Electrochemomechanical energy conversion efficiency in curved rectangular nanochannels

Electrokinetic energy conversion of electro-magneto-hydro-dynamic nanofluids through a microannulus under the time-periodic excitation

“…They vary depending on many of the dimensionless parameters defined above. In order to obtain meaningful results, the actual range of these dimensionless parameters should be provided according to the relevant physical variables, as shown below [22,38,40,43] : = 100 µm,…”

“…Ren and Stein [21] analyzed the energy conversion problem in micropipes based on slip theory. Liu et al [22] investigated the electrochemical mechanical energy conversion efficiency in curved rectangular nanochannels. The results show that within a certain range of parameters, the EKEC efficiency of the curved rectangular nanochannel is 1.17 times larger than that of the straight rectangular nanochannel.…”

Blue energy generation by the temperature-dependent properties in funnel-shaped soft nanochannels

“…This aspect has compelled researchers to develop several sustainable methods for harvesting nonconventional energy in recent years over disparate system scales. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Non-conventional energy generation from sources such as biomass, solar, waves, hydro, wind, and salinity gradient energy, as an important topic in the 21st century, has received significant attention as a clean energy source. [16][17][18][19][20][21] Among many such sources, the salinity gradient energy resulting from Gibbs energy of mixing, which is generated by combining liquids that have different concentrations like sea and river water, holds a promising capability of high-potential electricity generation due to its abundance.…”

“…[65][66][67] When ion transport in nano and microchannels is driven by thermal gradients, the effect is actually similar to a streaming potential, which can be measured using the principle of the Soret effect essentially to analyze the effect of ionic motion during temperature gradients. 1 Long et al have shown that a counter-diffusion temperature gradient enhances the membrane potential and the electrical efficiency of thermally insulated nanochannels, thus enhancing ion selectivity. 5,68 Karimzadeh et al 69 explored the improvement in ion selectivity when the temperature and concentration gradients are applied in opposite directions, mainly attributed to the temperature-dependent properties of ionic transport in conical soft nanochannels.…”

Realization of Curved Circular Nanotubes Using In Situ Monitored Self-Assembly

“…Diverse shapes of micro- and nanofluidic channels have been studied for various applications, such as biological testing, , clinical diagnosis, , environmental analysis, drug synthesis, , and energy generation. , In particular, curved (arc on xy -plane) microfluidic channels have been extensively investigated since they increase the effective channel length per unit chip length in the flow direction. Simultaneously, a curved microchannel induces a centrifugal force that drives a transverse secondary flow (Dean vortices), which plays a crucial role in cell separation, fluid mixing, and target particle trapping. − Unlike the micro one, the curved nanochannel exhibits several distinctive properties because of its small feature size, such as higher energy conversion, molecular interaction, and ion transportation . Furthermore, if the channel cross-section is circular instead of the common rectangular one in most micro- and nanofluidic channels, it can eliminate the corner effect that creates nonuniform pressure distributions at the corners of the channel .…”