News Column

Study Data from University of Illinois Update Knowledge of Nanocrystals

June 27, 2014



By a News Reporter-Staff News Editor at Science Letter -- Current study results on Nanocrystals have been published. According to news reporting out of Urbana, Illinois, by NewsRx editors, research stated, "We show that progress in atomic resolution Z-contrast imaging now enables a detailed understanding of nanocrystal (NC) interaction with surface steps. The interaction is measured based on the shape, orientation, strain and interfacial energy of Au NCs on surface steps of rutile (TiO2) (110) surfaces with a small miscut."

Our news journalists obtained a quote from the research from the University of Illinois, "Au NCs with the approximate Au(111)([-110]) parallel to TiO2(110)([001]) epitaxial relationship are selected for study. Results show that the presence of surface steps induces a small rotation in the NCs in an amount less than the surface miscut angle. Atomic displacements measured from atomic resolution images show significant strain near the surface steps inside Au NCs. The shape of Au NCs on low miscut surfaces, however, is approximately similar. From this, an analysis of the average NC shape is performed using the modified Wulff-Kaishew theorem."

According to the news editors, the research concluded: "Compared to Au NCs on flat surfaces, the measurements show a large height/width ratio, lowered interfacial energy and increased triple line energy for NCs observed on surface steps."

For more information on this research see: Interaction of nanometer-sized gold nanocrystals with rutile (110) surface steps revealed at atomic resolution. Surface Science, 2014;625():16-22. Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Surface Science - www.elsevier.com/wps/product/cws_home/505676)

Our news journalists report that additional information may be obtained by contacting W.P. Gao, University of Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801, United States. Additional authors for this research include A.S. Choi and J.M. Zuo (see also Nanocrystals).

Keywords for this news article include: Urbana, Illinois, United States, Nanotechnology, Emerging Technologies, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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