Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

BJT Amplifiers01:14

BJT Amplifiers

970
Bipolar Junction Transistors (BJTs) are pivotal components in amplifier circuits, functioning as voltage-controlled current sources in their active region. This characteristic allows them to efficiently control the collector current through variations in the base-emitter voltage. Essentially, BJTs amplify power due to their ability to take a weak input signal and output a much stronger signal.
In BJT amplifier configurations, particularly in common-emitter setups, the transistor's role...
970
Operational Amplifiers01:17

Operational Amplifiers

1.9K
The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
1.9K
MOSFET Amplifiers01:17

MOSFET Amplifiers

508
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
508
Instrumentation Amplifier01:25

Instrumentation Amplifier

1.0K
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
1.0K
Dark Triad and Person Perception01:29

Dark Triad and Person Perception

283
Person perception is influenced by both external behaviors and the observer’s internal characteristics, including personality traits. Individuals with dark personality traits, comprising psychopathy, Machiavellianism, and narcissism — collectively known as the dark triad – exhibit manipulative and exploitative tendencies in social contexts. These traits affect how they perceive others and how they are perceived.The Role of Dark Personality Traits in Person PerceptionBlack et...
283
Amplifying Signals via Second Messengers01:15

Amplifying Signals via Second Messengers

8.5K
Many receptor binding ligands are hydrophilic; they do not cross the cell membrane but bind to cell-surface receptors. Thus, their message must be relayed by second messengers present in the cell cytoplasm. There are several second messenger pathways, each with its own way of relaying information. For example, the G protein-coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol pathway is active when the receptor induces...
8.5K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Binary-Solvent-Programmed Single-Step Inkjet Printing of Self-Confined Micro-Inlaid OLED Arrays.

Small methods·2026
Same author

Inverse Design of Optical Color Routers with Improved Fabrication Compatibility.

Nanomaterials (Basel, Switzerland)·2026
Same author

High-speed blind structured illumination microscopy via unsupervised algorithm unrolling.

Nature communications·2026
Same author

Multilayered Fabrication Containing Wind Turbine Blade Solid Wastes for High-Performance Composite Fibers.

ACS materials Au·2025
Same author

Random Metastructures for Nanoscale Visualization of Single-Exosome Dynamics in a Gut-Brain-Axis-on-a-Chip.

ACS nano·2025
Same author

Functionalized Nanofinger Enhances Pretrained Language Model Performance for Ultrafast Early Warning of Heart Attacks.

ACS applied bio materials·2025
Same journal

Kat5 deficiency in alveolar type II cells licenses STAT6-driven glycolytic reprogramming and pulmonary fibrosis.

Nature communications·2026
Same journal

Continuous nonthermal slab gap formed by progressive tearing beneath Northeast Asia.

Nature communications·2026
Same journal

Zeolitic isolated protonic acid sites-mediated NH<sub>3</sub> storage for robust NO<sub>x</sub> removal.

Nature communications·2026
Same journal

Coaxially nested component with asymmetric fiber resonant cavity and separation membrane for gaseous and dissolved gases detection.

Nature communications·2026
Same journal

Near-unity charge readout signal in a nonlinear resonator without matching the sensor dissipation.

Nature communications·2026
Same journal

Prokaryotic Schlafen proteins cleave tRNAs during type III CRISPR immunity.

Nature communications·2026
関連記事をすべて見る

関連する実験動画

Updated: Jan 25, 2026

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters
14:58

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

10.0K

メタ増幅暗視野干渉散乱顕微鏡

Hongki Lee1, Junxiang Zhao1, Pan Hu2

  • 1Department of Electrical and Computer Engineering University of California, San Diego, CA, USA.

Nature communications
|January 23, 2026
PubMed
まとめ
この要約は機械生成です。

メタ増幅暗視野干渉散乱顕微鏡(MAD-iSCAT)は、微小なナノ粒子の検出を大幅に強化します。この新しい技術は、ラベルフリーの生物学的研究のために感度と画像コントラストを高めるためにプラズモニックメタサーフェスを使用します。

キーワード:
ナノ粒子検出プラズモニックメタサーフェス干渉散乱顕微鏡バイオセンシング光学質量分析ラベルフリー検出MAD-iSCAT

さらに関連する動画

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
09:46

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Published on: April 28, 2022

4.7K
Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
11:57

Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM

Published on: December 1, 2016

11.2K

関連する実験動画

Last Updated: Jan 25, 2026

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters
14:58

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

10.0K
Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
09:46

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging

Published on: April 28, 2022

4.7K
Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
11:57

Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM

Published on: December 1, 2016

11.2K

科学分野:

  • ナノテクノロジー
  • 生物物理学
  • 光学顕微鏡

背景:

  • ナノメートルスケールの生体粒子のラベルフリー光学検出は、非侵襲的な生物学的研究にとって重要です。
  • 既存の干渉散乱顕微鏡(iSCAT)は、弱い散乱信号のために小さな粒子に対する感度と画像コントラストに課題があります。
  • 弱い信号と背景照明の区別は、現在のiSCAT法における大きなハードルとなっています。

研究 の 目的:

  • ナノ粒子検出の強化のための新しい顕微鏡技術、メタ増幅暗視野干渉散乱顕微鏡(MAD-iSCAT)を導入すること。
  • 従来のiSCATの感度とコントラストの限界を克服するためにプラズモニックメタサーフェスを活用すること。
  • より高いスループットと感度で生体粒子の改善されたラベルフリー検出を実証すること。

主な方法:

  • サブ回折限界プラズモニックメタ原子アレイで構成されるプラズモニックメタサーフェスの開発と応用。
  • 増幅されたナノ粒子散乱のための明るい放射モードを生成するためにMAD-iSCATを利用すること。
  • ナノ粒子が存在しない場合に背景信号を最小限に抑えるために、メタサーフェス内の暗い集団モードを採用すること。

主要な成果:

  • 誘電ナノ粒子、エクソソーム、タンパク質を検出するためのコントラストと信号対雑音比の大幅な強化の実験的実証。
  • 設計されたメタサーフェスの増幅干渉イメージング機能の検証理論解析。
  • プラズモニックメタサーフェスを使用することによる検出感度の大幅な増幅を達成しました。

結論:

  • MAD-iSCATは、ナノメートルスケールの生体粒子のラベルフリー検出のための強力な新しいツールを提供します。
  • 開発された技術は、バイオセンシングと光学質量分析において幅広い適用性を示しています。
  • MAD-iSCATは、生物学的イメージングと分析のための感度とスループットの大幅な改善を可能にします。