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“#Light from inside the tunnel” Light emission (blue) from the current associated with light-induced electronic tunneling inside a transparent dielectric material due to excitation with a strong optical field (red). Credit: Uni Rostock, B. Liewehr Steering and monitoring the light-driven motion of electrons inside matter on the time-scale of a single optical cycle is a…
“#Versatile LED irradiation system: From disinfection to medical treatments” Modular LED irradiation system equipped with UVC LEDs for disinfection. Credit: FBH/P. Immerz For disinfection purposes, a compact system can be equipped with UV LEDs to eliminate germs on critical surfaces such as mobile phones. It can also be assembled with LEDs providing the optimum emission…
“#Researchers directly obtain 3-D, full-color images with conventional microscope” Imaging of a compound eye at different depths of (a) 14 μm and (b) 28 μm acquired with FC-WFM method, OS with FC-SIM method, and the OS in DOF with proposed FC-WFM-Deep, respectively. Credit: XIOM Conventional wide-field microscopy (WFM) cannot provide optical sectioning (OS) images that…
“#Cartwheeling light reveals new optical phenomenon” A model by Rice University scientists shows how two positively charged spheres attached to springs are attracted to the electric field of light. Due to the motion of the spheres, the spring system scatters light at different energies when irradiated with clockwise and anticlockwise trochoidal waves. Credit: Link Research…
“#Plug-and-play lens simplifies adaptive optics for microscopy” Researchers have developed a new plug-and-play lens that can add adaptive optics correction to commercial optical microscopes. The image shows a section of mouse brain acquired with a light sheet microscope and corrected with the adaptive lens. Credit: T. Furieri (CNR-IFN), G. Calisei and A. Bassi (Politecnico of…
“#Innovative smartphone-camera adaptation images melanoma and non-melanoma” Two dermascope implementations. The USB-camera-based PMSI and PWLI dermascope is shown in (a) and (b). (a) Various components of the handheld imaging module (the USB camera is hidden behind the imaging polarizer) and (b) the imaging module paired with the smartphone camera. The smartphone-camera-based PMSI and PWLI dermascope…
“#New compressor delivers above-terawatt 1.5-cycle pulses at kilohertz repetition rate” Impression of the compressor beamline. The inset shows the measured shape and beam profile of the 1.5-cycle pulses. Credit: Forschungsverbund Berlin e.V. (FVB) Researchers at the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) have reached a new milestone in few-cycle pulse…
“#New design for ‘optical ruler’ could revolutionize clocks, telescopes, telecommunications” Experimental setup to generate a set of stable frequencies in a cryogenically cooled laser microresonator frequency comb. The ring-shaped microresonator, small enough to fit on a microchip, operates at very low laser power and is made from the semiconductor aluminum gallium arsenide. Credit: NIST Just…
“#Microbubbles controlled by acoustical tweezers for highly localized drug release” Local release, assisted by an acoustic trap, of nanoparticles transported by microbubbles. Credit: Diego Baresch, Institut de mécanique et d’ingénierie de Bordeaux (CNRS/Université de Bordeaux/Arts et Métiers Paristech/Bordeaux INP) Microbubbles are used every day as contrast agents in medical sonography, and are the subject of…
“#Strainoptronics: A new way to control photons” Artistic representation of a strain engineered 2D photodetector on silicon photonic circuit. Credit: George Washington University Researchers discovered a new way to engineer optoelectronic devices by stretching a two-dimensional material on top of a silicon photonic platform. Using this method, coined strainoptronics by a team led by George…