A5101701221- Gold and Silver Nanoparticles Synthesis and Applications
- Conducting polymers and applications
- CCD and CMOS Imaging Sensors
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Thin-Film Transistor Technologies
- Photonic Crystals and Applications
- Molecular Junctions and Nanostructures
- Laser Material Processing Techniques
- Supercapacitor Materials and Fabrication
- Graphene and Nanomaterials Applications
- Nonlinear Optical Materials Studies
- Advanced Battery Materials and Technologies
- Laser-Ablation Synthesis of Nanoparticles
- Extracellular vesicles in disease
- Infection Control and Ventilation
- Engineering Applied Research
- Material Properties and Processing
- Advanced Optical Sensing Technologies
- Analytical Chemistry and Sensors
- Advanced Fluorescence Microscopy Techniques
- Aerosol Filtration and Electrostatic Precipitation
- X-ray Diffraction in Crystallography
- Surface Modification and Superhydrophobicity
Samsung (South Korea)
2008-2024
SUNY Korea
2022-2024
Korea Advanced Institute of Science and Technology
2020-2024
State University of New York
2022
Pusan National University
2018
Chungnam National University
2014
Waseda University
2006-2009
Tokyo University of Agriculture and Technology
2003-2004
Chungbuk National University
2001-2004
Abstract Nanosecond laser patterning of Copper Metal–Organic Framework (Cu‐MOF) coated substrates is performed to fabricate non‐enzymatic glucose sensing electrodes. The Cu‐MOF glass substrate with a cover subjected process; the amount MOF, fluence, and scan speeds mainly influenced process. electrodes are fabricated on covered varying electrical conductivity due high energy absorptivity. patterned consist graphitic carbon incorporated nano‐Cu show stable substrates. chemically active in Fe...
According to the trend towards high-resolution CMOS image sensors, pixel sizes are continuously shrinking, and below 1.0μm, now reaching a technological limit meet required SNR performance [1-2]. at low-light conditions, which is key metric, determined by sensitivity crosstalk in pixels. To improve sensitivity, technology has migrated from frontside illumination (FSI) backside illumiation (BSI) as size shrinks down. In BSI technology, it very difficult further increase of near-1.0μm because...
As the smart mobile device market continues to grow and number of cameras per rapidly increases, demand for CMOS image sensors (CIS) also increases. Two major trends in are: (1) adopting smaller pixels that enable greater pixel count at similar optical format, (2) bigger higher quality. To be more specific, front-facing have a trend towards pixels, while rear main both pixels. The format is especially limited due existing bezel-less or border-less display designs, yet resolution still-shot...
Abstract As silver nanowires (Ag NWs) are usually manufactured by chemical synthesis, a patterning process is needed to use them as functional devices. Pulsed laser ablation promising Ag NW because it simple and inexpensive procedure. However, this has disadvantage in that target materials wasted owing the subtractive nature of involving removal unnecessary materials, large quantities raw required. In study, we report minimum-waste utilizing nanoparticle NP) debris obtained through NWs...
Plasmonic color printing has received significant attention owing to its advantages such as nonfading and nontoxic expression, without necessitating the use of chemical dyes. Recently, generation from laser-induced plasmonic nanostructures been extensively explored because simplicity, cost-effectiveness, large-scale processability. However, these methods usually utilize a top-down method that causes unexpected background colors. Here, we proposed novel via bottom-up type photomodification...
Abstract Laser patterning to fabricate micro/nanoscale structures attracts enormous attention as they find many functional applications owing their controllable structure and unique properties. The present work proposes a solution‐based method laser‐induced periodic surface (LIPSS) patterns on thin film of Titanium (IV) butoxide Ag organometallic (OM) solution‐coated glass substrates with near infra‐red (NIR) nanosecond (ns) laser. formation has been confirmed, the solution concentration...
Designing uniform plasmonic surfaces in a large area is highly recommended for surface-enhanced Raman scattering (SERS). As periodic morphologies exhibit SERS and optical tunability, diverse fabrication methods of nanostructures have been reported applications. Laser interference lithography (LIL) one the most versatile tools since it can rapidly fabricate patterns without usage photomasks. Here, we explore complex spatially sensors its cost-effective method termed multi-exposure laser...
