A5069674162- Advanced Sensor and Energy Harvesting Materials
- Neuroscience and Neural Engineering
- Conducting polymers and applications
- Nanomaterials and Printing Technologies
- Tactile and Sensory Interactions
- Electrospun Nanofibers in Biomedical Applications
- Nanowire Synthesis and Applications
- Nerve injury and regeneration
- Advanced Chemical Sensor Technologies
- Cardiomyopathy and Myosin Studies
- ZnO doping and properties
- Analytical Chemistry and Sensors
- Electronic Packaging and Soldering Technologies
- Gas Sensing Nanomaterials and Sensors
- Non-Invasive Vital Sign Monitoring
- Cardiac pacing and defibrillation studies
- 3D Printing in Biomedical Research
- Respiratory Support and Mechanisms
- Additive Manufacturing and 3D Printing Technologies
- Aluminum Alloys Composites Properties
- Wireless Power Transfer Systems
- Fuel Cells and Related Materials
- Dielectric materials and actuators
- Muscle activation and electromyography studies
- Advanced Materials and Mechanics
Korea University
2004-2025
Northwestern University
2018-2024
University of Ulsan
2024
Asan Medical Center
2024
Ulsan College
2024
Korea Electrotechnology Research Institute
2024
Seoul National University
2024
Kwangwoon University
2024
Dankook University
2024
University of California, Santa Barbara
2024
In this work, the authors report materials, fabrication strategies, and applications of biodegradable microsupercapacitors (MSCs) built using water‐soluble (i.e., physically transient) metal (W, Fe, Mo) electrodes, a biopolymer, hydrogel electrolyte (agarose gel), poly(lactic‐ co ‐glycolic acid) substrate, encapsulated with polyanhydride. During repetitive charge/discharge cycles, electrochemical performance these unusual MSCs is dramatically enhanced, following from role pseudocapacitance...
Abstract Bioresorbable electronic stimulators are of rapidly growing interest as unusual therapeutic platforms, i.e., bioelectronic medicines, for treating disease states, accelerating wound healing processes and eliminating infections. Here, we present advanced materials that support operation in these systems over clinically relevant timeframes, ultimately bioresorbing harmlessly to benign products without residues, eliminate the need surgical extraction. Our findings overcome key...
Abstract Transient electronics represents an emerging technology whose defining feature is ability to dissolve, disintegrate or otherwise physically disappear in a controlled manner. Envisioned applications include resorbable/degradable biomedical implants, hardware-secure memory devices, and zero-impact environmental sensors. 2D materials may have essential roles these systems due their unique mechanical, thermal, electrical, optical properties. Here, we study the bioabsorption of CVD-grown...
Recent advances in materials chemistry establish the foundations for unusual classes of electronic systems, characterized by their ability to fully or partially dissolve, disintegrate, otherwise physically chemically decompose a controlled fashion after some defined period stable operation. Such types "transient" technologies may enable consumer gadgets that minimize waste streams associated with disposal, implantable sensors disappear harmlessly body, and hardware-secure platforms prevent...
Capabilities for continuous monitoring of pressures and temperatures at critical skin interfaces can help to guide care strategies that minimize the potential pressure injuries in hospitalized patients or individuals confined bed. This paper introduces a soft, skin-mountable class sensor system this purpose. The design includes pressure-responsive element based on membrane deflection battery-free, wireless mode operation capable multi-site measurements strategic locations across body. Such...
Abstract Individuals who are unable to walk independently spend most of the day in a wheelchair. This population is at high risk for developing pressure injuries caused by sitting. However, early diagnosis and prevention these still remain challenging. Herein, we introduce battery-free, wireless, multimodal sensors movable system continuous measurement pressure, temperature, hydration skin interfaces. The device design includes crack-activated sensor with nanoscale encapsulations enhanced...
