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  • Volume 54, Issue 04

    • Volume 54, Issue 04

    More content from Volume 54, Issue 04

    Content Dam Lfw Print Articles 2018 04 1804lfw Nb F3
    Integrating microfluidic channels with titanium dioxide metasurfaces creates displays with distinct and high-resolution tunable colors and rapid transition time.
    April 1, 2018
    Content Dam Lfw Print Articles 2018 04 1804lfw Nb F1
    Quantum-dot excited states in 3D have been imaged using a single-molecule absorption scanning-tunneling microscope.
    April 1, 2018
    Conard Holton2
    The hottest technology trends include artificial intelligence, robotics, quantum communications, AR/VR, and the Internet of Things (IoT).
    April 1, 2018
    Barbara G 720
    The global laser market reported a 10% increase in medical lasers from 2016 to 2017 overall, and during that same time period revenue growth of 18% in lasers for aesthetic applications...
    April 1, 2018
    FIGURE 1. Multicolor switched excitation and emission light paths in a fluorescence microscope differ according to configuration: Pinkel uses fixed multiband dichroic and multiband emission filters (a), Sedat uses a fixed multiband dichroic filter and a high-speed emission filter wheel (b), and Incite uses a high-speed simultaneous dichroic and emission filter switcher (c).
    High-speed filter switching provides improvements equal to doubling or quadrupling of camera quantum efficiency, with reduced risk of specimen phototoxicity.
    April 1, 2018
    FIGURE 1. The August 2017 Gartner Hype Cycle of emerging technologies from Gartner, Inc.
    Freeform-optics design software and virtual prototyping are accelerating the progress in bringing AR and VR headsets to market.
    April 1, 2018
    Courtesy of Double Helix
    FIGURE 1. The point-spread function (PSF) of a standard microscope (a) is modified by inserting a double-helix phase mask in the SPINDLE module (b), where the pupil plane of the objective is imaged; unlike the standard PSF, the DH-PSF exhibits two lobes that are oriented at different angles based on the axial location of the object (c).
    Engineered phase plates convert 2D microscopes into 3D nanoscale molecular imagers.
    April 1, 2018
    FIGURE 1. Nonlinear figure of merit (d2/n3) vs. transparency range is plotted for various mid-infrared nonlinear optical (NLO) crystals.
    Advances in mid-IR nonlinear optical materials have led to low-loss, high-figure-of-merit crystals with broad transparency that greatly expand the wavelength coverage of highly...
    April 1, 2018
    (Image credit: www.iotroadmap.com)
    FIGURE 1. In an IoT scenario, every object, animal, person, or electronic device can enter the system network, offering a set of data that is transmitted, analyzed in the cloud, and networked back to the environment.
    Without photonics, the interconnectedness of physical devices and their ability to share and analyze information about their surroundings would not be possible.
    April 1, 2018
    Antiviral effectiveness of 222 nm far-UVC light produced by an excimer lamp (inset) is shown in terms of fractional survival as a function of dose; the means and standard deviation for each dose are shown in blue.
    Use of overhead far-ultraviolet C light in public spaces could provide a powerful check on seasonal influenza epidemics, as well as influenza pandemics.
    April 1, 2018
    Content Dam Lfw Print Articles 2018 04 1804lfw Nb F4
    Physicists have resolved the response of electrons in gallium arsenide at the attosecond time scale.
    April 1, 2018
    A dual-frequency-comb-based interferometer to measure absolute distance combines three different methods: time-of-flight (TOF) measurement, synthetic-wavelength interferometry (SWI), and carrier-wave interferometry (CWI). From the TOF method (a), the multiple integer number of half synthetic wavelengths in the SWI method (b) can be found; similarly, from the SWI method, the multiple integer number of half carrier wavelengths in the CWI method (c) can be found.
    A distance-measurement system that uses a phase-stable dual-optical frequency comb setup combines time-of-flight measurement, synthetic-wavelength interferometry, and carrier-...
    April 1, 2018