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Brownian Transport Through Modulated Potential Energy Landscapes

Brownian Transport Through Modulated Potential Energy Landscapes David G. Grier, New York University, DMR-0451589. Assembly of 3D Quasicrystalline Photonic Heterostructures.

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Brownian Transport Through Modulated Potential Energy Landscapes

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  1. Brownian Transport Through Modulated Potential Energy Landscapes David G. Grier, New York University,DMR-0451589 Assembly of 3D Quasicrystalline Photonic Heterostructures Optimized holographic optical traps (HOT)organize nanometer-scale objects into arbitrary structures. The top images show microscopic spheres organized into an icosahedron, the fundamental building block of the 3D icosahedral quasicrystal shown below. Quasicrystals' exotic symmetries endow such heterostructures with full photonic bandgaps, which enables them to manipulate light much like semiconductors manipulate electrons. HOT processing provides a previously lacking avenue for creating 2D and 3D photonic heterostructures, including the waveguide integrated into an octahedral quasicrystal shown here. Holographic assembly of photonic circuits requires just seconds. Grier & Roichman, Opt. Express13, 5434 (2005)

  2. Brownian Transport Through Modulated Potential Energy Landscapes David G. Grier, New York University,DMR-0451589 Broader Impact: Holographic optical trapping, developed with DMR support, offers unprecedented control over the mesoscopic world. Applications range from surgery within living cells to to rapidly sorting fluid-borne objects with unparalleled selectivity. This award-winning technology has been commercialized and is being rapidly adopted for a wide range of industrial applications, including manufacturing of photonic devices. Education: Five undergraduate REU students (Andrea Martin, Karen Kasza, Meeri Kim, Emily Gardel and Alex Waldron) contributed to this program. Three currently are graduate students in physics, one is a senior at Smith College and another is a sophomore at Harvard. Of the graduate students who pioneered this technique, Jennifer Curtis, Brian Koss, and Kosta Ladavac are postdocs at Heidelberg, NRL and Schlumberger, respectively. Eric Dufresne is an assistant professor at Yale and Pamela Korda is a senior scientist at Arryx, Inc. A postdoc (Yael Roichman), two graduate students and an undergraduate are currently involved in this program.

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