John Toon, Georgia Tech

Implantation of a stent-like flow diverter can offer one option for less invasive treatment of brain aneurysms — bulges in blood vessels — but the procedure requires frequent monitoring while the vessels heal. Now, a multi-university research team has demonstrated proof-of-concept for a highly flexible and stretchable sensor that could be integrated with the flow…

The first direct comparison of in vitro and in vivo screening techniques for identifying nanoparticles that may be used to transport therapeutic molecules into cells shows that testing in lab dishes isn’t much help in predicting which nanoparticles will successfully enter the cells of living animals. The new study demonstrated the advantages of an in…

“Hairy” nanoparticles made with light-sensitive materials that assemble themselves could one day become “nano-carriers” providing doctors a new way to simultaneously introduce both therapeutic drugs and cancer-fighting heat into tumors. That’s one potential application for a new technology that combines water-repelling yet light-sensitive and water-absorbing materials into polymeric nano-reactors for creating photo-responsive gold nanoparticles. Light…

A nanostructured gate dielectric may have addressed the most significant obstacle to expanding the use of organic semiconductors for thin-film transistors. The structure, composed of a fluoropolymer layer followed by a nanolaminate made from two metal oxide materials, serves as gate dielectric and simultaneously protects the organic semiconductor — which had previously been vulnerable to…

An international team of scientists has developed a new way to produce single-layer graphene from a simple precursor: ethene — also known as ethylene — the smallest alkene molecule, which contains just two atoms of carbon. By heating the ethene in stages to a temperature of slightly more than 700 degrees Celsius — hotter than…

Using tiny snippets of DNA as “barcodes,” researchers have developed a new technique for rapidly screening the ability of nanoparticles to selectively deliver therapeutic genes to specific organs of the body. The technique could accelerate the development and use of gene therapies for such killers as heart disease, cancer and Parkinson’s disease. Genetic therapies, such…

Materials scientists have developed a new strategy for crafting one-dimensional nanorods from a wide range of precursor materials. Based on a cellulose backbone, the system relies on the growth of block copolymer “arms” that help create a compartment to serve as a nanometer-scale chemical reactor. The outer blocks of the arms prevent aggregation of the…

A research team from the Georgia Institute of Technology and ExxonMobil has demonstrated a new carbon-based molecular sieve membrane that could dramatically reduce the energy required to separate a class of hydrocarbon molecules known as alkyl aromatics. The new material is based on polymer hollow fibers treated to retain their structure — and pore sizes…

Using a unique single-molecule force measurement tool, a research team has developed a clearer understanding of how platelets sense the mechanical forces they encounter during bleeding to initiate the cascading process that leads to blood clotting. Beyond providing a better understanding of this vital bodily process, research into a mechanoreceptor molecule that triggers clotting could…

Baratunde Cola would like to put sand into your computer. Not beach sand, but silicon dioxide nanoparticles coated with a high dielectric constant polymer to inexpensively provide improved cooling for increasingly power-hungry electronic devices. The silicon dioxide doesn’t do the cooling itself. Instead, the unique surface properties of the coated nanoscale material conduct the heat…