Stochastic modelling of the influence of an applied electric field on the ion recombination kinetics of multiple-ion-pair spurs in low-permittivity liquids

1993 ◽  
Vol 89 (19) ◽  
pp. 3533 ◽  
Author(s):  
Simon M. Pimblott
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
Stochastic Modelling ◽  
Ion Pair ◽  
Ion Recombination ◽  
Low Permittivity ◽  
Kinetics Of ◽  
Recombination Kinetics

A perturbation solution to the problem of Wien dissociation in weak electrolytes

1978 ◽  
Vol 359 (1698) ◽  
pp. 303-317 ◽  
Keyword(s):  
Differential Equation ◽  
Electric Field ◽  
Applied Electric Field ◽  
Pair Distribution Function ◽  
Infinite System ◽  
Perturbation Technique ◽  
Relative Increase ◽  
Ion Pair ◽  
Legendre Transform ◽  
Weak Electrolytes

The problem of Wien dissociation of a weak electrolyte in the presence of a uniform applied electric field, X , is analysed by using a perturbation technique. The partial differential equation for the ion-pair distribution function is first reduced to an infinite system of ordinary differential equations by taking the Legendre transform . Explicit expressions for the relative increase in the dissociation constant, K ( X )/ K (0), due to the applied electric field, are calculated to second order in the expansion parameter 2 βq , where β is proportional to X and q is the Bjerrum association distance. Further, by induction, the m th term of this expansion is derived. The infinite series obtained in this way for K ( X )/ K (0) is convergent for all values of βq , and when summed, agrees with a formula in terms of an ordinary Bessel function of order one, given by onasager (1934) whose derivation has been published in full.

Electric Field Assisted DNA Surface Reactions on the Sub-ms Timescale

2008 ◽  
Vol 1092 ◽  
Author(s):  
Ricardo Cabeca ◽  
D. M.F. Prazeres ◽  
V. Chu ◽  
J. P. Conde
Keyword(s):  
Electric Field ◽  
Short Duration ◽  
Applied Electric Field ◽  
Surface Reactions ◽  
Single Stranded Dna ◽  
Sio2 Surface ◽  
Voltage Pulses ◽  
On Chip ◽  
Low Amplitude ◽  
Kinetics Of

AbstractThe on-chip application of single, sub-ms voltage pulses promotes the immobilization of single stranded DNA (ssDNA) probes from a solution to a chemically functionalized SiO2 surface and as well as the hybridization between ssDNA targets from a solution to covalently immobilized ssDNA probes (E-assisted DNA reactions). Compared to diffusion-based surface reactions (in the absence of the applied electric field), an improvement of several orders of magnitude in the kinetics of the immobilization and hybridization reactions is observed with low amplitude (below 2 V) and short duration (100 ns to 1 ms) voltage pulses. E-assisted DNA reactions are demonstrated using mm-size macroelectrodes and then optimized using μm-size microelectrodes.

scholarly journals Electroadsorptive Removal of Gaseous Pollutants

2019 ◽  
Vol 9 (6) ◽  
pp. 1162 ◽  
Author(s):  
Mattia Pierpaoli ◽  
Gabriele Fava ◽  
Maria Ruello
Keyword(s):  
Activated Carbon ◽  
Electric Field ◽  
Adsorption Capacity ◽  
Adsorption Kinetics ◽  
Applied Electric Field ◽  
Carbon Cloth ◽  
Activated Carbon Cloth ◽  
Enhanced Adsorption ◽  
Electrohydrodynamic Force ◽  
Kinetics Of

Adsorption is a consequence of surface energy distribution, and the existence of electrostatic bonding suggests that the presence of an external electric field may affect adsorbate/adsorbent interactions. Nevertheless, this aspect has been poorly studied in the literature, except under non-thermal plasma or corona discharge conditions. After having demonstrated in our previous work that the adsorption kinetics of gaseous organic compounds can be enhanced by the presence of an external applied electric field, in this study, we focus on the influence of the electric field on adsorbent and adsorptive interactions. By using a commercially available activated carbon cloth, in addition to increasing the adsorbent mass transfer coefficient by virtue of the increasing intensity of the applied electric field, the results suggest that adsorbent morphology is only influenced by the formation of new surface functional groups. Moreover, enhanced adsorption kinetics and capacity may result from the electrohydrodynamic force induced by the movement of charged and neutral particles towards the adsorbent, as confirmed by the reversibility of the process. Such enhancement results in a negligible increase, of about 3%, in adsorption capacity (i.e., from 91 mmol m−2 Pa−1 for only adsorption to 94 mmol m−2 Pa−1 in the presence of the applied electric field), but also in a dramatic doubling of adsorption kinetics (i.e., from 0.09 min−1 for only adsorption to 0.19 min−1 in the presence of the applied electric field). In reality, the application of an electric field to an activated carbon cloth leads to faster adsorption kinetics, without substantially altering its adsorption capacity.

Biexponential photon antibunching: recombination kinetics within the Förster-cycle in DMSO

2016 ◽  
Vol 18 (15) ◽  
pp. 10281-10288 ◽  
Author(s):  
Michael Vester ◽  
Andreas Grueter ◽  
Björn Finkler ◽  
Robert Becker ◽  
Gregor Jung
Keyword(s):  
Ion Pair ◽  
Photon Antibunching ◽  
Kinetics Of ◽  
Recombination Kinetics

Recombination kinetics of the fully separated and the solvent separated ion-pair is deduced from biexponential photon antibunching of photoacids in DMSO.

Intelligent Gels

1999 ◽  
Vol 604 ◽  
Author(s):  
Yoshihito Osada ◽  
Jian Ping Gong ◽  
Tetsuharu Narita
Keyword(s):  
Electric Field ◽  
Shape Memory ◽  
Cationic Surfactant ◽  
Applied Electric Field ◽  
Molecular Assembly ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of ◽  
And Diffusion

AbstractWe reported an electro-driven chemomechanical hydrogel showing quick responses with worm-like motility. The principle of the motion is based on the molecular assembly reaction of cationic surfactant and negatively charged hydrogel. And direction of complexation accompanying gel contraction is controlled by changing the polarity of the applied electric field. Both thermodynamics and kinetics of surfactant binding and diffusion are investigated experimentally and theoretically. We also reported shape memory hydrogel by order-disorder transition of alkyl side chain, and some examples od friction of hydrogels showing that frictional behaviors of hydorgels do not conform to Amonton's law.

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