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Journal of Nanomaterials
Volume 2011 (2011), Article ID 237050, 2 pages
Nanocrystals-Related Synthesis, Assembly, and Energy Applications
1Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
2State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
3Center for Biological and Environmental Nanotechnology, Rice University, Houston, TX 77005, USA
4Department of Physics, Hampton University, Hampton, VA 23668, USA
Received 10 December 2010; Accepted 10 December 2010
Copyright © 2011 Quanqin Dai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fundamental material properties have been dramatically altered in the nanoscale regime because of quantum confinement effect. The unique size-tunable functionalities of nanomaterials make them involved in an extensive variety of energy applications, such as light-emitting diodes and solar cells. These applications have been demonstrated to cut energy consumption. In response to the ever-growing energy demands as well as the concerns of global warming, researchers are actively placing their enormous emphasis on the exploration of energy savings. During this exploration, the primary stage requires the design of appropriate strategies for the synthesis of high-quality nanocrystals in terms of size uniformity and superior optical/electronic properties. Especially, there is a need to seek green-chemistry approaches for the synthesis of environmentally benign and user-friendly nanocrystals. Another recent area of focus is the use of individual nanocrystals as building blocks for self-assembly, providing new opportunities to improve the nanocrystal performance.
Therefore, we organize the current special issue for Journal of Nanomaterials to provide the authors with a platform and readers with the latest achievements of nanocrystals-related synthesis, assembly, and energy applications. This special issue focuses on the fundamental science and technical applications of nanocrystals, covering the nanocrystals-related research area of synthesis, characterization, properties, assembly, films, processing, modeling, and devices for energy applications.
The articles related to synthesis, characterization and properties in this special issue include studies of the mechanisms and growth of flexible ZnO nanostructure arrays, facile synthesis of monodisperse ZnO nanocrystals, synthesis of vertically aligned dense ZnO nanowires, CdS nanotubes and Y-branched nanochannels fabricated by a double diffusion route, hydrothermal synthesis and characterization of single-crystalline α-Fe2O3 nanocubes, a user-friendly method for synthesizing high-quality NaYF4:Yb,Er(Tm) nanocrystals, a rational self-sacrificing template route to LiMn2O4 nanotubes and nanowires, synthesis of bismuth ferrite nanoparticles via a wet-chemical route at low temperature, synthesis of Ag nanostructures by photochemical reduction using citrate-capped Pt seeds, study of the P-type doping properties of ZnS nanocrystals, structural and mechanical properties of CrNx coatings deposited by medium-frequency magnetron sputtering with and without ion source assistance, optical properties of linoleic acid protected gold nanoparticles, and so on.
Authors also contributed papers to the areas of assembly and films, such as ordered self-assembly of nano-Pd-Ga/PMMA by ultrasonic processing, self-assembly of monodisperse spherical TiO2 nanocrystals, linear assembles of BN nanosheets, controllable assembly of hydrophobic superparamagnetic iron oxide nanoparticles with mPEG-PLA copolymers, polythene films with doped and undoped TiO2 nanoparticles, and the influence of lithium on nanosized films of Fe2O3.
The research topic of processing and modeling contains articles on electronic-excitation-induced processing in GaSb compound nanoparticles, and constitutive rheological modeling of flow serration behavior in metallic glasses.
In the applications of nanocrystals, authors report CdSe quantum dot-sensitized mesoporous TiO2 solar cells with CuSCN as solid-state electrolyte, fluoride nanoscintillators, and electrodeposition of nanometer-sized ferric oxide materials in colloidal templates for conversion of light to chemical energy.
The editors would like to thank the authors for their contributions to this special issue, the reviewers for their time and dedication, and Rasha Magdy (Publishing Editor) and Mostafa Salem (Editorial Staff) for their support and assistance.
William W. Yu
Michael Z. Hu