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Nanoparticles

PureMadi project leaders James Smith and Dr. Rebecca Dillingham

Silver is known for its antibacterial qualities, and has thus found its way into water filters created at institutions such as Stanford and McGill universities. Given that these filters are often used in developing nations, however, it would be nice if they could also contribute to the local economy – instead of being just one more thing that’s brought in from outside. Well, that’s just the idea behind the University of Virginia’s PureMadi filters and MadiDrops.  Read More

The nanoparticle with a core of the element actinium, surrounded by four layers of materia...

Gold nanoparticles have already shown promise in precisely highlighting brain tumors, “blowing up” individual diseased cells, and developing a lung cancer breath test. Now researchers have created gold nanoparticles that allow an alpha particle-emitting element to be directed to small cancer tumors. The researchers say the gold coating keeps the powerful radioactive particles in place at the cancer site so they do negligible damage to healthy organs and tissue.  Read More

The sea urchin has revealed a way to ceaply and quickly convert CO2 into calcium carbonate...

Carbon capture and sequestration in underground reservoirs isn’t the most practical or cost effective way to reduce atmospheric CO2 levels. It would be much simpler if CO2 could be quickly and cheaply converted into a harmless, solid mineral before it is released into the atmosphere. A team from the U.K.’s Newcastle University may have stumbled across a way to achieve this thanks to the humble sea urchin.  Read More

Spherical silicon nanoparticles about 10 nanometers in diameter that can generate hydrogen...

Researchers at the University of Buffalo have created spherical silicon nanoparticles they claim could lead to hydrogen generation on demand becoming a “just add water” affair. When the particles are combined with water, they rapidly form hydrogen and silicic acid, a nontoxic byproduct, in a reaction that requires no light, heat or electricity. In experiments, the hydrogen produced was shown to be relatively pure by successfully being used to power a small fan via a small fuel cell.  Read More

Rice University research scientist Ekaterina Lukianova-Hleb adjusts equipment used in expe...

U.S. scientists are developing a technique that will target and kill cancer cells while simultaneously treating others in the same sample. Centered on fine-tuning the use of cancer destroying nanobubbles, the research holds promise for treating cancer patients in a way that’s far more targeted than chemotherapy.  Read More

Rice University graduate student Oara Neumann (left) and scientist Naomi Halas are co-auth...

A team of researchers at Rice University has developed a new technology that uses light-absorbing nanoparticles to convert solar energy directly into steam. Even though it is already significantly more efficient than solar panels at producing electricity, the technology will likely find its first applications in low-cost sanitation, water purification and human waste treatment for the developing world.  Read More

A 750x view of the Poly(lactide-co-glycolide) nanoparticles used in the study (Image: Lonn...

Good news may be on the way for sufferers of multiple sclerosis – a team of scientists from Illinois-based Northwestern University, the University of Sydney, and the Myelin Repair Foundation in California have succeeded in halting the effects of the disease in lab mice. It all comes down to using nanoparticles to trick the immune system.  Read More

A hybrid nanomaterial synthesized by combining copper sulfide nanoparticles and SWNTs can ...

We’ve seen nanomaterials that can be used to convert light into electricity and others that can convert heat into electricity. Now researchers from the University of Texas at Arlington and Louisana Tech University have created a hybrid nanomaterial that can do both. By pairing the material with microchips, the researchers say it could be used in self-powered sensors, low-power electronic devices, and biomedical implants.  Read More

A male Giant Blue Morpho (Photo: Jo McCulty, courtesy of Ohio State University)

Butterfly wings cannot be very far behind geckos' toes so far as sources of inspiration for biomimicry research goes. Various properties of the wings of lepidopterans have triggered research into banknote forgery prevention, light reflection and solar cells. New research from Ohio State University suggests the delicate membranes may hold clues to dirt-resistance surfaces.  Read More

A rather larger laser (Photo: Andrea Pacelli)

Researchers at Northwestern University have developed a laser the size of a virus particle that can operate at room temperature. The "nanolaser," which uses gold nanoparticles instead of mirrors, is claimed to be the first demonstration to make use of a so-called bowtie arrangement of metal nanoparticles, though nano-scale lasers have been previously demonstrated.  Read More

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