Latest quantum dots Stories
U.S. scientists say they've discovered quantum dot nanoparticles can penetrate skin if there's an abrasion, raising new nanotechnology safety concerns. North Carolina State University researchers said the finding provides insight into potential workplace concerns for healthcare workers or individuals involved in the manufacturing of quantum dots or doing research on potential biomedical applications of the tiny nanoparticles. While the study shows that quantum dots of different sizes,...
Many researchers and start-up companies are relying on new designs that exploit nanostructures (materials produced on a scale of a billionth of a meter) in a race to make solar cells cheaper and more efficient. Using nanotechnology, researchers can test and control how a material generates, captures, transports, and stores free electrons.There are two unique and hopefully promising methods using nanotechnology for engineering solar cell materials. One uses thin films of metal oxide...
By Jain, Kewal K Background: Nanobiotechnologies are being applied to molecular diagnostics and several technologies are in development. Methods: This review describes nanobiotechnologies that are already incorporated in molecular diagnostics or have potential applications in clinical diagnosis. Selected promising technologies from published literature as well as some technologies that are in commercial development but have not been reported are included. Results: Nanotechnologies enable...
HOUSTON, Oct. 4, 2005 -- Using a method for assessing the premiums that companies pay for insurance, a team of scientists and insurance experts have concluded that the manufacturing processes for five, near-market nanomaterials -- including quantum dots, carbon nanotubes and buckyballs -- present fewer risks to the environment than some common industrial processes like oil refining. For two of the nanomaterials "“ nanotubes and alumoxane nanoparticles -- manufacturing risks were comparable...
Researchers at the University of Pennsylvania may not have turned lead into gold as alchemists once sought to do, but they did turn lead and selenium nanocrystals into solids with remarkable physical properties. In the October 5 edition of Physical Review Letters, online now, physicists Hugo E. Romero and Marija Drndic describe how they developed am artificial solid that can be transformed from an insulator to a semiconductor. The Penn physicists are among many modern researchers who have...
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.Rice's study, which was conducted under the auspices of the Center for Biological and Environmental Nanotechnology (CBEN), is published online and slated to appear in the October issue of the journal...
HOUSTON, Aug. 1, 2005 "“ Researchers from Rice University's Center for Biological and Environmental Nanotechnology (CBEN) have developed a "smart" beacon hundreds of times smaller than a human cell that is programmed to light up only when activated by specific proteases. Altered expression of particular proteases is a common hallmark of cancer, atherosclerosis, and many other diseases. In the September issue of the journal Biochemical and Biophysical Research Communications, lead...
In what may be one of the first medical uses of nanotechnology, a chemist and a doctor who specializes in infectious childhood diseases have joined forces to create an early detection method for a respiratory virus that is the most common cause of hospitalization among children under five.Respiratory syncytial virus (RSV) sends about 120,000 children to the hospital in the United States each year. Although it is only life-threatening in one case out of every 100, it infects virtually all...
