Joseph S. – TechConnect Briefs

Multiscale Computation of Fluid and Ion Transport in Nanochannels: The Effect of Partial Charges

Joseph S., Chatterjee A.N., Aluru N.R., Beckman Institute of Advanced Science and Technology, US

We demonstrate a hierarchical multiscale methodology to solve ion transport in nanoscale channels and show that the partial charges from quantum calculations significantly alter transport properties and I-V plots for electrolytes in confined geometries. Effects [...]

Ion Channel Based Biosensors: Ionic transport in carbon nanotubes

Joseph S., Mashl R.J., Jacobsson E., Aluru N.R., Beckman Institute of Advanced Science and Technology, US

Transport of molecules through macromolecular pores is of considerable importance in many biological and nano-electromechanical systems. Ion channels found in cell membranes are crucial for shaping electrical signals and controlling flow of ions and fluids [...]

Water Ordering by Confinement in Carbon Nanotubes at 300K: Implications for possible design of proton-conducting nano-semiconductors

Mashl R.J., Joseph S., Aluru N.R., Jakobsson E., University of Illinois, US

Molecular dynamics (MD) simulations suggest that water readily enters carbon nanotubes. This is also suggested by the fact that fluorescence in nanotubes is affected by the pH of external electrolyte. Distinctive symmetrical water structures emerge [...]