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Latest quantum dots Stories

2011-07-18 16:36:27

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...

2011-07-11 20:08:36

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 for many...

2011-06-25 00:00:32

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...

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2011-03-27 11:15:00

Researchers study quantum dots to increase the amount of electricity solar panels produceStudies done by Mark Lusk and colleagues at the Colorado School of Mines could significantly improve the efficiency of solar cells. Their latest work describes how the size of light-absorbing particles--quantum dots--affects the particles' ability to transfer energy to electrons to generate electricity.The results are published in the April issue of the journal ACS Nano.The advance provides evidence to...

2011-02-24 17:38:04

Like snowflakes or fingerprints, no two quantum dots are identical. But a new etching method for shaping and positioning these semiconductor nanocrystals might change that. What's more, tests at the National Institute of Standards and Technology (NIST) confirm that etched quantum dots emit single particles of light (photons), boosting prospects for powering new types of devices for quantum communications. The conventional way to build quantum dots"”at NIST and elsewhere"”is to...

2011-02-20 22:09:48

The sun provides more than enough energy for all our needs, if only we could harness it cheaply and efficiently. Solar energy could provide a clean alternative to fossil fuels, but the high cost of solar cells has been a major barrier to their widespread use. Stanford researchers have found that adding a single layer of organic molecules to a solar cell can increase its efficiency three-fold and could lead to cheaper, more efficient solar panels. Their results were published online in ACS...

2010-11-01 23:14:39

Researchers at the University at Buffalo have developed a novel technology using quantum dots that is expected to have major implications for research and treatment of tuberculosis, as well as other inflammatory lung diseases. A paper appearing online in Nanomedicine: Nanotechnology, Biology and Medicine as an article-in-press describes specific delivery of a chemotherapeutic drug to specific cells in the lung, particularly the alveolar white cell, without causing acute inflammation. Quantum...

2010-10-20 18:40:37

Discovery advances novel devices Chinese researchers, reporting in the Journal of Applied Physics, published by the American Institute of Physics, have described a new breakthrough in understanding the way electrons travel around quantum dots. This might lead to promising new fabrication methods of novel quantum devices. Guodong Li and colleagues at the National Center for Nanoscience and Technology in Beijing carried out an experiment using self-assembled quantum dots and a two-dimensional...

2010-09-27 17:44:44

Getting an inside look at the center of a cell can be as easy as a needle prick, thanks to University of Illinois researchers who have developed a tiny needle to deliver a shot right to a cell's nucleus. Understanding the processes inside the nucleus of a cell, which houses DNA and is the site for transcribing genes, could lead to greater comprehension of genetics and the factors that regulate expression. Scientists have used proteins or dyes to track activity in the nucleus, but those can be...

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2010-08-25 19:28:25

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."We were able to fabricate hollow, plastic microneedles using a laser-based rapid-prototyping approach," says Dr. Roger Narayan, one of the lead researchers, "and found...


Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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