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Examining Nanoparticle Assemblies Using High Spatial Resolution X-ray Microtomography

Jenneson, P M, Luggar, R D, Morton, E J, Gundogdu, O and Tuzun, U (2004) Examining Nanoparticle Assemblies Using High Spatial Resolution X-ray Microtomography Journal of Applied Physics, 96 (5). ISSN 00218979

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Abstract

An experimental system has been designed to examine the assembly of nanoparticles in a variety of process engineering applications. These applications include the harvesting from solutions of nanoparticles into green parts, and the subsequent sintering into finished components. The system is based on an x-ray microtomography with a spatial resolution down to 5 mum. The theoretical limitations in x-ray imaging are considered to allow experimental optimization. A standard nondestructive evaluation type apparatus with a small focal-spot x-ray tube, high-resolution complementary metal oxide semiconductor flat-panel pixellated detector, and a mechanical rotational stage is used to image the static systems. Dynamic sintering processes are imaged using the same x-ray source and detector but a custom rotational stage which is contained in an environmental chamber where the temperature, atmospheric pressure, and compaction force can be controlled. Three-dimensional tomographic data sets are presented here for samples from the pharmaceutical, nutraceutical, biotechnology, and nanoparticle handling industries and show the microscopic features and defects which can be resolved with the system.

Item Type: Article
Additional Information: Published in <i>Journal of Applied Physics,</i> Vol. 96, Iss. 5. Copyright 2004 American Institute of Physics. Click <a href=http://jap.aip.org/>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:07
Last Modified: 23 Sep 2013 18:26
URI: http://epubs.surrey.ac.uk/id/eprint/241

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