Treating peripheral nerve injury (PNI) is a prevalent clinical challenge. The improper dispersion of regenerating axons makes it difficult to develop guidance conduits (NGCs) for treating PNI. multichannel NGCs, designed mimic the fascicular structure nerves, are proposed as an alternative single hollow lumen NGCs. Hydrogel-based NGCs with microscale multichannels resembling actual fascicles fabricated using digital light processing 3D printing. Gelatin methacryloyl (GelMA) and polyethylene...
Abstract This paper introduces super absorbent polymer valves and colorimetric sensing reagents as enabling components of soft, skin‐mounted microfluidic devices designed to capture, store, chemically analyze sweat released from eccrine glands. The valving technology enables robust means for guiding the flow an inlet location into a collection isolated reservoirs, in well‐defined sequence. Analysis these reservoirs involves color responsive indicator chloride concentration with formulation...
In this work, we synthesized uniform Cu–Ag core–shell nanoparticles using a facile two-step process that consists of thermal decomposition and galvanic displacement methods. The structure these was confirmed through characterization transmission electron microscopy, energy-dispersive spectroscopy, x-ray diffraction. Furthermore, investigated the oxidation stability in detail. Both qualitative quantitative photoelectron spectroscopy analyses confirm have considerably higher than Cu...
Soft microfluidic systems that capture, store, and perform biomarker analysis of microliter volumes sweat, in situ, as it emerges from the surface skin, represent an emerging class wearable technology with powerful capabilities complement those traditional biophysical sensing devices. Recent work establishes applications real-time characterization sweat dynamics chemistry context sports performance healthcare diagnostics. This paper presents a collection advances biochemical sensors designs...
Bioresorbable drug release platforms offer advanced treatment for hormone imbalances, malignant cancers, and diabetic conditions.
Abstract Emerging classes of bioresorbable electronic materials serve as the basis for active biomedical implants that are capable providing sensing, monitoring, stimulating, and other forms function over an operating period matched to biological processes such wound healing. These platforms interest because subsequent dissolution, enzymatic degradation, and/or bioresorption can eliminate need surgical extraction. This report introduces natural wax long‐lived, hydrophobic encapsulation...
Abstract Sweat excretion is a dynamic physiological process that varies with body position, activity level, environmental factors, and health status. Conventional means for measuring the properties of sweat yield accurate results but their requirements sampling analytics do not allow use in field. Emerging wearable devices offer significant advantages over existing approaches, each has drawbacks associated bulk weight, inability to quantify volumetric rate loss, robustness, and/or inadequate...
Abstract Biodegradable electronic systems represent an emerging class of technology with unique application possibilities, from temporary biomedical implants to “green” consumer gadgets. This paper introduces materials and processing methods for 3D, heterogeneously integrated devices this type, various functional examples in sophisticated forms silicon‐based electronics. Specifically, techniques performing multilayer assembly by transfer printing fabricating layer‐to‐layer vias interconnects...
Abstract Bioresorbable electronic systems represent an emerging class of technology interest due to their ability dissolve, chemically degrade, disintegrate, and/or otherwise physically disappear harmlessly in biological environments, as the basis for temporary implants that avoid need secondary surgical extraction procedures. Polyanhydride‐based polymers can serve hydrophobic encapsulation layers such systems, a subset broader field transient electronics, where biodegradation eventually...
Soft microfluidics with reference reactions enable quantitative sweat ammonia–ethanol assay.
Abstract Pressures in the intracranial, intraocular, and intravascular spaces are important parameters assessing patients with a range of conditions, particular relevance to those recovering from injuries or surgical procedures. Compared conventional devices, sensors that disappear by natural processes bioresorption offer advantages this context, eliminating costs risks associated retrieval. A class bioresorbable pressure sensor is capable operational lifetimes as long several weeks physical...
Abstract Bioresorbable electronic technologies form the basis for classes of biomedical devices that undergo complete physical and chemical dissolution after a predefined operational period, thereby eliminating costs risks associated with secondary surgical extraction. A continuing area opportunity is in development strategies power supply these systems, where previous studies demonstrate some utility biodegradable batteries, radio frequency harvesters, solar cells, others. This paper...