Materials Literature
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Nitrile–butadiene rubbers (NBRs) with different acrylonitrile (AN) contents were used to toughen acrylonitrile–styrene–acrylic terpolymer/styrene–acrylonitrile copolymer (ASA/SAN) blends. The properties of the ASA/SAN/NBR ternary blends were investigated via dynamic mechanical analysis, heat distortion temperature, Fo…
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A nanoporous TiO2 electrode was modified with magnesium salts (MSs), MgCO3 and Mg(CH3COO)2, by simple dip coating process at varied temperatures, and then applied to dye-sensitized solar cells (DSSCs). When the surface treatment was conducted at 40 °C, the DSSC with MS-modified TiO2 layer showed an increase in short c…
Colloidal particles trapped at an interface between two fluids can form a wide range of different structures. Replacing one of the fluid with a liquid crystal (LC) increases the complexity of interactions and results in a greater range of possible structures. New behaviour emerges when colloidal particles interact wit…
380 nm Ultraviolet (UV) light emitting diodes (LEDs) were grown on patterned n-type GaN substrate (PNS). Wet etched self-assembled indium tin oxide (ITO) nano clusters serves as dry etching mask for converting the SiO2 layer grown on n-GaN template into SiO2 nano dots by inductively coupled plasma etching. In the pre-…
We show that the interface between gold and thermally formed cuprous oxide, which emits terahertz radiation when illuminated with ultrafast femtosecond lasers, is in fact an AuCu/Cu₂O interface due to the formation of the thermal diffusion alloy AuCu. The alloy enables the formation of a Schottky-barrier-like electric…
It is well known that a phase transition from liquid to vapor occurs in the thermal boundary layer adjacent to a nanoparticle that has a high temperature upon irradiation with a high-power laser. In this study, the mechanism by which the evaporated layer adjacent to a laser-irradiated nanoparticle can grow as a bubble…
ZnO(Fe)/ZnO multilayers (MLs) with Fe 6.5% (Fe-doped sample) and ZnO(FeNi)/ZnO MLs with Fe22Ni78 6.5% (Ni-doped sample) prepared by helicon plasma sputtering were investigated. Structures of as-prepared Fe- and Ni-doped samples show the layer structures and the ZnO crystalline structures. However, the samples annealed…
E-mail: thyeon@snu.ac.krReceived October 11, 2013, Accepted November 8, 2013Key Words : Silver nanoparticle, Ultrasmall nanoparticle, MALDI-TOF, Mass spectrometryUltrasmall nanoparticles have recently been the subject ofa plethora of research owing to the unique physical andchemical properties manifest in the particle…
InGaN light-emitting diodes with band-pass-filter-like GaN : Si nanoporous structures, Huang, Kun-Pin, Wu, Kaun-Chun, Cheng, Po-Fu, Tseng, Wang-Po, Shieh, Bing-Cheng, Lin, Chia-Feng, Leung, Benjamin, Han, Jung
We have synthesized an anthracene-based conjugated polymer, poly[(9,10-bis(oct-1-ynyl)anthracene)-alt-(5,6-bis(octyloxy)-4,7-bis(thiophen-2-yl)benzo-[c][1,2,5]-thiadiazole)] (PANTBT), for application in organic photovoltaic devices. It exhibited a number average molecular weight of 14,300 g/mol and was fairly soluble…
Bio-blend films were prepared with sago starch and N-vinyl-2-pyrrolidone (NVP) by the casting method, varying the concentrations of sago starch (100 to 93%) and NVP (0 to 7%). The formulations were designated as F1 (starch 100%), F2 (starch 97%), F3 (starch 95%), and F4 (starch 97%). The highest tensile strength (TS),…
We apply kinetic Monte Carlo simulations to study the catalytic oxidation of CO on a surface in the presence of contaminants in the gas phase. The dynamic behavior of the process is simulated by models based on the Ziff-Gulari-Barshad model (ZGB). We analyze three ways in which the entrance mechani sm of the oxygen at…
The recent years have witnessed discovery of graphene and related robust research on this new type of two-dimensional carbon nanomaterials. Due to its unique two-dimensional structure and excellent properties, graphene has become a hot topic for materials scientists worldwide. Combined with the authors' related work,…
No AccessPolymer ExtrusionApr 2014Twin Screw ExtrudersChris RauwendaalChris RauwendaalSearch for more papers by this authorhttps://doi.org/10.3139/9781569905395.010SectionsAboutPDF ToolsAdd to FavoritesDownload CitationTrack CitationsCopy LTI LinkPDF key 'share (en)' returned an object instead of string.FacebookTwitte…
The combination of ionic liquids (ILs) and supercritical CO2 (scCO2) allows efficient catalytic processes to be developed. Catalyst separation is generally a major challenge when enzymes or homogeneous organometallic catalysts are utilised for reactions, and IL–scCO2 systems address these separation problems, facilita…
The new asymmetric semiconductor 5-(6-decylnaphthalen-2-yl)-5'-(naphthalene-2-yl)-2,2'-bithiophene (NBTND) was synthesized by Suzuki coupling reaction for an organic thin film transistor (OTFT) material. This asymmetric molecule was characterized by H-NMR, IR, HRMS, UV-visible spectroscopy, cyclovoltammetry, thermogra…
Composite bone cement composed of tricalcium silicate (Ca3SiO5, C3S), hydroxyapatite particle (nano-HAp) and collagen was prepared and investigated in this study. We synthesized C3S through a solid-state reaction and modified it by adding zinc oxide (ZnO) in order to stabilize the C3S phase during preparation. In orde…
A series of silafluorene-based copolymers, poly[9-(2-ethylhexyl)-9-dodecyl-silafluorene-2,7-diyl-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (P1), poly[9-(2-ethylhexyl)-9-dodecyl-silafluorene-2,7-diyl-alt-2,5-bis-(thiophene-2-yl)thiazolo [5,4-d]thiazole] (P2), and poly[9-(2-ethylhexyl)-9-dodecyl-silafluore…
A hydrothermal method was explored to synthesize single-crystalline (sc) rutile TiO2 nanorods (NRs) with a thickness ranging from 2.4 μm to 6.4 μm on a transparent conductive fluorine-doped tin oxide (FTO) substrate. The variation of precursor ratios in the synthesis solution modulates the length of sc-TiO2 NRs. That…