Advanced Materials Proceedings最新文献

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Silver Jubilee Assembly of Advanced Materials Congress 先进材料大会五十周年大会

Advanced Materials Proceedings

Pub Date : 2018-07-01 DOI: 10.5185/amp.2018/0101

引用次数: 0

Fabrication and luminescence properties in Yb –Tb co-doped a-SiCO thin films Yb -Tb共掺杂a-SiCO薄膜的制备及其发光性能

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp2018/411

L. Flores

Amorphous silicon oxycarbide (a-SiCxOy) single doped with Yb and co-doped with the couple Tb Yb thin films were grown on crystalline silicon substrates by rf magnetron sputtering. The elemental composition in at. % is determined by energy dispersive spectroscopy and fourier transform infrared spectroscopy allows to investigate the chemical properties of the host. The concentration of Yb in the single doped sample was 3.5% and for the codoped samples (Yb, Tb) were (3%, 0.9%), (3.5%, 0.6%) and (4%, 0.6%), respectively. Post-deposition annealing treatments were made in order to induce optical activation of the rare earths. Conversion or absorption of high energy photons were analyzed by photoluminescence spectroscopy. The photoluminescence spectra show that for a given temperature range in the thermal annealing process, as well as for the appropriate rare earth concentrations the activation of Yb and Tb is enhanced. A strong reduction of the Tb emission in contrast to the Yb emission in the a-SiCxOy,:Tb:Yb samples at annealing temperature at 500°C suggests a energy transfer from Tb to Yb ions. Copyright © 2018 VBRI Press.

采用射频磁控溅射的方法在晶体硅衬底上生长了单掺杂Yb和共掺杂Tb - Yb的非晶态氧化硅(a-SiCxOy)薄膜。的元素组成。%由能量色散光谱确定，傅里叶变换红外光谱允许研究宿主的化学性质。单掺杂样品中Yb的浓度为3.5%，共掺杂样品(Yb, Tb)的浓度分别为(3%，0.9%)，(3.5%，0.6%)和(4%，0.6%)。为了诱导稀土的光活化，对其进行了沉积后退火处理。用光致发光光谱法分析了高能光子的转换和吸收。光致发光光谱表明，在热处理过程中一定温度范围内以及稀土浓度适当时，Yb和Tb的活化得到增强。在500℃退火温度下，A - sicxoy，:Tb:Yb样品的Tb发射比Yb发射明显减少，表明Tb离子向Yb离子的能量转移。版权所有©2018 VBRI出版社。

引用次数: 0

Customer acceptance evaluation of design for material value conservation using structural equation modelling: A case study of plastic packaging 利用结构方程模型对材料价值节约设计的顾客接受度评价:以塑料包装为例

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/905

D. Gabriel

引用次数: 0

Mechanical, microstructural characterization and redesign of a BMX bicycle frame 小轮车车架的机械、微观结构表征及再设计

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/908

A. Zuleta

引用次数: 0

Polymeric number average molecular weight in submicron films as a tool for the manipulation of water phenomena in translucent coatings 亚微米薄膜中的聚合物数平均分子量作为半透明涂层中水现象操纵的工具

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/900

N. Lopez-Barbosa

引用次数: 0

Enhancement of luminescence properties of Mn2+ substituted dysprosium doped Zinc sulfide nanophosphor Mn2+取代镝掺杂硫化锌纳米磷光体发光性能的增强

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/412

S. Rajesh

Zinc Sulfide nanophosphor (ZnS) nanophosphor doped with 2 mol % Dysprosium (Dy) and co-doped with (2 – 6) mol % Manganese (Mn) was successfully prepared by cost-effective chemical co-precipitation method using polyvinylpyrrolidone (PVP) as the capping agent. The effects of dopant and co-dopant concentrations on the various properties of ZnS were investigated by various characterizations like Powder X-ray Diffraction (PXRD) studies confirmed the cubic zinc blende structure of ZnS and no impurity peaks corresponding to Dy doping and Co-doped by Mn was observed. Scanning Electron Microscope (SEM), Energy Dispersive X-ray spectroscopy (EDAX) confirmed the presence of dopant Dy and co-dopants Mn in the prepared ZnS. Photoluminescence (PL) studies on Dy doped Mn and co-doped ZnS nanophosphor indicated that the emission wavelength 605 nm is tunable in the range of 400–650 nm with the incorporation of doped Dy and Co-doped Mn into ZnS host lattice with the excitation wavelength of 320 nm. Blue color of ZnS doped Dy by enhances to orange color due to co-doped with Mn ions. The chromaticity co-ordinates (CIE) and Correlated color temperature (CCT) of the phosphor were shows enhancement of blue to orange region; hence, it is useful for the fabrication of orange component of WLEDs and display applications. Copyright © 2018 VBRI Press.

