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Seizing the moment: improving control of quantum dots
Researchers at the National Institute of Standards and Technology (NIST) and the National Renewal Energy Laboratory (NREL) report a way to measure accurately the amount of laser light needed to shift the electrons in a particular type of quantum dot between two discrete states, a low energy, ground state and a higher energy, excited state. (2003-06-24)
Smallest ever quantum dots bring real world applications closer
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, a development that suddenly brings quantum dot-based devices within reach. (2009-01-27)
Dot, dot, dot . . . How quantum dots line up
A method that can be used to predict the growth of earthquake faults also aids prediction of the tiniest of phenomena -- how arrays of (2003-07-09)
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. (2006-02-21)
Researchers set new record for brightness of quantum dots
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. (2007-09-25)
Etched quantum dots shape up as single photon emitters, NIST tests show
Like snowflakes or fingerprints, no two quantum dots are identical. (2011-02-23)
US Naval Research Laboratory 'connects the dots' for quantum networks
Researchers at the US Naval Research Laboratory developed a novel technique that could enable new technologies that use properties of quantum physics for computing, communication and sensing, which may lead to 'neuromorphic' or brain-inspired computing. (2019-07-09)
Shining a light on quantum dots measurement
Using the cadmium selenide quantum dot, researchers at Syracuse University collaborated to understand how protein corona forms and what is different about the quantum dot before and after the formation of the corona. (2015-01-15)
Spinning quantum dots
A new paper in EPJ B presents a theoretical analysis of electron spins in moving semiconductor quantum dots, showing how these can be controlled by electric fields in a way that suggests they may be usable as information storage and processing components of quantum computers. (2020-01-15)
Simultaneous detection of multiple spin states in a single quantum dot
Osaka University-led researchers achieved single-shot readout of three two-electron spin states of a single quantum dot. (2017-03-13)
Three for the price of one - mobile electrons multiplied in quantum dot films
Researchers of the Opto-electronic Materials section of Delft University of Technology in the Netherlands and Toyota Europe have demonstrated that several mobile electrons can be produced by the absorption of a single light particle in films of coupled quantum dots. (2011-10-14)
Optical shaping of polarization anisotropy in a laterally-coupled-quantum-dot dimer
Coupled-quantum-dot (CQD) structures are considered to be an important building block in the development of scalable quantum devices. (2020-07-10)
Scientists create new device to light up the way for quantum technologies
Researchers at CRANN and the School of Physics at Trinity College Dublin, Ireland, have created an innovative new device that will emit single particles of light, or photons, from quantum dots that are the key to practical quantum computers, quantum communications, and other quantum devices. (2020-07-07)
Defects in atomically thin semiconductor emit single photons
Researchers at the University of Rochester have shown that defects on an atomically thin semiconductor can produce light-emitting quantum dots. (2015-05-04)
Tagging faulty genes with fluorescent nanodots
A nanoscale imaging technique that could improve the reliability of an important diagnostic test for breast cancer, and other biomedical tests, is described by NIST researchers in a recent online issue of Nucleic Acids Research. (2004-02-26)
Researchers uncover new light harvesting potentials
Griffith University researchers have discovered significant new potentials for light harvesting through narrowing the bandgap of titania and graphene quantum dots. (2016-07-13)
Unleashing the power of quantum dot triplets
Quantum computers have yet to materialize. Yet, scientists are making progress in devising suitable means of making such computers faster. (2014-07-24)
Two quantum dots are better than one: Using one dot to sense changes in another
Osaka University researchers developed the first device that can detect single-electron events in a self-assembled quantum dot in real time. (2018-09-19)
Get ready for a new periodic table
Get ready for a new periodic table! Researchers at Hebrew university combine quantum dot 'atoms' and create new 'molecules.' (2019-12-16)
Making quantum dots glow brighter
Researchers have found a new way to control the properties of quantum dots, those tiny chunks of semiconductor material that glow different colors depending on their size. (2014-09-16)
3-D X-ray images of nanoparticles
