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micro/nanoassembly

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Manufacturing of two and three-dimensional micro/nanostructures by integrating optical tweezers with chemical assembly
Kenneth Castelino, Srinath Satyanarayana, Metin Sitti
Journal:

Robotica / Volume 23 / Issue 4 / July 2005

Published online by Cambridge University Press:

14 June 2005, pp. 435-439
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Optical tweezers have been used as versatile tools for non-contact manipulation of micrometer-sized entities. This paper proposes a hybrid micro/nanoscale manufacturing system using optical tweezers and chemical linkages for fabricating 2D and 3D micro/nanostructures. A holographic multiple trap optical tweezers system is first used to trap particles in a desired pattern. The particles are then connected to form rigid units using suitable chemistry. Connection schemes based on gold seeding, complementary-DNA linkage and streptavidin-biotin chemistry are presented and possible applications of this technique are explored. This method combines the advantages of top-down and bottom-up approaches and is compatible with organic and inorganic materials.