Optical tweezers (OTs), also known as optical traps, are highly focused laser beams that can be used to trap and manipulate microscopic objects with a noncontact force. Employed in a wide range of nano and micro-scale operations, ...
Bio & Medicine
Oct 12, 2022
0
5
Composite particles with submicron sizes can be produced by irradiating a suspension of nanoparticles with a laser beam. Violent physical and chemical processes take place during irradiation, many of which have been poorly ...
Nanophysics
Sep 1, 2022
0
186
Getting atoms to do what you want isn't easy—but it's at the heart of a lot of groundbreaking research in physics.
General Physics
Aug 25, 2022
0
12
Physicists love to smash particles together and study the resulting chaos. Therein lies the discovery of new particles and strange physics, generated for tiny fractions of a second and recreating conditions often not seen ...
Optics & Photonics
Aug 10, 2022
0
100
Much ado was made about the Higgs boson when this elusive particle was discovered in 2012. Though it was touted as giving ordinary matter mass, interactions with the Higgs field only generate about 1 percent of ordinary mass. ...
General Physics
Aug 3, 2022
9
420
For decades, a textbook process known as "Ostwald ripening," named for the Nobel Prize-winning chemist Wilhelm Ostwald, has guided the design of new materials including nanoparticles—tiny materials so small they are invisible ...
Nanophysics
Jul 26, 2022
0
280
Scientists have developed a new machine-learning platform that makes the algorithms that control particle beams and lasers smarter than ever before. Their work could help lead to the development of new and improved particle ...
Optics & Photonics
Jul 19, 2022
0
704
The latest research from the labs of Penn scientists Paulo Arratia and Douglas Jerolmack was an answer to "a call for help," says Arratia.
General Physics
Jul 14, 2022
0
138
Dark matter is a type of matter in the universe that does not absorb, reflect or emit light, which makes it impossible to directly detect. In recent years, astrophysicists and cosmologists worldwide have been trying to indirectly ...
Quantum weirdness is opening new doors for electron microscopes, powerful tools used for high-resolution imaging.
General Physics
Apr 28, 2022
0
694
