Controllable ion transport induced by pH gradient in thermally crosslinked submicrochannel heterogeneous membrane

The Analyst ◽  
2021 ◽  
Author(s):  
Yuan-Ju Tang ◽  
Shui Jie Zhang ◽  
Zi-Tao Zhong ◽  
Wenming Su ◽  
Yuan-Di Zhao
Keyword(s):  
Solid State ◽  
Ion Channels ◽  
Ion Transport ◽  
Transport Properties ◽  
Ph Gradient ◽  
Good Stability ◽  
Heterogeneous Membrane ◽  
Micrometer Scale

Solid-state nanochannels have attracted much attention for their similar ion transport properties to biological ion channels. The construction of porous ion channels with good stability at submicro/micrometer scale is very...

scholarly journals Ion transport across solid-state ion channels perturbed by directed strain

Nanoscale ◽  
2020 ◽  
Vol 12 (18) ◽  
pp. 10328-10334 ◽  
Author(s):  
A. Smolyanitsky ◽  
A. Fang ◽  
A. F. Kazakov ◽  
E. Paulechka
Keyword(s):  
Solid State ◽  
Ion Channels ◽  
Ion Transport ◽  
Computer Simulations ◽  
Ion Permeation ◽  
Ion Pore

Using computer simulations, we demonstrate ion permeation measurements across strained membranes that may potentially be used to obtain directional profiles of ion-pore energetics as contributed by the pore edge atoms.

Synapse-Inspired Variable Conductance in Biomembranes: A Preliminary Study

2017 ◽  
Author(s):  
Joseph S. Najem ◽  
Graham J. Taylor ◽  
Charles P. Collier ◽  
Stephen A. Sarles
Keyword(s):  
Signal Transduction ◽  
Solid State ◽  
Ion Channels ◽  
Ion Transport ◽  
Lipid Membrane ◽  
Long Term Potentiation ◽  
High Energy ◽  
Ion Conductance ◽  
Synapse Plasticity ◽  
Droplet Interface Bilayer

Memristors are solid-state devices that exhibit voltage-controlled conductance. This tunable functionality enables the implementation of biologically-inspired synaptic functions in solid-state neuromorphic computing systems. However, while memristors are meant to emulate an intricate signal transduction process performed by soft biomolecular structures, they are commonly constructed from silicon- or polymer-based materials. As a result, the volatility, intricate design, and high-energy resistance switching in memristive devices, usually, leads to energy consumption in memristors that is several orders of magnitude higher than in natural synapses. Additionally, solid-state memristors fail to achieve the coupled dynamics and selectivity of synaptic ion exchange that are believed to be necessary for initiating both short- and long-term potentiation (STP and LTP) in neural synapses, as well as paired-pulse facilitation (PPF) in the presynaptic terminal. LTP is a phenomenon mostly responsible for driving synaptic learning and memory, features that enable signal transduction between neurons to be history-dependent and adaptable. In contrast, current memristive devices rely on engineered external programming parameters to imitate LTP. Because of these fundamental differences, we believe a biomolecular approach offers untapped potential for constructing synapse-like systems. Here, we report on a synthetic biomembrane system with biomolecule-regulated (alamethicin) variable ion conductance that emulates vital operational principals of biological synapse. The proposed system consists of a synthetic droplet interface bilayer (DIB) assembled at the conjoining interface of two monolayer-encased aqueous droplets in oil. The droplets contain voltage-activated alamethicin (Alm) peptides, capable of creating conductive pathways for ion transport through the impermeable lipid membrane. The insertion of the peptides and formation of transmembrane ion channels is achieved at externally applied potentials higher than ∼70 m V. Just like in biological synapses, where the incorporation of additional receptors is responsible for changing the synaptic weight (i.e. conductance), we demonstrate that the weight of our synaptic mimic may be changed by controlling the number of alamethicin ion channels created in a synthetic lipid membrane. More alamethicin peptides are incorporated by increasing the post-threshold external potential, thus leading to higher conductance levels for ion transport. The current-voltage responses of the alamethicin-based synapse also exhibit significant “pinched” hysteresis — a characteristic of memristors that is fundamental to mimicking synapse plasticity. We demonstrate the system’s capability of exhibiting STP/PPF behaviors in response to high-frequency 50 ms, 150 mV voltage pulses. We also present and discuss an analytical model for an alamethicin-based memristor, classifying that later as a “generic memristor”.

