1. Articles from N. K. Sahoo

    1-2 of 2
    1. Perspectives of optical coherence tomography imaging and Raman spectroscopy in cancer diagnosis

      Perspectives of optical coherence tomography imaging and Raman spectroscopy in cancer diagnosis

      Biomedical optical imaging and optical spectroscopy are rapidly emerging as strong contenders for non-invasive optical biopsy. In biomedical imaging, Optical Coherence Tomography (OCT) is an established imaging modality for non-contact depth-resolved three-dimensional imaging with micrometer scale resolution. OCT provides label-free micro-structural morphological information of the tissue. Raman spectroscopy is a complementary tool for obtaining molecular-specific information for diagnosis. This article provides a brief overview of the underlying principles of OCT and Raman spectroscopy, their instrumentation with representative latest developments in cancer diagnosis. 

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      Mentions: K. Divakar Rao
    2. Optical coherence tomography for shape and radius of curvature measurements of deeply curved machined metallic surfaces: a comparison with two-beam laser interferometry

      Optical coherence tomography for shape and radius of curvature measurements of deeply curved machined metallic surfaces: a comparison with two-beam laser interferometry

      An application of optical coherence tomography (OCT) for measuring shape and the radius of curvature of deeply curved metallic surfaces in precision mechanical components is demonstrated. Measurements carried out by OCT technique on concave and convex hemispherical metallic surfaces generated by diamond turning process is presented. The technique is compared with a two-beam laser interferometric method for determinations of shape errors and radius of curvature. It is shown that OCT is a useful tool for three-dimensional shape determinations for deeply curved surfaces such as hemispheres and has advantages over two-beam laser interferometric method.

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      Mentions: K. Divakar Rao
    1-2 of 2
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  2. Topics in the News

    1. (2 articles) K. Divakar Rao
    2. (1 articles) University of Sydney
    3. (1 articles) University of Zurich
    4. (1 articles) UCSD
    5. (1 articles) University of Pittsburgh
    6. (1 articles) L V Prasad Eye Institute
    7. (1 articles) Giuseppe Querques
    8. (1 articles) Carl Zeiss Meditec
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