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

Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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

Li<sup>+</sup> intercalation chemistry on 2D transition metal dichalcogenides towards phase evolution, scalable production, and application.

National science review·2026
Same author

Two-dimensional melt growth of large-scale, single-crystalline hybrid organic-inorganic perovskite films.

Nature communications·2026
Same author

Charge Density Wave-Induced Highly Sensitive Terahertz Detection Based on a Large Nonlinear Hall Effect.

ACS nano·2026
Same author

Deciphering Competitive Kinetics in Nitrate Reduction via Mechanistic Modeling: Impact of Ru and Pd Dopants on Reaction Selectivity.

Journal of the American Chemical Society·2026
Same author

Ferroelectric brightening of spin‑forbidden dark excitons in a WSe<sub>2</sub>/hybrid-perovskite heterostructure.

Nature communications·2026
Same author

Nonreciprocal electrical transport in emerging noncentrosymmetric systems: from hidden symmetry to functional devices.

Reports on progress in physics. Physical Society (Great Britain)·2026

関連する実験動画

Updated: Jun 21, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

CdSe/AsSのコアシェルの量子ドット:準備と2フォトンの光.

Junzhong Wang1, Ming Lin, Yongli Yan

  • 1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.

Journal of the American Chemical Society
|July 25, 2009
PubMed
まとめ

研究者らは,アルゼンチンの硫化物 (AsS) でコーティングされたカドミウムセレニド (CdSe) のコアシェルナノ結晶を開発しました. これらの新しいナノ結晶は,強化された光性を示し,細胞のラベリングに使用することができます.

さらに関連する動画

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles
11:16

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

Published on: August 7, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

関連する実験動画

Last Updated: Jun 21, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles
11:16

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

Published on: August 7, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

科学分野:

  • ナノテクノロジー ナノテクノロジー
  • マテリアルサイエンス 材料科学
  • バイオフォトニクス バイオフォトニクス

背景:

  • カドミウムセレニド (CdSe) ナノ結晶は,その光学特性のために広く研究されています.
  • コア・シェル構造の開発は,ナノクリスタル性能を向上させ,新しい機能を導入することができます.
  • アルゼンチンの硫化物 (AsS) は,光電子機器の潜在的応用を持つ材料です.

研究 の 目的:

  • アルゼンチンの硫化物 (AsS) でコーティングされたCdSeのコアシェルナノ結晶を合成するために.
  • 新しいコア・シェル構造の光学特性を調査する.
  • これらのナノ結晶を細胞のラベリングに応用することを探求する.

主な方法:

  • 穏やかな条件下でのクラスター複合堆積方法.
  • 60°CでCdSeナノ結晶の上にAsSシェルの成長.
  • 結晶化のためにイソプロパノール/クロロフォームの混合溶媒を使用します.

主要な成果:

  • AsSコーティングされたCdSeコアシェルのナノ結晶を成功裏に準備しました.
  • 1フォトンの光が有意に増幅されたことが観察されました.
  • 強化された2フォトンのアップコンバージョンの光が実証されました.
  • タイプIのコアシェル構造を確認しました.

結論:

  • クラスター複合堆積法では,ASS/CdSeのコアシェルナノ結晶の生成に有効な経路を提供している.
  • これらの新しいナノ結晶は,裸のCdSe.Seと比較して優れた光特性を示しています.
  • AsS/CdSeナノ結晶は,赤外線で刺激されたアップコンバージョンのセルラーラベリングアプリケーションに適しています.