Optofluidic Raman spectroscopy for chemical analysis and Raman spectroscopy bio-sensor for tissue analysis

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  • Date: Nov 20, 2013 - 15:00 - 16:00 (local time)
  • Presenter: Dr. Praveen Cheriyan AshokThermo
  • Categories: Raman / Infrared Spectroscopy
thumbnail image: Optofluidic Raman spectroscopy for chemical analysis and Raman spectroscopy bio-sensor for tissue analysis

Optofluidic Raman spectroscopy for chemical analysis and
Raman spectroscopy bio-sensor for tissue analysis

Broadcast on November 20, 2013 
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Raman spectroscopy is a powerful spectroscopic tool in the field of bio-chemical analytics for chemical fingerprinting. The ability of this technique to achieve multi-component detection makes this a technique with high chemical specificity. However the weak cross-section of Raman scattering makes it extremely important to have sensitive detectors and efficient optical systems that ensures highest optical throughput for Raman photons while rejecting as much background luminescence as possible. Recent technological advances in sources, detectors and probes make it possible to reduce the form factor of Raman instruments which allows field portability for chemical analysis and clinical diagnosis. This talk addresses two aspects of Raman spectroscopy in chemical analysis and clinical diagnosis.

The first part of this talk details the realisation of a completely optical alignment-free, compact optofluidic device to perform Raman spectroscopy from small volume (~10 microliters) of fluids. The use of this device for various analyte detection and reaction monitoring would be detailed. Further, the use of this device in food and drinks industry would be detailed with examples of using this device for Scotch whisky analysis and detecting toxicity in alcoholic beverages.

The second part of this talk details a Raman spectroscopy bio-sensor which was designed to be integrated with a surgical robot for tissue analysis. The design constraints to achieve such a system would be detailed and would discuss the issue of data representation when using Raman spectroscopy for clinical diagnostics.

Key Learning Objectives

  • Microfluidic Raman spectroscopy
    • Analytical Chemistry
    • Food and drink
  • Fibre Raman probe
    • Clinical diagnostics
    • Optical biopsy

Your Presenter


Praveen Cheriyan Ashok

Post-doctoral Fellow
Optical Manipulation Group
School of Physics & Astronomy
University of St Andrews

Praveen Cheriyan Ashok: Biography

Dr. Praveen Cheriyan Ashok is a post-doctoral fellow in the optical manipulation group of University of St Andrews. He obtained his masters in Photonics from Cochin University of Science and Technology (India) in 2008 and PhD from University of St Andrews (Scotland) in 2011. His research focuses on developing spectroscopic and imaging techniques for bio-medical diagnostics and chemical sensing. He is mainly interested in techniques such as Raman spectroscopy, Optical Coherence Tomography and microfluidics.


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In association with:
Pittcon 2014

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