气候变化领域集成服务门户(CCPortal): Light-controlled self-assembly of semiconductor nanoparticles into twisted ribbons

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DOI	10.1126/science.1177218
	Light-controlled self-assembly of semiconductor nanoparticles into twisted ribbons
	Srivastava S.; Santos A.; Critchley K.; Kim K.-S.; Podsiadlo P.; Sun K.; Lee J.; Xu C.; Lilly G.D.; Glotzer S.C.; Kotov N.A.
发表日期	2010
ISSN	0036-8075
起始页码	1355
结束页码	1359
卷号	327 期号:5971
英文摘要	The collective properties of nanoparticles manifest in their ability to self-organize into complex microscale structures. Slow oxidation of tellurium ions in cadmium telluride (CdTe) nanoparticles results in the assembly of 1- to 4-micrometer-long flat ribbons made of several layers of individual cadmium sulfide (CdS)/CdTe nanocrystals. Twisting of the ribbons with an equal distribution of left and right helices was induced by illumination with visible light. The pitch lengths (250 to 1500 nanometers) varied with illumination dose, and the twisting was associated with the relief of mechanical shear stress in assembled ribbons caused by photooxidation of CdS. Unusual shapes of multiparticle assemblies, such as ellipsoidal clouds, dog-bone agglomerates, and ribbon bunches, were observed as intermediate stages. Computer simulations revealed that the balance between attraction and electrostatic repulsion determines the resulting geometry and dimensionality of the nanoparticle assemblies.
英文关键词	cadmium derivative; cadmium sulfide; nanocrystal; nanoparticle; tellurium; cadmium; computer simulation; crystal structure; electrical conductivity; nanotechnology; oxidation; telluride; article; computer simulation; geometry; illumination; light; oxidation; photooxidation; priority journal; semiconductor; shear stress; Cadmium Compounds; Computer Simulation; Light; Metal Nanoparticles; Microscopy, Electron; Oxidation-Reduction; Quantum Dots; Spectrometry, X-Ray Emission; Sulfides; Tellurium; Canis familiaris
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245584
作者单位	Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom; Department of Chemical and Biological Engineering, Chungju National University, 72 Daehak-ro, Chungju, Chungbuk 380-702, South Korea; Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, United States; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Department of Nanomedical Engineering, College of Nanoscience and Nanoengineering, Pusan National University, Miryang 627-706, South Korea; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
推荐引用方式 GB/T 7714	Srivastava S.,Santos A.,Critchley K.,et al. Light-controlled self-assembly of semiconductor nanoparticles into twisted ribbons[J],2010,327(5971).
APA	Srivastava S..,Santos A..,Critchley K..,Kim K.-S..,Podsiadlo P..,...&Kotov N.A..(2010).Light-controlled self-assembly of semiconductor nanoparticles into twisted ribbons.Science,327(5971).
MLA	Srivastava S.,et al."Light-controlled self-assembly of semiconductor nanoparticles into twisted ribbons".Science 327.5971(2010).