Turn on an electric field, and a standard electrocaloric material will eject heat to its surroundings as its internal dipoles reorder themselves. Do the same thing, and a negative electrocaloric material will absorb heat, ...
General Physics
Apr 5, 2016
0
549
Beneath many cities are complex networks of optical fibres that carry data, encoded in pulses of light, to offices and homes. Researchers from the National University of Singapore (NUS) and Singtel, Asia's leading communications ...
Optics & Photonics
Apr 5, 2019
0
298
Microscopes of visible light allow scientists to see tiny objects such living cells. Yet, they cannot discern how electrons are distributed among atoms in solids. Now, researchers with Prof. Eleftherios Goulielmakis of the ...
Optics & Photonics
Jul 1, 2020
0
210
(AP) -- Republican presidential candidate Newt Gingrich wants to create a lunar colony that he says could become a U.S. state. There's his grand research plan to figure out what makes the human brain tick. And he's warned ...
Space Exploration
Jan 31, 2012
52
0
Single particles of light, also known as photons, have been produced and implemented into a quantum key distribution (QKD) link, paving the way for unbreakable communication networks.
Quantum Physics
Aug 3, 2012
7
0
(Phys.org) —Future fitness trackers could soon add blood-oxygen levels to the list of vital signs measured with new technology developed by engineers at the University of California, Berkeley.
Engineering
Dec 10, 2014
0
1
How can the color of laser light be changed? One popular method to achieve this is the so-called second harmonic generation (SHG) effect, which doubles the frequency of light and hence changes its color. However, observing ...
Optics & Photonics
Jun 15, 2017
0
21
Plants have microscopically small pores on the surface of their leaves called stomata. These help plants regulate the influx of carbon dioxide for photosynthesis. They also prevent the loss of too much water and withering ...
Plants & Animals
Jul 9, 2021
0
26
Researchers from EPFL's Photonics Systems Lab have come up with a way of reconfiguring microwave photonic filters without the need for an external device. This paves the way for more compact, environmentally friendly filters ...
Optics & Photonics
Sep 7, 2020
0
87
Recently, a research group from the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences (CAS) has observed periodic electron bunch fringes induced by the femtosecond laser field.
Optics & Photonics
Dec 11, 2020
0
1345
