Title

Analytical Method For The Construction Of Solutions To The Föppl-Von Kármán Equations Governing Deflections Of A Thin Flat Plate

Abstract

We observed a huge volume expansion of aligned single walled carbon nanotube (SWCNT) arrays accompanied by structural transformation during electrical breakdown in vacuum. The SWCNT arrays were assembled between prefabricated palladium source and drain electrodes of 2 μm separation on a silicon/silicon dioxide substrate by dielectrophoresis. At high electrical field, the SWCNT arrays erupt into a large mushroom-like structure. Systematic studies with controlled electrical bias show that above a certain field the SWCNTs swell and transform to nanoparticles and flower-like structures with a small volume increase. Further increases in electrical bias and repeated sweeping results in their transformation into amorphous carbon as determined from scanning electron microscopy and transmission electron microscopy (TEM). Cross-sectional studies using a focused ion beam and TEM show the height of a 2-3 nm SWCNT array increased to about 1 μm with a volume increase of ∼400 times. Electron energy loss spectroscopy reveals that graphitic sp 2 networks of SWCNT are transformed predominantly to sp 3. The current-voltage measurements also show an increase in the resistance of the transformed structure. © 2011 Elsevier Ltd. All rights reserved.

Publication Date

4-1-2012

Publication Title

International Journal of Non-Linear Mechanics

Volume

47

Issue

4

Number of Pages

1-6

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ijnonlinmec.2012.01.004

Socpus ID

84856786295 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84856786295

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