纳米氧化铟制备的研究进展

综述了纳米氧化铟的基本性能，重点介绍了国内外用气相法、液相法、固相法制备纳米氧化铟的最新研究进展，并对各种制备方法的优缺点进行了评述。阐述了目前纳米氧化铟制备领域存在的主要问题，论述了纳米氧化铟的应用领域，并展望了其今后的发展。     

掺锡氧化铟纳米粉体制备的研究进展

掺锡氧化铟纳米粉体由于其独特的性能,在电光领域得到广泛应用.概述了制备纳米级掺锡氧化铟粉末的主要方法,并阐述了不同合成方法的工艺及特点,同时指出了高品质掺锡氧化铟粉末制备的发展趋势.     

纳米氧化铟粉体的形貌与结构研究

用湿化学法制备了纳米极氧化铟超细粉体。利用透射电子显微镜、图像分析仪研究了纳米氧化铟粉体的形貌、尺寸分布和结构特征。结果表明，氧化铟粉体呈方片状，尺寸在10-30nm，化学组分高纯，达到了纳米级粉末要求；粉体的尺寸均匀，但在不同条件下制得的粉体，其尺寸相差较大；制备得到的氧化铟超细粉体的结构为体心立方。     

一维纳米氧化锌的制备及应用研究进展

本文对一维纳米氧化锌的制备方法进行了综述,包括气相法、液相法和模板法;重点讨论了一维纳米氧化锌在太阳能电池、传感器、多功能纺织品以及有机物光催化降解等方面的应用;指出了一维纳米氧化锌制备中存在的问题,并对其后续发展进行了展望.     

微乳液法制备气敏材料的技术及应用

基于微乳液纳米反应器制备气敏材料是制备纳米材料的新方法.介绍了微乳液作为纳米反应器制备气敏材料的方法及原理,重点综述了微乳液法在制备纳米气敏材料方面的研究状况,总结了微乳液法制备纳米颗粒粒径大小的影响因素,并提出了微乳液法制备纳米气敏材料今后的发展方向.     

液相法制备纳米镍粉研究进展

详细介绍了液相法制备纳米镍粉的研究进展,并对液相法制备纳米镍粉的一些影响因素进行了探讨,例如反应物和还原剂的浓度、温度、表面活性剂等。对比分析了一些制备方法的特点,同时简单地介绍了纳米镍粉的应用前景和发展趋势。     

液相法制备纳米镍粉研究进展

详细介绍了液相法制备纳米镍粉的研究进展．并对液相法制备纳米镍粉的一些影响因素进行了探讨．例如反应物和还原剂的浓度、温度、表面活性剂等。对比分析了一些制备方法的特点．同时简单地介绍了纳米镍粉的应用前景和发展趋势。     

机械球磨法在纳米储氢材料制备中的应用

机械球磨法是纳米储氢材料制备和加工的重要方法之一。通过机械球磨法制备的材料具有纳米化、合金化和非晶化等优良特性,储氢材料的动力学和热力学性能得到改善。机械球磨法操作工艺简单、成本低、效率高,使其成为制备纳米储氢材料的理想方法之一。简要介绍了机械球磨法的基本原理,重点阐述了机械球磨法在制备纳米储氢材料方面的应用,并对影响机械球磨效果的主要因素进行了分析。对于机械球磨法在制备纳米储氢材料领域的实际应用具有一定的指导意义。     

氧化铟空心球的合成和光致发光性能研究

在180℃水热处理葡萄糖和铟盐的混合物,然后在空气中烧结制备了氧化铟空心球.利用场发射扫描电镜、透射电镜、X射线衍射等对其形貌和结构进行分析.结果表明,氧化铟空心球为多孔结构,其粒径为800～1000nm,由密堆积的纳米粒子组装而成.讨论了氧化铟空心球的形成机制和光致发光特性.     

纳米碳酸钙制备技术的研究进展

介绍了国内纳米碳酸钙的几种制备技术,重点对间歇式碳化法、超重力法的制备工艺、技术特点进行了评述.总结了国内纳米碳酸钙的生产现状,并对今后的发展提出了自己的看法.     

超微粉制备技术及其进展

论述了近年来微粉的各种制备方法及其进展，包括固相法，液相法和气相法的原理，种类和特点，并指出了超微粉备技术和发展方向。     

合成榍石的研究现状

榍石是一种稳定的矿物,是人造岩石固化高放射性废弃物较理想的基材之一。本文中从榍石的结构、性质及合成方法等方面进行全面的综述,同时对合成榍石的最新进展进行评述并展望了榍石在高放射性废弃物固化处理中的应用前景,为相关的研究工作提供参考依据。     

Reconstruction of the Shape of a Wavefront in the Presence of Large Phase Changes

A modified method of splicing (sewing together) phases along their first derivatives is described. It is shown that in the presence of smooth sections of the phase surface it is possible to reconstruct the shape of a wavefront for large phase changes.     

