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Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
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Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Published on: January 14, 2020

Prism fingerprint sensor that uses a holographic optical element

R D Bahuguna, T Corboline

    Applied Optics
    |December 4, 2010
    PubMed

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    IR Frequency Region: Fingerprint Region01:03

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    IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1.
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