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American Journal of Optics and Photonics

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Volume 7, Issue 1, March 2019

  • The Classical Double Slit Interference Experiment: A New Geometrical Approach

    Joseph Ivin Thomas

    Issue: Volume 7, Issue 1, March 2019
    Pages: 1-9
    Received: 2 March 2019
    Accepted: 9 April 2019
    Published: 7 May 2019
    DOI: 10.11648/j.ajop.20190701.11
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    Abstract: The double slit experiment was first conceived of by the English physician-physicist Thomas Young in 1801. It was the first demonstrative proof that light possesses a wave nature. In this experiment, light is made to pass through two very narrow slits that are spaced closely apart and a screen placed on the other side captures a pattern of alternat... Show More
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  • Germanium Based Two-Dimensional Photonic Crystals with Square Lattice

    Fairuz Aniqa Salwa, Muhammad Mominur Rahman, Muhammad Obaidur Rahman, Muhammad Abdul Mannan Chowdhury

    Issue: Volume 7, Issue 1, March 2019
    Pages: 10-17
    Received: 11 March 2019
    Accepted: 26 April 2019
    Published: 15 May 2019
    DOI: 10.11648/j.ajop.20190701.12
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    Abstract: Using the plane-wave expansion method, we study the polarization-dependent photonic band diagrams (transverse electric and transverse magnetic polarizations), surface plots, gap maps etc. of the two-dimensional photonic crystals with square lattice of germanium rods in air and vice versa. The obtained graphs for the two possible combinations are pr... Show More
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  • Antillatoxin (ATX) Time–Resolved Absorption and Resonance FT–IR and Raman Biospectroscopy and Density Functional Theory (DFT) Investigation of Vibronic–Mode Coupling Structure

    Alireza Heidari, Jennifer Esposito, Angela Caissutti

    Issue: Volume 7, Issue 1, March 2019
    Pages: 18-27
    Received: 8 April 2019
    Accepted: 3 June 2019
    Published: 13 July 2019
    DOI: 10.11648/j.ajop.20190701.13
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    Abstract: Antillatoxin (ATX) is a potent lipopeptide neurotoxin produced by the marine cyanobacterium Lyngbya majuscula. ATX activates voltage–gated sodium channels, which can cause cell depolarisation, NMDA–receptor over activity, excess calcium influx and neuronal necrosis. Parameters such as FT–IR and Raman vibrational wavelengths and intensities for sing... Show More
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