A5100696054- Polymer Nanocomposite Synthesis and Irradiation
- Diamond and Carbon-based Materials Research
- Drug Solubulity and Delivery Systems
- Synthesis and properties of polymers
- 2D Materials and Applications
- Advanced Polymer Synthesis and Characterization
- Copper Interconnects and Reliability
- Graphene research and applications
- Advancements in Photolithography Techniques
- Photochromic and Fluorescence Chemistry
- Advanced Drug Delivery Systems
- Anaerobic Digestion and Biogas Production
- Protein purification and stability
- Innovation Policy and R&D
- Surfactants and Colloidal Systems
- Psychological Well-being and Life Satisfaction
- Aging and Gerontology Research
- Additive Manufacturing and 3D Printing Technologies
- Supramolecular Self-Assembly in Materials
- Monetary Policy and Economic Impact
- Innovation Diffusion and Forecasting
- Advanced Thermoelectric Materials and Devices
- Crystallization and Solubility Studies
- Metal and Thin Film Mechanics
- International Development and Aid
Samsung (South Korea)
2022
Hanyang University
2001-2022
Pusan National University
2015-2022
Sungkyunkwan University
2011-2021
Yonsei University
2011-2021
Chung-Ang University
2021
Kangbuk Samsung Hospital
2021
Ulsan National Institute of Science and Technology
2020
Korea International Cooperation Agency
2020
Korea Institute of Science and Technology
2002-2019
Abstract A number of 2D materials have been developed that properties different from bulk due to the quantum confinement effect. These can also form a vertical van der Waals heterojunction at large interface with other materials, resulting in unique electronic and thermoelectric properties. However, it is difficult fabricate heterostructure provide sufficient temperature gradient while forming carrier paths across heterojunction. Here, network structure constructed highly conductive...
Transition metal dichalcogenides (TMDs), due to their fascinating properties, have emerged as potential next-generation semiconducting nanomaterials across diverse fields of applications. When combined with other material systems, precise control the intrinsic properties TMDs plays a vital role in maximizing performance. Defect-induced atomic doping through introduction chalcogen vacancy into lattices is known be promising strategy for modulating characteristic properties. As result, there...
Hydrogen-bond networks with adjacent molecules were formed to provide a developed material, which has self-standing solid-like characteristics enabling its implementation in 3D continuous-filament printing.
A major task ahead for South Korea is to create age-friendly communities and environments that can support older residents' health, well-being, quality of life. To end, international partnerships have emerged share information, assess need, develop response strategies. In this study, the transferability a US-developed community resident survey, based on WHO framework, was tested in two Korean cities by comparing results same survey conducted US city. Descriptive, relational, predictive...
We propose a novel growth technique, in which graphene is synthesized on capped Cu thin films deposited c-plane sapphire. The cap another sapphire plate just laid upon the film, direct contact with it. Thanks to this 'contact cap', evaporation can be suppressed at high temperature and 400 nm-thick annealed above 1000 °C, resulting (1 1 1)-oriented grains of millimeter size. Following annealing, grown by chemical vapor deposition during same pump-down operation, without removing cap....
Abstract The surfaces of poly(styrene‐ co ‐acrylic acid) copolymers and their Na‐ Cs‐neutralized ionomers were modified by O 2 ‐plasma source ion implantation (PSII) treatment to improve the surface wettability. changes in wettability, composition, structure upon PSII examined with contact‐angle measurements X‐ray photoelectron spectroscopy. untreated acid exhibited different energies; this implied clearly that type species affects hydrophilicity. Also, induced oxygen‐containing groups...
Direct photopatternable and highly cross-linked organosiloxane-based organic–inorganic hybrid materials (Lt-passimer) were synthesized using a sol–gel reaction of phenyltrimethoxysilane tetraethyl orthosilicate as low dielectric constant passivation layer for thin film transistor (TFT) liquid crystal displays (LCDs). Addition hexa(methoxymethyl)melamine into the material resin minimizes polar silanol group in Lt-passimer by enhancing cross-linking improves thermal stability. The siloxane...
