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関連する概念動画

Superconductor01:24

Superconductor

A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
Types Of Superconductors01:28

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
Energy Stored In A Coaxial Cable01:31

Energy Stored In A Coaxial Cable

A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
Maximum Power Transfer01:16

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...

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関連する実験動画

Updated: Jul 8, 2026

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

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Published on: December 5, 2015

高性能の高TC超伝導電線 高性能TC超伝導電線

S Kang1, A Goyal, J Li

  • 1Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.

Science (New York, N.Y.)
|April 1, 2006
PubMed
まとめ
この要約は機械生成です。

私たちは,柱状の欠陥を持つ厚いYBa2Cu3O ((7-デルタ) フィルムを使用して,高性能の超伝導電線を開発しました. これらのワイヤーは,強力な磁場の中でも,優れた臨界電流密度を示し,大規模アプリケーションの要件を満たしています.

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関連する実験動画

Last Updated: Jul 8, 2026

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

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Published on: May 21, 2016

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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科学分野:

  • マテリアルサイエンス 材料科学
  • 凝縮物質物理学 凝縮物質物理学
  • 超伝導性は超伝導性である.

背景:

  • 高温超伝導材料 (HTS) は,大規模アプリケーションの大きな可能性を秘めています.
  • 適用された磁場における高臨界電流密度 (Jc) の達成は,HTSワイヤーの主要な課題です.

研究 の 目的:

  • 要求の高いアプリケーションの性能要件を満たす超伝導線セグメントを開発し,特徴づけること.
  • YBa2Cu3O ((7-デルタ) フィルムの臨界電流と磁場性能を高めるために.

主な方法:

  • パルスレーザーアブレーションを用いたローリングアシスタントバイアキシアルテクスチャの基板上の3マイクロメートルの厚さのYBa2Cu3O (((7-デルタ) フィルムのエピタキシアル成長.
  • フィルム厚さ全体に周期的な列状の柱状欠陥 (自己調整ナノドット) を組み込む.

主要な成果:

  • 製造されたYBa2Cu3O ((7-デルタ) フィルムは,アプリケーションの要件を満たすまたは超えた臨界電流密度を示した.
  • 重要な電流の有意な改善は,自己フィールドで観察され,高度に適用された磁場では優れた電流保持が観察されました.
  • 柱状の欠陥は,効率的に超伝導渦を固定し,ワイヤーの性能を大幅に改善しました.

結論:

  • 開発された超伝導電線セグメントは,磁場における高性能を必要とする大規模アプリケーションに大きな希望を示しています.
  • 柱状欠陥を組み込む戦略は,HTSワイヤの臨界電流密度と磁場耐性を高めるのに有効です.