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Induced Motion of Polymer Chains on Surfaces

James von Ehra, Robert E. Tuzun*, b, Donald W. Noidb, Bobby G. Sumpterb

aFirst author's affiliation: Zyvex LLC, 251 W. Renner Parkway, Suite 166, Richardson, TX 75080
bChemical and Analytical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6197

This is an abstract for a presentation given at the
Sixth Foresight Conference on Molecular Nanotechnology.
There will be a link from here to the full article when it is available on the web.


Molecular manufacturing will require the movement of raw material (consisting of small numbers of molecules) to be transported in a controlled way between work zones. In order to accomplish this, Drexler, has proposed a conveyer belt arrangement. In this work, we propose other methods to create directional motion on a molecular surface and present simulation results. In one method, a laser field is used to excite a vibrational mode which then causes the molecule to move across the surface. In the other method, the current from a nearby STM tip (which is modelled as a fixed charge) interacts with a localized charge (for example, a charged substituent). This interaction effectively lowers the barrier to surface transport

*Corresponding Address:
Robert Tuzun
Chemical and Analytical Sciences Division,Oak Ridge National Laboratory, Oak Ridge, TN 37831-6197
Phone: (423) 574-4992; Fax: (423) 576-5235


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