Materials Literature
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Hysteresis effects of two blue-phase (BP) liquid crystals BP-I and BP-II, and polymer-stabilized BP-I and BP-II are investigated. BP-I exhibits a relatively slow response time and a large hysteresis. After polymer stabilization, its operating voltage is increased slightly, but its response time is dramatically reduced…
Simple model based on energy gap data, has been proposed for calculating the refractive index of different semiconductors, insulators, oxides and halides. The proposed model is applicable to the whole range of energy gap materials. The calculated values of refractive index are compared with the experimental values and…
Predicting the domain structures and properties in both bulk single crystal and thin film ferroelectrics using the phase-field approach requires the knowledge of fundamental mechanical, electrical, and electromechanical coupling properties of a single-domain state. In this work, the elastic properties and structural p…
The piezoelectric response of [001] poled domain engineered (1-x)Pb(Mg(13)Nb(23))O(3)-xPbTiO(3) (PMN-PT) crystals was investigated as a function of composition and phase using Rayleigh analysis. The results revealed that the intrinsic (reversible) contribution plays a dominant role in the high piezoelectric activity f…
In this study, antibacterial characteristic of silver/poly (lactic acid) nanocomposite (Ag/PLA-NC) films was investigated, while silver nanoparticles (Ag-NPs) were synthesized into biodegradable PLA via chemical reduction method in diphase solvent. Silver nitrate and sodium borohydride were respectively used as a silv…
Combination chemotherapy and nanoparticle drug delivery are two areas that have shown significant promise in cancer treatment. Combined therapy of two or more drugs promotes synergism among the different drugs against cancer cells and suppresses drug resistance through distinct mechanisms of action. Nanoparticle drug…
초록·키워드 목차 오류제보하기 등록된 정보가 없습니다. #butyl acrylate #emulsion polymerization #N-methylolacrylamide #triphenylvinylsilane #vinyl acetate 등록된 정보가 없습니다.
가혹한 부식환경 하에 사용되어 지고 있는 다양한 강구조물에 대해서 많은 표면방식법이 있다. 그 중의 한방법인 용사는 다양한 강구조물의 표면방식을 위하여 비교적 최근에 개발된 유용한 방식법이다. 그러나 용사피막도 환경오염의 가속화에 따라 점차 더욱 좋은 내식성을 필요로 하고 있다. 본 연구에서는 아아크 용사에 의해서 도막두께 200㎛의 피막을 만들었으며, 피막의 종류는 순 아연,순 알류미늄, 합금피막(Al:Zn=85:15) 및 (Al:Zn=95:5)의 합금피막이었다. 그리고 이들 피막의 내식성을 해수용액에서 전기화학적인 방법으로 고찰 하였다. 순 알류미늄 피막은 다른…
Abstract The compound 8-phenylazoguanosine (8PAG), a new type of photochromic nucleobase (PCN) that can be photoisomerized by visible light irradiation, was developed. 8PAG shows rapid and efficient reversible cis–trans isomerization and can be iteratively isomerized by alternate irradiation with 420 and 550 nm withou…
Zinc oxide (ZnO) thin films were deposited using atomic layer deposition.The electrical and optical properties were characterized using Hall measurements, spectroscopic ellipsometry and UV-visible spectrophotometry.The electronic concentration and the mobility were found to be critically dependent on the deposition te…
As an important step towards the realisation of silicon-based tandem solar cells using silicon quantum dots embedded in a silicon dioxide (SiO(2)) matrix, single-junction silicon quantum dot (Si QD) solar cells on quartz substrates have been fabricated. The total thickness of the solar cell material is 420 nm. The cel…
Abstract Chlorophyll-a derivatives were covalently linked with a π-extended boron aza-dipyrromethene moiety. In the synthetic dyads, photoinduced energy transfer from the former visible-light absorbing chlorin chromophore to the latter highly fluorescent unit in the near-infrared region was observed in a solution. The…
A layer-by-layer technique has been developed to synthesize FeOOH-Au hybrid nanorods that can be transformed into Fe(2)O(3)-Au and Fe(3)O(4)-Au hybrid nanorods via controllable annealing process. The homogenous deposition of Au nanoparticles onto the surface of FeOOH nanorods can be attributed to the strong electrosta…
PURPOSE: The present study introduces the preparation and in vitro characterization of a nanoparticle device comprising holmium acetylacetonate for radioablation of unresectable solid malignancies. METHODS: HoAcAc nanoparticles were prepared by dissolving holmium acetylacetonate in chloroform, followed by emulsificati…
A size-controlled Zn(OH)(2) template is used as a case study to explain the chemical strategy that can be executed to chemically engineering various nanoscale cavities. Zn(OH)(2) octahedron with 8 vertices and 14 edges is fabricated via a low temperature solution route. The size can be tuned from 1 to 30 μm by changin…
The application of plasma-enhanced chemical vapour deposition (PECVD) in the production and modification of carbon nanotubes (CNTs) will be reviewed. The challenges of PECVD methods to grow CNTs include low temperature synthesis, ion bombardment effects and directional growth of CNT within the plasma sheath. New strat…
Polymer additive migration into a food product is dependent upon numerous factors including the original concentration of the additive in the polymer, its solubility in the food, its diffusion coefficient in the polymer, its partition coefficient between the polymer and food, temperature, and time. The limited solubil…
The effects of γ-irradiation on the physico-chemical stability and mechanical properties of commercial polypropylene (PP) have been investigated using X-ray diffraction analysis, Raman spectroscopy, ultraviolent visible spectroscopy and tensile test. The γ-irradiation of polypropylene led to remarkable changes in the…
In this study, we report the preparation, luminescence, and targeting properties of folic acid-CdTe quantum dot conjugates. Water-soluble CdTe quantum dots were synthesized and conjugated with folic acid using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide-N-hydroxysuccinimide chemistry. The influence of folic acid on…
A polybenzimidazole supported Mo(VI) (PBI.Mo) catalyst has been prepared and characterised. The catalytic activities of the PBI.Mo catalyst in epoxidation of alkenes with tert-butyl hydroperoxide (TBHP) as an oxidant have been studied under different reaction conditions in a batch reactor. As alkene representatives we…