Materials Literature
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Light-emitting electrochemical cells (LECs) are the next generation of optoelectronic devices and commonly employ ionic transition metal complexes (iTMCs) or conjugated polymers as the light-emitting material. LECs typically consist of ionic species, which are fabricated in solution and utilize air-stable electrodes,…
Block copolymer blends have the ability to build various self-assembled nanostructures. We have studied several polymer blend systems for membrane application. A thin film of block copolymer and cyclodextrin- based polymer was prepared as active layer coating for alumina membrane. This layer was prepared by layer-by-l…
We fabricated six different element (CeO2, SeO2, CuO, Fe2O3, MnO2, and ZnO) decorated silica nanoparticles (SiO2 NPs) with controlled physical properties. We provide better understanding of comparative cytotoxicity research by various element-decorated nanoparticles with the uniform size, shape and surface element amo…
Metal-organic frameworks (MOFs), a type of porous hybrid organicinorganic microporous materials, are typically characterized by high surface areas, uniform and nanostructured cavities and exceptional adsorptive capacities. These characteristics make them promising for application in catalysts and adsorbents materials.…
Recently, researches on application of the cellulose nanofiber (CNF) have been attracted an interest in various fields because of its remarkable properties such as biodegradable, low density, low shrinkage-swelling. CNF was prepared as aqueous suspension with low solid content, and the nanoscopitc morphology of CNFs c…
This study demonstrates that a new method to align and control spatial organization of bioactive hydrogel into micro-channels of a poly(vinylidene fluoride) membrane and guide growth direction and spacing of living cells. This integrated bioactive hydrogel system was prepared by fabricating a micro-channeled PVDF memb…
The process of TEMPO-mediated oxidation was applied that the preparation of carboxyl-functionalized cellulose nanofibrils. TEMPO-oxidized cellulose nanofibrils (TOCNs) measuring 4 to 10 nm in width and several micron in length (aspect ratio is over 100) have been prepared from commercial wood pulp. It was found that t…
Recently, perovskite solar cell is considered as one of the most efficient photovoltaic cell because of their high efficiency and long-term stability. In this paper, we show the influence of scaffold layer composed of size-controlled SiO2 nanoparticles (NPs) on perovskite solar cells. The infiltration of perovskite in…
The penetration range of energetic electrons into diverse materials can be modeled approximately with a simple fit. This fit is a function of a single parameter, Nv, which describes the effective number of valence electrons. Using the Continuous-Slow-Down-Approximation (CSDA) for energy deposition in a material, a com…
Organic photovoltaic cells(OPVs) have attracted much attention due to its potential applications such as low cost, low weight, and capability to be fabricated into flexible large area devices by solution process. Bulk heterojunction(BHJ) organic photovoltaic formed from a blend of π-conjugated polymeric electron-donor…
Although silicon carbide (SiC) is a material of excellent acid resistance, the reaction bonded SiC needs an additional protection to withstand the severe condition of semiconductor washing step, in which HF/H2O2 or H2SO4 is used at higher temperature for a long period of time. The coating materials containing fluorina…
The cerium-nickel loaded on titanium nanofibers were fabricated by simple electrospinning technique for hydrogen production. The catalytic activity of derived composite oxides after calcinations was studied at different parametric conditions. The prepared nanofibers were characterized by the SEM, EDX, FTIR, XRD, BET a…
Herein we demonstrated irradiation of electron beam with various dose levels to improve reactivity of electrode materials. The collected nanofibers were firstly stabilized in air for 1 hr, and then carbonized for 1 hr in Ar to achieve MnOx/CNF mats. After then showing the highest results mats were subjected to electro…
Organic/inorganic composite membranes of sulfonated poly(phenylene oxide) (SPPO) and hollow glass microspheres (HGMs) were prepared and investigated. The SPPO is introduced onto the surfaces of HGMs to increase interfacial adhesion between the HGM and the SPPO matrix. Then the SPPO composite membranes were crosslinked…
Das Ziel dieser Arbeit ist neben der Synthese von Sol-Gel-Funktionsschichten auf der Basis von transparent leitfahigen Oxiden (transparent conducting oxides, TCOs) die umfassende infrarotoptische und elektrische Charakterisierung sowie Modellierung dieser Schichten. Es wurden sowohl uber klassische Sol-Gel-Prozesse al…
19. Ulusal Mekanik Kongresi
액정디스플레이는 액체와 같은 유동성을 갖고 분자의 배열이 결정과 같이 규칙성을 갖는 물질인 액정을 이용한 디스플레이로서 외부 전계에 따라 액정층을 통과하는 빛의 양 및 빛의 설질을 변화하여 디스플레이에 사용하고 있다. 일반적으로 액정디스플레이는 비자발광 소자이기 때문에 백라이트라는 광원이 필요하지만 투명액정디스플레이는 백라이트를 대신하여 태양광과 같은 자연광 및 실생활 속에서 얻을 수 있는 조명을 백라이트로 이용하고 추가적으로 편광판 대신 염료를 사용하여 투과도를 증가시켰다. 액정분자의 배향에 따라 TN(Twisted Nematic)mode와 VA(Vertical…
While commercial polystyrene-based anion exchange membranes (AEMs) have simple manufacturing processes, they also possess the poor durability due to their brittleness. Poly(ethylene glycol)methyl ether methacrylate(PEGMA) with hydrophilic side chain of poly (ethylene glycol)(PEG) was used as a co-monomer to make the m…
Metal magnetic memory (MMM) method is a novel, passive magnetic method for inspecting mechanical degradation of ferromagnetic components. In this paper, the correlation between large deformation and the deformation-induced magnetic field was experimentally investigated for the X80 steel. Various tensile plastic deform…
Two low-band-gap conjugated polymers were designed and synthesized with alternating difluorinated quinoxaline(DFQx) or monofluorinated quinoxaline(FQx) as an electron-deficient unit and alkoxyl substituted benzo[1,2-b:4,5-b']dithiophene (BDT) as an electron-rich unit. The weight-averaged molecular of PBDT-DFQx and PBD…