组分偏离对PMN-PT弛豫复合钙钛矿相合成的影响

采用先驱体法合成钙钛矿相0.67PMN-0.33PT。XRD物相分析表明，MgO和PbO适当的过量有利于合成纯钙钛矿相的0.67PMN-0.33PT。采用MgO过量2％－4％,PbO过量5％－7％，在低于PbO熔点温度下合成单一钙钛矿结构的0.67PMN-0.33PT。     

金属夹心CFRP复合材料超声检测方法

新型机翼、弹翼等结构已采用金属夹心碳纤维增强（Carbon Fiber Reinfored Polymer，CFPR）复合材料结构。针对该类复合材料结构的材料组成和结构特点，分析和对比常用的超声穿透法和超声反射法能否对金属夹心CFPR复合材料内部质量进行检测，提出了先采用超声C扫穿透法确定缺陷的平面位置，然后采用高分辨率超声A扫反射法确定复合材料中分层缺陷及采用超声相位法确定复合材料与金属间的脱粘缺陷的方法。采用提出的方法检测带有预置缺陷的试样和实际产品。检测结果表明，提出的方法可准确检测试样中大小为5 mm×5 mm的预置人工分层和脱粘，且能准确检测实际产品中的缺陷。     

一种新的质量图导引路径积分相位展开算法

本文首先简要介绍了路径积分相位展开方法的原理，针对路径积分法在处理轮廓不连续包裹相位图时存在的缺陷，提出了一种新的质量图用来导引相位展开。算法以包裹相位质量为依据，最先展开质量最高的像素，最后展开质量最低的像素，以防止相位展开误差的传播，把不可避免的相位展开误差局限在最小的区域内。实验结果表明，该算法计算速度快，能有效地处理轮廓不连续相位展开问题。     

Synthesis of tapered TiO2 tubes by replication of ZnO

Micrometer-long tapered TiO₂ tubes have been successfully prepared by a vapor phase method, using tetrapodlike ZnO as template and tetrabutyl titanate (TBT) as titanium source. A very homogeneous TiO₂ coating layer was first prepared on tetrapodlike ZnO and the ZnO core was removed by hydrochloric acid solution. It was found that the obtained tubes were uniform and composed of anatase TiO₂ nanocrystallites. The wall thickness of the TiO₂ tubes varies from 20 to 60 nm by adjusting the amount of TBT. The BET surface area reaches 95 m² g^− 1. The combination of the tubular structure and special morphology may improve the mass transport and benefit to the recovery of the TiO₂ tubes photocatalyst from treated waste water.     

Retrieving ESPI Map of Discontinuous Objects via a Novel Phase Unwrapping Algorithm

Abstract:  This work presents an effective scheme for the phase unwrapping of electronic speckle pattern interferometry (ESPI) map of discontinuous objects. ESPI is a highly effective measurement approach for industry and academia. However, due to the speckle noise, its unwrapping job is quite difficult, especially, when treating ESPI maps obtained from the deformation field of an object containing height discontinuities. The minimum L^p norm method developed by Ghiglia and Romero can treat the aforementioned problem with acceptable accuracy, but takes a long time to run. Therefore, this study presents a novel method based on a hybrid of the regional algorithm proposed by Gierloff, the branch cut method presented by Goldstein et al . and the (spatially) parallel unwrapping method with region-referenced algorithm developed by Huang and He. The proposed algorithm can retrieve ESPI maps with height discontinuities within acceptable accuracy and effectiveness.     

On the stability of intermetallic phases

A general methodology using atomic clusters is applied to three problems connected to the study of alloy phase stability. The cluster method proposed by Allen and Cahn is applied to non-ideal hcp structures under tetrahedral approximation using multiatom interactions. The possible ground-state structures which are stable at absolute zero temperature are obtained. A geometrical representation in 4D parameter space of the possible strengths of multiatom interactions permitted for these structures is illustrated in terms of a 2D analogue. Extending these ideas, the cluster variation method (CVM) proposed by Kikuchi is applied to fcc structures under tetrahedral approximation to find the effect of multiatom interactions on the topology of the coherent phase diagrams in which all the phases present are derivable by mere rearrangement of atoms on the parent disordered structure. In addition, the possible invariant reactions are identified in such coherent phase diagrams. Finally the CVM is applied for calculating a model incoherent phase diagram, that of Ti-Zr system, where disordered hcp and bcc phases are present. The free energies of hcp and bcc phases are formulated using CVM procedures respectively under tetrahedral-octahedral and tetrahedral approximations. The CVM is shown to be in better agreement with the thermodynamic data and to be able to reproduce the correct value of measured enthalpy of transformation compared to that given by the regular solution model, which significantly overestimates the same.