A5066261253- Advanced Sensor and Energy Harvesting Materials
- Fluid Dynamics and Thin Films
- Conducting polymers and applications
- Electrohydrodynamics and Fluid Dynamics
- Marine and coastal ecosystems
- Supercapacitor Materials and Fabrication
- Innovative Energy Harvesting Technologies
- Nanomaterials and Printing Technologies
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Ga2O3 and related materials
- Graphene research and applications
- Cooperative Communication and Network Coding
- Surface Modification and Superhydrophobicity
- IPv6, Mobility, Handover, Networks, Security
- Microfluidic and Bio-sensing Technologies
- ICT Impact and Policies
- Marine Bivalve and Aquaculture Studies
- Advanced Materials and Mechanics
- Fluid Dynamics and Heat Transfer
- 2D Materials and Applications
- Microbial Community Ecology and Physiology
- Nanofabrication and Lithography Techniques
Sungkyunkwan University
2018-2024
Government of the Republic of Korea
2020-2021
Suwon Research Institute
2021
Gwangju Institute of Science and Technology
2014
Pohang University of Science and Technology
2010-2013
In this work, a new approach to modifying poly(dimethylsiloxane) (PDMS) as negative triboelectric material using graphene oxide (GO) and sodium dodecyl sulfate (SDS) surfactant was reported. A porous PDMS@GO@SDS composite nanogenerator (TENG) could deliver an output voltage current of up 438 V 11 μA/cm2, respectively. These values were 3-fold higher than those the flat PDMS. The superior performance is attributed intensified charges on PDMS from oxygen functional groups GO anionic head SDS...
The development of an effective mechanical to electrical energy conversion device and its functional integration with storage for self-powered portable gadgets are cutting-edge research fields. However, the generated power stability these integrated devices still not efficient up electronics. We fabricated a rectifier-free piezoelectric nanogenerator (NG) supercapacitor (SC). A multifunctional composite matrix was prepared by incorporation ultrathin (<10 nm) ZnO nanoflakes reduced graphene...
A high output flexible triboelectric nanogenerator was successfully fabricated through a facile synthetic route which can achieve power density of 0.65 mW cm<sup>−2</sup>.
Abstract The East/Japan Sea (EJS) is a highly productive marginal sea in the northwest Pacific, consisting of three basins (Ulleung Basin: UB, Yamato YB, and Japan JB). To find causes reportedly high primary productivity summer EJS, especially we measured productivity, phytoplankton composition, other environmental variables. water column was strongly stratified EJS compared with Western Subarctic Pacific (WSP). Integrated two times higher (612 mg C m −2 d −1 ) than WSP (291 ). vertical...
Despite the prospects of electrohydrodynamic instability patterning (EHIP), poor process parameter controllability is a significant challenge in uniform large-scale nanopatterning. Herein, we introduce EHIP using an ultrahigh electric field (>108 V/m) to effectively accelerate pattern growth evolution. Owing strong dependence on temporal (1/τm) strength, our method not only reduces completion time but also overcomes critical parametric restrictions replication, thereby enhancing replicated...
The outcomes of the study plant surfaces, such as rice leaves or bamboo leaves, have led to extensive efforts being devoted fabricating anisotropic arrays micro/nanoscale features for exploring droplet spreading. Nonetheless, precise engineering density and continuity three-phase contact lines wetting remains a significant challenge without resorting chemical modifications costly procedures. In this work, we investigated secondary electrohydrodynamic instability in polymer films producing...
1/<italic>τ</italic><sub>m</sub>-dependent electrohydrodynamic replication of a hexagonally ordered hole array nanopattern by adjusting the filling ratio. As 1/<italic>τ</italic><sub>m</sub> increases, morphology evolves into perfectly replicated features with increasing
Photosynthetic pigments, nutrients, and hydrographic variables were examined in order to elucidate the spatio-temporal variation of water column structure its effect on phytoplankton community western channel Korea Strait fall 2006 spring 2007. High biomass was associated with high salinity, implying that nutrients not supplied by coastal waters or Yangtze-River Diluted (YRDW) low salinity. Expansion Bottom Cold Water (KSBCW) a cold eddy observed during season might enhance nutrient supply...
Abstract Nanopatterning driven by electrohydrodynamic (EHD) instability can aid in the resolution of drawbacks inherent conventional imprinting or other molding methods. This is because EHD force negates requirement physical contact and easily tuned. However, its potential has not examined owing to limited size pattern replica (several tens micrometers). Thus, this study proposes a new route for large‐area patterning through high‐speed evolution EHD‐driven growth along in‐plane axis. Through...
Electrohydrodynamic (EHD)-driven patterning is a pioneering lithographic technique capable of replicating and modifying micro/nanostructures efficiently. However, this process currently restricted to conventional substrates, as it necessitates uniform robust electric field over large area. Consequently, the use nontraditional such those that are flexible, nonflat, or have high insulation, has been notably limited. In our study, we extend applicability EHD-driven by introducing...
Global effort has resulted in tremendous progress with energy harvesters that extract mechanical from ambient sources, convert it to electrical energy, and use for systems such as wrist watches, mobile electronic devices, wireless sensor nodes, health monitoring, biosensors.However, harvesting a single source only still pauses great challenge driving sustainable maintenance-free monitoring sensing devices.Over the last few years, research on high-performance at micro nanoscale been directed...