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  • Volume 6, Issue 4

    • Volume 6, Issue 4

    Finger Leather
    Many coral species, which are key for sustaining tourism, fishing, and human activity, may not survive beyond the end of this century due to ocean warming and acidification.
    July 17, 2013
    Image courtesy of Rhoda Baer, National Eye Institute
    National Eye Institute scientists observe ocular tissue samples under a laser scanning microscope.
    How will the United States' fiscal struggles impact biophotonics development and the life sciences driven by these technologies?
    July 17, 2013
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    Designed to expand the utility of super-resolution optical imaging methods PALM and STORM, a new adaptive optics approach enables the localization of a single emitter in all three...
    July 17, 2013
    (Image courtesy of BaySpec)
    FIGURE 1. BaySpec's Nomadic confocal Raman microscope (a) is simultaneously equipped with three excitation sources from the visible to near-infrared: 532, 785, and 1064 nm. This system provides chemical analysis and classification. In a forensics application (b), for example, Nomadic's 1064-Raman system can map black ink on paper because inks are highly fluorescent.
    Advanced excitation and detection methods enable exploration of more molecular biology with Raman.
    July 17, 2013
    FIGURE 1. Smart dye makes cancer cells glow by conjugating to a probing ligand such as an antibody, aptamer, or peptide.
    A major challenge in optical screening of cancer is to locate tumors deep within organs. "Smart" contrast agents -- along with novel, efficient optical tomography instrumentation...
    July 17, 2013

    More content from Volume 6, Issue 4

    FIGURE 1. (a) The VCSEL is fabricated using semiconductor processing techniques (b) on wafers yielding many (c) single VCSEL devices. (d) Traditional OCT swept-source technologies tune many laser modes under the tunable filter envelope. (e) The VCSEL differs from previous technologies in that it tunes a single longitudinal mode. (F) A comparison of OCT technologies shows that the VCSEL does not lose appreciable imaging sensitivity over a 12 mm imaging range while previous technologies show significant sensitivity loss over only a few millimeters. (g) The VCSEL can be operated to achieve a 1.5 m OCT imaging range at high imaging speeds, much longer than previous OCT technologies.
    Light sources based on vertical cavity surface-emitting laser (VCSEL) technology enable optical coherence tomography (OCT) to achieve long imaging range, high speed, and flexibility...
    July 17, 2013
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    Biophotonics was a major theme at this 40th anniversary edition of the biennial mega-event LASER World of Photonics trade fair and World of Photonics Congress (May 13-16, 2013...
    July 17, 2013
    The U.S.'s National Photonics Initiative, a collaboration involving five industry associations, has an equal number of working groups, including one dedicated to health and medicine.
    Although the United States currently leads the world in biophotonics, other nations are making significant investments -- and as a result, the country has lost substantial global...
    July 17, 2013
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    By shining light of various colors through a nanoscale synthetic-polymer sphere, researchers have fashioned volcano-shaped nanostructures able to store precise amounts of other...
    July 17, 2013
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    For her PhD thesis, Aránzazu Jurío-Munárriz, a graduate student in computer engineering at the NUP/UPNA-Public University of Navarre in Spain, has improved two of the algorithms...
    July 17, 2013
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    An iPhone app and an optics-rich smartphone cradle are enabling sensitive yet inexpensive biosensing of toxins, proteins, bacteria, viruses, and other molecules.
    July 17, 2013
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    A new type of imaging probe is enabling real-time visualization of excitatory and inhibitory synapses that change as new memories are formed.
    July 17, 2013
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    Research in optical coherence tomography (OCT) technology has recently focused on development of ultrafast (>100 kHz A-line rate) Fourier domain OCT (FD-OCT).
    July 17, 2013
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    In a Market Focus session titled Medical and Aesthetic Lasers - the Future of Light-Tissue Interaction, presentations at OSA's Conference on Lasers and Electro-Optics (CLEO) 2013...
    July 17, 2013