Electrokinetics in nanochannels

Ion size effects on the osmotic pressure and electrocapillarity in a nanoslit: Symmetric and asymmetric ion sizes

“…2(b), the ratio of the osmotic pressures π/π is plotted against steric parameter γ , where π = π + π b andπ = (n + + n − )k B T with the bulk osmotic pressure given by Eq. (15). So the bulk pressure π b is included in both π andπ , whose effect softens the deviation from ideality.…”

“…When the length scale gets smaller down to the nanoscale of O(10 nm) comparable with the Debye length, the continuum approach is still valid, but the physics may not be the same as in the bulk [15,16]. In a nanoslit, the overlapped EDL is formed and the coions are excluded at some level from * jmo0902@gmail.com † iskang@postech.ac.kr the nanoslit.…”

Interfacial Phenomena and Fluid Control in Micro/Nanofluidics

“…Recently, nanofluidic channels have been utilized in bioseparations and preconcentrations by exploiting ion-concentration polarization in nanofluidic channels and/or at the interface between microfluidic and nanofluidic channels. [104][105][106][107][108][109][110][111][112] For example, Han et al demonstrated direct seawater desalination based on ion-concentration polarization, 113 and Manalis et al demonstrated protein preconcentration and a sensing device. 114 Furthermore, nanofluidic channels and structures have been utilized for chromatographic and electrophoretic separations.…”

Steric effect and slip‐modulated energy transfer in narrow fluidic channels with finite aspect ratios

“…The centerline concentrations and potentials, in turn, may be inter-related through channel-to-well equilibrium considerations, as outlined in [16], and is not repeated here for the sake of brevity. Considering the centerline concentration, one may write:…”