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Related Concept Videos

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.

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Related Experiment Video

Updated: Jun 6, 2026

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles
12:51

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

Published on: November 14, 2015

Small upconverting fluorescent nanoparticles for biomedical applications.

Dev K Chatterjee1, Muthu Kumara Gnanasammandhan, Yong Zhang

  • 1Division of Bioengineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574.

Small (Weinheim an Der Bergstrasse, Germany)
|November 11, 2010
PubMed
Summary
This summary is machine-generated.

Upconverting fluorescent nanoparticles offer superior alternatives to traditional fluorescent dyes for biological imaging. These advanced nanomaterials overcome issues like photobleaching and high background noise, enabling better biomedical applications.

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Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

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Last Updated: Jun 6, 2026

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles
12:51

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

Published on: November 14, 2015

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Optical Imaging

Background:

  • Traditional fluorescent dyes (fluorophores) suffer from photobleaching, high background noise, and photodamage.
  • Downconversion fluorescence is the basis for conventional fluorophores, limiting their biological application effectiveness.
  • Autofluorescence in biological samples further complicates imaging with traditional methods.

Purpose of the Study:

  • To review the development of upconverting fluorescent nanoparticles.
  • To critically examine the reported applications of these nanoparticles in biomedicine.
  • To discuss the future potential of upconverting nanoparticles in biomedical fields.

Main Methods:

  • Literature review of upconverting fluorescent nanoparticles.
  • Analysis of nanoparticle properties and performance metrics.
  • Synthesis and characterization of upconverting nanoparticles (implied).

Main Results:

  • Upconverting nanoparticles utilize a process called 'upconversion' to emit higher energy photons (visible or NIR) upon NIR light excitation.
  • These nanoparticles overcome key limitations of traditional fluorophores, including photobleaching and photodamage.
  • Upconversion offers reduced background noise compared to conventional fluorescent labels.

Conclusions:

  • Upconverting fluorescent nanoparticles represent an advantageous alternative to traditional fluorescent labels for biological applications.
  • Their unique properties make them ideal for advanced imaging and assays with reduced artifacts.
  • Significant future potential exists for upconverting nanoparticles in diverse biomedical applications, including diagnostics and therapeutics.