Results 81 to 90 of about 85,704 (284)

Multiple quantum NMR dynamics in a gas of spin-carrying molecules in fluctuating nanopores

, 2011
The effect of Gaussian fluctuations of nanopores filled with a gas of spin-carrying molecules ($s=1/2$) on the multiple quantum (MQ) NMR dynamics is investigated at different variances and correlation times of the fluctuations.
A.I. Zenchuk, Abragam, Alvarez, Alvarez, Baugh, Baum, Doronin, Doronin, Doronin, E.B. Fel’dman, Ernst, Fel’dman, Fel’dman, Goldman, Haeberlen, Jeener, Jeener, Khamzin, Khamzin, Kikuchi, Krojanski, Nielsen, Poncharal, Rudavets, Sivertsen   +24 more
core   +1 more source

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

Dielectric response of graphene and MoS2 nanopores in the detection of single amino acids

npj 2D Materials and Applications
Recent advances in two-dimensional material nanopores have promoted significant progress in biosensing technology with single-molecule precision. The potential of detecting single amino acids using graphene and MoS2 nanopores is investigated here, using ...
Longlong Li, Maria Fyta
doaj   +1 more source

Oriented Cell Alignment Induced by a Nanostructured Titanium Surface Enhances Expression of Cell Differentiation Markers

Nanomaterials, 2019
A key factor for dental implant success is a good sealing between the implant surface and both soft (gum) and hard (bone) tissues. Surface nanotopography can modulate cell response through mechanotransduction.
Maria Antonia Llopis-Grimalt, Andreu Miquel Amengual-Tugores, Marta Monjo, Joana Maria Ramis   +3 more
doaj   +1 more source

Pink noise of ionic conductance through single artificial nanopores revisited

, 2010
We report voltage-clamp measurements through single conical nanopore obtained by chemical etching of a single ion-track in polyimide film. Special attention is paid on the pink noise of the ionic current (i.e. $1/f$ noise) measured with different filling
Clochard, M. -C., Koutsioumpas, A., Lairez, D., Tasserit, C., Zalczer, G.   +4 more
core   +1 more source

Electro-Osmotic Vortices Promote the Capture of Folded Proteins by PlyAB Nanopores

Nano letters (Print), 2020
Biological nanopores are emerging as powerful tools for single-molecule analysis and sequencing. Here, we engineered the two-component pleurotolysin (PlyAB) toxin to assemble into 7.2 × 10.5 nm cylindrical nanopores with a low level of electrical noise ...
Gang Huang, Kherim Willems, Mart Bartelds, P. Van Dorpe, M. Soskine, G. Maglia   +5 more
semanticscholar   +1 more source

Structural and Chemical Engineering of Sub‐Nanochannel Membranes Toward Ion Selectivity

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in structural and chemical engineering of sub‐nanochannels for ion selectivity. We first introduce fundamental ion transport mechanisms within sub‐nanochannels, followed by strategies to tune pore size, geometry, and surface functionalities, categorized into charge‐based, ion‐recognition, hydrophilic bonding, and ...
Yuyu Su, Huacheng Zhang, Tamar L. Greaves, Qi Han, Weiwei Lei, Dan Liu   +5 more
wiley   +1 more source

Fast Fabrication Nanopores on a PMMA Membrane by a Local High Electric Field Controlled Breakdown

Sensors
The sensitivity and accuracy of nanopore sensors are severely hindered by the high noise associated with solid-state nanopores. To mitigate this issue, the deposition of organic polymer materials onto silicon nitride (SiNx) membranes has been effective ...
Shaoxi Fang, Delin Zeng, Shixuan He, Yadong Li, Zichen Pang, Yunjiao Wang, Liyuan Liang, Ting Weng, Wanyi Xie, Deqiang Wang   +9 more
doaj   +1 more source

Biomimetic potassium-selective nanopores [PDF]

Science Advances, 2018
A nanopore decorated with crown ether and DNA is selective to potassium ions over sodium ions at concentrations up to 1 M. Reproducing the exquisite ion selectivity displayed by biological ion channels in artificial nanopore systems has proven to be one ...
E. Acar, S. Buchsbaum, Cody Combs, F. Fornasiero, Z. Siwy   +4 more
semanticscholar   +1 more source

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh, Ying Zhao, Enzhong Jin, Zixin Zhang, Vinicius Martins, Parham Pirayesh, Yi Gan, Yi Yuan, Yijia Wang, Frederick Benjamin Holness, Changhong Cao, Jun Song, Yang Zhao   +12 more
wiley   +1 more source