a. Charged surfaces, EDL theory and electrokinetics
In this topic, we explore the behavior of nanoscale charged surfaces and the transport and liquids and ions (through electrokinetics) triggered by the interactions of these surfaces with liquids and ions. The applications of the topic range from better exploiting nanoscale physics for augmented nanoscale transport to developing nanoscale devices for biomedical and chemical applications.
Involved Graduate Students (Present): Harnoor Singh Sachar, Vishal Sankar Sivasankar, Sai Ankit Etha
Involved Graduate Students (Past): Shayandev Sinha
Collaborators: Prof. Thomas Thundat (University of Alberta)
Related recent publication
- H. Jing# and S. Das*, “Theory of diffusioosmosis in a charged nanochannel.” Physical Chemistry Chemical Physics, 20, 10204-10212 (2018).
- S. Sinha#, L. Myers#, and S. Das*, “Effect of solvent polarization on electroosmotic transport in a nanofluidic channel.” Microfluidics and Nanofluidics, 20, 119 (2016).
- J. Liu, R. Giakwad, A. Hande, S. Das, and T. Thundat, “Mapping and quantifying surface charges on clay nanoparticles.” Langmuir, 31, 10469-10476 (2015).
- R. Gaikwad, A. Hande, S. Das, S. K. Mitra, and T. Thundat, “Determination of charge on asphaltene nano-aggregates in air using electrostatic force microscopy”. Langmuir, 31, 679 (2015).
- S. Das*, S. Chanda#, J. C. T. Eijkel, N. R. Tas, S. Chakraborty, and S. K. Mitra, “Filling of charged cylindrical capillaries”. Physical Review E, 90, 043011 (2014).
b. Oil-water interfaces
In this topic, we explore the behavior oil-water interfaces with applications in enhanced oil recovery, formation of stabilized emulsions, remediation of oil spills.
Involved Graduate Students (Past): Shayandev Sinha
Collaborators: Prof. Thomas Thundat (University of Alberta)
Related recent publication
- M. Razi, S. Sinha#, P. R. Waghmare, S. Das*, and T. Thundat, “Effect of Steam-Assisted Gravity Drainage (SAGD) produced water properties on oil/water transient interfacial tension.” Energy and Fuels (DOI: 10.1021/acs.energyfuels.6b01686) (2016).
- S. Sinha#, K. I. Bae#, and S. Das*, “Electric Double Layer effects in water separation from water-in-oil emulsions.” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 489, 216-222 (2016).
- S. Sinha#, K. A. Mahmoud, and S. Das*, “Conditions for spontaneous oil-water separation with oil-water separators.” RSC Advances, 5, 80184-80191 (2015).
c. Air-Water Interface
In this topic, we study the ion behavior at air-water interface. The findings have applications in better understanding a large number of phenomena dictated by ion adsorption at the air-water interface (formation of acid rain, formation of polluted marine boundary layers, etc.)
Involved Graduate Students (Present): Yanbin Wang