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Latest Colloidal gold Stories

2010-02-24 11:45:06

Chemists at the University of Helsinki have managed to manufacture new polymer-stabilized silver nanoparticles. The result is significant because the antimicrobial characteristics of silver are used in textiles, floor coatings and paints even though the impact on health of silver nanoparticles are not entirely known. Finnish researchers now think that exposure to silver can be reduced by chemically binding the nanoparticles to polymers. The research results will soon be published in a leading...

2010-02-16 11:08:48

Taking gold nanoparticles to the cancer cell and hitting them with a laser has been shown to be a promising tool in fighting cancer, but what about cancers that occur in places where a laser light can't reach? Scientists at the Georgia Institute of Technology have shown that by directing gold nanoparticles into the nuclei of cancer cells, they can not only prevent them from multiplying, but can kill them where they lurk. The research appeared as a communication in the February 10 edition of...

2010-02-11 03:30:00

LONDON, February 11 /PRNewswire/ -- - World Gold Council Research Paper Demonstrates Important Applications in Development Using Gold Nanoparticles World Gold Council (WGC) has today published 'Gold for Good: Gold and nanotechnology in the age of innovation', a research paper detailing new scientific and technological innovations using gold. The report, which was produced in conjunction with Cientifica Ltd, the world's leading source of global business and investor intelligence...

2009-08-11 16:38:30

As a result of a major inter-laboratory study, the standards body ASTM International has been able to update its guidelines for a commonly used technique for measuring the size of nanoparticles in solutions. The study, which was organized principally by researchers from the National Institute of Standards and Technology (NIST) and the Nanotechnology Characterization Laboratory of the National Cancer Institute, enabled updated guidelines that now include statistically evaluated data on the...

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2009-07-28 10:21:48

Nanoparticles are being developed to perform a wide range of medical uses -- imaging tumors, carrying drugs, delivering pulses of heat. Rather than settling for just one of these, researchers at the University of Washington have combined two nanoparticles in one tiny package.The result is the first structure that creates a multipurpose nanotechnology tool for medical imaging and therapy. The structure is described in a paper published online this week in the journal Nature...

2009-07-16 08:59:47

At a technical breakfast, Romain Quidant presented his research into the detection and treatment of cancer using gold nanoparticles illuminated with laser light. Quidant, who was recently awarded the Fresnel Prize 2009 that recognizes the highest level of excellence amongst emerging researchers in the field of photonics, is an ICREA researcher at the UPC's Institute of Photonic Sciences (ICFO) and a fellow of the Cellex Foundation Barcelona."Drops" of gold that burn tumorsQuidant is among the...

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2009-03-23 08:15:00

Researchers are describing a long-awaited advance toward applying the marvels of nanotechnology in the battle against cancer. They have developed the first hollow gold nanospheres "” smaller than the finest flecks of dust "” that search out and "cook" cancer cells. The cancer-destroying nanospheres show particular promise as a minimally invasive future treatment for malignant melanoma, the most serious form of skin cancer, the researchers say. Melanoma now causes more than 8,000...

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2009-01-05 08:06:38

Researchers found a more accurate way to deliver cancer drugs, by harnessing the power of gold nanoparticles. They wrote in the journal ACS Nano that the system could release a number of drugs in a specific part of the body at desired times. The device relies on the fact that different particles melt when exposed to different levels of infrared light. Therefore, different drugs on the particles could be released in a controlled way. Researchers say delivering drugs directly to a specific...

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2008-12-30 12:11:39

Using tiny gold particles and infrared light, MIT researchers have developed a drug-delivery system that allows multiple drugs to be released in a controlled fashion. Such a system could one day be used to provide more control when battling diseases commonly treated with more than one drug, according to the researchers. "With a lot of diseases, especially cancer and AIDS, you get a synergistic effect with more than one drug," said Kimberly Hamad-Schifferli, assistant professor of biological...

2008-10-27 12:00:21

U.S. scientists say they have developed a method that makes and patterns nanoscale wires and other devices now made with expensive lithographic tools. "You can, in principle, build almost any types of architectures you want at nanoscale," said Cornell University Associate Professor Dan Luo and postdoctoral researcher Wenlong Cheng. They said they began with gold nanoparticles about 12 nanometers in diameter suspended in water. To suspend metal particles in water, the researchers coated...