A5101610531- Antibiotic Resistance in Bacteria
- MXene and MAX Phase Materials
- 2D Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Vibrio bacteria research studies
- Tactile and Sensory Interactions
- Energy Harvesting in Wireless Networks
- Underwater Vehicles and Communication Systems
- Advanced Battery Materials and Technologies
- Advanced Wireless Communication Technologies
- Photoacoustic and Ultrasonic Imaging
- Bacterial biofilms and quorum sensing
- Advancements in Battery Materials
- Cancer Genomics and Diagnostics
- scientometrics and bibliometrics research
- Conducting polymers and applications
- Graphene research and applications
- Full-Duplex Wireless Communications
- Optical Coherence Tomography Applications
- DNA Repair Mechanisms
- Microwave Dielectric Ceramics Synthesis
- Antibiotic Use and Resistance
- Supercapacitor Materials and Fabrication
- Ultrasound Imaging and Elastography
- BRCA gene mutations in cancer
Yonsei University
2021-2024
Kyung Hee University
2024
Korea Research Institute of Chemical Technology
2021-2024
Sungkyunkwan University
2016-2023
Pohang University of Science and Technology
2018-2023
Yonsei University Health System
2023
Myongji University
2016-2022
Kookmin University
2020
Sookmyung Women's University
2018
California Maritime Academy
2015
Human skin has different types of tactile receptors that can distinguish various mechanical stimuli from temperature. We present a deformable artificial multimodal ionic receptor differentiate thermal and information without signal interference. Two variables are derived the analysis ion relaxation dynamics: charge time as strain-insensitive intrinsic variable to measure absolute temperature normalized capacitance temperature-insensitive extrinsic strain. The with simple...
Significance Multimodal imaging based on optics and ultrasound can provide guide images complementary structural functional information, thus improving the accuracy of medical diagnosis treatment monitoring. However, because conventional transducers are opaque, in multimodal with optics, optical devices must be placed off-axis from transducer. This arrangement is prone to misalignment, adds complexity bulk system, result a low signal-to-noise-ratio. Here, we present transparent transducer at...
Despite the advance of on-skin sensors over last decade, a sensor that solves simultaneously critical issues for using in everyday life, such as stable performance various environments, use long period time, and repeated by easy handling, has not yet been achieved. Here, we introduce an auxetic hygroscopic meets all conditions. The structure with negative Poisson's ratio matches deformation skin ankles; hence, conformal contact between could be maintained during movements. Sweat was absorbed...
In fast and transient somatosensory processing, the relative timing of selected spikes is more important than spike frequency because ensemble first in trains encodes dynamic tactile information. Here, inspired by functional effectiveness spikes, we propose an artificial sensory system based on position-encoded spectrum. We use a mixed ion-electron conductor to generate potential signal. design receptors that have different ion relaxation times (τ); thus, sequence from creates spectrum,...
For the past two decades, researches on stretchable physical sensors have made great technological advances, and been applied to various applications such as electronic skin for robots, haptic devices, bionics, wearable/implantable healthcare sensors, etc. The deformable investigated in approaches: with well-developed fabrication technologies iontronic a new alternative. There has wide spectrum of branching from approaches. They evolved simple-structured single function into high-resolution...
Drug-induced cardiotoxicity is regarded as a major hurdle in the early stages of drug development. Although there are various methods for preclinical tests, they cannot completely predict cardiotoxic potential compound due to lack physiological relevance. Recently, 3D engineered heart tissue (EHT) has been used investigate cardiac muscle functions well pharmacological effects by exhibiting auxotonic contractions. However, still no adequate platform continuous monitoring test acute and...
Abstract In this work, high‐quality 1D van der Waals (vdW) Nb 2 Pd 3 Se 8 is synthesized, showing an excellent scalability from bulk to single‐ribbon due weakly bonded repeating unit ribbons. The calculation of electronic band structures confirmed that novel a semiconducting material, displaying indirect‐to‐direct bandgap transition with decreasing the number unit‐ribbons single. Field effect transistors (FETs) fabricated on mechanically exfoliated nanowires exhibit n‐type transport...
Abstract Background Cyclin-dependent kinase 4 and 6 (CDK4/6) inhibitors have been established as a standard treatment for hormone receptor (HR)-positive, human epidermal growth factor 2 (HER2)-negative advanced breast cancer (ABC); however, predictive biomarkers with translational relevance not yet elucidated. Methods Data from postmenopausal women who received the CDK4/6 inhibitor palbociclib letrozole HR-positive, HER2-negative ABC tertiary referral centers were analyzed ( N = 221;...
Resistance to β-lactams is one of the most serious problems associated with Gram-negative infections. β-Lactamases are able hydrolyze such as cephalosporins and/or carbapenems. Evolutionary origin metallo-β-lactamases (MBLs), conferring critical antibiotic resistance threats, remains unknown. We discovered PNGM-1, novel subclass B3 MBL, in deep-sea sediments that predate era. Here, our phylogenetic analysis suggests PNGM-1 yields insights into evolutionary MBLs. reveal structural...
