Mathew M. Maye, associate professor of chemistry, has been awarded a three-year, $360,000 grant from the National Science Foundation (NSF). The award supports his ongoing work with metal stainless alloy nanostructures, the results of which may impact gas storage, heterogeneous catalysis, and rechargeable lithium-ion batteries.
Electromagnetic radiation and mechanical vibrations of matter interact and exchange energy at the nanoscale. The experimental basis to study such interactions with precision is still being established. Researchers have now designed a silicon 1D Optomechanical crystal built up so that it allows to localize in a stable way both phonons and photons.
The structure - a layer of graphite flakes and an underlying carbon foam - is a porous, insulating material structure that floats on water. When sunlight hits the structure's surface, it creates a hotspot in the graphite, drawing water up through the material's pores, where it evaporates as steam.
A new study from MIT materials scientists reveals that gold nanoparticles enter cells by taking advantage of a route normally used in vesicle-vesicle fusion, a crucial process that allows signal transmission between neurons. They describe in detail the mechanism by which these nanoparticles are able to fuse with a membrane.
Nearly all electronics require devices called oscillators that create precise frequencies - frequencies used to keep time in wristwatches or to transmit reliable signals to radios. For nearly a century, these oscillators have relied upon quartz crystals to provide a frequency reference, much like a tuning fork is used as a reference to tune a piano. A new approach could ultimately replace the quartz crystal frequency reference - technology in use since the 1920s.
Researchers have demonstrated that an array of novel gold, pillar-bowtie nanoantennas can be used like traditional photographic film to record light for distances that are much smaller than the wavelength of light. A standard optical microscope acts as a 'nanocamera' whereas the pillar-bowtie nanoantennas are the analogous film.