A5100759794- Quantum Dots Synthesis And Properties
- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Advanced Photocatalysis Techniques
- Analog and Mixed-Signal Circuit Design
- Photonic Crystals and Applications
- CCD and CMOS Imaging Sensors
- TiO2 Photocatalysis and Solar Cells
- Mechanical Circulatory Support Devices
- Photoacoustic and Ultrasonic Imaging
- Nanoplatforms for cancer theranostics
- Electrohydrodynamics and Fluid Dynamics
- Chalcogenide Semiconductor Thin Films
- Transplantation: Methods and Outcomes
- Advanced Sensor and Energy Harvesting Materials
- Liquid Crystal Research Advancements
- Electrochemical Analysis and Applications
- Additive Manufacturing and 3D Printing Technologies
- Electronic and Structural Properties of Oxides
- 3D Printing in Biomedical Research
- Advancements in PLL and VCO Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Catalytic Processes in Materials Science
Pohang University of Science and Technology
2025
The University of Texas at Austin
2024
Korea Advanced Institute of Science and Technology
2024
Institute for Basic Science
2024
Indiana University – Purdue University Indianapolis
2023
Incheon National University
2023
Chungnam National University
2021
Korea Institute of Toxicology
2021
Seoul National University
2017
Yeungnam University
2012
Abstract The commercialization of metasurfaces is crucial for real‐world applications such as wearable sensors, pigment‐free color pixels, and augmented virtual reality devices. Nanoparticle‐embedded resin‐based nanoimprint lithography (PER‐NIL) has shown itself to be a low‐cost, high‐throughput manufacturing method enabling the replication high‐index nanostructures. It been extensively integrated into fabrication hologram metasurfaces, metalenses, sensors due its procedural simplicity. Most...
Optical resolution photoacoustic imaging of uneven samples without z-scanning is transformative for the fast analysis and diagnosis diseases. However, current approaches to elongate depth field (DOF) typically imply cumbersome postprocessing procedures, bulky optical element ensembles, or substantial excitation beam side lobes. Metasurface technology allows phase modulation light miniaturization systems wavelength-size thickness. Here, we propose a metalens composed submicrometer-thick...
Structured beams carrying orbital angular momentum carry significant potential for various applications, including optical trapping, manipulations, communications, microscopy, and so on. Among these, perfect vortex (PV) are highly attractive due to their immunity topological charge variations nondiffracting properties. However, conventional PV beam generation methods typically operate at a single wavelength rely on bulky components, complicating photonic device integration. To address this,...
Hot electrons are crucial for unraveling the intrinsic relationship between chemical reactions and charge transfer in heterogeneous catalysis. Significant research focused on real-time detection of reaction-driven hot electron flow (chemicurrent) to elucidate energy conversion mechanisms, but it remains elusive because carrier generation contributes only part entire process. Here, a theoretical model quantifying chemicurrent yield is presented by clarifying contributions losses from internal...
This paper presents a constant bandwidth switched-capacitor programmable-gain amplifier (SC-PGA). By using an adaptive Miller compensation technique for the SC-PGA, our SC-PGA achieves low power consumption and high linearity at various gain conditions. The post-layout simulation results with 0.18 μm CMOS process show that efficiency is tripled over without 12 V/V degrading performance. Power 2.8 mW 3.3 V analog 1.8 digital supply voltage.
Despite extensive research on utilizing plasmonic hot carriers to advance photovoltaics and photocatalysts, achieving high hot‐carrier flux remains challenging due their rapid relaxation. Recent studies have shown that combining metals with perovskites improves hot‐electron flow, the slow relaxation in perovskites. Additionally, offer advantage of facile bandgap tuning through composition changes. Herein, influence perovskite lifetime flow electrons a perovskite/plasmonic Au/TiO 2 nanodiode...
Although extensive research on the mechanisms of photoconductivity enhancement in plasmonic Schottky structures has been conducted, photoconductive interplay between hot electrons and trapping states remains elusive. In this study, we explored relationship hot-carriers defect sites present architectures consisting N-face n-GaN Au nanoprisms. Our experimental results clearly verified that hot-electrons generated by interband transitions preferentially occupied deep trap levels n-GaN, thereby...
For effectively photochemical hydrogen production, Ti ions (0.01, 0.10, 0.50 mol%) impregnated WO3 (Ti/WO3) nanometer sized particles were prepared using a impregnation method as photocatalyst. The characteristics of the synthesized Ti/WO3 photocatalysts analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectra (PL), atomic force microscope (AFM), and electrostatic (EFM). evolution H2 from methanol/ water (1/1) photo-splitting over was enhanced...
The pressure-driven liquid flow controller is one of the key components in diverse applications including microfluidic systems, biomedical drug injection devices, and pressurized water supply systems. Electric feedback loop based controllers are fine-tunable but expensive complex. conventional safety valves on spring force simple low cost, their application limited due to fixed pressure range, size, shape. Herein, we propose a controllable liquid-flowing system combining closed reservoir an...
A level-shifting low-pass filter is presented for integrated input interface of automotive microcontrollers. The captures battery-level inputs and attenuates high-frequency noise. By using DC-decoupled capacitance multiplication, our withstands large voltage spikes improves a cut-off frequency from 3 ㎒ to 10.5 ㎑ regardless the sensor output DCs, thus eliminating expensive external components. occupies 0.016 ㎟ per channel, which only 0.45% size interface. achieves 60.7 ㏈...