Journal ArticleDOI
Octahedral multiple-twin model of tetrapod ZnO crystals
TLDR
In this paper, the origin of tetrapod shape arises from the formation of octahedral multiple twins due to the small c/a ratio of wurtzite ZnO, the presence of in version-type twin boundaries and a large growth anisotropy with respect to the crystal polarity.Abstract:
The characteristic morphology of tetrapod-shaped ZnO particles grown by oxidizing zinc vapour in air has been thoroughly interpreted by a growth process from octahedral multiple-twin embryos. The origin of the tetrapod-shape arises from firstly the formation of octahedral multiple twins due to the small c/a ratio of wurtzite ZnO, secondly the presence of in version-type twin boundaries and thirdly a large growth anisotropy with respect to the crystal polarity.read more
Citations
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Prospects of Colloidal Nanocrystals for Electronic and Optoelectronic Applications
TL;DR: Nanocrystals (NCs) discussed in this Review are tiny crystals of metals, semiconductors, and magnetic material consisting of hundreds to a few thousand atoms each that are among the hottest research topics of the last decades.
Journal ArticleDOI
Semiconducting and Piezoelectric Oxide Nanostructures Induced by Polar Surfaces
TL;DR: A review of recent progress in the synthesis and characterization of polar-surface-induced ZnO nanostructures, their growth mechanisms, and possible applications as sensors, transducers, and resonators can be found in this article.
Journal ArticleDOI
ZnO tetrapod materials for functional applications
TL;DR: In the last 15 years, more than 50,000 papers with zinc oxide (ZnO) in the title are listed within ISI database as mentioned in this paper, and the outstanding popularity of ZnO has many reasons; the most important one appears to be its multi-functionality resulting in applications in physics, chemistry, electrical engineering, material science, energy, textile, rubber, additive manufacturing, cosmetics, and pharmaceutical or medicine, as well as the ease to grow all kinds of nano- and microstructures.
Journal ArticleDOI
Direct Growth of Freestanding ZnO Tetrapod Networks for Multifunctional Applications in Photocatalysis, UV Photodetection, and Gas Sensing
Yogendra Kumar Mishra,Gaurav Modi,V. Cretu,Vasile Postica,Oleg Lupan,Tim Reimer,Ingo Paulowicz,Viktor Hrkac,Wolfgang Benecke,Lorenz Kienle,Rainer Adelung +10 more
TL;DR: This work demonstrates the versatile and single-step synthesis of ZnO-T with different arm morphologies by a simple flame transport synthesis (FTS) approach, forming a network that will be of interest for various advanced applications.
Journal ArticleDOI
ZnO Nanotetrapods: Controlled Vapor‐Phase Synthesis and Application for Humidity Sensing
Yongfu Qiu,Shihe Yang +1 more
TL;DR: In this paper, a controlled synthesis of ZnO nanotetrapods by combining metal-vapor transport, oxidative nucleation/ growth, fast-flow quenching, and water-assisted cleaning is reported.
References
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Journal ArticleDOI
Structure and growth of ZnO smoke particles prepared by gas evaporation technique
Makoto Shiojiri,Chihiro Kaito +1 more
TL;DR: In this paper, the ZnO smoke particles prepared by burning zinc metal in a gas mixture of 80% Ar and 20% O2 at a total pressure of 100 Torr were studied by electron microscopy.
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Growth model of tetrapod zinc oxide particles
TL;DR: In this paper, the prototype morphology of tetrapod zinc oxide particles, which was studied in detail in a previous paper [J. Crystal Growth f128 (1993) 1095], has been interpreted completely by the growth model from a multiple inversion-twin embryo.
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Twinning in Zinc Oxide
TL;DR: In this paper, the spatial angles among the four needle-shaped crystals were determined from stereoscopic micrographs with the use of the stereographic projection, and the crystals were found to be united by twinning on planes of the form.
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Growth of large tetrapod-like ZnO crystals II. Morphological considerations on growth mechanism
TL;DR: In this paper, the octahedral nuclei are formed and grown in the oxide scales accompanying the generation of stresses and these crystals are expelled out of the grain boundary when they become unable to resist the internal stress.
Journal ArticleDOI
Structure of tetrapod-like ZnO crystals
TL;DR: The morphology of tetrapod-like zinc oxide particles, produced by oxidizing zinc vapor, has been examined by optical and electron microscopy as discussed by the authors, showing that the four legs grow along the c-axis from a nucleus which has also the wurtzite structure.