Applied Physics B

, Volume 117, Issue 1, pp 445–451

QCL-based TDLAS sensor for detection of NO toward emission measurements from ovarian cancer cells

  • M. Köhring
  • S. Huang
  • M. Jahjah
  • W. Jiang
  • W. Ren
  • U. Willer
  • C. Caneba
  • L. Yang
  • D. Nagrath
  • W. Schade
  • F. K. Tittel
Article

DOI: 10.1007/s00340-014-5853-7

Cite this article as:
Köhring, M., Huang, S., Jahjah, M. et al. Appl. Phys. B (2014) 117: 445. doi:10.1007/s00340-014-5853-7

Abstract

The development of a sensitive sensor for detecting nitric oxide (NO) emissions from biological samples is reported. The sensor is based on tunable diode laser absorption spectroscopy (TDLAS) using a continuous wave, thermoelectrically cooled quantum cascade laser (QCL) and a 100-m astigmatic Herriot cell. A 2f-wavelength modulation spectroscopy technique was used to obtain QCL-based TDLAS NO emission measurements with an optimum signal-to-noise ratio. An absorption line at 1,900.076 cm−1 was targeted to measure NO with a minimum detection limit of 124 ppt. Positive control measurements with the NO donor DETA NONOate were performed to determine and optimize the sensor performance for measurements of biological samples. Our measurements with NO donor show the potential suitability of the sensor for monitoring NO emission from cancer cells for biological investigations.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • M. Köhring
    • 1
    • 2
  • S. Huang
    • 1
    • 3
  • M. Jahjah
    • 1
  • W. Jiang
    • 1
  • W. Ren
    • 1
  • U. Willer
    • 4
  • C. Caneba
    • 1
  • L. Yang
    • 1
  • D. Nagrath
    • 1
  • W. Schade
    • 2
  • F. K. Tittel
    • 1
  1. 1.Rice UniversityHoustonUSA
  2. 2.Fraunhofer Heinrich-Hertz-InstituteGoslarGermany
  3. 3.Princeton UniversityPrincetonUSA
  4. 4.EFZNClausthal University of TechnologyGoslarGermany

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