A5057134120- Advanced Sensor and Energy Harvesting Materials
- Mobile Ad Hoc Networks
- Discourse Analysis in Language Studies
- Magnetic and transport properties of perovskites and related materials
- Natural Language Processing Techniques
- Tactile and Sensory Interactions
- Advanced MIMO Systems Optimization
- Conducting polymers and applications
- Physics of Superconductivity and Magnetism
- Language, Metaphor, and Cognition
- Gas Sensing Nanomaterials and Sensors
- Distributed systems and fault tolerance
- Cloud Computing and Resource Management
- Syntax, Semantics, Linguistic Variation
- IPv6, Mobility, Handover, Networks, Security
- Advancements in PLL and VCO Technologies
- Cooperative Communication and Network Coding
- Caching and Content Delivery
- Antenna Design and Optimization
- Gold and Silver Nanoparticles Synthesis and Applications
- Radio Frequency Integrated Circuit Design
- Advanced Authentication Protocols Security
- linguistics and terminology studies
- Nanomaterials and Printing Technologies
- Full-Duplex Wireless Communications
Samsung (South Korea)
2024-2025
Syracuse University
2023
Chosun University
2022
Yonsei University
2014-2020
Sungkyunkwan University
1990-2019
Samsung (United States)
2019
Government of the Republic of Korea
2016
Korea University
2004-2012
Seoul National University
2000-2001
National Institute of Technology
1998
Stretchable conductive fibers have received significant attention due to their possibility of being utilized in wearable and foldable electronics. Here, highly stretchable fiber composed silver nanowires (AgNWs) nanoparticles (AgNPs) embedded a styrene–butadiene–styrene (SBS) elastomeric matrix is fabricated. An AgNW‐embedded SBS fabricated by simple wet spinning method. Then, the AgNPs are formed on both surface inner region via repeated cycles precursor absorption reduction processes. The...
A flexible pressure sensor with high performances is one of the promising candidates for achieving electronic skins (E‐skin) related to various applications such as wearable devices, health monitoring systems, and artificial robot arms. The sensitive response external mechanical stimulation fundamentally required develop E‐skin which imitates function human skin. performance capacitive sensors can be improved using morphologies structures occurring in nature. In this work, highly based on a...
Highly stretchable fiber strain sensors are one of the most important components for various applications in wearable electronics, electronic textiles, and biomedical electronics. Herein, we present a facile approach fabricating highly sensitive by embedding Ag nanoparticles into with multifilament structure. The structure Ag-rich shells sensor enable to simultaneously achieve both high sensitivity largely wide sensing range despite its simple fabrication process components. exhibits...
A polymer membrane-coated palladium (Pd) nanoparticle (NP)/single-layer graphene (SLG) hybrid sensor was fabricated for highly sensitive hydrogen gas (H2) sensing with selectivity. Pd NPs were deposited on SLG via the galvanic displacement reaction between graphene-buffered copper (Cu) and ion. During reaction, used as a buffer layer, which transports electrons from Cu to nucleate surface. The surface well-distributed high uniformity low defects. NP/SLG then coated membrane layer selective...
Abstract Conductive fibers, which are highly adaptable to the morphologies of human body, attractive for development wearable systems, smart clothing, and textronics detect various biological signals motions. A fiber‐based conductive sensor interconnected with hierarchical microhairy architectures, exhibiting remarkable stretchability (<200%) sensitivity stimuli (pressure, stretching, bending), is developed. For distinguishability multiple gestures, two hairy fibers twisted fabricate a...
Abstract Stretchable interconnects with invariable conductivity and complete elasticity, which return to their original shape without morphological hysteresis, are attractive for the development of stretchable electronics. In this study, a polydimethylsiloxane‐coated multifilament polyurethane‐based helical conductive fiber is developed. The fibers exhibit remarkable electrical performance under stretching, negligible mechanical high reliability repetitive deformation (10 000 cycles...
