Light can be used not only to measure materials' properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity ...
General Physics
Jun 14, 2019
5
596
Scientists at Tokyo Institute of Technology and Keio University investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum ...
Optics & Photonics
May 22, 2019
0
103
In conventional holography a photographic film can record the interference pattern of monochromatic light scattered from the object to be imaged with a reference beam of un-scattered light. Scientists can then illuminate ...
It is estimated that in 2015, 217 million people had moderate to severe vision impairment, while 36 million were blind, according to an article in the journal The Lancet Global Health. The World Health Organization predicts ...
Optics & Photonics
May 14, 2019
0
12
Radar technologies were originally designed to identify and track airborne military targets. Today they're more often used to detect motor vehicles, weather formations and geological terrain.
Optics & Photonics
Apr 2, 2019
1
71
Researchers have developed the first wearable probe that enhances the sense of touch by imaging and quantifying the stiffness and elasticity of biological tissue. The device is being developed to improve the surgical removal ...
Optics & Photonics
Mar 12, 2019
0
28
Optical coherence tomography (OCT) is a light-based imaging technique currently used in clinical diagnostics to examine organs in vivo. The technique uses interferometry; in which light reflected from an examined object combines ...
Scientists have plenty of ways to watch as individual neurons in a brain fire, sending electrical signals from one to the next, but they all share a basic problem. Each method, whether it involves electrical probes, chemical ...
Optics & Photonics
Dec 13, 2018
0
219
A cheap, compact technique for analyzing samples at infrared wavelengths using visible-wavelength components could revolutionize medical and material testing.
Optics & Photonics
Nov 1, 2018
0
10
Glaucoma is the second leading cause of blindness in the world, impacting approximately 2.7 million people in the U.S alone. It is a complex set of diseases and, if left untreated, can lead to blindness. It's a particularly ...
Computer Sciences
Oct 31, 2018
0
13
