Theoretical physicist Farokh Mivehvar has investigated the interaction of two collections of atoms emitting light inside a quantum cavity—an optical device consisting of two high-quality, tiny mirrors facing each other ...
Optics & Photonics
Feb 19, 2024
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12
An experimental antenna has received both radio frequency and near-infrared laser signals from NASA's Psyche spacecraft as it travels through deep space. This shows it's possible for the giant dish antennas of NASA's Deep ...
Space Exploration
Feb 8, 2024
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15
Researchers have developed a new method for making tiny stretchable antennas from a hydrogel and liquid metal. The antennas could be used in wearable and flexible wireless electronic devices to provide a link between the ...
Condensed Matter
Sep 18, 2023
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214
Optical nanoantennas capable of converting external electromagnetic fields into confined energy and vice versa play a very important role in optical field manipulation. Among them, the bowtie antenna has received extensive ...
Optics & Photonics
Jun 2, 2022
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32
A hand-held laser pointer produces no noticeable recoil forces when it is "fired"—even though it emits a directed stream of light particles. The reason for this is its very large mass compared to the very small recoil impulses ...
Nanophysics
Apr 21, 2022
1
161
Understanding how light waves oscillate in time as they interact with materials is essential to understanding light-driven energy transfer in materials, such as solar cells or plants. Due to the fantastically high speeds ...
Optics & Photonics
Apr 30, 2021
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3035
Researchers have announced a prototype for a laser at the heart of the first space-based gravitational wave observatory, known as the Laser Interferometer Space Antenna (LISA) mission. The team's new laser nearly meets the ...
Optics & Photonics
Sep 18, 2019
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35
Antennas catch radio waves, a form of electromagnetic radiation, from the air and convert the energy into electrical signals that feed modern telecommunications. They can also convert electrical signals into radio waves. ...
Optics & Photonics
Mar 13, 2019
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5
Electrons inside an atom whip around the nucleus like satellites around the Earth, occupying orbits determined by quantum physics. Light can boost an electron to a different, more energetic orbit, but that high doesn't last ...
Optics & Photonics
Feb 4, 2019
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129
A nanoscale optical antenna developed by researchers at A*STAR allows the manipulation of visible light waves on the scale of microchips. Such nanoantennae may enable the development of high-resolution imaging systems in ...
Nanophysics
Nov 16, 2018
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10
