Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

4.5K
GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
4.5K
Electrochemical Gradient and Channel Proteins: An Overview01:21

Electrochemical Gradient and Channel Proteins: An Overview

1.9K
An electrochemical gradient is a fundamental concept in biology and chemistry. It regulates the movement of ions across cell membranes. This movement is influenced by two factors:
The electrical gradient: The electrical gradient across cell membranes refers to the difference in electric charge between the inside and outside of a cell.  This difference drives the movement of ions towards or away from the cells. For instance, if the inside of the cell is more negatively charged relative to...
1.9K
Graded Potential01:19

Graded Potential

3.5K
Graded potentials are localized fluctuations in the cell membrane's electrical charge, commonly found in the dendrites of neurons. The magnitude of these potential changes depends on the strength of the initiating stimulus. In a membrane at its resting potential, a graded potential signifies a voltage shift either above -70 mV or below -70 mV.
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
3.5K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

4.5K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
4.5K
MOS Capacitor01:25

MOS Capacitor

666
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
666
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

6.2K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
6.2K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Giant and broadband circular dichroism from particle-hole symmetry breaking in Weyl semimetals.

Nature materials·2026
Same author

Acoustoelectric control of optoelectronic anisotropy for reconfigurable polarimetry.

Science advances·2026
Same author

Multifield Modulation of Resistance States in a Spin Valve Based on Chiral Perovskites.

The journal of physical chemistry letters·2026
Same author

Dynamic Control of Crystallographic Orientation and Multiferroicity in Epitaxial YCrO<sub>3</sub> Films via Oxygen Pressure Modulation.

ACS applied materials & interfaces·2026
Same author

Doping-induced magnetic phase transition enables all-electrical spin control in CrSBr.

Nature communications·2025
Same author

Defect Engineering for Stabilizing Magnetic and Topological Properties in Mn(Bi<sub>1-x</sub>Sb<sub>x</sub>)<sub>2</sub>Te<sub>4</sub>.

Nature communications·2025

相关实验视频

Updated: May 25, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.3K

由于烟电电荷积累造成的意想不到的大型静电隙.

Yicheng Mou1, Qi Liu1, Jiaqi Liu1

  • 1State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, China.

Nano letters
|February 27, 2025
PubMed
概括

这项研究展示了一种新的方法,用于在石墨烯设备中实现长期静电门,使用酸的火电效应. 这种无电压的方法为控制电子元件中的兴奋剂度提供了一种新的方法.

关键词:
电静电门的封闭方式铁电是铁电的发电源.石墨烯是一种石墨烯.热电效应是一种热电效应.表面的声波是表面的声波.

更多相关视频

AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

11.5K
Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
08:43

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

Published on: November 7, 2016

8.0K

相关实验视频

Last Updated: May 25, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.3K
AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

11.5K
Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
08:43

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

Published on: November 7, 2016

8.0K

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术

背景情况:

  • 热电包括热量诱导的偏振变化在铁电材料中的电荷积累.
  • 这种效应通常是不稳定的,在电子应用中被忽视,例如铁电场效应晶体管.
  • 石墨烯的独特电子特性使其适用于新型设备应用.

研究的目的:

  • 调查火电在石墨烯设备中实现稳定的静电门的潜力.
  • 探索使用铁电基板 (LiNbO3) 和范德瓦尔斯接口 (hBN) 来增强火电效应.
  • 为了展示一种新的,具有长时间保留的无电压门机制.

主要方法:

  • 使用具有火电性质的LiNbO3基板和六角化 (hBN) 接口.
  • 在LiNbO3/hBN异构结构上制造的石墨烯装置.
  • 使用运输测量和非接触技术来分析兴奋剂水平和电荷积累.

主要成果:

  • 通过LiNbO3.3的火电效应在石墨烯中实现了实质性和长期的静电门.
  • 在石墨烯中观察到高剂度,在冷却后高达10^13cm^-2.
  • 证明了由电场增强的火电电荷积累是高兴奋剂水平的原因.

结论:

  • LiNbO3的热电特性可以通过范德瓦尔斯接口在石墨烯中诱导显著和持久的兴奋剂.
  • 这项工作介绍了一种具有长时间保留的无电压静电门的新机制,克服了火电效应之前的局限性.
  • 这些发现为开发使用可调节兴奋剂和控制的火电材料的先进电子设备开辟了新的途径.