News Column

Investigators from Louisiana State University Target Nanostructures

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Nanostructures is the subject of a report. According to news reporting originating in Baton Rouge, Louisiana, by NewsRx journalists, research stated, "An emerging challenge for nanoscale measurements is to capture and quantify the magnitude of structural changes in response to environmental changes. Certain environmental parameters can affect the nanoscale morphology of samples, such as changing the pH, solvent polarity, ionic strength, and temperature."

The news reporters obtained a quote from the research from Louisiana State University, "We prepared test platforms of n-octadecyltrichlorosilane ring nanostructures to study surface morphology changes at the nanoscale in selected liquid media compared to dry conditions in air. Particle lithography combined with organosilane vapor deposition was used to fabricate nanostructures of regular dimensions. Multi layer nanostructures of OTS were used as a test platform for scanning probe studies of solvent-responsive properties where the sides of designed ring structures expose a 3D interface for studying the interaction of solvents with molecular side groups. In dry, ambient conditions, nanostructures of OTS were first imaged using contact mode atomic force microscopy (AFM). Next, ethanol or buffer was introduced to the sample cell, and images were acquired using the same probe. We observed substantial changes in the lateral and vertical dimensions of the ring nanostructures in AFM topography frames; the sizes of the rings were observed to swell by tens of nanometers. Even after heat treatment of samples to promote cross-linking, the samples still evidenced swelling in liquid media."

According to the news reporters, the research concluded: "This research will have consequences for studies of the properties of nanomaterials, such as solvent-responsive organic films and polymers."

For more information on this research see: Solvent-Responsive Properties of Octadecyltrichlorosiloxane Nanostructures Investigated Using Atomic Force Microscopy in Liquid. Langmuir, 2014;30(19):5466-5473. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Langmuir -

Our news correspondents report that additional information may be obtained by contacting S.A. Kulkarni, Louisiana State University, Dept. of Chem, Baton Rouge, LA 70803, United States. Additional authors for this research include V.D. Lyles, W.K. Serem, L. Lu, R. Kumar and J.C. Garno (see also Nanostructures).

Keywords for this news article include: Louisiana, Nanoscale, Baton Rouge, United States, Nanostructural, Nanostructures, 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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