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Related Experiment Video

Updated: Jan 26, 2026

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

Gavin Young1, Philipp Kukura1

  • 1Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom; email: gavin.young@chem.ox.ac.uk , philipp.kukura@chem.ox.ac.uk.

Annual Review of Physical Chemistry
|April 13, 2019
PubMed
Summary
This summary is machine-generated.

Interferometric scattering microscopy (iSCAT) offers highly sensitive imaging of nanoscale objects. This technique enables advanced applications like single-particle tracking and molecular characterization, revealing hidden biomolecular dynamics.

Keywords:
interferencelabel-freemass measurementself-assemblysingle moleculesingle-particle tracking

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Area of Science:

  • Biophysics
  • Nanotechnology
  • Optical Microscopy

Background:

  • Nanoscopic objects are challenging to image with high contrast.
  • Existing methods often require labels or have limitations in sensitivity and quantitative analysis.

Purpose of the Study:

  • To introduce and demonstrate the capabilities of interferometric scattering microscopy (iSCAT).
  • To showcase iSCAT's potential for label-free, quantitative analysis of biomolecular dynamics.

Main Methods:

  • Utilizes the detection of light scattered by nanoscopic objects.
  • Maintains high imaging contrast irrespective of exposure time or scattering cross-section.

Main Results:

  • Demonstrated iSCAT for single-particle tracking.
  • Showcased label-free imaging of nanoscopic assembly and disassembly.
  • Enabled quantitative single-molecule characterization, including mass measurement.

Conclusions:

  • iSCAT is a versatile and highly sensitive imaging technique.
  • The method has broad applications in studying motor protein function, viral assembly, and molecular interactions.
  • iSCAT is poised to become a key tool for investigating biomolecular dynamics.