Journal ArticleDOI
Streaming currents in a single nanofluidic channel.
Reads0
Chats0
TLDR
Measurements of the streaming current, an electrical current generated by a pressure-driven liquid flow, in individual rectangular silica nanochannels down to 70 nm in height, show that it is proportional to the pressure gradient and increases with the channel height.Abstract:
We report measurements of the streaming current, an electrical current generated by a pressure-driven liquid flow, in individual rectangular silica nanochannels down to 70 nm in height. The streaming current is observed to be proportional to the pressure gradient and increases with the channel height. As a function of salt concentration, it is approximately constant below approximately 10 mM, whereas it strongly decreases at higher salt. Changing the sign of the surface charge is found to reverse the streaming current. The data are best modeled using a nonlinear Poisson-Boltzmann theory that includes the salt-dependent hydration state of the silica surface.read more
Citations
More filters
Journal ArticleDOI
Transport phenomena in nanofluidics
TL;DR: In this paper, the authors investigated the transport properties of 50-nm-high 1D nanochannels on a chip and showed that they can be used for the separation and preconcentration of proteins.
Journal ArticleDOI
Salt dependence of ion transport and DNA translocation through solid-state nanopores.
TL;DR: Experimental measurements of the salt dependence of ion transport and DNA translocation through solid-state nanopores show a three-order-of-magnitude decrease with decreasing salt concentrations from 1 M to 1 muM, strongly deviating from bulk linear behavior.
Journal ArticleDOI
Single-layer MoS2 nanopores as nanopower generators
Jiandong Feng,Michael Graf,Ke Liu,Dmitry Ovchinnikov,Dumitru Dumcenco,Mohammad Heiranian,Vishal Nandigana,Narayana R. Aluru,Andras Kis,Aleksandra Radenovic +9 more
TL;DR: A large, osmotically induced current is observed produced from a salt gradient with an estimated power density of up to 106 watts per square metre—a current that can be attributed mainly to the atomically thin membrane of MoS2, thus demonstrating a self-powered nanosystem.
Journal ArticleDOI
Power generation by pressure-driven transport of ions in nanofluidic channels.
TL;DR: The experimental study as a function of channel height and salt concentration reveals that the highest efficiency occurs when double layers overlap, which corresponds to nanoscale fluidic channels filled with aqueous solutions of low ionic strength.