Ion transport through confined ion channels in the presence of immobile charges [PDF]
Phys. Rev. E 81, 031928 (2010), 2009 We study charge transport in an ionic solution in a confined nanoscale geometry in the presence of an externally applied electric field and immobile background charges. For a range of parameters, the ion current shows non-monotonic behavior as a function of the external ion concentration.
B. Hille +3 more
arxiv +3 more sources
Low-excitation transport and separation of high-mass-ratio mixed-species ion chains [PDF]
Physical Review Research, 2023 We demonstrate low-excitation transport and separation of two-ion crystals consisting of one ^{9}Be^{+} and one ^{40}Ca^{+} ion, with a high mass ratio of 4.4.
F. Lancellotti +8 more
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Quantitative description of ion transport via plasma membrane of yeast and small cells [PDF]
Frontiers in Plant Science, 2015 Modelling of ion transport via plasma membrane needs identification and quantitative understanding of the involved processes. Brief characterisation of main ion transport systems of a yeast cell (Pma1, Ena1, TOK1, Nha1, Trk1, Trk2, non-selective cation ...
Vadim eVolkov
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Coherent Diabatic Ion Transport and Separation in a Multi-Zone Trap Array [PDF]
, 2012 We investigate the motional dynamics of single and multiple ions during transport between and separation into spatially distinct locations in a multi-zone linear Paul trap. A single 9Be+ ion in a 2 MHz harmonic well located in one zone was laser-cooled to near its ground state of motion and transported 370 micrometers by moving the well to another zone.
Bowler, R. +8 more
arxiv +3 more sources
Speeding up adiabatic ion transport in macroscopic multi-Penning-trap stacks for high-precision experiments [PDF]
Communications PhysicsMulti-Penning traps are an excellent tool for high-precision tests of fundamental physics in a variety of applications, ranging from atomic mass measurements to symmetry tests.
Moritz von Boehn +8 more
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A physical derivation of high-flux ion transport in biological channel via quantum ion coherence [PDF]
Nature CommunicationsBiological ion channels usually conduct the high-flux transport of 107 ~ 108 ions·s− 1; however, the underlying mechanism is still lacking. Here, by applying the KcsA potassium channel as a typical example, and performing multitimescale molecular ...
Yue Wang +5 more
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Concentration Polarization of High Concentration Solution in Sub-nm Nanopore [PDF]
E3S Web of Conferences, 2021 The behavior of ion transport through the sub-nm nanopores on the film is is different from the behavior of bulk behavior. Many intriguing phenomena in ionic transport are the key to the design and fabrication of solid-state nanofluidic devices. However,
Ji Anping, Chen Yunfei
doaj +1 more source
Energies, 2021 Ion transport is a significant concept that underlies a variety of technologies including membrane technology, energy storages, optical, chemical, and biological sensors and ion-mobility exploration techniques.
Nawapong Unsuree +8 more
doaj +1 more source
Ion Transport Activity Assay for Microbial Rhodopsin Expressed in Escherichia coli Cells
Bio-Protocol, 2021 Microbial rhodopsins have diverse functions, including roles as light-driven ion pumps, light-gated ion channels, photosensors, and light-regulated enzymes.
Masae Konno +2 more
doaj +1 more source
Ion Channels and Transporters in Autophagy [PDF]
Autophagy, 2021 Ion exchange between intracellular and extracellular spaces is the basic mechanism for controlling cell metabolism and signal transduction. This process is mediated by ion channels and transporters on the plasma membrane, or intracellular membranes that surround various organelles, in response to environmental stimuli.
Ruoxi Zhang +3 more
openaire +2 more sources