Browse Physics

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Focus

How to Manipulate Nanoparticles with Lasers

Physics 5, 95 (2012) – Published August 24, 2012

Theorists explain how a new generation of laser tractor beams can manipulate nanoparticles with unprecedented dexterity and precision.

Focus

Hearing the Highest Pitches

Phys. Rev. Focus 22, 2 (2008) – Published July 14, 2008

Two research groups show how to detect sound waves that have wavelengths as short as the spacing between atoms in a solid and frequencies in the terahertz range.

Focus

Needles Capture Whispers of Light

Phys. Rev. Focus 14, 10 (2004) – Published September 3, 2004

Zinc oxide nano-needles form the smallest “whispering galleries” for visible light ever created.

Focus

Small Spheres Make a Big Signal

Phys. Rev. Focus 12, 21 (2003) – Published December 1, 2003

A theory proposes that three tiny spheres can concentrate light into a small space and intensify it by a million times.

Focus

Manipulating Nanoparticles

Phys. Rev. Focus 11, 6 (2003) – Published February 11, 2003

Laser light tuned to resonate with the internal energy levels of particles may point the way to size- and shape-selective sorting at the nanoscale.

Focus

X Rays Stack Up

Phys. Rev. Focus 10, 6 (2002) – Published August 6, 2002

A new x-ray imaging technique has made its first foray into the third dimension.

Focus

Atoms in 3D

Phys. Rev. Focus 7, 10 (2001) – Published February 27, 2001

Pairs of atomic-scale images made from photoelectron diffraction with circularly polarized light can be merged into a stereoscopic, 3D view.