Bioinspired Ion-Transport Properties of Solid-State Single Nanochannels and Their Applications in Sensing

ChemPhysChem ◽  
2012 ◽  
Vol 13 (10) ◽  
pp. 2455-2470 ◽  
Author(s):  
Ye Tian ◽  
Liping Wen ◽  
Xu Hou ◽  
Guanglei Hou ◽  
Lei Jiang
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Transport Properties

Dendrites in Solid‐State Batteries: Ion Transport Behavior, Advanced Characterization, and Interface Regulation

2021 ◽  
pp. 2003250
Author(s):  
Zhenjiang Yu ◽  
Xueyan Zhang ◽  
Chuankai Fu ◽  
Han Wang ◽  
Ming Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Advanced Characterization ◽  
Transport Behavior ◽  
Solid State Batteries

Ion transport properties of ionic liquid based gel electrolytes

2012 ◽  
Vol 60 ◽  
pp. 366-374 ◽  
Author(s):  
S.S. Sekhon ◽  
D.P. Kaur ◽  
J.-S. Park ◽  
K. Yamada
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Transport Properties ◽  
Gel Electrolytes

scholarly journals Photophysical and charge transport properties of pyrazolines

RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 786-795 ◽  
Author(s):  
Joseph Ajantha ◽  
Elumalai Varathan ◽  
Vishal Bharti ◽  
Venkatesan Subramanian ◽  
Shanmugam Easwaramoorthi ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Transport ◽  
Transport Properties ◽  
High Yields

Pyrazoline, an intense green emitting molecule both in solution and solid state, with extended π-conjugation has been synthesized via simple two-step reactions in high yields.

Design, synthesis and membrane ion transport properties of cystine- and serine-based cyclo -4-oxa-heptane-1,7-bisamides

2002 ◽  
Vol 43 (29) ◽  
pp. 5145-5147 ◽  
Author(s):  
Darshan Ranganathan ◽  
Manoj P Samant ◽  
R Nagaraj ◽  
E Bikshapathy
Keyword(s):  
Ion Transport ◽  
Transport Properties ◽  
Design Synthesis ◽  
Membrane Ion Transport

scholarly journals Insights into interfacial effect and local lithium-ion transport in polycrystalline cathodes of solid-state batteries

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuaifeng Lou ◽  
Qianwen Liu ◽  
Fang Zhang ◽  
Qingsong Liu ◽  
Zhenjiang Yu ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Chemical Potential ◽  
Lithium Ion ◽  
Local Environment ◽  
Underlying Mechanism ◽  
Transport Kinetics ◽  
Potential Force ◽  
Interfacial Contact ◽  
Solid State Batteries

Abstract Interfacial issues commonly exist in solid-state batteries, and the microstructural complexity combines with the chemical heterogeneity to govern the local interfacial chemistry. The conventional wisdom suggests that “point-to-point” ion diffusion at the interface determines the ion transport kinetics. Here, we show that solid-solid ion transport kinetics are not only impacted by the physical interfacial contact but are also closely associated with the interior local environments within polycrystalline particles. In spite of the initial discrete interfacial contact, solid-state batteries may still display homogeneous lithium-ion transportation owing to the chemical potential force to achieve an ionic-electronic equilibrium. Nevertheless, once the interior local environment within secondary particle is disrupted upon cycling, it triggers charge distribution from homogeneity to heterogeneity and leads to fast capacity fading. Our work highlights the importance of interior local environment within polycrystalline particles for electrochemical reactions in solid-state batteries and provides crucial insights into underlying mechanism in interfacial transport.

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