Materials Literature
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本實驗使用電解沉積法於基材STAVAX 420上先沉積一氧化鋯再沉積氧化鋁陶瓷之雙層薄膜。而藉著不同的電化學參數（濃度、電位及時間）和不同的燒結條件來控制，用以決定出最佳之沉積鍍膜製程條件，並且利用恆電位儀、SEM/EDS、X-ray、硬度測試、磨耗試驗、刮痕硬度試驗和動態的極化作用測試等來探討基材沉積薄膜後之各項性質(特性)，特別再針對抗腐蝕的能力作進一步的研究與分析。\n 藉由選定的電解液濃度對基材掃出陰極極化曲線，並找出最佳沉積電位與時間，再搭配最佳燒結溫度，可得到最好的沉積薄膜與其特性。\n 由XRD的結果發現，此法所製備的氧化鋯/氧化鋁在450℃燒結時為γ-Al2O3相。實驗結果顯示，薄膜表面狀態對抗腐蝕性有極大的影響，…
Scaffolds play a vital role in tissue engineering in mimicking the extra cellular matrix, such that it provides suitable environment for tissue regeneration. Recent studies have shown that Pullulan is a potential biomaterial for vascular engineering due to its biocompatibility and superior mechanical strength. The fea…
Studies of the magnetic field dependence of the transport critical current density (Jct) and the grain connectivity of MgB2/Fe wires fabricated from ball-milled boron have been conducted in detail, and strong correlations have been found, as evidenced by differences in grain size, critical transition temperature, and…
(BYZ) pellets with x=0.06-0.4 were fabricated by solid state reactions with a relative density higher than 95\%. The microstructures of the BYZ pellets reveal that BYZ surface has higher porosity than that of bulk, which may arise from the BaO evaporation during sintering process. The impedance analysis shows that the…
The development of plastic injection moulding flourished after World War one, when people needed parts to be produced in a high volume, through an economical and highly repeatable methodology. Throughout time, countless methods have been brainstormed and many technical minds sought to meet the demand to reduce mouldin…
With advances in silicon microfabrication techniques, electromechanical sensors are \nshrunk to nanometer scale. Besides enhanced sensitivity, these nanoscaled sensors are \nfound with improved electromechanical and thermoelectric property. Although the future \nof these devices is promising, the feasibility of having…
本研究應用反應性射頻磁控濺鍍法，在聚對苯二甲酸乙二醇酯(PET)基材上成功鍍出優質的TiNxOy薄膜。藉由改變實驗製程參數，包括射頻功率密度、基材偏壓、氮氣流量比例等，並調控濺鍍時間與薄膜厚度，製備各種TiNxOy薄膜。深入分析TiNxOy薄膜之相關特性，包括薄膜表面形貌、結構組成、阻水/阻氣率與水氣/氧氣滲透活化能等，並探討各種製程參數與TiNxOy薄膜特性之關係，藉以尋求最佳製程參數並獲得優異品質的TiNxOy薄膜。\n 研究結果顯示，濺鍍TiNxOy薄膜之電漿中，主要包含Ti、Ar、Ar+、N2與N2+等物種，且射頻功率密度與氮氣流量比例等製程參數之改變，會顯著影響這些物種的光激發強度。TiNxOy薄膜沉積速率會隨著射頻功率…
Ce travail de mémoire porte essentiellement sur la caractérisation de réseaux de polymère par une méthode théorique et une méthode expérimentale. Expérimentalement, nous avons analysé l’influence de différents paramètres tels que la composition de départ, le taux de réticulation sur le cinétique de gonflement des rése…
Рябков В.М., Лапин А.С., Трофимов М.А., Карчин Ф.А. АВТОМАТИЗАЦИЯ ПРО ЕКТИРО ВАНИ Я И ПРОИ ЗВОД СТВА В ДЕРЕ ВЯННО М МАЛОЭТАЖНО М ДО МОСТРОЕНИ. Проведен анализ компьютерных программ проектирования деревянного дома. Разработан программно-аппаратный комплекс для автоматизированного проектирования и управления линией изго…
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Complement activation causes opsonization of foreign particles leading to particle elimination from the blood. Complement-mediated opsonization of charged and large liposomes presents a fundamental problem in their use to deliver therapeutic agents in vivo. To prolong the circulation half-lives of such liposomes, comp…
通过在铝热剂中引入ZrO2（4Y）粉末，在超重力下燃烧合成制备出不同成分与结构的Al2O3／ZrO2（4Y）大体积复合陶瓷板材，并研究了复合陶瓷成分、显微结构与力学性能之间的关系。XRD、SEM与EDS分析表明，Al2O3／33ZrO2（4Y）是以取向各异且纳微米t—ZrO2纤维呈三角对称镶嵌其上的棒状共晶团为基，其周围分布着t-ZrO2微米球晶；同时，Al2O3／40ZrO2（4Y）则以t—ZrO2微米球晶为基，周围分布着不规则形状的a—Al2O3晶及少量的共晶团组织。与国外定向凝固Al2O3／ZrO2（Y2O3），Al2O3／33ZrO2（4Y）复合陶瓷比较强硬性的提高可归因于材料的高致密性、小尺寸缺陷及残余压应力增韧、相变增…
In this work, the properties of colored interference thin films grown by an electrochemical pulsed current process developed at Fundacao Centro Tecnologico de Minas Gerais – CETEC, using sulfochromic solution with a low chromium concentration at different temperatures were investigated. The physical, morphological and…
Hydroxyl Terminated Polybutadiene (HTPB) based polyurethane elastomers are widely \nused as binders for composite propulsion systems used in modern rockets and missiles. \nHowever, the hydroxyl terminated polymer, HTPB, used in the formulation of the \npropellant is inert, which dilutes energy density of the composite…
We applied periodic density-functional theory (DFT) to investigate the mechanism of ethanol dehydrogenation and water gas shift (WGS) reaction on a 2Ru/Al2O3 (110) surface. A structure with ethanol adsorbed with its O atom attached to the Al atom and βC terminal near by the Ru atom is calculated to exhibit the most st…
This thesis describes the development of photothermal nanoshell therapy activated by proteases. Hirsch et al. previously showed that the optical spectrum of crosslinked nanoshells within the UV-visible range reveals a broader, red-shifted, and lower peak absorbance as compared to disperse nanoshells. As described in t…
The effectiveness of Alpha-particle Energy Loss (AEL) spectroscopy for profiling 1D grating structures was investigated. An analytic simulation of AEL spectra was developed and compared with a Monte Carlo simulation. By a least squares fitting procedure, the analytic simulation was used to extract grating parameters f…
The main purpose of this work was the study of long chain esters production, using decyl acetate as model compound, by enzymatic catalysis in supercritical media, with the aim of developing a sustainable, clean and efficient process as an alternative to the traditional chemical processes. The combination of a sustaina…
Using density functional theory (DFT) with ultrasoft pseudotentials and plane wave basis to calculate the reaction of GeH4 dissociative adsorption onto Ge(100). Through the analysis of structure, energy and density of state (DOS) to investigate the following three reaction path: single dimer mode (SDM), adjacent two d…
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