287 citations · 336 across the 10 of their papers we have counts for
11 papers
Taylor dispersion in arbitrarily shaped axisymmetric channels
Ray Chang, Juan G. Santiago
Advective dispersion of solutes in long thin axisymmetric channels is important to the analysis and design of a wide range of devices, including chemical separation systems and mic…
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…
Capacitive Deionization -- defining a class of desalination technologies
P. M. Biesheuvel, M. Z. Bazant, R. D. Cusick +17
Over the past decade, capacitive deionization (CDI) has realized a surge in attention in the field of water desalination and can now be considered as an important technology class,…
Isotachophoresis applied to chemical reactions
Charbel Eid, Juan G. Santiago
This review discusses research developments and applications of isotachophoresis (ITP) to the initiation, control, and acceleration of chemical reactions, emphasizing reactions inv…
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…
Sensitivity analysis and study of the mixing uniformity of a microfluidic mixer
Benjamin Ivorra, Juana López Redondo, Ángel M. Ramos +1
We consider a microfluidic mixer based on hydrodynamic focusing, which is used to initiate the folding process of individual proteins. The folding process is initiated by quickly d…