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Seminar 10/12/11 - Alexander Neimark, Rutgers: Breathing Crystals:Adsorption-Induced Deformation&Structural Transitions in Metal-Organic Frameworks

Bio: Dr. Alexander V. Neimark is a Professor II (Distinguished Professor) of Chemical and Biochemical Engineering at Rutgers University. He is a representative of the Russian school of colloid and interface science. He received the M.S. in Mechanical Engineering, the Ph.D. in Chemical Engineering, and the D.Sc. in Physical Chemistry at the Moscow State University, and then worked at the Institute of Physical Chemistry of Russian Academy of Sciences. Prior to joining Rutgers in 2006, he served as a Research Director of TRI/Princeton in 1996-2006, and held visiting positions in the University of Mainz, Germany, CNRS, France, and Yale University. He is a recipient of a number of national and international awards and honored appointments, including Humboldt, Guggenheim, and Blaise Pascal Fellowships. He wrote the monograph "Multiphase Processes in Porous Media" and 190+ scientific papers.

Dr. Neimark research interests include thermodynamics and molecular modeling of nanophases and characterization of nanoporous and fibrous materials. He has developed new theoretical and multiscale simulation methods to study interfacial equilibria and transport in nanoscale systems, some of which have already found practical applications.

Abstract: Phenomenon of adsorption-induced deformation attracted recently a considerable attention owing to its relevance to practical problems of mechanical stability and integrity of novel nanoporous materials and their adsorption properties. Nanoporous materials find numerous applications as selective adsorbents and catalysts, substrates for biosensors and drug delivery, membranes and films in various nanotechnologies, which involve fluids adsorbed or confined to nanoscale pores within rigid or compliant solid matrixes. Guest molecules adsorbed in nanopores cause a substantial stress in the host matrix leading to its contraction or swelling depending on the specifics of host-guest interactions. Although various experimental manifestations of adsorption-induced deformation have been known for a long time, a rigorous theoretical description of this phenomenon is lacking. I will present a general thermodynamic approach to predicting adsorption stress and respective deformation in various microporous and mesoporous materials based on molecular models of adsorption within elastic nanoscale confinements [1-9].

All seminars are held on Wednesdays from 12:00 noon-1:00 p.m. in the Bowen Hall Auditorium Room 222. A light lunch is provided at 11:30 a.m. in the Bowen Hall Atrium immediately prior to the seminar.

Location: Bowen Hall Atrium

Date/Time: 10/12/11 at 12:00 pm - 10/12/11 at 1:00 pm

Category: PRISM/PCCM Seminar Series

Department: PRISM