Pressure Effects on the Atomic and Electronic Structure of Aligned Small Diameter Carbon Nanotubes

2008/05/05 by Sumit Saxena, Saxena, Sumit, Trevor A. Tyson +1
Materials Science · Physics and Astronomy · #Boron and Carbon Nanomaterials Research #Carbon Nanotubes in Composites #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.0805.0614

openalex publication_date 2008/05/05 · arxiv created 2008/08/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Density functional methods have been used to calculate the electronic properties of aligned smalldiameter single-walled carbon nanotubes under hydrostatic pressures. Abrupt pressure induced semiconductor-metal and metal-semiconductor transitions concomitant with changes in structure are observed. Novel and unexpected unit cell nanotube cross-sections are found. These tubes are observed to form interlinking structures at very high pressures. The large changes in electronic structure and the ability of different small diameter nanotubes to respond in different pressure regimes suggest their use in high pressure multiple switching devices.

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