Nano Archive

Force applied to a single molecule at a single nanogate molecule filter

Takimoto, Baku and Nabika, Hideki and Murakoshi, Kei (2010) Force applied to a single molecule at a single nanogate molecule filter. Nanoscale .

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Abstract

We have investigated the origin ofmolecule filtering systembased on a chemical potential barrier produced by thermodynamically driven molecular flow in a nanoscopic space at nanogates. Single molecule tracking experiments prove that the highly localized potential barrier allows for selective manipulation of the target molecule. We propose the presence of a force, a few fN per molecule, to decelerate the molecule’s movement at the nanogate, which is comparable to or larger than the force applied by conventional electrophoretic operation. The present force can be tuned by changing the nanogate width at the nanometre level. These findings allow us to propose an accurate design of novel devices for molecular manipulation on an ultra small scale using a very small number of molecules without any external biases.

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:9961
Deposited By:CSMNT
Deposited On:28 Nov 2010 14:48
Last Modified:28 Nov 2010 14:48

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