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Subfeature patterning of organic and inorganic materials using robotic assembly

Published online by Cambridge University Press:  31 January 2011

Afshin Tafazzoli ,
Chao-Min Cheng ,
Chytra Pawashe ,
Emily K. Sabo ,
Lacramioara Trofin ,
Metin Sitti  and
Philip R. LeDuc
Afshin Tafazzoli*
Affiliation:
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Chao-Min Cheng*
Affiliation:
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Chytra Pawashe
Affiliation:
Department of Mechanical Engineering and Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Emily K. Sabo
Affiliation:
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Lacramioara Trofin*
Affiliation:
Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Metin Sitti*
Affiliation:
Department of Mechanical Engineering and Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Philip R. LeDuc*
Affiliation:
Departments of Mechanical Engineering, Biomedical Engineering, and Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
*
a)These authors contributed equally.
a)These authors contributed equally.
b)Present address: NanoDynamics Life Sciences, Inc., Pittsburgh, PA 15219.
c)Address all correspondence to these authors. e-mail: [email protected]
d)e-mail: [email protected]
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Abstract

The ability to create small-scale material patterns using lithography has been limited by the feature sizes and assembly of the master stamping system. Developing a simple and robust robotically automated patterning technique for both organic and inorganic materials, which is able to be actively controlled down to scales smaller than the operating features, would enable new capabilities and directions in research. Here, a novel method is presented to form patterns of defined shape and distribution via automated assembly along with force-controlled microstamping. Robotic assembly based particle templates and pyramid structures were used to create controlled distributions of materials. Systems including quantum dots and biomolecules were patterned, demonstrating our ability to create repeatable geometries with size scales smaller than the master stamping system. These patterns were also utilized for constraining cell adhesion and spreading. This work has potential applications in diverse areas from building molecular circuits to probing biological pattern formation.

Keywords

BiomaterialMicroelectro-mechanical (MEMS)Microstructure
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 6 , June 2007 , pp. 1601 - 1608
Copyright
Copyright © Materials Research Society2007

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References

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