When smooth surfaces that hate water approach each other underwater, scientists have observed that they snap into contact. This is apparently due to attractive forces that extend for tens to hundreds of nanometers.
Scientists at the University of North Carolina at Chapel Hill have developed a new method to create computed tomography (CT) images using carbon nanotube x-rays that works much faster than traditional scanners and uses less peak power.
In a continuing effort to find out if the tiniest airborne particles pose a health risk, University of Rochester Medical Center scientists showed that when rats breathe in nano-sized materials they follow a rapid and efficient pathway from the nasal cavity to several regions of the brain.
Georgia Tech researchers have found a way to shrink all the sensing power of sophisticated biosensors, such as sensors that can detect trace amounts of a chemical in a water supply or a substance in your blood, onto a single microchip.
Engineers at Purdue University have developed a technique to grow individual carbon nanotubes vertically on top of a silicon wafer, a step toward making advanced electronics, wireless devices and sensors using nanotubes by stacking circuits and components in layers.
By combining peptide-based polymers with modified iron oxide nanoparticles, researchers have developed nanoparticles that can be manipulated in a magnetic field and that can respond to changes in pH and other physiologic stimuli.
One of the hopes for nanotechnology is that researchers will be able to harness the power of the nanoscale to develop faster, more sensitive and less expensive assay techniques for use in diagnostic and drug discovery applications.
Having the ability to measure pH in a tissue without the need for a biopsy could provide clinicians with a rapid method for determining if a suspicious growth is malignant. Two novel nanoparticles raise the distinct possibility that making such measurements could soon be reality.
The August issue of nanoRISK looks at nanotechnology applications in the military; the use of nanoparticles in the cosmetics industry; reports on a new, collaborative approach to nanotoxicology at the National University of Singapore; and numerous briefs on papers, initiatives, upcoming events and new book releases.