Molecular dissociation and proton transfer in aqueous methane solution under electric field.

2021 ◽  
Author(s):  
Giuseppe Cassone ◽  
Jiri Sponer ◽  
Franz Saija
Keyword(s):  
Solar System ◽  
Electric Field ◽  
Proton Transfer ◽  
Computational Studies ◽  
Molecular Dissociation ◽  
The Subject

Methane-water mixtures are ubiquitous in our Solar System and they have been the subject of a wide variety of experimental, theoretical, and computational studies aimed at understanding their behaviour under...

From Dust to Life

2017 ◽  
Author(s):  
John Chambers ◽  
Jacqueline Mitton
Keyword(s):  
Solar System ◽  
Extrasolar Planets ◽  
Planetary Systems ◽  
History Of Astronomy ◽  
Human Origins ◽  
History Of ◽  
The Subject ◽  
Emergence Of Life

The birth and evolution of our solar system is a tantalizing mystery that may one day provide answers to the question of human origins. This book tells the remarkable story of how the celestial objects that make up the solar system arose from common beginnings billions of years ago, and how scientists and philosophers have sought to unravel this mystery down through the centuries, piecing together the clues that enabled them to deduce the solar system's layout, its age, and the most likely way it formed. Drawing on the history of astronomy and the latest findings in astrophysics and the planetary sciences, the book offers the most up-to-date and authoritative treatment of the subject available. It examines how the evolving universe set the stage for the appearance of our Sun, and how the nebulous cloud of gas and dust that accompanied the young Sun eventually became the planets, comets, moons, and asteroids that exist today. It explores how each of the planets acquired its unique characteristics, why some are rocky and others gaseous, and why one planet in particular—our Earth—provided an almost perfect haven for the emergence of life. The book takes readers to the very frontiers of modern research, engaging with the latest controversies and debates. It reveals how ongoing discoveries of far-distant extrasolar planets and planetary systems are transforming our understanding of our own solar system's astonishing history and its possible fate.

Electric field-driven acid-base transformation: proton transfer from acid(HBr/HF) to base(NH3/H2O)

2015 ◽  
Vol 31 (3) ◽  
pp. 418-426 ◽  
Author(s):  
Hailong Liang ◽  
Baojie Chai ◽  
Guanghui Chen ◽  
Wei Chen ◽  
Sheng Chen ◽  
...  
Keyword(s):  
Electric Field ◽  
Proton Transfer ◽  
Acid Base

scholarly journals A Molecular Dynamic Simulation of Hydrated Proton Transfer in Perfluorosulfonate Ionomer Membranes (Nafion 117)

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Hong Sun ◽  
Mingfu Yu ◽  
Zhijie Li ◽  
Saif Almheiri
Keyword(s):  
Electric Field ◽  
Proton Transfer ◽  
Molecular Dynamic Simulation ◽  
Water Content ◽  
Molecular Dynamic ◽  
Dynamic Simulation ◽  
Molecular Diffusion ◽  
Free Water ◽  
Interaction Force ◽  
Hydrated Ion

A molecular dynamic model based on Lennard-Jones Potential, the interaction force between two particles, molecular diffusion, and radial distribution function (RDF) is presented. The diffusion of the hydrated ion, triggered by both Grotthuss and vehicle mechanisms, is used to study the proton transfer in Nafion 117. The hydrated ion transfer mechanisms and the effects of the temperature, the water content in the membrane, and the electric field on the diffusion of the hydrated ion are analyzed. The molecular dynamic simulation results are in good agreement with those reported in the literature. The modeling results show that when the water content in Nafion 117 is low, H3O+is the main transfer ion among the different hydrated ions. However, at higher water content, the hydrated ion in the form of H+(H2O)2is the main transfer ion. It is also found that the negatively charged sulfonic acid group as the fortified point facilitates the proton transfer in Nafion 117 better than the free water molecule. The diffusion of the hydrated ion can be improved by increasing the cell temperature, the water content in Nafion, and the electric field intensity.

scholarly journals The Physics of Electric Field Effect Thermoelectric Devices

2000 ◽  
Vol 655 ◽  
Author(s):  
V. Sandomirsky ◽  
A. V. Butenko ◽  
R. Levin ◽  
Y. Schlesinger
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Figure Of Merit ◽  
Electric Field Effect ◽  
Thermoelectric Devices ◽  
Thermoelectric Figure ◽  
Doped Semiconductors ◽  
Novel Approach ◽  
The Subject ◽  
Heavily Doped

AbstractWe describe here a novel approach to the subject of thermoelectric devices. The current best thermoelectrics are based on heavily doped semiconductors or semimetal alloys. We show that utilization of electric field effect or ferroelectric field effect, not only provides a new route to this problem, bypassing the drawbacks of conventional doping, but also offers significantly improved thermoelectric characteristics. We present here model calculation of the thermoelectric figure of merit in thin films of Bi and PbTe, and also discuss several realistic device designs.

Solid-State Nanopores for Nanoparticle Sensing

2014 ◽  
Vol 618 ◽  
pp. 8-13
Author(s):  
Lei Wang ◽  
Wen Yuan Zhao ◽  
Dan Mo ◽  
Quan Jun Liu
Keyword(s):  
Solid State ◽  
Electric Field ◽  
Comsol Multiphysics ◽  
Particle Detection ◽  
Fundamental Study ◽  
Detection Techniques ◽  
Sensing Technology ◽  
The Subject ◽  
Single Particle Detection ◽  
Low Charge

In recent years, single particle detection techniques based on driving nanoparticles through nanoscopic pores with a voltage or pressure had been the subject of numerous studies. Since particles with high charge, such as DNA and proteins, have been widely used for research, there was little information about the translocation behavior of nanosized particles which with low charge. However, nanoparticles include virus and colloids are important samples for nanopore sensing technology. In this study, we employed the solid-state nanopore to sense nanoparticles as fundamental study. Nanopore with diameter of 185 nm has been used to detect the nanoparticles with compared low zeta potential of-16 mv in different voltages. And simulations of electric field strength was made by using COMSOL Multiphysics to assist analyze the translocation behavior. The result suggests that the nanoparticles could transport the nanopore under the large electric field. By rising up the bias voltage could favor the detection of the nanoparticles.

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