Showing Spotlights 1369 - 1376 of 1458 in category All (newest first):
Electrochromic devices based on tungsten oxide
An electrochromic display is one of the most attractive candidates for paper-like displays, so called electronic paper, which will be the next generation display, owing to attributes such as thin and flexible materials, low-power consumption, and fast switching times.
Vibrational in situ analysis of individual molecules
Single molecule Raman spectroscopy of molecules on metal surfaces was achieved by means of optical field-enhancement from a scanning probe tip. This was made possible by the optical antenna configuration formed by optical coupling between metallic tip and the substrate.
Natural polymer nanofibers for cartilage repair
Scientists at the University of Washington are developing natural polymer based nanofibers using electrospinning to mimic the native extracellular matrix of cartilage in terms of microstructure, mechanical properties, and chemical composition. This reesearch holds great implication for the generation of functional cartilage tissues to help the millions of people who suffer from degeneration of articular cartilage due to primary osteoarthritis or trauma.
A novel approach for the design of fluorescent sensors
Researchers in Germany report a novel approach for the design of environmental sensors based on fluorescence interference contrast (FLIC) of semiconductor nanocrystals near a reflecting silicon surface. Their method is based on nanocrystals incorporated into polymer layers grafted onto reflecting surfaces.
Acoustic sensors made from magnetic nanowires
Researchers took inspiration from the packaging and transduction processes of the cochlea and cilia in the inner ear to design acoustic sensors made from nanowires. Specifically, they used nanowires of magnetostrictive materials as artificial cilia to sense acoustic signals. Any acoustic sensor application may benefit from this work.
Novel use of polymer nanofibers as filters for chemical warfare defense
Researchers in Singapore functionalized a polymer nanofiber membrane to capture chemical warfare agents such as nerve agents. The nanofibers in the membrane act as a substrate on which the nerve agents get physically adsorbed followed by chemical decomposition.
A simple method for filtering gold and silver out of water with carbon nanotubes
Silver single crystals were facilely synthesized on a large-scale with good reproducibility in water at room temperature in the presence of carboxyl-functionalized carbon nanotubes, without any additional reducing agent/electrochemical reducing, microwave, sonication or irradiations.
3-dimensional nanowire networks make for ultrasensitive and highly selective gas sensors
The sensitivity of solid-state gas sensors can be improved if the surface-to-volume ratio of the material used for the sensor is increased. An international group of researchers demonstrated that three-dimensional tungsten oxide nanowire networks can serve as a high-surface area material for building ultrasensitive and highly selective gas sensors. The results highlight that the 3-D nanowires technology can be adopted for the development of gas sensors with performances suitable for practical applications.