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“#Discovery will allow more sophisticated work at nanoscale” Researchers led by a University of Houston engineer have reported a new way to stimulate fluid flow at nanoscale by using a small increase in temperature or voltage. Credit: ACS Applied Nano Materials The movement of fluids through small capillaries and channels is crucial for processes ranging…
“#Compact nanoscale textures reduce contact time of bouncing droplets” Examples of water-repellent insects equipped with high solid fraction nanoscale surface textures. (A) Optical and scanning electron microscopy (SEM) images of mosquito eyes, a springtail, and cicada wings showing the presence of high solid fraction nanoscale surface textures (Photo credit: L.W., Pennsylvania State University). (B) A…
“#Porous graphene ribbons doped with nitrogen for electronics and quantum computing” The individual building blocks are heated on a silver surface in order to synthesize a porous graphene ribbon that exhibits semiconducting properties and a ladder-like structure. In each rung of the ladder, two carbon atoms have been replaced with nitrogen atoms (blue). Credit: University…
“#Detecting hidden nanostructures by converting light into sound” A femtosecond pump laser ‘knocks’ at the opaque material (1), causing a high frequency acoustic wave to travel through the layers (2) until it reaches the buried grating lines. The acoustic waves are reflected at the grating and travel back (3) as a grating shaped wave. When…
“#Experiments confirm light-squeezing 2-D exciton-polaritons can exist” Researchers pinpoint the conditions for forming unusual 2D exciton-polaritons in TMDs. Credit: Fabien Vialla Measurements of the optical response of 2-D transition-metal dichalcogenides have now pinpointed real material systems in which a hypothesized light-squeezing quasiparticle can form. The 2-D exciton-polariton, which couples light to bound electron-hole pairs in…
“#2-D semiconductors found to be close-to-ideal fractional quantum Hall platform” A monolayer semiconductor is found to be a close-to-ideal platform for fractional quantum Hall state–a quantum liquid that emerges under large perpendicular magnetic fields. The image illustrates monolayer WSe2 hosting “composite fermions,” a quasi-particle that forms due to the strong interactions between electrons and is…
“#Magnonic nano-fibers opens the way towards new type of computers” The left panel shows a micrograph of a 50 nm wide YIG waveguide. The antenna allows for the excitation of spin waves which then propagate along the stripe. The right panel shows a zoomed in section of the waveguide and compares its size to the…
“#Team shows how to store data using 2-D materials instead of silicon chips” This illustrates how an experimental memory technology stores data by shifting the relative position of three atomically thin layers of metal, depicted as gold balls. The swirling colors reveal how a shift in the middle layer affects the motion of electrons in…
“#Researchers develop method for producing precision diffraction gratings” Diffraction grating produced with a hot scanning probe. The red line shows the surface profile of the grating. Credit: ETH Zurich / Nolan Lassaline Researchers at ETH Zurich have developed a method for the production of wavy surfaces with nanometer precision. In the future this method could…