以聚乙烯吡咯烷酮(PVP)为封盖剂，采用经济高效的化学共沉淀法成功制备了掺杂2mol %镝(Dy)和共掺杂(2 - 6)mol %锰(Mn)的硫化锌纳米磷(ZnS)。通过粉末x射线衍射(PXRD)研究了掺杂和共掺杂浓度对ZnS各种性能的影响，证实了ZnS的立方锌闪锌矿结构，没有观察到Dy掺杂和Mn共掺杂对应的杂质峰。扫描电子显微镜(SEM)、x射线能谱(EDAX)证实了制备的ZnS中存在掺杂剂Dy和共掺杂剂Mn。对Dy掺杂Mn和共掺杂ZnS纳米荧光粉的光致发光(PL)研究表明，在激发波长为320 nm的ZnS主晶格中掺杂Dy和共掺杂Mn，发射波长605 nm在400 ~ 650 nm范围内可调。掺杂Dy的ZnS由于与Mn离子共掺杂，其蓝色增强为橙色。荧光粉的色度坐标(CIE)和相关色温(CCT)显示出蓝色到橙色区域的增强;因此，它是有用的制造橙色组件的wled和显示应用。版权所有©2018 VBRI出版社。

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引用次数: 0

Study on time-dependent surface properties of plasma treated polymer fibers 等离子体处理聚合物纤维表面特性随时间变化的研究

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/890

J. Trejbal

引用次数: 0

Fabrication of biocompatible nanocomposite consisted of zinc oxide nanoparticles based poly (Acrylonitrile-co-Acrylic acid) 纳米氧化锌基聚丙烯腈-丙烯酸生物相容性纳米复合材料的制备

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/420

Nasrullah Shah

引用次数: 1

High deformation effects on the plasticity of ultra-high carbon steel wires 高变形对超高碳钢丝塑性的影响

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/930

E. Brandaleze

引用次数: 0

Green water flooding of fractured and heterogeneous oil reservoirs at high salinity and high temperature 高矿化度高温裂缝性非均质油藏绿水驱研究

Advanced Materials Proceedings

Pub Date : 2018-06-01 DOI: 10.5185/amp.2018/898

Omar Chaalal, Hameed Mohamed, E. Lwisa

Many oil formations contain water having high salinity and/or high concentrations of divalent ions such as calcium or magnesium dissolved therein, and are additionally at high temperatures. Most of the available surfactants used in oil recovery operations are either ineffective in high salinity or high hardness waters, or incapable to stand the higher temperatures encountered in many formations. A powerful natural material that improves enhance oil reservoirs recovery through the reduction of interfacial tension and increases the volumetric sweep efficiency of fractured and /or heterogeneous oil reservoirs is introduced in this paper. The novel green surfactant for EOR is extracted from Sisyphus Spina Christi plant and Aloe Vera plant. The surfactant is 100% natural, safe and environmental friendly. It recovers more than 96% of the oil trapped in any oil reservoir. This recovery is a breakthrough in the field of enhanced oil recovery. It works at high salinity (up to 172000 ppm) and a temperature over than 90 Celsius. It can handle a bivalent ions (14000 ppm for Ca and 3000 for Mg) and monovalent ions (57600 for ppm Na and 122000 ppm Cl). The green material is mixed with the formation water and is stable over a wide range of formation temperatures and water salinities and hardness values. Copyright © 2018

许多油层含有高盐度和/或高浓度的二价离子，如钙或镁溶解在其中，并且处于高温下。大多数用于采油作业的表面活性剂要么在高盐度或高硬度的水中无效，要么无法承受许多地层中遇到的高温。本文介绍了一种强大的天然材料，它可以通过降低界面张力来提高油藏采收率，并提高裂缝和/或非均质油藏的体积波及效率。从西西弗斯和芦荟中提取了一种新型绿色提高采收率表面活性剂。表面活性剂100%纯天然，安全环保。它能回收任何油藏中96%以上的原油。这是提高采收率领域的一个突破。它可以在高盐度(高达172000 ppm)和超过90摄氏度的温度下工作。它可以处理二价离子(14000 ppm的Ca和3000毫克)和单价离子(57600 ppm的Na和122000 ppm的Cl)。绿色材料与地层水混合，在很大的地层温度、水的盐度和硬度值范围内都是稳定的。版权所有©2018

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引用次数: 0

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