Abstract
Graphene layers are stable, hard, and relatively inert. We study how tensile stress affects σ and π bonds and the resulting change in the chemical activity. Stress affects more strongly π bonds that can become chemically active and bind to adsorbed species more strongly. Upon stretch, single C bonds are activated in a geometry mixing 120° and 90°, an intermediate state between sp2 and sp3 bonding. We use ab initio density functional theory to study the adsorption of hydrogen on large clusters and two-dimensional periodic models for graphene. The influence of the exchange-correlation functional on the adsorption energy is discussed.
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Dates
Type | When |
---|---|
Created | 16 years, 9 months ago (Nov. 8, 2008, 11:18 a.m.) |
Deposited | 2 years, 1 month ago (June 27, 2023, 3:19 p.m.) |
Indexed | 3 weeks, 6 days ago (July 30, 2025, 6:52 a.m.) |
Issued | 16 years, 9 months ago (Oct. 27, 2008) |
Published | 16 years, 9 months ago (Oct. 27, 2008) |
Published Online | 16 years, 9 months ago (Oct. 31, 2008) |
Published Print | 16 years, 9 months ago (Oct. 27, 2008) |
@article{de_Andres_2008, title={First-principles calculation of the effect of stress on the chemical activity of graphene}, volume={93}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.3010740}, DOI={10.1063/1.3010740}, number={17}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={de Andres, P. L. and Vergés, J. A.}, year={2008}, month=oct }