Modeling electrostatic and quantum detection of molecules

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We describe two different modes for electronically detecting an adsorbed molecule using a nanoscale transistor. The attachment of an ionic molecular target shifts the threshold voltage through modulation of the depletion layer electrostatics. A stronger bonding between the molecule and the channel, involving actual overlap of their quantum mechanical wavefunctions, leads to scattering by the molecular traps that creates characteristic fingerprints when scanned with a backgate. We describe a theoretical approach to model these transport characteristics.
11 pages, 5 figures

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Mesoscale and Nanoscale Physics, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/167201

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0808.2262
 http://arxiv.org/abs/0808.2262
 Vasudevan, S.; Walczak, K.; Kapur, N.; Neurock, M.; Ghosh, A.W., "Modeling Electrostatic and Quantum Detection of Molecules," Sensors Journal, IEEE, vol.8, no.6, pp.857-862, June 2008
 doi:10.1109/JSEN.2008.923264

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arXiv