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関連する概念動画

Continuous Charge Distributions01:17

Continuous Charge Distributions

8.8K
Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
8.8K
Charge on a Conductor01:26

Charge on a Conductor

5.9K
An interesting property of a conductor in static equilibrium is that extra charges on the conductor end up on its outer surface, regardless of where they originate. Consider a hollow metallic conductor with a uniform surface charge density. Since the conductor itself is in electrostatic equilibrium, there should not be any electric field inside the conductor. Now, assume a Gaussian surface enclosing the hollow portion. Applying Gauss's law, the inner surface of the hollow conductor will not...
5.9K
Electrostatic Boundary Conditions01:16

Electrostatic Boundary Conditions

1.2K
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
1.2K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

933
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
933
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

2.1K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
2.1K
The Electrical Double Layer01:30

The Electrical Double Layer

194
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
194

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関連する実験動画

Updated: Apr 13, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

11.9K

集団的な散発貨物輸送船の移転は,静電的表面電荷蓄積によって引き起こされる.

M Nakano1, K Shibuya, D Okuyama

  • 1Correlated Electron Research Group and Cross-correlated Materials Research Group, RIKEN Advanced Science Institute, Wako 351-0198, Japan. mnakano@riken.jp

Nature
|July 28, 2012
PubMed
まとめ

研究者らは,二酸化バナジウムを用いた新しいフィールド効果装置を開発した. この装置は,低電圧で伝導性を切り替えることで,マクロスコープの電子相制御を可能にし,非揮発性メモリ効果を提供します.

さらに関連する動画

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
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Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

Published on: April 3, 2018

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Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

4.1K

関連する実験動画

Last Updated: Apr 13, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

11.9K
Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
07:54

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

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Finite Element Modelling of a Cellular Electric Microenvironment
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Finite Element Modelling of a Cellular Electric Microenvironment

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科学分野:

  • 凝縮物質物理学 凝縮物質物理学
  • マテリアルサイエンス 材料科学
  • デバイスエンジニアリング デバイスエンジニアリング

背景:

  • トランジスタは,外部電圧を介して伝導性を制御し,電子スイッチングを可能にします.
  • 従来の材料における電場効果は,スクリーニングによりナノメートルスケールのチャネルに限定されています.
  • 強く相関する材料は,電子網相互作用によって影響されるユニークな電子特性を示す.

研究 の 目的:

  • 固有の集団相互作用を持つ材料における電場制御を調査する.
  • 従来のスクリーニングの限界を克服する新しいフィールド効果装置を実証する.
  • 電子状態とメモリ効果の非局所的なスイッチングを調査する.

主な方法:

  • バナジウム二酸化物を用いた金属・断熱器・半導体フィールド効果トランジスタの製造.
  • 外部電圧による静電充電の適用.
  • ボルトスイープに対する材料の反応を分析し,金属・断熱器の移行に重点を置く.

主要な成果:

  • 静電的な充電により,大容量の電荷キャリアが動き出し,3Dの金属状態が生まれました.
  • 非ローカルな電子状態のスイッチングは,約1ボルトで達成されました.
  • 二酸化バナジウムにおける第1次金属分離器の移行は,室温非揮発性メモリ効果を提供した.

結論:

  • 新しいフィールド効果装置のコンセプトが実証され,電場制御をマクロスコープの相制御に拡張しました.
  • 二酸化ヴァナジウムトランジスタは,エネルギー効率の良い電子スイッチングおよびメモリアプリケーションの潜在能力を示しています.
  • この研究は,凝縮物質システムにおける電場効果に関する従来の理解に挑戦しています.