A5031610536- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Nanomaterials and Printing Technologies
- Nanofabrication and Lithography Techniques
- Tactile and Sensory Interactions
- Organic Electronics and Photovoltaics
- Muscle activation and electromyography studies
- Planarian Biology and Electrostimulation
- Analytical Chemistry and Sensors
- Advanced ceramic materials synthesis
- Microbial Metabolites in Food Biotechnology
- Quantum Dots Synthesis And Properties
- Fluid Dynamics and Thin Films
- Wireless Body Area Networks
- Polydiacetylene-based materials and applications
- Advanced Chemical Sensor Technologies
- Luminescence and Fluorescent Materials
- Graphene and Nanomaterials Applications
- Advanced Nanomaterials in Catalysis
- ZnO doping and properties
- Modular Robots and Swarm Intelligence
- Additive Manufacturing and 3D Printing Technologies
- Advanced Photocatalysis Techniques
- Organoselenium and organotellurium chemistry
- Consumer Market Behavior and Pricing
Sungkyunkwan University
2017-2024
Korea Testing Laboratory
2024
Northwestern University
2023
Institute for Basic Science
2017
Universitas 17 Agustus 1945 Semarang
2007
Bioelectronics needs to continuously monitor mechanical and electrophysiological signals for patients. However, the always include artifacts by patients' unexpected movement (such as walking respiration under approximately 30 hertz). The current method remove them is a signal process that uses bandpass filter, which may cause loss. We present an unconventional filter material-viscoelastic gelatin-chitosan hydrogel damper, inspired viscoelastic cuticular pad in spider-to dynamic noise...
Abstract Squaraine dyes (SQs) are an important class of polymethine with a unique reasonable‐stabilized zwitterionic structure, in which electrons highly delocalized over the conjugated bridge. These can not only be easily synthesized via condensation, but also exhibit intense absorption and emission visible near‐infrared region excellent photochemical stability, making them attractive material candidates for many photoelectric biomedical applications. Thus, this review, after introduction...
We suggest gelatin hydrogel as an electrolyte and demonstrate organic electrochemical transistors (OECTs) based on a sheet of gelatin. also modulate electrical characteristics the OECT with respect to pH condition from acid base analyze its theory. Moreover, we extend gelatin-based logic circuits, for example, NOT, NOR, NAND gates.
Abstract Biocompatible, biodegradable, and solid‐state electrolyte‐based organic transistors are demonstrated. As the electrolyte is composed of all edible materials, which levan polysaccharide choline‐based ionic liquid, transistor fabricated on can be biocompatible biodegrable. Compared to other ion gel based electrolytes, it has superior electrical mechanical properties, large specific capacitance (≈40 µF cm −2 ), non‐volatility, flexibility, high transparency. Thus, shows reliability by...
This study explores the depollution activity of a photocatalytic cementitious composite comprising various compositions n-TiO
Abstract As one of conducting polymers, PEDOT:PSS, is commonly used in organic electronics, especially for bioelectronics due to its advantages such as high electrical and ionic conductivity, solution-processability biocompatibility. Creating with the PEDOT:PSS requires advanced techniques obtain physical/chemical modification improved performance various applications. To satisfy these demands, fibrillary gelation by injection choline acetate, an liquid, a constant flow rate was this study...
Abstract New options in the material context of transient electronics are essential to create or expand potential applications and progress face technological challenges. A soft, transparent, cost‐effective polymer levan polysaccharide that is capable complete, programmable dissolution described when immersed water implanted an animal model. The results include chemical analysis, kinetics hydrolysis, adjustable rates levan, a simple theoretical model reactive diffusion governed by...
As stretchable electronics are rapidly developing and becoming complex, the requirement for stretchable, multilayered, large-area printed circuit boards (PCBs) is emerging. This demands a electrode its vertical interconnect access (via) 3-dimensional (3D) connectivity between layers. Here, we demonstrate solvent-assisted liquid metal (LM) filling into submicrometer channel (∼400 nm), including via-hole selective dewetting of LM. We provide theoretical background LM reveal osmotic pressure...
Chronic wounds represent a major health risk for diabetic patients. Regeneration of such requires regular medical treatments over periods that can extend several months or more. Schemes monitoring the healing process provide important feedback to patient and caregiver. Although qualitative indicators as malodor fever some indirect information, quantitative measurements wound bed have potential yield insights. The work presented here introduces materials engineering designs wireless system...
Abstract Ion‐conducting polymers such as hydrogels have soft, flexible, and stretchable properties that enable humans to intimately interact with other living things. They are important components of cells, tissue, organs the human being. Interestingly, these possess sufficient mobile ions more sensitive external stimuli tactility, temperature, biological molecules, electrical polarization than conventional solid‐state materials metals oxides. The objective this review is summarize recent...
Nanofabrication is an indispensable process in nanoscience and nanotechnology. Unconventional lithographic techniques are often used for fabrication as alternatives to photolithography because they faster, more cost‐effective, simpler use. However, these limited scalability utility of the collapse preprinted structures during step‐and‐repeat processes. This study proposes a new class temperature‐controllable polymeric molds that coated with metal such any site‐specific patterning can be...
In article number 1909707, Tae-il Kim and co-workers demonstrate a biodegradable biocompatible solid-state electrolyte for organic transistors based on choline-based ionic liquid polysaccharide, which serves as the substrate dielectric with good reliability under mechanical deformation low-voltage operation. This approach can introduce main component of soft bio-integrated electronics by measuring signals from skin other human organs.
Abstract State‐of‐the‐art biosignal monitoring systems strive to achieve a balance between biocompatibility, biodegradability, and miniaturized, unobtrusive signal acquisition, thus requiring further research for improved user safety, mobility, comfort. Here, fully wireless sensing system is presented real‐time in vivo assessment of physiological vital signs, addressing these challenges enhance performance experience. The features biodegradable passive tag with nanoscale crack‐based strain...
Squaraine dyes (SQs) are a promising class of organic functional materials with facile synthesis, unique molecular structures, and excellent optoelectronic properties. In article number 2008201, Tae-il Kim, Zhong'an Li, co-workers discuss design principles that allow SQs to be applied in photovoltaic devices as biosensors, bioimaging, phototherapy reagents. Moreover, perspective the future opportunities challenges for is also presented.
Calcium-hexaluminate phase(CA6) phase is known to be effective for the crack shielding due spinel block crystal structure. In this study, we focused control CA6 morphology good damage tolerance behavior in alumina and zirconia/calcium-hexaluminate(CA6) composites. calcium-hexaluminate(CA6) composites were prepared from zirconia, calcium carbornate powders. Calcium-hexaluminate(CA6) was obtained by solid reaction through formation of intermediate phase(CA2). showed column type abnormal grain...
Gasoline prices vary across Korea. Some gas stations charge higher prices, while others lower prices. In this paper, we try to find: why gasoline differ markedly regions. We empirically estimate the determinants of by incorporating supply side factors as well demand into empirical model. Empirical results show that both location-specific and store-specific affect Concentration competing stores, store brands, ownership stations, self-service availability influence addition, other customer...
In article number 1702993, Kwang Su Kim, Jong Uk and co-workers present a hierarchical structure created by multiple molding with metal-coated mold, which is able to precisely control its temperature via joule-heating. Due the characteristics of this technique has great potential for large-area programmable patterning, 3D structuring step-and-repeat processes.