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Dvora Perahia

Picture of Dvora Perahia Professor
Physical Chemistry

Phone: (864) 656-7703
Office: 267 Hunter Laboratories
E-mail: dperahi@clemson.edu

Research Interests | Publications | Research Group

Dr. Perahia earned her B.Sc. from the Hebrew University in 1981.  Her M.Sc. (1984) and Ph.D. (1991), awarded from the Weizmann Institute of Science with Professor Zeev Luz, focused on NMR in soft materials. After graduating she specialized in polymer physics, first with Dr. Jacob Klein at the Weizmann institute (1991-1992),  and then with Dr. Sunil K. Sinha at Exxon R&E in New Jersey (1992-1996), focusing on resolving forces and structure of polymers and complex fluids, with X-rays. She spent an additional year at the Physics Department, Princeton University before joining the Chemistry Department, Clemson University in 1997. Dr. Perahia is also a member of the Physics Department, and was awarded an honorary position at the Beijing University of Chemical Technology in Beijing, China. Dr. Perahia became a fellow of the American Physical Society in 2013.

Research Interests

Dr. Perahia’s research is an interdisciplinary effort to correlate the chemistries of polymers and complex fluids with their structure and dynamics that enable a large range of technologies from drug delivery and bio-sensors to clean energy and nano electronics. The research group has an experimental and computational sub groups with some individuals involved in both.  The main focus areas  are:

a)  Polymers and Complex Fluids for Clean Energy Applications 

b) Nanoparticles and Assemblies of Light Emitting/Absorbing Polymers

c) Fluorine Mediated Controlled Assemblies of Nanoparticles and Polymers

 

Experimental Studies The experimental study incorporated physical and analytical components. X-ray and neutron scattering are used to probe the structure of these systems and quasi elastic neutron and X-ray techniques coupled with NMR are used to probe the motion of the molecules.

Computational Studies Classical large scale molecular dynamics simulations are used to obtain the forces and structure and motion of polymers and complex fluids.  Coarse grained models are developed to enable probing the slow motion that characterizes polymers.

For Students The students in the polymer chemistry-physics group acquire in depth expertise in polymers and complex fluids. The experimental students acquire in-depth experience in a broad range of analytical techniques. The computational students acquire the knowledge of use and development of molecular dynamic codes and their applications to soft materials. 

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Publications

Etampawala, T.; Osti, N. C.; Aryal, D.; He, L.; Heller, W. T.; Willis, C. L.; Grest, G. S.; Perahia, D., Association of a Multifunctional Ionic Block Copolymer in a Selective Solvent. Journal of Chemical Physics 2016, 145 (in press).

Maskey, S.; Osti, N. C.; Perahia, D.; Grest, G. S., Dynamics of Polydots: Soft Luminescent Polymeric Nanoparticles. Macromolecules 2016, 49, 2399−2407.

Maskey, S.; Lane, J. M. D.; Perahia, D.; Grest, G. S., Structure of Rigid Polymers Confined to Nanoparticles: Molecular Dynamics Simulations Insight. Langmuir 2016, 32, 2102-2109.

Wijesinghe, S.; Maskey, S.; Perahia, D.; Grest, G. S., Conformation of Ionizable Poly Para Phenylene Ethynylene in Dilute Solutions. Journal of Polymer Science Part B Polymer Physics 2016, 54, 582-588.

Agrawal, A.; Perahia, D.; Grest, G. S., Cluster Morphology-Polymer Dynamics Correlations in Sulfonated Polystyrene Melts: Computational Study. Physical review letters 2016, 116, 158001.

Cheng, G.; Perahia, D., Dewetting and Microphase Separation in Symmetric Polystyrene‐Block‐Polyisoprene Diblock Copolymer Ultrathin Films. Polymer International 2016, 39-47.

Salerno, K. M.; Agrawal, A.; Perahia, D.; Grest, G. S., Resolving Dynamic Properties of Polymers through Coarse-Grained Computational Studies. Physical review letters 2016, 116, 058302.

Ratnaweera, D. R.; Mahesha, C.; Zumbrunnen, D. A.; Perahia, D., In Situ Self Assembly of Nanocomposites: Competition of Chaotic Advection and Interfacial Effects as Observed by X-Ray Diffreaction. Nanomaterials 2015, 5, 351-365.

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