Latest Quantum dot Stories
Quantum dots made from cadmium and selenium degrade in soil, unleashing toxic cadmium and selenium ions into their surroundings, a University at Buffalo study has found.The research, accepted for publication in the journal Environmental Science and Technology, demonstrates the importance of learning more about how quantum dots -- and other nanomaterials -- interact with the environment after disposal, said Diana Aga, the chemistry professor who led the study.Quantum dots are semiconductor...
'Doped' nanocrystals are the future of technology, says Tel Aviv University researcherModern electronics as we know them, from televisions to computers, depend on conducting materials that can control electronic properties. As technology shrinks down to pocket sized communications devices and microchips that can fit on the head of a pin, nano-sized conducting materials are in big demand.Now, Prof. Eran Rabani of Tel Aviv University's School of Chemistry at the Raymond and Beverly Sackler...
University of Toronto researchers have derived inspiration from the photosynthetic apparatus in plants to engineer a new generation of nanomaterials that control and direct the energy absorbed from light.Their findings are reported in a forthcoming issue of Nature Nanotechnology, which will be released on July 10, 2011.The U of T researchers, led by Professors Shana Kelley and Ted Sargent, report the construction of what they term "artificial molecules.""Nanotechnologists have...
Berkeley Lab Scientists Find Unique Luminescence in Tetrapod NanocrystalsObservation of a scientific rule being broken can sometimes lead to new knowledge and important applications. Such would seem to be the case when scientists with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) created artificial molecules of semiconductor nanocrystals and watched them break a fundamental principle of photoluminescence known as "Kasha's rule."Named for chemist...
At the smallest scales, magnetism may not work quite the way scientists expected, according to a recent paper in Physical Review Letters by Rafal Oszwaldowski and Igor Zutic of the University at Buffalo and Andre Petukhov of the South Dakota School of Mines and Technology.The three physicists have proposed that it would be possible to create a quantum dot -- a kind of nanoparticle -- that is magnetic under surprising circumstances.Magnetism is determined by a property all electrons possess:...
This breakthrough in production process not only enables the low cost, high volume production of quantum dots, but also provides flexibility in the choice of materials used to produce the quantum dots including heavy metal free (Cadmium Free) quantum dots and other biologically inert materials. (PRWEB) June 23, 2011 Quantum Materials Corp and the Access2Flow Consortium of the Netherlands today announce that continuous production of Tetrapod Quantum Dots has been achieved using its...
When semiconductor nanorods are exposed to light, they blink in a seemingly random pattern. By clustering nanorods together, physicists at the University of Pennsylvania have shown that their combined "on" time is increased dramatically providing new insight into this mysterious blinking behavior.The research was conducted by associate professor Marija Drndic's group, including graduate student Siying Wang and postdoctorial fellows Claudia Querner and Tali Dadosh, all of the Department of...
(Ivanhoe Newswire)-- New medical technology is showing that Cornell dots may be a potential cancer diagnostic tool. The U.S Food and Drug Administration (FDA) has recently approved the first clinical trial in humans using Cornell Dots- brightly glowing nanoparticles that can light up cancer cells in PET-optical imaging.Cornell Dots are silica spheres less than eight nanometers in diameter that enclose several dye molecules. To make the dots stick to tumor cells, organic molecules that bind to...
A new generation of high speed, silicon-based information technology has been brought a step closer by researchers in the Department of Electronic and Electrical Engineering at UCL and the London Centre for Nanotechnology. The team's research, published in next week's Nature Photonics journal, provides the first demonstration of an electrically driven, quantum dot laser grown directly on a silicon substrate (Si) with a wavelength (1300-nm) suitable for use in telecommunications.Silicon is the...
TROY, N.Y. and SEOUL, South Korea, May 5, 2011 /PRNewswire/ -- Evident Technologies, Inc. and Samsung Electronics Co., Ltd have entered into a comprehensive patent licensing and purchasing agreement for Evident's quantum dot LED technology. This agreement grants Samsung worldwide access to Evident's patent portfolio for all products related to quantum dot LEDs from manufacture of the quantum dot nanomaterials to final LED production. "We are excited that Samsung, the leader in consumer...
