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Tiny crystals promise big benefits for solar technologies
Los Alamos National Laboratory scientists have discovered that a phenomenon called carrier multiplication, in which semiconductor nanocrystals respond to photons by producing multiple electrons, is applicable to a broader array of materials that previously thought. view more (2006-01-05)
Nanoscience Study Shows That Quantum Dots "Talk"
Scientists who hope to use quantum dots as the building blocks for the next generation of computers have found a way to make these artificial atoms communicate. view more (2006-02-22)
Discovery of 'doping' mechanism in semiconductor nanocrystals
Novel electronic devices based upon nanotechnology may soon be realized due to a new understanding of how impurities, or 'dopants,' can be intentionally incorporated into semiconductor nanocrystals. view more (2005-07-11)
Method slashes quantum dot costs by 80 percent
In an important advance toward the large-scale manufacture of fluorescent quantum dots, scientists at Rice University have developed a new method of replacing the pricey solvents used in quantum dot synthesis with cheaper oils that are commonplace at industrial chemical plants. view more (2005-09-08)
Full 3-D image of nanocrystals' interior created by shining X-rays through them
A vital step towards the ultimate goal of being able to take 'photographs' of individual molecules in action has been achieved by an international team led by UCL (University College London) researchers at the London Centre for Nanotechnology. view more (2006-07-06)
Researchers make nanosheets that mimic protein formation
University of Michigan researchers have discovered a way to make nanocrystals in a fluid assemble into free-floating sheets the same way some protein structures form in living organisms. view more (2006-10-13)
Delft researchers predict 'nanobattery' performance
Researchers at Delft University of Technology can predict how nanostructuring - the extreme reduction of structure - will affect the performance of Li-ion batteries. view more (2007-04-03)
JILA solves problem of quantum dot 'blinking'
Quantum dots-tiny, intense, tunable sources of colorful light-are illuminating new opportunities in biomedical research, cryptography and other fields. But these semiconductor nanocrystals also have a secret problem, a kind of nervous tic. They mysteriously tend to "blink" on and off like Christmas tree lights, which can reduce their... view more... (2008-01-24)
Gold-tipped nanocrystals developed by Hebrew University researchers
"Nanodumbells" - gold-tipped nanocrystals which can be used as highly-efficient building blocks for devices in the emerging nanotechnology revolution - have been developed by researchers at the Hebrew University of Jerusalem. The technology, developed by a research group headed by Prof. Uri Banin of the Department of Physical Chemistry... view more... (2004-06-17)
Finding by Rice University chemists could aid development of new nanodevices
Rice University chemists have discovered that tiny building blocks known as gold nanorods spontaneously assemble themselves into ring-like superstructures. view more (2007-03-12)
Argonne researcher studies what makes quantum dots blink
In order to learn more about the origins of quantum dot blinking, researchers from the U.S. Department of Energy's Argonne National Laboratory, the University of Chicago and the California Institute of Technology have developed a method to characterize it on faster time scales than have previously been accessed. view more (2007-10-05)
The Semiconductor Devices of the Future
When physicists sandwiched together different types of semiconductor to create the first transistor in 1947, they made bulky vacuum valves obsolete and so revolutionised the electronics industry. Since then researchers have been pushing the boundaries of semiconductor technology hoping for another revolution. At the 26th International Conference... view more... (2002-07-23)
Using nano-magnets to enhance medical imaging
Nanoscale magnets in the form of iron-containing molecules might be used to improve the contrast between healthy and diseased tissue in magnetic resonance imaging (MRI)—as long as the concentration of nanomagnets is carefully managed. view more (2007-02-02)
New metal crystals, formed on a cotton assembly line
Appropriating cellulose fibers from cotton and crystallizing them, scientists at Pacific Northwest National Laboratory have grown never-before-seen configurations of metal crystals that show promise as components in biosensors, biological imaging, drug delivery and catalytic converters. view more (2007-03-27)
Platinum nanocrystals boost catalytic activity for fuel oxidation, hydrogen production
A research team composed of electrochemists and materials scientists from two continents has produced a new form of the industrially-important metal platinum: 24-facet nanocrystals whose catalytic activity per unit area can be as much as four times higher than existing commercial platinum catalysts. view more (2007-05-04)
Press release from Nature and the Nature Research Journals
This Press Release contains: ·Summaries of newsworthy papers: NANOSCALE ARMS CONTROL - Nature Materials STEPMOTHER OF PEARL - Nature Materials COMBINATION VACCINE DELIVERS DOUBLE BLOW - Nature Medicine STEM CELL ENGRAFTMENT SUCCESS DOES NOT ENSURE LONG-TERM SURVIVAL - Nature Immunology Mention of papers to be published at the same time with the... view more... (2003-05-27)
Microwave synthesis connects with the (quantum) dots
Materials researchers at the National Institute of Standards and Technology (NIST) have developed a simplified, low-cost process for producing high-quality, water-soluble "quantum dots" for biological research. view more (2008-06-13)
New imaging technique reveals the atomic structure of nanocrystals
A new imaging technique developed by researchers at the University of Illinois overcomes the limit of diffraction and can reveal the atomic structure of a single nanocrystal with a resolution of less than one angstrom (less than one hundred-millionth of a centimeter). view more (2009-02-19)
Unique Quantum Effect Found in Silicon Nanocrystals
Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), collaborating with Innovalight, Inc., have shown that a new and important effect called Multiple Exciton Generation (MEG) occurs efficiently in silicon nanocrystals. MEG results in the formation of more than one electron per absorbed photon. view more (2007-07-26)
Hard shell, glowing core
Tiny semiconductor crystals can be prompted to give off light - brighter than conventional dyes and in wavelength ranges that these only produce under certain conditions. Israeli chemist Uri Banin and his coworker Yun-Wie Cao demonstrated this with several core/shell nanocrystals made of the semiconductor indium arsenide. It has been known for... view more... (1999-12-09)
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