Abstract The present work deals with two different surface modification techniques for altering the properties of polymers: plasma treatment and ion implantation. Polymer foils were exposed in an inductively-coupled r.f. (13.56 MHz) system without applying a negative high voltage pulse to sample stage. influence low pressure plasmas oxygen, nitrogen, or argon on chemical composition, topography, wettability polymer surfaces was studied detail. Etch rates poly(ethylene terephthalate)...
The study of waste activated sludge (WAS) solubilization has been increased for volume reduction and enhancing the efficiency anaerobic digestion.Microwave (MW)-assisted is an effective method WAS because this can lead to thermal, nonthermal effect ionic conduction by dielectric heating.In study, MW heating conductive (CH) was compared enhance MW-assisted at low output power, chemical agents were applied such as H2SO4 strong acid CaCl2, NaCl materials.Compared COD CH, that approximately 1.4,...
No country can be free of global warming and incremental natural disasters. This is true especially developing countries, which are the most vulnerable to climate change. Although developed countries agreed mobilize USD 100 billion per year support by 2020, Organization for Economic Cooperation Development (OECD) has transferred only about 58.5 billion, on average over 2015 2018, countries. Korea, one OECD’s Assistance Committee (DAC) members, a considerable gap between its contribution...
Artificial Retinas In article number 2105596, Cheolmin Park and co-workers demonstrate artificially intelligent photonic synapses by utilizing position-dependent density tunable photoreceptive perovskite nanoscale cones templated in a self-assembled block copolymer nanostructure. The emulate the human retina with spatial distribution of cones, they recognize various visual information high degree accuracy.
This paper describes strong galvanic corrosion effect of Co liner on atomic layer deposition (ALD) TaN barrier during Cu CMP. Compared to physical vapor (PVD) TaN, ALD was more easily corroded resulting in void defects. We investigated characteristic differences between and PVD identified the root cause formation is higher nitrogen content film. could minimize voids by reinforcing plasma treatments after deposition.
Nimodipine is a highly lipophilic calcium channel blocker presenting extremely low aqueous solubility.This study aimed to develop solid self-microemulsifying tablets (SSMETs) that can considerably increase the apparent solubility and dissolution of nimodipine.For selection proper components liquid state formulations (LSMEFs), nimodipine emulsification capability were evaluated.Based on these two factors, Capryol™ 90, Cremophor ® EL, polyethylene glycol 400 (PEG 400) chosen as oil,...
The relationship between the exchange rate and real GDP of Hong Kong in long period from 1955 to 2015 is investigated using a structural VAR model. mutual effect two variables studied three periods: results indicate that there no obvious before Kong’s economy booming. However, significant positive correlation found sample 1975–1998, which associated with output increases. direction becomes negative after 1998. In addition, based on Granger causality test, we could causes 1975, but connection 1975.
본 연구는 사회복지 종사자 처우 개념의 협의성이 논의의 범위를 제한하고 있다는 문제의식 하에, UNECE(2015)가 제시한 일자리 질의 개념체계를 기반으로 종사자를 위한 처우를 재개념화하였다. 먼저, 종사자의 처우의 개념, 전개과정과 현황에 대해 고찰하였다. 또한 처우에 대한 국내 선행연구 검토를 통하여 하위구성요소가 어떻게 정의되어 왔는지 살펴보았다. 정부, 사회복지사협회, 민간단체 등의 논의는 주로 임금과 노동시간에 집중되어 있었고, 선행연구는 임금, 노동시간과 함께 심리적 요소들에 있었다. 그 외 노동환경의 질을 높이는 다양한 요소들은 의제형성에서 배제되어 이러한 협의적 또는 분절적 한계를 지적하며, 7가지 개념체계 -1) 고용의 안전성과 윤리성, 2) 복지혜택, 3) 노동시간 및 일과 삶의 균형, 4) 안정성과 사회보장, 5) 사회적 대화, 6) 교육훈련, 7) 직장 내 인간관계와 직무 동기- 에 따라 확장 차원에서 일자리의 질에 대하여 결론에서는 질 개념체계의...
The flow through random cellular structures can lead to efficient mixing increase system efficiency.Especially, the adsorption process filtration is greatly influenced by physical shape of [1].In this paper, mass transfer due structural complexity in metal foam structure evaluated VOCs removal rate measurement.VOCs refer liquids or gases containing organic carbon, and generally have a characteristic being pollutant that diffuses very quickly.Most are often generated from small nonpoint...