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Philip Wheat defends his dissertation.

Congrats to Philip Wheat and his family. Philip successfully defended his dissertation entitled “Collective behavior of swimming bimetallic motors in chemical concentration gradients.”

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Wen-Che, Charlie, and Babak Present Posters at SRC/Sematech Annual Meeting

Our group is partially funded by the SRC/Sematech funded ERC at University of Arizona. Our project focuses on the environmental and health and safety of engineered nanomaterials. Wen-che, Charlie and Babak are presenting our work on using artificial cell membranes for predicting the bioaccumulation and toxicity potential of engineered nanomaterials.

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Moran publishes paper on catalytic nanomotors in the Journal of Fluid Mechanics

Abstract: Mitchell originally proposed that an asymmetric ion flux across an organism’s membrane could generate electric fields that drive locomotion. Although this locomotion mechanism was later rejected for some species of bacteria, engineered Janus particles have been realized that can swim due to ion fluxes generated by asymmetric electrochemical reactions. Here we present governing equations,… Read more »

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Jeff Moran selected as CNS-FSE Fellow.

It is no surprise that the world of nanoscale science and engineering (NSE) is expanding at a very fast rate given the efforts being made to improve human health, clean up the environment, and provide security, among other initiatives. Challenges also arise in understanding and appreciating how the intended and unintended consequences of such NSE… Read more »

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Moran and Wheat publish in PRE

Jeff Moran and Philip Wheat publish paper on electrokinetic locomotion in Physical Review E. Bimetallic rod-shaped nanomotors swim autonomously in hydrogen peroxide solutions. Here we present a scaling analysis, computational simulations, and experimental data that show that the nanomotor locomotion is driven by fluid slip around the nanomotor surface due to electrical body forces. The… Read more »

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Kamil Salloum published paper on microfluidic fuel cell stacks in Journal of Power Sources

Abstract: A membraneless microfluidic fuel cell stack architecture is presented that reuses reactants from one cell to a subsequent one, analogous to PEMFC stacks. On-chip reactant reuse improves fuel utilization and power densities relative to single cells. The reactants flow separately through porous electrodes and interface with a non-reacting and conductive electrolyte which maintains their… Read more »