CMOS image sensors (CISs) with deep-submicron pixels are now in high demand, as high-end mobile devices equipped multiple camera modules that used for ultra-high-resolution imaging [1], [2]. The biggest challenges small to maintain dynamic range (DR), signal-to-noise ratio (SNR), and sensitivity compatible a sensor larger pixels. A back-illuminated stacked front deep-trench isolation (FDTI) shallow-trench (STI) inter-pixel inter-node respectively appears promising continuous pixel-size...
Abstract Early diagnostics of breast cancer is crucial to reduce the risk metastasis and late relapse. Exosome, which contains distinct information its origin, can be target object as a liquid biopsy. However, low sensitivity inadequate diagnostic tools interfere with point-of-care testing (POCT) exosome. Recently, Surface-enhanced Raman spectroscopy (SERS), enables detection scattering, has been proved promising tool for exosome but fabrication process SERS probe or substrate still...
Abstract Early diagnostics of breast cancer is crucial to reduce the risk metastasis and late relapse. Exosome, which contains distinct information its origin, can be target object as a liquid biopsy. However, low sensitivity inadequate diagnostic tools interfere with point‐of‐care testing (POCT) exosome. Recently, Surface‐enhanced Raman Scattering (SERS) spectroscopy, amplifies scattering, has been proved promising tool for exosome detection. fabrication process SERS probe or substrate...
The analysis of circulating tumor cells (CTCs) in the peripheral blood cancer patients is critical clinical research for further investigation progression and metastasis. In this study, we present a novel surface-enhanced Raman scattering (SERS) substrate efficient capture characterization using silver nanoparticles-reduced graphene oxide (AgNPs-rGO) composites. A pulsed laser reduction nanowire-graphene (AgNW-GO) mixture films induces hot-spot formations among AgNPs artificial biointerfaces...
Ag nanoparticles were added to 2,5-dimercapto-1,3,4-thiadiazole (DMcT)-polyaniline (PAn) composites improve charge-discharge performance of the as a cathode material for lithium rechargeable batteries. The effect addition DMcT-PAn composite film was investigated. Adding nanoparticles, containing showed enhanced current density compared without nanoparticles. acts conductive and catalytic material. UV/vis spectroscopic analysis suggested strong interactions between DMcT while only weak PAn...
Metal microhoneycomb structures have received considerable attention as a type of interaction-efficient functional devices owing to their unique morphology and material properties. Microhoneycomb are mainly fabricated using the well-known breath-figure method. However, additional post-treatments required produce metal structure because it is polymer-based process, this necessitates expensive, complex, multi-step fabrication processes. Therefore, simple, low-cost honeycomb process necessary....
Acoustofluidic cancer cell lysis and particle mixing facilitate Raman spectrum profiling.
A lot of researches have been made on how to know the position mobile robot when it knows initial robot. For be completely unmanned, also needs find out its own position. To do this, is necessary obtain enough data estimate without previous data. In Simultaneous Localization and Mapping (SLAM), Light Detection Ranging (LiDAR) often used accurate map for this case, difficult because there little information at start-up. On other hand, stereo camera has advantage that can acquire more than...
In this paper, the travel control of spherical wheeled robot with a mecanum wheel is impelemented. Four typical wheels or three omni are used to consist ball-bot. slip occured when order reduce these slip, macanum proposed. Through some experiments, we find that proposed superior conventional wheels.
Nano-crystalline diamond (NCD) coating to improve the performance of cutting tools, as thickness varies, and lifespan tool varies because radius its edge surface roughness are altered. Therefore, an in-depth analysis on impact variations in abrasion quality machined is necessary. In this study, two NCD ball endmills were coated with 8 12 μm thicknesses, plane observed after milling. Furthermore, morphology abrased using a 3D confocal microscope. Consequently, we that individual nodules...
As pixel sizes continue to scale down, backside-illuminated (BSI) technology has been recently adopted as a solution improve SNR performance. In addition, the application of image sensors widens from digital still cameras camcorders, high-resolution and high-speed operation are required. This paper presents 1/2.33-inch 14.6Mpixel CMOS sensor employing 1.4μm BSI architecture with floating-diffusion (FD) boosting scheme that enables high speed read-out.