8-12 July 2013
Africa/Johannesburg timezone
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Study of Nanomaterials under High Pressure

Presented by Dr. Spirit TLALI, Mr. Kao MORUTI, Mr. Nkuebe MOLEKO on 9 Jul 2013 from 17:40 to 18:40
Type: Poster Presentation
Session: Poster1
Track: Track A - Division for Condensed Matter Physics and Materials

Abstract

A simple Theory is proposed to predict the effect of pressure to study the volume expansion of nanomaterials. Different possible forms of equation of state are discussed with their correlations. Only two input parameters, namely, the bulk modulus and its first pressure derivative are required for calculations. We have considered a wide variety of nanomaterials, such as, metals [Ni (20 nm), α-Fe (nanotubes), Cu (80nm) and Ag (55nm)], semiconductors [Ge (49 nm), Si, CdSe (rock-salt phase), MgO (20nm) and ZnO], carbon nanotube (CNT), ZnSe(Zinc Blende 80nm) and Znse(Rocksalt Phase 80nm) to analyze the effects of pressure on them. The results have been compared with the available experimental data as well as with those obtained through other theoretical approaches. A good agreement between theory and experiment demostrates the validity of present approach.

Award

No

Level

No

Supervisor

Dr Madan Singh, m.singh@nul.ls , National University of Lesotho, Lesotho

Paper

yes

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