287 citations · 336 across the 10 of their papers we have counts for
7 papers · 1 filter
Liquid Heterostructures: Generation of Liquid-Liquid Interfaces in Free-Flowing Liquid Sheets
David J. Hoffman, Hans A. Bechtel, Diego A. Huyke +3
Chemical reactions and biological processes are often governed by the structure and transport dynamics of the interface between two liquid phases. Despite their importance, our mic…
Microfluidic Isotachophoresis: Theory and Applications
Ashwin Ramachandran, Juan G. Santiago
Isotachophoresis (ITP) is a versatile electrophoretic technique which can be used for sample preconcentration, separation, purification, mixing, and control and acceleration of che…
Frequency analysis and resonant operation for efficient capacitive deionization
Ashwin Ramachandran, Steven A. Hawks, Michael Stadermann +1
Capacitive deionization (CDI) performance metrics can vary widely with operating methods. We here develop a theory around and experimentally demonstrate a new operation for CDI tha…
Performance Metrics for the Objective Assessment of Capacitive Deionization Systems
Steven A. Hawks, Ashwin Ramachandran, Slawomir Porada +5
In the growing field of capacitive deionization (CDI), a number of performance metrics have emerged to describe the desalination process. Unfortunately, the separation conditions u…
Thermodynamics of Ion Separation by Electrosorption
Ali Hemmatifar, Ashwin Ramachandran, Kang Liu +3
We present a simple, top-down approach for the calculation of minimum energy consumption of electrosorptive ion separation using variational form of the (Gibbs) free energy. We foc…
Tailored Porous Electrode Resistance for Controlling Electrolyte Depletion and Improving Charging Response in Electrochemical Systems
James W. Palko, Ali Hemmatifar, Juan G. Santiago
The rapid charging and/or discharging of electrochemical cells can lead to localized depletion of electrolyte concentration. This depletion can significantly impact the system's ti…
Nitrate removal from water using electrostatic regeneration of functionalized adsorbent
James W. Palko, Diego I. Oyarzun, Byunghang Ha +2
Nitrate is an important pollutant in drinking water worldwide, and a number of methods exist for the removal of nitrate from water including ion exchange and reverse osmosis. Howev…