A5005780244- ZnO doping and properties
- Advancements in Battery Materials
- Nanowire Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Silicon Nanostructures and Photoluminescence
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Silicon and Solar Cell Technologies
- Semiconductor materials and interfaces
- Advanced Battery Materials and Technologies
- Layered Double Hydroxides Synthesis and Applications
- Semiconductor materials and devices
- Advanced battery technologies research
- Optical Coatings and Gratings
- Semiconductor Quantum Structures and Devices
- GaN-based semiconductor devices and materials
- Electrocatalysts for Energy Conversion
- Copper-based nanomaterials and applications
- Extraction and Separation Processes
- Microfluidic and Bio-sensing Technologies
- Nanopore and Nanochannel Transport Studies
- Advancements in Solid Oxide Fuel Cells
Seoul National University
1996-2024
Dankook University
2021-2024
Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWKS
2023-2024
Technical University of Darmstadt
2023-2024
Daegu Gyeongbuk Institute of Science and Technology
2012-2021
Sungkyunkwan University
2020
Government of the Republic of Korea
2017-2019
Daegu University
2015-2017
Galgotias University
2015
Korea Naval Academy
2012-2014
Enhanced output power from a ZnO nanorod (NR)-based piezoelectric nanogenerator (PNG) is demonstrated by forming heterojunction with Si micropillar (MP) array. The length of the SiMP array, which was fabricated electrochemical etching, increased systematically 5 to 20 μm controlling etching time. Our structural and optical investigations showed that NRs were grown hierarchically on SiMPs, their crystalline quality similar regardless underlying SiMPs. peak voltage NR-based PNG greatly ∼5.7...
The-state-of-the-art bio- and nanotechnology have opened up an avenue to noninvasive liquid biopsy for identifying diseases from biomolecules in bloodstream, especially DNA. In this work, we combined sequence-specific-labeling scheme using mutated clustered regularly interspaced short palindromic repeats associated protein 9 without endonuclease activity (CRISPR/dCas9) ion concentration polarization (ICP) phenomenon as a mechanism selectively preconcentrate targeted DNA molecules rapid...
The exponentially increasing demand for lithium‐ion batteries and their limited lifetime lead to a significant increase in spent batteries. With the goal address sustainability recyclability minimize negative effects environment, an efficient process is vital recover valuable materials from by recycling. In this regard, deep eutectic solvents (DESs) have attracted huge interest, due unique ability efficiently extract metals batteries, while also being rendered greener more cost‐effective...
Visible light-emitting Ce-doped ZnO nanorods [NRs] without a post thermal annealing process were grown by hydrothermal method on Si (100) substrate at low temperature of 90°C. The structural investigations NRs showed that the Ce3+ ions successfully incorporated into lattice sites forming unwanted Ce-related compounds or precipitates. optical investigation photoluminescence spectra shows doped in act as an efficient luminescence center 540 nm which corresponds to transition 5d → 4f orbitals...
Patterned WO<sub>3</sub> microdisc arrays exhibit excellent photoelectrochemical performances, owing to enhanced light absorption and effective charge separation.
We demonstrate the fabrication of a graphene/ZnO nanorod (NR) hybrid structure by mechanical exfoliation ZnO NRs grown on graphite substrate. confirmed existence graphene sheets analyzing Raman spectra and current–voltage (I–V) characteristics. The exfoliated NR show G 2D band peaks that are shifted to lower wavenumbers, indicating layer exists under significant amount strain. I–V characteristics current flow through layer, while no is observed NR/polydimethylsiloxane (PDMS) composite...
Abstract Highly sensitive and system integrable gas sensors play a significant role in industry daily life, MoS 2 has emerged as one of the most promising two-dimensional nanomaterials for sensor technology. In this study, we demonstrate scalable monolithically integrated active-matrix array based on large-area bilayer films synthesized via two-successive steps: radio-frequency magnetron sputtering thermal sulfurization. The fabricated thin-film transistors exhibit consistent electrical...
Abstract Ideally, once batteries reach their end‐of‐life, they are expected to be collected, dismantled, and converted into black mass (BM), which contains significant amounts of valuable metals. BM can regarded as a sort urban mine, where recyclers extract reintroduce the materials new battery manufacturing. Focusing on BM, this article discusses necessity recovery current recycling situations. Although benefits widely acknowledged, many challenges issues remain. The market is still in its...
The enhancement of phase separation in the InGaN layer grown on a GaN with rough surface was investigated for formation self-assembled In-rich quantum dots (QDs) layer. Transmission electron microscopy images showed that QDs size 2–5 nm were formed even an low indium content, and thickness less than critical thickness. room-temperature photoluminescence (PL) spectrum this emission peaks corresponding to QDs. temperature-dependent PL spectra dominant peak shifts lower energy side, indicating...