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Related Concept Videos

Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...
Momentum And Radiation Pressure01:20

Momentum And Radiation Pressure

An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because electromagnetic waves contain and transport momentum. The force accounts for the wave's radiation pressure exerted on the object. Maxwell's prediction was confirmed in 1903 by Nichols and Hull by precisely measuring radiation pressures with a torsion balance. The measuring instrument had mirrors suspended from a fiber kept inside a glass container. Nichols...

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Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

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Published on: December 11, 2014

Spin controlled optical radiation pressure.

Georgiy Tkachenko1, Etienne Brasselet

  • 1Université Bordeaux, Laboratoire Ondes et Matière d'Aquitaine, UMR 5798, F-33400 Talence, France.

Physical Review Letters
|August 6, 2013
PubMed
Summary
This summary is machine-generated.

Researchers achieved full control over optical radiation pressure using photon spin and chiral liquid crystal droplets. This breakthrough enables new optical sorting and manipulation techniques for chiral particles.

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Area of Science:

  • Optics and Photonics
  • Soft Matter Physics
  • Nanotechnology

Background:

  • Optical radiation pressure is a fundamental force exerted by light.
  • Controlling light-matter interactions is crucial for advanced optical technologies.
  • Chiral materials offer unique optical properties.

Purpose of the Study:

  • To demonstrate full control of optical radiation pressure via photon spin.
  • To investigate the coupling between light's linear and angular degrees of freedom.
  • To explore applications in optical sorting and manipulation.

Main Methods:

  • Utilizing transparent chiral liquid crystal droplets.
  • Applying fixed photon flux and incident angle.
  • Investigating the influence of photon spin on optical forces.

Main Results:

  • Achieved complete control over optical radiation pressure.
  • Demonstrated strong coupling between linear and angular degrees of freedom of light.
  • Validated the role of photon spin in optical radiation pressure.

Conclusions:

  • Photon spin is a key parameter for controlling optical radiation pressure.
  • Chiral liquid crystals provide a platform for spin-controlled light-matter interactions.
  • Potential for optical sorting of chiral particles and advanced micromanipulation.