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Research Areas

Polymer Physics, Rheology and Processing

We are learning how dilute and entangled polymers and thread-like micelles change their configurations under flow, and we are doing this by using single-molecule imaging combined with molecular simulations. The goal is to be able to predict how polymer structure and dynamics affect flow properties. In particular, controlling long-chain branching to improve polymer processing is of great importance to the polymer industry. We are also studying high frequency and highly nonlinear dynamics of polymer chains, in solutions, melts, and glassy states. The goal is to develop predictive theories that can explain the rheological properties and design better ways of processing polymeric material. We are modeling the processing of polymers into nano fibers, using a rapidly rotating spinneret. We are also studying the interactions of charged polymers (polyelectrolytes), to determine the complexation behavior and layer-by-assembly of oppositely charged polyelectrolytes.

rjhall

Ryan Hall

PhD Student

weizhong

Weizhong Zou

PhD Student

ali

Ali Salehi

PhD Student


 

 
wenjun

Soroush Moghadam

PhD Student

NishaH

Nisha Hollingsworth

PhD Student

 

Polymer, Surfactant and Lipid Simulations

We are using atomistic and coarse-grained molecular dynamics simulation to study phase and structural transitions in lipid monolayers and bilayers. We are also studying interactions occuring in aqueous solutions of surfactant micelles and mixtures of micelles with nonionic water-soluble polymers. We are working on in silico design of polymers with improved drug release properties, and latex particles with polymers in water-borne coatings.

shihu
Taraknath Mandal

Postdoctoral Fellow

GraceT

Grace Tan

PhD Student

kyle

Kyle Huston

PhD Student

 

 
wenjun

Wenjun Huang

PhD Student

kyle

Abdulrazaq Adams

PhD Student

 

 

Micro-Hydrodynamics, Colloidal Dynamics and Mesoscopic Simulations

The goal of this research is to develop methods for simulating micro-fluid dynamics. Examples include simulations of colloidal assembly, the swimming of flagellated bacteria, and the flow of polymer molecules through micro-channels. To do this research, we are exploiting several mesoscopic simulation methods, including Brownian dynamics, Stokesian dynamics, stochastic rotation dynamics, and dissipative particle dynamics.

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rmarson

Ryan Marson

Postdoctoral Fellow

elnaz

Elnaz Hajizadeh

Postdoctoral Fellow

hossein

Hossein Rezvantalab

Postdoctoral Fellow


 

 
maziar

Maziar Mohammadi

PhD Student

Yufei

Yufei Wei

PhD Student

 






 

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