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21 February 2011 Microfabrication by optical tweezers
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Abstract
A new method to fabricate microstructures built by polymer microparticles using a bottom-up technique is presented. The microstructures find broad application in micro-fluidics technology, photonics and tissue-engineering. The handling of the particles is realized by a holographic optical tweezers setup, ensuring the precise allocation of the particles to the desired structure. A biochemical technique ensures that the structure remains stable independent of the laser source. We show that with this method complex two-dimensional durable structures can be assembled and cannot be separated by optical forces. The structures are extendable during the entire fabrication process and can be linked to further particles and structures as desired.
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R. Ghadiri, T. Weigel, C. Esen, and A. Ostendorf "Microfabrication by optical tweezers", Proc. SPIE 7921, Laser-based Micro- and Nanopackaging and Assembly V, 792102 (21 February 2011); https://doi.org/10.1117/12.887264
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