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David PINE - New York University

Programming colloidal self-assembly : Colloids with directional and DNA-mediated interactions


The self-assembly of colloids has been largely limited to spheres and rods with non-specific interactions and no directionality other than that imparted by a rod. Recently a variety of new colloidal particles have been introduced, including particles with sticky patches, dimples, cavities, and other complex shapes, that enable assembly into spectrum of new structures. Here we focus on the development of DNA-coated particles with highly specific, programmable, and thermally reversible interactions provides unprecedented control over particle assembly. Of particular interest is the ability to assemble colloidal particles made from different materials, including polymers, inorganics, and metals, into complex hybrid structures with programmed particle placement. A key recent development is the fabrication of DNA coatings that allow particles to bind and roll so that they can avoid kinetic traps and anneal into structures that minimize the free energy.

Biographie :
David J. Pine is an American physicist who has made contributions in the field of soft matter physics, including studies on colloids, polymers, surfactant systems, and granular materials. He is currently a professor and head of the department of Chemical and Biomolecular Engineering at NYU Polytechnic School of Engineering.

Pine has published over 100 articles. In 2000, his work was recognized with the Society of Rheology Publication of the Year Award. He was a Guggenheim Fellow (1999-2000) and is a Fellow of the American Association for the Advancement of Science (2000) and a Fellow of the American Physical Society (1997).

Prior to working at NYU, Pine was professor in the Chemical Engineering Department and the Materials Department at the University of California, Santa Barbara (UCSB) for 10 years ; he served as chair of the Chemical Engineering Department from 2001 to 2004. He also worked as a research scientist at Exxon Corporate Research in Annandale, NJ and previously was on the physics faculty at Haverford College near Philadelphia. Pine received his B.S. in Physics and Mathematics in 1975 from Wheaton College, and his Ph.D. in Physics in 1982 at Cornell University.

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