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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

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Published on: April 16, 2017

Photothermal single particle Rutherford scattering microscopy.

Markus Selmke¹, Frank Cichos

¹Molecular Nanophotonics Group, Institute of Experimental Physics I, University of Leipzig, 04103 Leipzig, Germany.

Physical Review Letters

|March 26, 2013

Summary

This summary is machine-generated.

Researchers show a new photothermal microscopy technique mirrors Rutherford scattering. Photons are deflected by a photothermal potential around heated nanoparticles, enabling ultra-sensitive particle velocimetry.

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Area of Science:

Optics and Photonics
Quantum Mechanics
Materials Science

Background:

Rutherford scattering describes particle deflection via Coulomb forces.
Photothermal microscopy typically uses heat to detect particles.

Purpose of the Study:

To demonstrate a photonic analog to Rutherford scattering.
To introduce a novel single-particle photothermal microscopy technique.
To enable new velocimetry methods for absorbing particles.

Main Methods:

Utilizing a split detector setup for photon deflection measurement.
Creating a photothermal potential via laser-induced heating of nanoparticles.
Analyzing photon deflection analogous to quantum-mechanical scattering.

Main Results:

Experimental evidence of photon deflection by a photothermal potential.
Demonstration of a photonic counterpart to Rutherford scattering.
Identification of a focal detection geometry with a lateral split feature.

Conclusions:

The new microscopy technique offers a quantum-mechanical description of photon-particle interaction.
The observed phenomenon allows for ultra-high sensitivity particle velocimetry.
This work opens avenues for advanced correlation-based measurements.