Abstract Lithium (Li) metal is widely acknowledged as the most promising anode material, owing to its high capacity and low potential. However, practical implementation of Li faces challenges, including uncontrollable dendritic growth a deficient solid electrolyte interphase (SEI). Here straightforward method provided for fabricating composites using Al‐doped 7 La 3 Zr 2 O 12 particles (Li/LLZO) with Li‐ion conductivity achieved mechanical kneading process. The optimized composite, 20% LLZO...
In the last decade, extensive studies have been conducted to realize functions of human skin based on stretchable electronics. An artificial skin, recognizing complex mechanical stimulation including pressure, strain and shear, composed transparent material, is an essential goal but has hardly achieved. We fabricated a integrated sensor system that can sense direction normal pressure applied stimulation. Each micropatterned Ag nanowire, forming composite conductor with block copolymer...
Abstract In this study, high‐purity and centimeter‐scale bulk Ta 2 Ni 3 Se 8 crystals are obtained by controlling the growth temperature stoichiometric ratio between tantalum, nickel, selenium. It is demonstrated that could be effectively exfoliated into a few chain‐scale nanowires through simple mechanical exfoliation liquid‐phase exfoliation. Also, calculation of electronic band structures confirms semiconducting material with small bandgap. A field‐effect transistor successfully...
In this paper, we implemented the Side Scan Sonar (SSS) module for UnderWater Simulator (UWSim) [1], specifically focusing on sonar image simulation. To obtain simulated SSS images, adopted Lambertian diffusion model [2]. The beam profile was modeled using a pair of sine wave functions. We developed in UWSim which runs Robot Operating System (ROS) framework. For validation, applied feature matching to obtained and examined inliers performance.
Recently, ternary transition metal chalcogenides Ta2X3Se8 (X = Pd or Pt) have attracted great interest as a class of emerging one-dimensional (1D) van der Waals (vdW) materials. In particular, Ta2Pd3Se8 has been actively studied owing to its excellent charge transport properties an n-type semiconductor and ultralong ballistic phonon properties. Compared subsequent studies on the Pd-containing material, Ta2Pt3Se8, another member this materials considerably less explored despite promising...
Abstract Background Low-pass whole-genome sequencing (LP-WGS)–based circulating tumor DNA (ctDNA) analysis is a versatile tool for somatic copy number aberration (CNA) detection, and this study aims to explore its clinical implication in breast cancer. Methods We analyzed LP-WGS ctDNA data from 207 metastatic cancer (MBC) patients prognostic value of CNA burden validated it 465 stage II-III triple-negative (TNBC) who received neoadjuvant chemotherapy phase III PEARLY trial (NCT02441933). The...
Low-power ambient backscatter communication (AmBC) relying on radio-frequency (RF) energy harvesting is an energy-efficient solution for batteryless Internet of Things (IoT). However, signals are severely faded by dyadic channel (DBC), limiting connectivity in conventional orthogonal time-division-based AmBC (TD-AmBC). In order to support massive AmBC, we propose sparse-coded (SC-AmBC) based non-orthogonal signaling. Sparse code utilizes inherent sparsity where power supplies RF tags rely...
In artificial tactile sensing, to emulate the human sense of touch, independent perception shear force and pressure is important. Decoupling a challenging task for ensuring stable grasping manipulation both soft brittle objects. This study introduces deformable ion gel-based sensor that capable distinguishing from when pressurized applied in any direction. Recognition decoupled forces precise directions enabled by acquiring data at only two frequencies (20 Hz 10 kHz) based on...
Escherichia coli isolates were recovered from clinical specimens of equine patients admitted to the Texas A&M Veterinary Medical Teaching Hospital over a five-year period. Ceftiofur resistance was used as marker for potential extended-spectrum beta-lactamase (ESBL)-activity, and 48 ceftiofur-resistant E. isolates, 27.08% (n = 13) phenotypically ESBL-positive. Conventional PCR analysis followed by large-scalebla Finder multiplex detected ESBL genes, CTX-M-1 SHV, in seven out 13 isolates....
Ultrasound transducers, one of the most widely used sensors in era fourth Industrial Revolution, have been recognized and a variety industries including medical, automotive, robotics. In particular, recent research has focused on development multi-mode imaging systems that combine ultrasound optical to improve accuracy information acquisition. Unfortunately, its efficient combination severely limited due inherent opacity conventional transducers. These limitations cause off-axes between (US)...
Abstract Recently, the 1D ternary transition metal chalcogenide Nb 2 Pd 3 Se 8 has been reported as a promising channel material for field‐effect transistors (FETs) with high performance transport behavior. Its structural characteristic of weak van der Waals (vdW) forces between unit ribbons allows isolation quality nanowires from bulk crystal that are similar to typical layered 2D materials. This study reports on liquid phase exfoliation (LPE) vdW predict optimal solvent in terms total...