(Phys.org) -- Laser beams can be made to form dark as well as bright intensity helices, or corkscrews of light. In a paper shortly to appear in Optics Express, Dr Ole Steuernagel, at the University of Hertfordshire's Science ...
Optics & Photonics
Jun 12, 2012
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Counterfeiters are becoming increasingly more sophisticated in forging everything from diplomas and currency to medications and artwork. While protective measures such as luminescent markings (which glow under ultraviolet ...
Nanomaterials
Jun 24, 2024
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95
M. S. M. Saifullah and Hemant Raut of A*STAR's Institute of Materials Research and Engineering in Singapore and their co-workers have developed a coating that matches the optical properties of the best conventional anti-reflective ...
Materials Science
Oct 23, 2013
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Researchers have, for the first time, integrated two technologies widely used in applications such as optical communications, bio-imaging and Light Detection and Ranging (LIDAR) systems that scan the surroundings of self-driving ...
Optics & Photonics
Feb 28, 2018
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12
An international team of scientists led by researchers from the Laboratory of Nanomaterials at the Skoltech Center for Photonics and Quantum Materials (CPQM) has shown that the nonlinear optical response of carbon nanotubes ...
Nanomaterials
Oct 10, 2019
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13
Modern society is working closer to the nanoscale than it realises. Breakthroughs and advances in developing and manipulating nanostructures have led to technological progress that not only drives imaging and sensing devices ...
Nanophysics
Mar 4, 2020
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21
Much like the Jedis in Star Wars use the Force to control objects from a distance, scientists can use light or optical force to move very small particles. The inventors of this ground-breaking laser technology, known as "optical ...
Nanophysics
Mar 4, 2021
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31
A research group led by Prof. Sun Dunlu from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences, has successfully synthesized novel mid-infrared Ho,Pr:YAP and Er:YGGAG crystals using the Czchralski ...
Optics & Photonics
May 30, 2024
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Prof. Markus Pollnau and co-workers at the MESA+ Institute for Nanotechnology at the University of Twente (The Netherlands) have developed a rare-earth-ion-doped optical amplifier with performance comparable to semiconductor ...
Materials Science
Jan 12, 2012
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Expanding our scientific understanding often comes down to getting as close a look as possible at what is happening. Now researchers from Japan have observed the nanoscale behavior of azo-polymer films while triggering them ...
Nanomaterials
Mar 11, 2024
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