Proposed Triaxial Atomic Force Microscope Contact Free Tweezers for Nanoassembly

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Proposed Triaxial Atomic Force Microscope Contact Free Tweezers for Nanoassembly

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Title: Proposed Triaxial Atomic Force Microscope Contact Free Tweezers for Nanoassembly
Author: Brown, Keith A.; Westervelt, Robert M.

Note: Order does not necessarily reflect citation order of authors.

Citation: Brown, Keith A., and Robert M. Westervelt. 2009. Proposed triaxial atomic force microscope contact-free tweezers for nanoassembly. Nanotechnology 20(38): 385302.
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Abstract: We propose a triaxial atomic force microscope contact-free tweezer (TACT) for the controlled assembly of nanoparticles suspended in a liquid. The TACT overcomes four major challenges faced in nanoassembly, as follows. (1) The TACT can hold and position a single nanoparticle with spatial accuracy smaller than the nanoparticle size (~5 nm). (2) The nanoparticle is held away from the surface of the TACT by negative dielectrophoresis to prevent van der Waals forces from making it stick to the TACT. (3) The TACT holds nanoparticles in a trap that is size-matched to the particle and surrounded by a repulsive region so that it will only trap a single particle at a time. (4) The trap can hold a semiconductor nanoparticle in water with a trapping energy greater than the thermal energy. For example, a 5 nm radius silicon nanoparticle is held with 10 kBT at room temperature. We propose methods for using the TACT as a nanoscale pick-and-place tool to assemble semiconductor quantum dots, biological molecules, semiconductor nanowires, and carbon nanotubes.
Published Version: doi:10.1088/0957-4484/20/38/385302
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4728506

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  • FAS Scholarly Articles [7594]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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