide continuous measurements of diverse physiological parameters, with broad relevance to the future human health care. Motion artifacts can, however, corrupt recorded signals, particularly those associated mechanical signatures cardiopulmonary processes. Design strategies introduced here address this limitation through differential operation a matched, time-synchronized pair high-bandwidth accelerometers located on parts anatomy that exhibit...
Nutrients play critical roles in maintaining core physiological functions and preventing diseases. Technologies for delivering these nutrients monitoring their concentrations can help to ensure proper nutritional balance. Eccrine sweat is a potentially attractive class of biofluid purposes due the ability capture easily noninvasively from nearly any region body using skin-integrated microfluidic technologies. Here, miniaturized system this type presented that allows simple, rapid...