A new X-ray microscope can look at nanomaterials in three dimensions. (2006-11-27)
Don't blink! NIST studies why quantum dots suffer from 'fluorescence intermittency'
Researchers have found that a particular species of quantum dots that weren't commonly thought to blink, do. (2014-05-22)
Light touch: Controlling the behavior of quantum dots
Researchers from NIST and the Joint Quantum Institute have reported a new way to fine-tune the light coming from quantum dots by manipulating them with pairs of lasers. (2008-08-19)
Professor uses diamond to produce graphene quantum dots and nano-ribbons of controlled structure
Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics. (2012-05-17)
JQI researchers create entangled photons from quantum dots
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. (2009-11-17)
Computing breakthrough could elevate security to unprecedented levels
By using pulses of light to dramatically accelerate quantum computers, University of Michigan researchers have made strides in technology that could foil national and personal security threats. (2007-08-16)
A burst of 'synchronous' light
Excited photo-emitters can cooperate and radiate simultaneously, a phenomenon called superfluorescence. (2018-11-08)
Researchers develop faster, precise silica coating process for quantum dot nanorods
Materials researchers have fine-tuned a technique that enables them to apply precisely controlled silica coatings to quantum dot nanorods in a day -- up to 21 times faster than previous methods. (2016-07-11)
U-M physicists create first atomic-scale map of quantum dots
University of Michigan physicists have created the first atomic-scale maps of quantum dots, a major step toward the goal of producing (2009-09-29)
NREL and partners demonstrate quantum dots that assemble themselves
Scientists from the U.S. Department of Energy's National Renewable Energy Laboratory and other labs have demonstrated a process whereby quantum dots can self-assemble at optimal locations in nanowires, a breakthrough that could improve solar cells, quantum computing, and lighting devices. (2013-02-19)
NREL and partners demonstrate quantum dots that assemble themselves
Scientists from the US Department of Energy's National Renewable Energy Laboratory and other labs have demonstrated a process whereby quantum dots can self-assemble at optimal locations in nanowires, a breakthrough that could improve solar cells, quantum computing, and lighting devices. (2013-04-16)
Cadmium selenide quantum dots degrade in soil, releasing their toxic guts, study finds
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. (2011-07-18)
Quantum dots provide complete control of photons
By emitting photons from a quantum dot at the top of a micropyramid, researchers at Linköping University are creating a polarized light source for such things as energy-saving computer screens and wiretap-proof communications. (2014-01-31)
Detraction-free light-matter interaction
Certain semiconductor structures, so-called quantum dots, might constitute the foundation of quantum communication. (2019-08-23)
Improved stability of electron spins in qubits
Calculation with electron spins in a quantum computer assumes that the spin states last for a sufficient period of time. (2015-09-07)
Producing spin-entangled electrons
A team from the RIKEN Center for Emergent Matter Science, along with collaborators from several Japanese institutions, have successfully produced pairs of spin-entangled electrons and demonstrated, for the first time, that these electrons remain entangled even when they are separated from one another on a chip. (2015-07-01)
Microneedle, quantum dot study opens door to new clinical cancer tools
Researchers from North Carolina State University have developed extremely small microneedles that can be used to deliver medically relevant nanoscale dyes called quantum dots into skin -- an advance that opens the door to new techniques for diagnosing and treating a variety of medical conditions, including skin cancer. (2010-08-25)
Quantum dot transistor simulates functions of neurons
Researchers at the Federal University of São Carlos (UFSCar) in São Paulo State, Brazil, Würzburg University in Germany, and the University of South Carolina in the United States developed a transistor that can lead to the development of new kinds of device and computer circuit in which memory units are combined with logical processing units, economizing space, time, and power consumption. (2017-06-14)
JILA solves problem of quantum dot 'blinking'
Scientists at JILA have found one possible way to induce quantum dots to emit photons faster and more consistently, without their characteristic blinking. (2008-01-23)
Controllable double quantum dots and Klein tunneling in nanotubes
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. (2009-05-14)
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