Results 211 to 220 of about 9,414 (255)
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Nonstraight Nanochannels Transfer Water Faster Than Straight Nanochannels
The Journal of Physical Chemistry B, 2015Understanding the flow of liquids and particularly water in nanochannels is important for scientific and technological applications, such as for filtration and drug delivery. Here we perform molecular dynamics simulations to investigate the transfer of single-file water molecules across straight or nonstraight single-walled carbon nanotubes (SWCNTs ...
T, Qiu, X W, Meng, J P, Huang
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Nanochannels Preparation and Application in Biosensing
ACS Nano, 2012 Selective transport in nanochannels (protein-based ion channels) is already used in living systems for electrical signaling in nerves and muscles, and this natural behavior is being approached for the application of biomimetic nanochannels in biosensors.
Alfredo de la Escosura-Muñiz +1 more
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Nanochannel Gradient Separations
2018Gradient-based electrophoretic separations enable simultaneous separation and concentration of molecules. Compared with conventional injection-based separations, they enable enrichment of low-concentration analytes from larger sample volumes that are not limited by an injection volume.
Michael A, Startsev, David W, Inglis
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Enantioselective Antiport in Asymmetric Nanochannels
ACS Nano, 2021Enantioselective sensing and separation are major challenges. Nanochannel technologies are energy-saving and efficient for membrane separation. Herein, inspired by biological antiporter proteins, artificial nanochannels with antiporter behavior were fabricated for chiral sensing and separation.
Siyun Zhang +4 more
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Electrocavitation in Nanochannels
2013A novel method has been developed to cavitate aqueous solutions, which is called electrocavitation. An axial voltage is applied in a nanochannel containing an aqueous solution with a stepwise conductivity gradient. A combination of electrical and viscous forces then generates a tension in the solution which, at sufficiently low pressures, causes it to ...
Daniel S. van Schoot +4 more
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Electrophoresis in Nanochannels
Volume 2: Fora, 2006Micro- and nanofabrication technology enables the application of electrokinetics as a method of performing chemical analyses and achieving liquid pumping in electronically-controlled microchip systems with no moving parts. We are studying and leveraging the unique separation modalities offered by nanoscale electrokinetic channels. We report analytical,
Sumita Pennathur +4 more
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Theory of diffusioosmosis in a charged nanochannel
Physical Chemistry Chemical Physics, 2018We probe the diffusioosmotic transport in a charged nanofluidic channel in the presence of an applied tangential salt concentration gradient.
Haoyuan Jing, Siddhartha Das
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Electropreconcentration with Charge-Selective Nanochannels
Analytical Chemistry, 2008We report on the systematic investigation of electropreconcentration phenomena in hybrid micro/nanofluidic devices. The competition between the electroosmotic dragging force and the highly nonlinear electrophoretic forces induced by the polarization effect is responsible for four preconcentration regimes within such structures that can arise at both ...
Adrien, Plecis +3 more
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Ionic Selectivity of Single Nanochannels
Nano Letters, 2008There has been an increasing interest in single nanochannel ionic devices, such as ionic filters that control the type of transported ions and ionic diodes that rectify the ionic flow. In this article, we theoretically investigate the importance of the dimensions, surface charge, electrolyte concentration, and applied bias on nanopore performance.
Ivan, Vlassiouk +2 more
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Molecular Jamming in Tortuous Nanochannels
The Journal of Physical Chemistry Letters, 2019Ultrathin nanostructured membranes are widely pursued to apply into different processes ranging from air separation to seawater desalination. Here, freestanding carbon nanomembranes (CNMs) are employed to dehydrate vaporous alcohols at room temperature. The structure of the microporous material is addressed by measuring permeation rates of homologous n-
Petr Dementyev +3 more
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