Colloids

Measurement of Diffusiophoretic Velocities of Colloidal Particles

Diffusiophoresis is the motion of colloidal or microscopic particles under the influence of a concentration gradient of smaller molecules. Recently, we have shown that a diffusiophoretic motion of colloidal particles can lead to increased mass transfer. Such enhancements may help in better and efficient contacting for chemical reactions, particularly in microreactors. Thus far there were no reliable measurements of diffusiophoretic velocities, particularly of colloidal particles.  read more »

Proposing Faculty
Research Area
  • Colloids
  • Heat and Mass Transfer

Liposomal Drug Delivery System

Stationary Phase Interdiffusion is a new technique to make liposomes of uniform diameter. Currently adopted methods for encapsulating drugs using this method is very inefficient (less than 5%), whereas it can theoretically be as high as 80%). This study will focus on improving the encapsulation efficiency by first understanding the reasons of poor efficiency, and adopting techniques used elsewhere to increase the efficiency of encapsulation. The study will be potentially be carried out in collaboration with a pharma industry, with a possibility of carrying out an internship there.

Proposing Faculty
Research Area
  • Colloids
  • Drug Delivery
  • Nanoparticles
  • Product Development
  • Surfactants

Film formation and anti-microbial studies of nano-composite coatings (Joint supervision with Prof. Mahesh Tirumkudulu)

Preventing or
inhibiting the growth of micro-organisms on surfaces is of prime importance in
the healthcare and textile industries. A promising strategy to overcome
microbial growth involves coating the surfaces with materials that can provide
resistance to microbial colonization. Inorganic nano materials and organic
materials with inorganic inclusions are being widely used as anti-microbial  read more »

Proposing Faculty
Research Area
  • Coatings
  • Colloids

The phase behavior of connected hard and soft particles.

A surprising new development in materials science and chemical engineering is the finding that mixtures of hard (colloidal), and soft (polymeric, or micellar) particles can self organize in length scale much larger than the diameter of either species.  In this project we explore the behavior of connected hard- and soft particles.  An elementary knowledge of coding is sufficient.

Proposing Faculty
Research Area
  • Biomaterials
  • Colloids
  • Molecular Simulations
  • Nano-composites
  • Nanoparticles
  • Polymer Physics
  • Statistical Themodynamics
  • Surface Science

The role of impurities in the self-assembly of polymer-grafted nanoparticles.

Traditionally, self-assembled structures are formed using chemical differences within a species.  Examples of this are the formation of micelles by detergents, and the formation of the phospholipid bilayer of the cell membrane.  In these systems, it is the tendency to the hydrophobic and hydrophilic part to avoid each other that result in the  self-assembled state.  However, a recent study (http://pubs.rsc.org/en/content/articlehtml/2017/sm/c7sm00230k) has pointed out that it is possible to form self-assembled states without any chemical differences.  This project focuses on how the prese  read more »

Proposing Faculty
Research Area
  • Colloids
  • Molecular Simulations
  • Nano-composites
  • Nanoparticles
  • Polymer Physics
  • Statistical Themodynamics

The role of shape in the self-assembly of polymer-grafted nanoparticles.

Traditionally, self-assembled structures are formed using chemical differences within a species.  Examples of this are the formation of micelles by detergents, and the formation of the phospholipid bilayer of the cell membrane.  In these systems it is the tendency to the hydrophobic and hydrophilic part to avoid each other that result in the self-assembled state.  However, a recent study (http://pubs.rsc.org/en/content/articlehtml/2017/sm/c7sm00230k) has pointed out that it is possible to form self-assembled states without any chemical differences.  Rather, it is possible to form such stru  read more »

Proposing Faculty
Research Area
  • Colloids
  • Nano-composites
  • Nanoparticles
  • Polymer Physics
  • Statistical Themodynamics

Thermodynamic study of polymer-grafted nanoparticle composites.

Grafting polymer to the surface of nanoparticles can result in enormous property enhancements.  This project involves the study of thermodynamic properties of such composite systems.  The topic lies in the area of polymer physics.  The work involved, is the usage of simple statistical mechanical arguments and simulation packages to confirm the statistical mechanical predictions.  An introductory level exposure to programming should suffice.

Proposing Faculty
Research Area
  • Colloids
  • Molecular Simulations
  • Nano-composites
  • Nanoparticles
  • Polymer Physics
  • Surfactants

Lithium Ion Battery - modeling and design

The project will focus on preparation of electrode coatings for lithium ion batteries. Interested student may meet us for details.

Proposing Faculty
Research Area
  • Coatings
  • Colloids
  • Energy Integration
  • Heat and Mass Transfer
  • Nanoparticles
  • Rheology

Discrete Element Method (DEM) simulation for structure of fractal aggregates and their hydrodynamic properties

A simulation project for estimating mobility of nano-particle aggregates. These are looslely packed, non-spherical fluffy structures formed during processes such as synthesis of catalyst particles, transport of nano-particle slurries, transport of pollutants, etc..  read more »

Proposing Faculty
Research Area
  • Aerosols
  • Climate Change
  • Colloids
  • Computational Flow Modelling (CFD)
  • Fluid Mechanics and Stability
  • Molecular Simulations
  • Nanoparticles
  • Pollution
  • Reactor Modelling
  • Rheology

Jamming of Colloidal Suspensions

Pressure driven flows of colloidal suspensions through small openings often seal the constriction. Any further flow of fluid is blocked. Time taken for jamming and effectiveness of the seal depend on particle size, concentration, particle elastic modulus, etc.. The project will include experiments, modeling and/or simulations to understand this phenomenon.

Proposing Faculty
Research Area
  • Colloids
  • Fluid Mechanics and Stability
  • Porous Media
  • Rheology