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New genre of sugar-coated 'quantum dots' for drug delivery
Nanotechnology / Bio & Medicine
Mar 04, 2009 |
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(PhysOrg.com) -- Scientists in Switzerland are reporting an advance that could help tap the much-heralded potential of “quantum dots”— nanocrystals that glow when exposed to ultraviolet light — in the treatment of cancer ...
Coupling of Single Quantum Dots to Smooth Metal Films
Jul 20, 2009 |
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Scientists at Argonne National Laboratory's CNM Nanophotonics Group have measured how light emission from individual colloidal semiconductor nanocrystals, or quantum dots, is modified when in proximity to ...
Single Atom Quantum Dots Bring Real Devices Closer (Video)
Jan 27, 2009 |
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(PhysOrg.com) -- Single atom quantum dots created by researchers at Canada’s National Institute for Nanotechnology and the University of Alberta make possible a new level of control over individual electrons, ...
Researchers Design Triple Quantum Dot for Quantum Information Applications
Nov 30, 2009 |
4.7 / 5 (18) |
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(PhysOrg.com) -- While quantum dots have existed since the 1980s, only in the past decade have physicists successfully created lateral few-electron single quantum dots. These quantum dots enable physicists ...
Controllable double quantum dots and Klein tunneling in nanotubes
May 14, 2009 |
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Researchers from the Kavli Institute of NanoScience in Delft are the first to have successfully captured a single electron in a highly tunable carbon nanotube double quantum dot. This was made possible by a new approach for ...
Quantum dots as midinfrared emitters
Feb 23, 2009 |
4.1 / 5 (10) |
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(PhysOrg.com) -- “People are interested in the mid-infrared,” Dan Wasserman tells PhysOrg.com. Infrared light has a wavelength longer than visible light, and many molecules have numerous very strong optical resonances in the ...
Physicists create first atomic-scale map of quantum dots
Sep 29, 2009 |
4.7 / 5 (13) |
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(PhysOrg.com) -- University of Michigan physicists have created the first atomic-scale maps of quantum dots, a major step toward the goal of producing "designer dots" that can be tailored for specific applications.
Researchers set new record for brightness of quantum dots
Sep 25, 2007 |
4.5 / 5 (24) |
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By placing quantum dots on a specially designed photonic crystal, researchers at the University of Illinois have demonstrated enhanced fluorescence intensity by a factor of up to 108. Potential applications include high-brightness ...
JQI researchers create entangled photons from quantum dots
Nov 18, 2009 |
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To exploit the quantum world to the fullest, a key commodity is entanglement—the spooky, distance-defying link that can form between objects such as atoms even when they are completely shielded from one another. Now, physicists ...
Tiny particles make LED light more pleasing
Nanotechnology / Nanomaterials
May 05, 2009 |
4.9 / 5 (11) |
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(AP) -- Light-emitting diodes are prime candidates for replacing inefficient incandescent bulbs, but have a few things working against them. They can provide a pleasing warm light or they can be energy-efficient, ...
'Squeezing' light into quantum dots
Apr 01, 2009 |
4.3 / 5 (11) |
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(PhysOrg.com) -- “Quantum wells have been instrumental in telecommunications, enabling light amplification,” Patanjali Kambhampati tells PhysOrg.com, “but theory has suggested that a very small - colloidal - quantum dot co ...
Evaluating Multiple Biomarkers With Quantum Dots
Nanotechnology / Bio & Medicine
May 22, 2007 |
3.8 / 5 (5) |
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Quantum dots linked to biological molecules, such as antibodies, have shown promise as a new tool for detecting and quantifying a wide variety of cancer-associated molecules. Now, thanks to detailed studies of how to make ...
Scientists eye risks of quantum dots
Nanotechnology / Bio & Medicine
Feb 02, 2009 |
4.3 / 5 (6) |
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Quantum dots have the potential to bring many good things into the world: efficient solar power, targeted gene and drug delivery, solid-state lighting and advances in biomedical imaging among them.
Can three-photon absorption lead to better bio-imaging?
Apr 18, 2008 |
4.1 / 5 (31) |
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One of the more interesting concepts being looked at in terms of quantum chemistry is that of three-photon absorption (3PA). 3PA works when three photons are simultaneously absorbed in one event. Because three photon absorption ...
Researchers Suggest Quantum Dots as Media for Teleportation
Jun 21, 2007 |
4.3 / 5 (136) |
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According to recent research, tiny clusters of atoms known as quantum dots may be excellent media for quantum teleportation, a physics phenomenon in which information – in the form of a quantum state, a very specific mathematical ...
