| Disorder and optical gaps in strained dense amorphous carbon and diamond nanocomposites. | |
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MedLine Citation:
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PMID: 22532117 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We employ empirical tight-binding simulations on strained tetrahedral amorphous carbon and diamond nanocomposite networks. For each applied strain, the optoelectronic properties are monitored through the absorption coefficient and the dielectric function. These lead to the optical gaps and are able to quantify the amount of disorder in the structures. We compare our results to those of unstrained nanostructured diamond and amorphous carbon (a-C) phases and link the degree of disorder in these materials to their structural details as a function of the external load. The atomic rearrangements and distortions imposed by the external strain in these structures are directly observable in their optoelectronic properties. We thoroughly discuss the interplay between increased external strain, structural and topological disorder, atomic rearrangements and their effect on the calculated optoelectronic properties. |
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Authors:
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Christos Mathioudakis; Maria Fyta |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-24 |
Journal Detail:
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Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 24 ISSN: 1361-648X ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: - |
Other Details:
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Languages: ENG Pagination: 205502 Citation Subset: - |
Affiliation:
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Department of Materials Science and Technology, University of Crete, PO Box 2208, 71003 Heraklion, Crete, Greece. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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