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MTU Laser-Based Direct-Write Techniques: Recent Development and Nanoparticles Patterning Results

Published online by Cambridge University Press:  11 February 2011

Edward M. Nadgorny ,
Changgong Zhou ,
Jaroslaw Drelich  and
Randy Zahn
Edward M. Nadgorny
Affiliation:
Department of Physics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S.A.
Changgong Zhou
Affiliation:
Department of Physics, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S.A.
Jaroslaw Drelich
Affiliation:
Department of Materials Science and Engineering, and, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S.A. Engineering Research Center for Wireless Integrated Microsystems, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S.A.
Randy Zahn
Affiliation:
Department of Materials Science and Engineering, and, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S.A.
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Abstract

Two laser-based direct-write techniques to guide particles from a mist source to a target substrate by laser beams were recently developed at Michigan Tech. The laser-guided direct-write (LGDW) technique uses a hollow optical fiber, while the laser-guided microsensor patterning (LGMP) technique uses a micrometer-sized aperture. The techniques are suggested to be utilized for patterning microstructures made of nanoparticles that are either crystallized from liquid precursors or directly deposited from nanoparticle-in-liquid suspensions. The computational results based on the paraxial Fraunhofer approximation of a Gaussian beam diffracted by a circular aperture and experimental measurements of corresponding deposition rate under different conditions suggest several factors for setup optimization of LGMP. The results indicate that among the most important factors are the aperture size relative to the laser beam-waist size and the divergence of the beam near the aperture. Examples of gold-thiolate, protein-coated polystyrene, and carbon-polymer composites deposition are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 758: Symposium LL – Rapid Prototyping Technologies , 2002 , LL4.4
Copyright
Copyright © Materials Research Society 2003

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References

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