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excitons News
Spectroscopy Deems Biexciton Binding Energy Usable in Electronics
MELBOURNE, Australia, March 10, 2022 — Researchers at Swinburne University of Technology used an advanced spectroscopy technique to quantify the energy required to bind two excitons into a biexciton state, reportedly for the first time. The Swinburne team collaborated with researchers at Australian National University to directly measure the biexciton binding energy in tungsten disulfide (WS2), a 2D material from the transition metal dichalcogenide (TMDC) family of semiconductors. The team said its findings could be used to
DNA Origami Supports Applications In and Beyond Life Sciences
REGENSBURG, Germany, March 26, 2021 — A European research team developed a dye- and DNA programming-based approach for counting molecules present within individual complexes. The approach supports biomedical and life sciences applications, as well as those involving OLEDs, solar cells,...
Material Controls Excitons at Room Temperature
SAN DIEGO, March 11, 2016 — A material that can control excitons &mash; bound pairs of electrons and electron holes — at room temperature could enable optoelectronic devices for commercial applications. Excitons are created when a laser is shone onto a semiconductor...
2D Semiconductors Preserve Excitons, Explored for Integrated Nanophotonics
SEATTLE, Feb. 24, 2016 — Combining two different ultrathin semiconductors — each just one layer of atoms thick — creates a 2D heterostructure with potential uses in clean energy and optically active electronics. University of Washington scientists have created a...
Exciton Movement Observed Directly
CAMBRIDGE, Mass., and NEW YORK, April 17, 2014 — For decades, scientists' understanding of excitons has been theoretical at best. However, a recent breakthrough has changed the game.
Quantum Droplets Form in Laser-Shot Semiconductors
BOULDER, Colo., March 3, 2014 — The accidental discovery of a new quasiparticle that behaves like a drop of liquid could provide a better understanding of solid-state devices such as semiconductors and superconductors.
Exotic Particles, Chilled and Trapped, Form Giant Matter Wave
SAN DIEGO, June 6, 2012 — Excitons were trapped and cooled so effectively that they condensed and cohered to form a giant matter wave, a feat that will enable scientists to study the physical properties of excitons, which exist only fleetingly yet offer promising...
Power to the Polaritons: Light-Matter Coupling Strengthened
PHILADELPHIA, June 17, 2011 — The field of photonics could see a promising advance, thanks to new engineering research that couples the strength of polaritons when confined to nanoscale semiconductors. This could lead to smaller and faster circuits that use light rather than...
Doped Nanotubes Shine Brighter for Months
HOUSTON, Dec. 13, 2010 — Rice University researchers have discovered a simple way to make carbon nanotubes shine brighter. Bruce Weisman, a pioneer in nanotube spectroscopy and a researcher at Rice, found that adding tiny amounts of ozone to batches of single-walled...
Nanotube Solar Funnel Concentrates Light
CAMBRIDGE, Mass., Sept. 14, 2010 — Chemical engineers at MIT have used hollow tubes of carbon atoms to concentrate solar energy 100 times more than would a regular photovoltaic cell. Such nanotubes could form antennas that capture and focus light energy, potentially allowing much...
ICs Built at -234 ºF
SAN DIEGO, Sept. 28, 2009 – Physicists at UC San Diego successfully created speedy integrated circuits with particles called “excitons,” which operate at commercially cold temperatures. This development brings closer to reality the possibility of a new type of extremely fast...
Pixel-like Light Sensors
TORONTO, ON, June 19, 2009 – Light sensors that act like pixels in a digital camera were created at the University of Toronto. The sensors benefit from a phenomenon known as multi-exciton generation (MEG). Until now, no group had collected an electrical current from a device...
Spontaneous Coherence Production Observed
SAN DIEGO, Nov. 2, 2006 -- The spontaneous production of coherence within "excitons," the bound pairs of electrons and holes that enable semiconductors to function as novel electronic devices, have been observed, for the first time, by physicists at the University of...
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April 2024
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