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Woodward–Hoffmann Selection Rules and Microscopic Reversibility01:34

Woodward–Hoffmann Selection Rules and Microscopic Reversibility

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Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
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Reversible and Irreversible Processes01:14

Reversible and Irreversible Processes

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The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
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Switching of BJT01:22

Switching of BJT

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Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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Mason's Rule01:20

Mason's Rule

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Mason's rule is a powerful tool in control systems and signal processing. It simplifies the calculation of transfer functions from signal-flow graphs. This method leverages various elements, including loop gains, forward-path gains, and non-touching loops, to determine the transfer function efficiently.
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Implicit Memories01:24

Implicit Memories

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Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
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関連する実験動画

Updated: May 1, 2026

A Method for Growing Bio-memristors from Slime Mold
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A Method for Growing Bio-memristors from Slime Mold

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"メモリティブ"スイッチは,マテリアルインプリケーションによる"ステートフル"論理操作を可能にします.

Julien Borghetti1, Gregory S Snider, Philip J Kuekes

  • 1Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, California 94304, USA.

Nature
|April 9, 2010
PubMed
まとめ
この要約は機械生成です。

抵抗性メモリの一種であるメモリスイッチは,ブール式論理演算を実行できます. これらのデバイスは,メモリとロジックゲートの両方として動作し,抵抗を高度なコンピューティングの状態変数として利用します.

さらに関連する動画

Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
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関連する実験動画

Last Updated: May 1, 2026

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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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科学分野:

  • マテリアルサイエンス 材料科学
  • コンピュータ工学 コンピュータ工学
  • 固体物理 固体物理学

背景:

  • 半導体のための国際技術ロードマップは,従来の電荷/電圧ベースのトランジスタを超えて探索するようにコンピューティングコミュニティに挑戦しています.
  • 薄膜装置を使用したレジスティヴメモリ配列は,超密度の高いメモリ能力を提供します.
  • メムリスター,またはメムリスティブデバイスは,電圧履歴に依存する抵抗を持つ2端子スイッチであると仮定されています.

研究 の 目的:

  • 論理演算を行うためのメモリ型のデバイスの可能性を調査する.
  • メムリスティブスイッチが基本的なブール論理関数を実行できることを示すために.
  • 論理ゲートとメモリ要素を組み合わせたメモリストを用いた"状態的な"論理演算を研究する.

主な方法:

  • 双極電圧で動作するスイッチを,メモリ型のデバイスの物理的実現として利用した.
  • マテリアルインプリケーション (IMP) のブール論理演算の実行を実証しました.
  • メモリスイッチが論理ゲートとメモリラッチの両方として機能する設計回路.

主要な成果:

  • メムリスティブスイッチは,マテリアルインプリケーション (IMP) ロジック操作を実行することが示されました.
  • これらのデバイスは,メモリと論理機能を統合した状態的な論理を成功裏に実行しました.
  • 物理状態の変数として,電荷や電圧ではなく,抵抗が使用されました.

結論:

  • メムリスティブデバイスは,状態的な論理操作を可能にすることで,コンピューティングへの新しいアプローチを提供します.
  • メムリストの状態変数としての抵抗の使用は,CMOSを超えるコンピューティングアーキテクチャのための新しい道を開きます.
  • メムリストは同時にロジックゲートとメモリ要素として機能し,集積回路技術の進歩をもたらします.