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quantum dots News
Laser Device Produces Dark Pulses
GAITHERSBURG, Md., June 10, 2010 — Researchers have demonstrated a new type of pulsed laser that excels at not producing light. The new device generates sustained streams of "dark pulses" – repeated dips in light intensity – which is the opposite of the bright bursts in a typical pulsed laser. Despite its ominous name, the dark pulse laser is envisioned as a tool for benign communications and measurements based on infrared light frequencies. The laser’s ultrashort pulses span just 90 picoseconds...
Mining for Quantum Dots
HOUSTON, May 26, 2010 — Graphene, the one-atom-thick, honeycomb-like form of carbon, is the material of choice for physicists on the cutting edge of materials science. Researchers mentored by Boris Yakobson, a Rice professor of mechanical engineering and materials science...
QDs Could Revolutionize Computing
QUEBEC, Canada, May 14, 2010 — Physicists at McGill University have developed a system for measuring the energy involved in adding electrons to semiconductor nanocrystals, also known as quantum dots – a technology that may revolutionize computing and other areas of science....
Bending Light at will with Transformation Optics
May 10, 2010 — Invisibility cloaks get all the publicity, but they may just be the beginning if the promise of transformation optics can be realized. The discipline could lead to smaller photonic and electronic devices and more cost-competitive solar cells –...
Photothermal imaging detects nanorod orientation
HOUSTON – “Fluorescence vector probes and polarization-sensitive single-molecule spectroscopies have been widely used to explore the conformation dynamics of proteins in biological systems – and an ideal probe should yield high signal with low...
Spanish University Wins Nanotech PV Project
CASTELLÓ, Spain, April 22, 2010 — After responding to a call for proposals, a research group led by Juan Bisquert at Universitat Jaume I of Castelló has won the bid for a scientific and technological research project on new types of solar cells based on nanotechnologies....
Quantum Dots Are Finding Their Place in the World
Apr 12, 2010 — There has been a panoply of research into the next big thing in quantum dots – those semiconducting artificial atoms that are ubiquitous in fluorescence imaging, biological and chemical sensing, and display applications. Quantum dots of more...
New Spintronics Material for Next-Gen Chips
LOS ANGELES, April 8, 2010 — As the electronics industry works toward developing smaller and more compact devices, the need to create new types of scaled-down semiconductors that are more efficient and use less power has become essential. Researchers from UCLA's Henry...
Single-Atom Laser Realized
INNSBRUCK, Austria, March 31, 2010 — Researchers in Austria have successfully realized a single-atom laser, an important step toward a fundamental understanding of laser operation in the few-atom limit, including syst...
$10M Venture Funding
Feb 28, 2010 — QD Vision Inc. of Watertown, Mass., has received $10 million in venture funding from North Bridge Venture Partners, Highland Capital Partners and the CIA’s investment arm, In-Q-Tel. The company will use the funds to bring its nanotechnology-based...
Breakthrough for Hybrid Solar Cells
FREIBURG, Germany, Feb. 19, 2010 – A method for treating the surface of nanoparticles has enabled researchers to attain an efficiency rate of 2 percent by using so-called quantum dots composed of cadmium selenide. The method was developed by Albert-Ludwigs-Universität Freiburg...
Diamond Device Channels Photons
CAMBRIDGE, Mass., Feb. 15, 2010 — A newly created diamond-based nanowire device offers a bright, stable source of single photons at room temperature — an essential element in making fast and secure computing w...
Tracking Particles With Gold Rods
HOUSTON, Feb. 8, 2010 – A group of Rice University researchers, led by Stephan Link, has found a way to use nanometer-scale gold rods as orientation sensors by combining their plasmonic properties with polarization-imaging techniques. The work may make it possible to see...
Other Trends: But wait – there’s more … !
Jan 4, 2010 — Well, now. You’ve read the previous articles covering the ongoing and upcoming trends in lasers, optics and imaging, but you’re probably thinking that there’s more to photonics than those technologies. You are correct; there is much more to the...
ASCB: Spotlight on Cell Bio
SAN DIEGO, Dec. 11, 2009 – The American Society for Cell Biology (ASCB) annual meeting at the San Diego Convention Center featured new products exhibited by companies such as Photometrics, Hamamatsu Photonics, PerkinElmer, Nikon and Agilent Technologies.
ASCB: Spotlight on Cell Biology
SAN DIEGO, Dec. 11, 2009 – Not even a day of rain and wind could keep attendees away from the American Society for Cell Biology (ASCB) annual meeting at the San Diego Convention Center this week. In fact, the uncharacteristically gray, wet weather might have kept...
Nanotowers Fire Off Photons
WÜRZBURG, Germany, Dec. 1, 2009 – Nanotowers made of semiconducting material 'fire off' single photons in a targeted fashion, an ability needed for secure data transmission through quantum cryptography, said researchers at the University of Würzburg.
QDs Improve Medical Imaging
GAITHERSBURG, Md., Nov. 19, 2009 – Changes in a living cell that take place over a long period of time are difficult to scrutinize and require high-spatial-resolution imaging. But new research now makes it possible to analyze activities that occur over hours or even days inside...
Painting the roof with solar ink
Nov 1, 2009 — Covering rooftops with solar cells came one step closer to reality recently when JA Solar of Yangzhou, China, announced plans to commercialize technology developed by Innovalight, a San Francisco Bay-area company that makes a silicon solar...
Irish Fund Young Researchers
DUBLIN, Ireland, Oct. 23, 2009 – The Irish government awarded €7.9 million (about $11.8 million) to 15 young researchers at seven colleges and institutes in Cork, Dublin and Galway to support their ongoing work in semiconductor optoelectronics, next-generation computer chips and...
The road to solar cell supremacy
Oct 1, 2009 — The silicon traditionally used to make solar panels is costly and inefficient at converting sunlight into electricity, experts say, yet it remains the material most commonly used to make solar panels. “This sounds rather ugly, but silicon is the...
1st Atomic-scale QD Map Made
ANN ARBOR, Mich., Sept. 29, 2009 – The first atomic-scale maps of quantum dots was created by a team of physicists at the University of Michigan, who say it is a major step toward producing “designer dots” that can be tailored for specific applications.
Solar infusion in the Netherlands
Sep 1, 2009 — Several solar projects have received hefty subsidies as part of the Joint Solar Programme (JSP), which aims to promote research into photovoltaic solar energy in the Netherlands. JSP is funded by the Netherlands Organization for Scientific Research...
Electronic Metamaterial Made
BASEL, Switzerland, July 17, 2009 -- Physicists and chemists in Switzerland defied the belief that electrical resistance of a material can't be adjusted by developing thin films with controllable electronic properties. The discovery could have a big impact on future applications in...
Ion Trap Senses Force, Light
GAITHERSBURG, Md., July 6, 2009 – Miniature devices for trapping ions are common components in atomic clocks and quantum computing research. Now, a novel ion trap geometry demonstrated at NIST holds promise as a stylus for sensing very small forces and light particles for quantum...
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June 2024
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