Crystal Research and Technology
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor: Wolfgang Neumann (Editor-in-Chief), Klaus-W. Benz (Consulting Editor)
Online ISSN: 1521-4079
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Recently Published Articles
- You have full text access to this OnlineOpen articlePhysical boundaries within aggregates – differences between amorphous, para-crystalline, and crystalline Structures
Peter Albers, Monika Maier, Martin Reisinger, Bernd Hannebauer and Rudolf Weinand
Article first published online: 3 AUG 2015 | DOI: 10.1002/crat.201500040
The macro- and micro-morphological properties of commercially available oxide powders in common use are determined as received and after dispersing to the level of the smallest compact structures. Grain- and phase- boundaries observed in the aggregates of crystalline materials are completely absent in amorphous synthetic silica and para-crystalline carbon black. In these cases the aggregate is the constituent particle.
- In situ atomic force microscopy studies of growth mechanisms and surface morphology of zinc thiourea sulfate crystals
Jie Song, Mingwei Li, Yachao Cao and Huawei Yin
Article first published online: 3 AUG 2015 | DOI: 10.1002/crat.201400482
In situ atomic force microscopy has been utilized in studies of the growth mechanism on the (100) face of zinc tris (thiourea) sulphate crystals growing from solution. The growth on the (100) face of pure ZTS crystal is mainly controlled by two dimensional nucleation mechanisms. The spread of nuclei, advancement of steps and formation of pits are studied. The kinetic parameters are also roughly estimated.
- Uniformity investigation of MOCVD-grown LED layers
Zhimin Jiang, Han Yan, Sheng Liu, Zhi Zhang, Zhiyin Gan and Haisheng Fang
Article first published online: 3 AUG 2015 | DOI: 10.1002/crat.201500135
The paper investigates the uniformity of MOCVD-grown LED layers, including excited wavelength, luminous intensity and film thickness uniformities. The analysis shows the growth quality of the each zone in the reactor and discloses the related reasons. Zone A and B have similarly better uniformities, while zone C has the worst and, consequently, should be the focus of optimization in the future.
- Characterization of annealed zinc oxide nanotip array prepared by chemical bath deposition
Ming-Kwei Lee and Jyun-Jie Jhang
Article first published online: 3 AUG 2015 | DOI: 10.1002/crat.201500130
The sputtered time of AZO seed layer is crucial for ZnO nanotip density on glass substrate by chemical bath deposition. For 300 sec sputtered AZO seed, vertically oriented and dense CBD-ZnO nanotip array grown for 6 hours acts as a good ultraviolet sensor. For 600 sec sputtered AZO seed, ultraviolet sensor shows larger decay time caused by the block of oxygen flow path from too dense CBD-ZnO nanotip array.
- Optical and Photocatalytic properties of Mn-doped CuO nanosheets prepared by hydrothermal method
Tingting Jiang, Junhan Kong, Yongqian Wang, Dawei Meng, Dagui Wang and Meihua Yu
Article first published online: 3 AUG 2015 | DOI: 10.1002/crat.201500152
Mn-doped CuO nanosheets can significantly enhance absorption activity both in UV and visible light region in comparision to commercial CuO powder. This paper presents another possibility in the field of photocatalytic degradation of organic pollutants. The mechanism for the enhanced visible-light-responsive of Mn-doped CuO photocatalysts is proposed.