A5100638674- Advanced Sensor and Energy Harvesting Materials
- Nanomaterials and Printing Technologies
- Engineering Applied Research
- Manufacturing Process and Optimization
- Organic Light-Emitting Diodes Research
- Analog and Mixed-Signal Circuit Design
- ZnO doping and properties
- Particle accelerators and beam dynamics
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Advanced Surface Polishing Techniques
- Tactile and Sensory Interactions
- Industrial Vision Systems and Defect Detection
- Iterative Learning Control Systems
- Robot Manipulation and Learning
- Advancements in PLL and VCO Technologies
- Melamine detection and toxicity
- Vascular Procedures and Complications
- Magnetic confinement fusion research
- Central Venous Catheters and Hemodialysis
- Scheduling and Optimization Algorithms
- Robotic Mechanisms and Dynamics
- DNA and Nucleic Acid Chemistry
- Green IT and Sustainability
- Industrial Automation and Control Systems
Korea Institute of Science and Technology
2018-2022
Agency for Defense Development
2000-2022
Massachusetts Institute of Technology
2020-2021
Sungkyunkwan University
2011-2020
Korea Atomic Energy Research Institute
2017-2019
Korea Institute of Materials Science
2018
Gwangju Institute of Science and Technology
2018
Seoul National University
2012-2017
Suwon Research Institute
2014-2017
Government of the Republic of Korea
2017
We report on an all-solution-processed fabrication of highly efficient green quantum dot-light-emitting diodes (QLEDs) with inverted architecture, where interfacial polymeric surface modifier polyethylenimine ethoxylated (PEIE) is inserted between a dot (QD) emitting layer (EML) and hole transport (HTL), MoOx injection solution deposited top the HTL. Among QLEDs varied PEIE thicknesses, device optimal thickness 15.5 nm shows record maximum efficiency values 65.3 cd/A in current 15.6%...
Abstract The development of electrically responsive sensors that interact directly with human skin and at the same time produce a visual indication temperature is in great demand. Here, we report highly sensitive electronic (E‐skin) sensor measures visualizes simultaneously using biocompatible hydrogel displaying thermoresponsive transparency resistivity resulting from dependence strength hydrogen bonding between its components. This (TRH) showed not only proton conductivity but also...
Abstract Sensory neurons generate spike patterns upon receiving external stimuli and encode key information to the patterns, enabling energy-efficient processing. Herein, we report an epifluidic electronic patch with spiking sweat clearance using a sensor containing vertical sweat-collecting channel for event-driven, energy-efficient, long-term wireless monitoring of epidermal perspiration dynamics. Our contains nanomesh electrodes on its inner wall unique sweat-clearing structures. During...
In this study, the utilization of a dry film photoresist (DFR) was explored for fabricating patterned insulating layer in Ag nanowire (AgNW) bottom electrodes with various designs flexible organic light-emitting diodes (OLEDs). With single hot-pressing step, pre-patterned DFR insulator attached onto AgNW electrodes, thus forming insulated desired patterns. same AgNWs were also embedded into poly(methyl methacrylate), which sufficiently reduced root mean square (RMS) roughness (~5 nm) use...
Abstract With increasingly diverse functionalities of electronic skins (E‐skins), components and structures for the E‐skin have also become more complex. It is extremely challenging to make all devices required additional stretchable breathable ensure skin comfort. Herein, we report a facile strategy realize versatile hybrid patch with great comfort by developing metastructure serve as platform material patch. A Kagome‐based mechanical made breathable, medical adhesive integrates tethers...
The Ag nanowire and CNT networks are patterned with a pattern width up to 30 μm by using dry film photo resists (DFRs). systematic characterization of the electrical mechanical properties revealed dependent property changes.
Patchable electrodes are attractive for applications in optoelectronic devices because of their easy and reliable processability. However, development patchable transparent (TEs) with high performance is challenging; till now, fabricated TEs have been exhibiting limited performance. In this study, Ag nanowire (AgNW)/poly(methyl methacrylate) (PMMA) developed the highly efficient quantum dot light-emitting diodes (QLEDs) using fabricated. AgNWs optimized properties (figure merit ≈ 3.3 × 10-2)...
This study proposes a simple method of Au coating on silver nanowires (Ag NWs) transparent conductive films as the anode organic light emitting diodes (OLED) to increase work function film and thus enhance hole transport. We carefully engineer process conditions (pretreatment, solution concentrations, number) using diluted HAuCl4 Ag NWs minimize etching damage accompanying galvanic replacement reaction. Ultraviolet photoelectron spectroscopy Kelvin probe force microscopy show upon coating....
Introduction A radiocephalic arteriovenous fistula (AVF) is the best choice for achieving vascular access (VA) hemodialysis, but this AVF has high rates of early failure due to juxta-anastomotic stenosis, making it impossible use dialysis. Low hemodynamic shear stress contributes pathophysiology VA secondary thrombosis, and re-occlusion after percutaneous intervention. Methods We used a computational fluid dynamics (CFDs) approach evaluate distribution minimize its effects under various...
Cu2+-modified DNA nanostructures are investigated using differently sized rings that composed of core and extension motifs. Chemical reduction current measurements adopted for verifying Cu2+ modification, the results provide clear evidence co-ordination in structures.
This study examines the effects of doping ZnO nanowires (NWs) with Sn on growth morphology and electrical properties. NWs various contents (1–3 at.%) were synthesized using vapor–liquid–solid method. Scanning electron transmission microscopy analyses showed that all Sn-doped grew in a bamboo-like morphology, which stacking faults enriched periodically inserted. We fabricated hybrid film InZnO sol–gel NW networks to characterize properties NWs. With increasing density, carrier concentration...
Surface plasmon-enhanced spectroscopic sensors for fluorescence and Raman spectroscopy use high-density metallic nanostructures to strongly enhance the light–matter interaction. In this contribution, we will review processes by which three-dimensional (3D) multilayered Ag nanowires assemble from one-dimensional their sensing applications, giving emphasis physical mechanism underlying spectroscopy. particular, discuss practical aspects of 3D porous flexible plasmonic platforms used...
Most of the existing life test plans are concerned with tests conducted under continuous inspection items. However, a reduction in testing effort and administrative convenience may be achieved by employing intermittent which items inspected only at certain points time. The well-known hybrid plan, employs single censoring time, is frequently used practice. To investigate whether or not adding more inspections to plan improves its statistical performance substantially, multiple first developed...
본 연구는 간척지에서 여름철 대표 사료작물인 옥수수와 수수<TEX>${\times}$</TEX>수수 교잡종의 생산성 및 화학비료와 가축분뇨의 시용시 생산성을 비교하기 위하여 2008년은 화옹간척지에서 2009년은 석문간척지에서 시험을 실시하였다. 사료작물의 생산성은 옥수수가 교잡종보다 높았으며 사료가치도 높았다. 옥수수의 경우 화학비료에서 높은 수량을 보였으며 시험한 결과 SCB 액비구에서 높았고 석문간척지에서는 돈분액비구에서 보였다. 사료가치는 화학비료구와 가축분뇨 시용구에서 비슷한 결과를 나타냈다. 반면 생산성과 토양염류도와의 관계성은 보이지 않았다. 이상의 시험결과로 보아 대표사료작물인 재배가 가능하며 가축분뇨를 시용하여 가능하다고 판단되어지며 돈분액비와 액비의 새로운 비료로서 대체 가능성이 있으나 추가적인 연구가 필요할 것으로 판단되어진다. Until now, The experiment about the forage crop have been almost not...