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関連する概念動画

Electrical Power01:07

Electrical Power

3.8K
Electric power is the product of current and voltage, represented in units of joules per second, or watts. For example, cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. These outlets may be rated at 20 amps and 12 volts, so that the circuit can deliver a maximum power of 240 watts. Consider a 25 Watt bulb and a 60 Watt bulb. The conversion of electrical energy produces heat and light, while the kinetic energy lost by the...
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Electric Generator: Alternator01:25

Electric Generator: Alternator

3.5K
Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...
3.5K
Nuclear Power02:36

Nuclear Power

9.5K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.5K
Common Ion Effect03:24

Common Ion Effect

47.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
47.1K
ATP Driven Pumps III: V-type Pumps01:30

ATP Driven Pumps III: V-type Pumps

4.9K
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
4.9K
ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

6.5K
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
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関連する実験動画

Updated: Feb 13, 2026

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
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Electric and Magnetic Field Devices for Stimulation of Biological Tissues

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組み込みイオンポンプ ピエゾイオンヒドロゲルジェネレーター 自動駆動電気刺激用

Xiaodan Yang1,2, Yi Zheng1,2, Ying Hong3

  • 1Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China.

ACS applied materials & interfaces
|February 12, 2026
PubMed
まとめ

研究者らは,歪みを減らす新しい人工イオンポンプ (AIP) ヒドロゲルを開発し,改善されたセンサーと医療機器のためのピエゾイオン効果を大幅に強化しました. このイノベーションは,電圧応答を高め,効果的な神経調節を可能にします.

キーワード:
電気刺激による刺激です.エネルギー発電機 エネルギー発電機イオン輸送イオン輸送ピエゾエレクトリック効果です.ピエゾイオン製ヒドロゲル

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Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Mechanical Stimulation of Chondrocyte-agarose Hydrogels

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Programmed Electrical Stimulation in Mice
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Programmed Electrical Stimulation in Mice

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関連する実験動画

Last Updated: Feb 13, 2026

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

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Mechanical Stimulation of Chondrocyte-agarose Hydrogels
12:45

Mechanical Stimulation of Chondrocyte-agarose Hydrogels

Published on: October 27, 2012

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Programmed Electrical Stimulation in Mice
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Programmed Electrical Stimulation in Mice

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科学分野:

  • 材料科学 材料科学とは
  • バイオメディカルエンジニアリング
  • ソフトロボティクス ソフトロボティクス

背景:

  • ピエゾイオンヒドロゲルは,生物学的および電子的機能を統合しますが,低電圧反応に苦しんでいます.
  • 機械的微細構造と方向性イオン輸送の間の関係を理解することは,ヒドロゲル電子技術の進歩に不可欠です.

研究 の 目的:

  • 構造特性がピエゾイオン型ヒドロゲルの電気反応にどのように影響するか分析する.
  • ハイドロゲルの性能を最適化するために"歪み"の概念を導入し,適用する.
  • 強化されたピエゾイオン特性を持つ高度な人工イオンポンプ (AIP) ハイドロゲルを開発する.

主な方法:

  • 電気反応に対する構造的影響の体系的な分析.
  • 重要な物質特性として"歪み"の導入.
  • 修正された表面の極性および並べられた多孔構造を持つAIPヒドロゲルの開発.
  • イオン輸送経路と機械的変形の特徴.

主要な成果:

  • AIPヒドロゲルは, significantly tortuosity (35%) を大幅に減少させ,オーダーされたイオン輸送と効率の向上を可能にします.
  • アニゾトロプ的変形性と並べられた多孔構造は,変形中のストレス濃度を増幅します.
  • 開発されたAIPヒドロゲルは,最適化されていないバージョンと比較してピエゾイオン系数20倍以上の増加を示しています.
  • マウスの外周神経の調節に成功し,生理学的リズムと同期することが実証されています.

結論:

  • 曲折性概念を通じてピエゾイオン材料における明確な構造性能相関を確立した.
  • AIPヒドロゲルは,インプラント可能なデバイスの自己駆動感知および電気刺激のための有望なプラットフォームを提供します.
  • センサー,エネルギー収集,治療機能を統合した高度な医療機器の可能性を強調しています.