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Jonathan Posner gave an invited talk and Jeff Moran presented a poster at the microfluidics GRC in Waterville Valley, NH. They both presented work on electrokinetic locomotion of catalytic nanomotors.

http://cheme.stanford.edu/events/colloquia.html

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

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, …

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 …

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 …