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    • Volume 57, Issue 07

    More content from Volume 57, Issue 07

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    Controlling van der Waals magnets on demand, which could pave the way toward significantly more efficient data storage and processing, has historically been difficult. But a new...
    July 21, 2021
    (Courtesy of Lei Xu, Nottingham Trent University)
    The new proof-of-concept technology is ultracompact, ultralight, and may one day enable IR imaging on standard glasses.
    Researchers have found that ultrathin and transparent semiconductor nanocrystals can convert IR light into the visible more efficiently than conventional methods.
    July 21, 2021
    (Courtesy of Lin Lab, Imperial College London)
    High-speed camera image of a common darter dragonfly righting itself from an upside-down position.
    The flight maneuvers of dragonflies could potentially boost the development of small aerial vehicles, ultimately enhancing applications including search and rescue efforts.
    July 21, 2021
    (Courtesy of S. Bancelin et al.)
    Multiphoton STED microscopy enhanced by adaptive optics captures the fine details of neuronal dendrites.
    A newly developed calibration method is bringing researchers deeper into biological tissue and at more precise levels than conventional STED microscopy technology.
    July 21, 2021
    FIGURE 1. A deep-UV laser contains a blue pump diode laser, the praseodymium laser crystal, a second-harmonic-generation (SHG) crystal, and a cavity output mirror (a); the result is a very compact device (b).
    A small laser based on a diode-pumped praseodymium crystal and second-harmonic generation is rugged and ready for applications in the field.
    July 21, 2021
    A structured array of photoluminescent nanopillars is a sensitive measure of force on a subcellular scale, here indicating the force applied by an adhered cardiomyocyte.
    A novel piezophototronic light nanoantenna array enables quantification of force on a subcellular level for true understanding of cardiomyocyte function.
    July 21, 2021
    FIGURE 1. An optical data transmission protocol inspired by ultra-wideband pulsed data coding has demonstrated the ability to communicate at 300 Mbit/s through 3.5 mm of porcine skin.
    Brain-machine interfaces are giving researchers a better look at the fundamental relationship between physiology and cognition, as well as neuropathology and neural plasticity...
    July 21, 2021
    Reprinted from reference 3, with authors’ permission
    FIGURE 1. Comparison of droplet formation rate and signal intensity for three speeds using each flow generation technique measured for a 500 nM resorufin solution on an epifluorescence microscope. Droplet streams for a syringe pump (red trace), a peristaltic pump (black trace), and a Venturi pump (blue trace) are shown.
    Agencies worldwide are pushing higher water quality standards; technological advances in systems using UV LEDs are helping hit the mark.
    July 21, 2021
    FIGURE 1. Side view of laser welded interface (a); the dark spots indicate voids due to mass transport. A serpentine channel is seen in (b) and a close-up plan view of the serpentine channel with weld lines on either side is seen in (c). The dark spots in the center of the weld line in the close-up are voids located above the interface.
    Two new techniques, laser welding and fast 2D processing, can be combined to make complex and functional vertical structures from glass and add economical singulation, paving ...
    July 21, 2021
    FIGURE 1. A freeform surface id defined in PROSurf by importing a CAD model.
    The process of manufacturing a freeform optic relies on the interplay between sophisticated fabrication and metrology tools, both hardware and software.
    July 21, 2021
    Production of lasers, displays, and other technologies could get a boost from the discovery of silicon’s strength.
    July 21, 2021
    Engineers could soon utilize new capabilities for applications including novel quantum computing, thanks to a new optical device that allows users to change individual photons...
    July 21, 2021
    A spectroscopic gemstone-screening instrument allows rapid separation of natural from synthetic diamonds. Shown are the experimental fluorescence spectra from natural, HPHT-grown, and CVD-grown diamonds. N3 fluorescence at 415 nm was only detected in natural diamonds.
    A UV-fluorescence spectroscopy-based instrument with a handheld probe identifies various types of diamonds, as well as diamond fakes such as corundum, spinel, and beryl.
    July 21, 2021
    Image originally printed in BioOptics World, March/April 2014 [3]
    FIGURE 1. Schematics demonstrate the setups of a typical FTIR microscope (a) and a QCL IR-SI microscope (b).
    The industry is on the verge of an infrared (IR) microscopy and spectroscopy revolution fueled by developments in quantum cascade laser (QCL) technology.
    July 13, 2021
    Courtesy of Lumenisity
    FIGURE 1. Fabrication of a hollow-core NANF fiber.
    Hollow-core fibers were in the spotlight again at the 2021 virtual Optical Fiber Communications Conference (OFC), but the focus has broadened.
    June 30, 2021
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    A strong revenue year may be in the works, but laser market modeling remains both art and econometric modeling.
    June 25, 2021