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Related Concept Videos

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...

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Related Experiment Video

Updated: Jun 18, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
13:02

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Photonic Nanojets.

Alexander Heifetz1, Soon-Cheol Kong, Alan V Sahakian

  • 1Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208 USA.

Journal of Computational and Theoretical Nanoscience
|December 1, 2009
PubMed
Summary
This summary is machine-generated.

Photonic nanojets are narrow light beams that can detect nanoparticles. These nanojets amplify nanoparticle signals, enabling applications in nanoscale manipulation and high-density optical storage.

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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Related Experiment Videos

Last Updated: Jun 18, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
13:02

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Area of Science:

  • Optics and Photonics
  • Nanotechnology
  • Materials Science

Background:

  • Photonic nanojets are narrow, high-intensity light beams generated from dielectric microstructures.
  • They exhibit non-evanescent propagation beyond the diffraction limit.
  • This phenomenon is nonresonant and occurs for microstructures with specific refractive index contrasts.

Purpose of the Study:

  • To review literature on photonic nanojets since 2004.
  • To highlight the unique properties of photonic nanojets for nanoscale applications.
  • To discuss the potential of photonic nanojets in sensing and manipulation.

Main Methods:

  • Literature review of photonic nanojet research.
  • Analysis of the optical properties of microcylinders and microspheres.
  • Investigation of nanoparticle interaction within photonic nanojets.

Main Results:

  • Photonic nanojets can achieve sub-diffraction beamwidths (~λ/3).
  • Nanoparticles within nanojets cause a d(ν)3 perturbation in far-field scattering, significantly enhanced compared to Rayleigh scattering (d(ν)6).
  • A small nanoparticle can dramatically alter the scattering of a larger microstructure.

Conclusions:

  • Photonic nanojets offer a powerful mechanism for projecting nanoscale object presence.
  • They enable sensitive detection and manipulation of nanoparticles.
  • Potential applications include sub-diffraction imaging, nanolithography, and optical data storage.