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関連する概念動画

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

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...
Gauss's Law in Dielectrics01:17

Gauss's Law in Dielectrics

Consider a polar dielectric placed in an external field. In such a dielectric, opposite charges on adjacent dipoles neutralize each other, such that the net charge within the dielectric is zero. When a polar dielectric is inserted in between the capacitor plates, an electric field is generated due to the presence of net charges near the edge of the dielectric and the metal plates interface. Since the external electrical field merely aligns the dipoles, the dielectric as a whole is neutral. An...

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関連する実験動画

Updated: Jul 11, 2026

Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
11:09

Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh

Published on: June 23, 2017

光学的に透明で,電気伝導性の高い複合材料媒体です.

S Jin, T H Tiefel, R Wolfe

    Science (New York, N.Y.)
    |January 24, 1992
    PubMed
    まとめ
    この要約は機械生成です。

    研究者らは,ポリマーに並べられた鉄磁気球を用いて透明で伝導性のある材料を開発した. この素材は1方向に高伝導性があり,圧力で切り替えることができ,タッチスクリーンに最適です.

    さらに関連する動画

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    The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors
    12:32

    The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors

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    関連する実験動画

    Last Updated: Jul 11, 2026

    Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
    11:09

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    Published on: June 23, 2017

    Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
    06:34

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    Published on: September 19, 2020

    The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors
    12:32

    The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors

    Published on: May 24, 2020

    科学分野:

    • マテリアルサイエンス 材料科学
    • ナノテクノロジー ナノテクノロジー
    • ポリマーサイエンスの科学

    背景:

    • 光学的に透明で電気伝導性の高い材料は,先進的な電子機器にとって極めて重要です.
    • 既存の材料は,透明性,伝導性,機械特性とのトレードオフに直面することが多い.
    • 新しい複合構造の開発は,これらの制限を克服する鍵です.

    研究 の 目的:

    • 光学的な透明性と方向的な電気伝導性を兼ね備えた新しい複合材料を開発する.
    • 材料の圧力による電気的切り替え性を調査する.
    • 視覚通信機器におけるこの材料の潜在的な応用を探求する.

    主な方法:

    • 縦に並び,横に隔離された鉄磁気球の鎖を透明なポリマーシートの中に分散させ,複合材料の製造.
    • 光学伝送率の特徴化 (インカンドライト伝送の>90%を達成する).
    • 電気伝導性の測定,特に厚さ方向での測定.
    • 圧力によって誘発される電気スイッチングの動作のテスト.

    主要な成果:

    • 複合材料は高い光学透明度 (>90%の光伝達率) を表しています.
    • この材料は,主に厚さ方向に沿って,高度に方向的な電気伝導性を示しています.
    • この材料は,値圧力が加わると,電源をオン・オフに切り替える能力を示しています.
    • 構造は,並べられた鉄磁気球によって形成された,好ましく配置された導電経路で構成されています.

    結論:

    • 画期的な光学的に透明で電気伝導性の高い複合材料が成功裏に開発されました.
    • 材料のユニークな方向伝導性と圧力交換性特性は,重要な利点を提供します.
    • 潜在的なアプリケーションには,タッチセンシティブスクリーンや書き込みパッドなどの高度な視覚通信デバイスが含まれます.