Until recently, it was widely believed among physicists that it was impossible to compress light below the so-called diffraction limit (see below), except when using metal nanoparticles, which unfortunately also absorb light. ...
Optics & Photonics
Oct 26, 2022
0
973
(PhysOrg.com) -- Counterfeiting money is the "second oldest profession in the world" -- a profession that truly took off with the introduction of paper money. In order to spoil things for counterfeiters, Australia introduced ...
Materials Science
Apr 7, 2010
0
0
In today's digital world it can be challenging to prevent photos, videos and books from being illegally copied and distributed. A new light-based technique is making it more practical to create secure, invisible watermarks ...
Optics & Photonics
Nov 22, 2016
6
688
(PhysOrg.com) -- Although most materials change shape in the presence of a magnetic field, the change is usually very small. In a new study, scientists have found that a certain magnet containing manganese experiences a change ...
A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in our cell phones.
Optics & Photonics
Jan 9, 2012
4
0
Field-induced superconductivity occurs when an applied magnetic field increases or induces superconductivity. In a new report published in Science Advances, Joshua J. Sanchez and a team of scientists applied stress as a switch ...
A research team led by the U.S. Department of Energy's (DOE's) Argonne National Laboratory has discovered that only half the atoms in some iron-based superconductors are magnetic, providing a conclusive demonstration of the ...
Superconductivity
Apr 8, 2016
0
2249
A Rice University laboratory has improved upon its ability to determine molecular structures in three dimensions in ways that challenge long-used standards.
General Physics
Aug 15, 2013
0
0
A Northwestern University research team has found a way to manufacture single laser devices that are the size of a virus particle and that operate at room temperature. These plasmonic nanolasers could be readily integrated ...
Optics & Photonics
Nov 5, 2012
8
0
A new scientific instrument at the Department of Energy's SLAC National Accelerator Laboratory promises to capture some of nature's speediest processes. It uses a method known as ultrafast electron diffraction (UED) and can ...
General Physics
Aug 6, 2015
2
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