MRS Proceedings

Table of Contents - Volume  1272  - Symposia KK/LL/NN/OO/PP – Integrated Miniaturized Materials-From Self-Assembly to Device Integration  

Editors : C.J. Martinez, J. Cabral, A. Fernandez-Nieves, S. Grego, A. Goyal, Q. Lin, J.J. Urban, J.J. Watkins, A. Saiani, R. Callens, J.H. Collier et al

Articles

Capillary And Magnetic Forces For Microscale Self-Assembled Systems

2010 MRS Spring Meeting.

Christopher J. Morrisa1, Kate E. Laflina2, Brian Isaacsona3, Michael Grapesa4 and David Graciasa5

a1 christopher.morris17@arl.army.mil, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland, United States

a2 klaflin1@jhu.edu, Johns Hopkins University, Chemical and Biomolecular Engineering, Baltimore, Maryland, United States

a3 brian.isaacson@arl.army.mli, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland, United States

a4 michael.grapes@arl.army.mil, U.S. Army Research Laboratory, Sensors and Electron Devices Directorate, Adelphi, Maryland, United States

a5 dgracias@scholarone.com, Johns Hopkins University, Chemical and Biomolecular Engineering, Baltimore, Maryland, United States

Abstract

Self-assembly is a promising technique to overcome fundamental limitations with integrating, packaging, and generally handling individual electronic-related components with characteristic lengths significantly smaller than 1 mm. Here we briefly summarize the use of capillary and magnetic forces to realize two example microscale systems. In the first example, we use capillary forces from a low melting point solder alloy to integrate 500 μm square, 100 μm thick silicon chips with thermally and chemically sensitive metal-polymer hinge actuators, for potential medical applications. The second example demonstrates a path towards self-assembling 3-D silicon circuits formed out of 280 μm sized building blocks, utilizing both capillary forces from a low melting point solder alloy and magnetic forces from integrated, permanent magnets. In the latter example, the utilization of magnetic forces combined with capillary forces improved the assembly yield to 7.8% over 0.1% achieved previously with capillary forces alone.

(Received April 22 2010)

(Accepted September 15 2010)

Key Words:

  • self-assembly;
  • magnetic;
  • alloy
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