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Electrical Power01:07

Electrical Power

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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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Electrical Energy01:10

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Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules.
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Induced Electric Fields01:23

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The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
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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.
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A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
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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...
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積み重ねられた水素ガスを使って 電気にインスパイアされたソフトパワーソース

Thomas B H Schroeder1,2, Anirvan Guha2, Aaron Lamoureux3

  • 1Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, USA.

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まとめ

研究者達は 柔軟で バイオコンパティブルな エネルギー源を開発しました この人工的な電気器官は 電気を生成するヒドロゲル膜を用いて ペースメーカーのような 医療用インプラントに電力を供給します

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科学分野:

  • 生物医学工学
  • 材料科学
  • バイオ電子

背景:

  • 生物にテクノロジーを組み込むには バイオコンパティブルで柔軟で 生物学的エネルギーを利用できる 新しいエネルギー源が必要です
  • 従来の電池は 生物学的システムとシームレスに統合するために必要な柔軟性や生物互換性が欠けています
  • 電気の電気器は 効率的な生体内発電の 生物学的モデルです

研究 の 目的:

  • バイオコンパティブルで柔軟な電気的エネルギー源を 開発する
  • 生物環境内で発電するヒドロゲルベースのシステムの可能性を調査する.
  • 次の世代の 埋め込み可能な電子機器のための 拡張可能なパワーコンセプトを作成します

主な方法:

  • ミニチュアポリアクリルアミドの水素ゲルを用いて人工の電気器官を設計した.
  • イオングラデントを生成するために,カチオンとアニオン選択のヒドロゲル膜の繰り返し配列を使用した.
  • 何千ものゲルコンパートメントの機械的接触活性化のために,スケーラブルな積み重ねまたは折り畳み幾何学を使用しています.

主要な成果:

  • オープン回路で110ボルトと ゲルセル1平方メートルあたり27ミリワットを生成します
  • 複数のゲルコンパートメントの 機械的な接触による同時活性化を達成した.
  • 柔らかく 柔軟で 透明で バイオコンパティブルな 電力システムです

結論:

  • 人工電気オルガンのコンセプトは,バイオ・インテグレーテッド・エレクトロニクスのための従来のバッテリーに有望な代替品を提供します.
  • この技術により,ペースメーカーやセンサーなどの 導入可能なデバイスの開発が可能になります.
  • このシステムの特徴は 新種のハイブリッド生物と非生物のシステムに 道を切り開きます