Nanoscale architectures found in nature have unique functionalities and their discovery has led to significant advancements various fields including optics, wetting, adhesion. The sensilla of arthropods, comprised hierarchical structures, are a representative example which inspired the development bioinspired systems, owing hypersensitive ultrafast responsivity mechanical chemical stimuli. This report presents geometry‐switchable highly H 2 ‐reactive Janus nanofiber (H‐NF) array by...
A novel droplet‐based surface‐enhanced Raman scattering (SERS) sensor for high‐throughput real‐time SERS monitoring is presented. The developed sensors are based on a droplet‐guiding‐track‐engraved superhydrophobic substrate covered with hierarchical SERS‐active Ag dendrites. droplet‐guiding track droplet stopper designed to manipulate the movement of substrate. dendritic substrates fabricated through galvanic displacement reaction and subsequent self‐assembled monolayer coating. optimal...
The fabrication of well-ordered metal nanoparticle structures onto a desired substrate can be effectively applied to several applications. In this work, Ag line arrays were printed on the without use glue materials. success method relies assembly nanoparticles anisotropic buckling templates and special transfer process where small amount water rather than materials is employed. made have various wavelengths by changing degree prestrain in step. assembled trough via dip coating successfully...
In this paper, we propose a multiple-input multiple-output receiver with deep learning. To obtain the high performance of maximum likelihood while maintaining low computational complexity linear receiver, apply signal-to-noise ratio-based receiver-type decision method. Specifically, criterion and threshold, which are based on ratio between symbol error probabilities both receivers, to decide type presented. For this, analyze gain zero-forcing exploit it as an input feature DNN. The...
In this work, we have demonstrated chemically coupled (3-aminopropyl)trimethoxysilane (APTMS) and 3-mercaptopropionic acid (MPA) self-assembled monolayers (SAMs) to enhance the diffusion barrier properties against copper (Cu) as well adhesion towards SiO2 Cu electrode. The coupled-SAM (C-SAM) can attach both strongly which is expected properties. A carbodiimide-mediated amidation process was used link NH2 terminated APTMS COOH MPA. resulting C-SAM shows a low root-mean-square roughness of...
The ultrafast bouncing motion of a liquid droplet has been investigated for manipulation with single actuator using an electrostatic force the first time.
The need for wearable electronic devices continues to grow, and the research is under way stretchable fiber-type sensors that are sensitive surrounding atmosphere will provide proficient measurement capabilities. Currently, one-dimensional fiber have several limitations their extensive use because of complex structures sensing mechanisms. Thus, it essential miniaturize these materials with durability while integrating multiple Herein, we present an ultrasensitive conductive sensor using PdNP...
This paper proposes a deep learning-based channel estimation method for multiple-input multiple-output (MIMO) systems in spatially correlated channels. To reduce the pilot overhead of symbol-assisted estimation, proposed utilizes fewer symbols than number transmit antennas. Firstly, based on symbols, estimated partial MIMO matrix, consisting coefficients is obtained by linear minimum mean square error algorithm. After that, neural network uses matrix as an input and we have predicted that...
Stretchable conductive fiber is spotlighted by T. Lee on page 3114 because of the possibility being utilized in wearable and foldable electronics. Highly stretchable composed silver nanowires nanoparticles a polymer can be fabricated using simple wet spinning method use precursor. The composite embedded into gloves to perceive human motions.
In this paper, a simple piezoelectric floating mass transducer (PFMT) for implantable middle ear hearing devices (IMEHDs) is proposed and its modeling designing are studied. The which can be implanted in the meddle consists of PMN-PT multi-layered actuator, an elastic material, metal case. has structure force generated from actuator efficiently transferred to ossicles ear. For analysis vibration characteristics, attached on ossicle simplified into mechanical model considering incus. And...
S. Kang et al. report a flexible and highly sensitive pressure sensor developed using deformable dielectric layer inspired by natural porous structures in article number 1600356. This exhibits an outstanding sensitivity, fast response, high stability. It is successfully integrated into array applied to fabricate real-time tactile sensing platform.