New tellurium based glasses for use in bio-sensing applications

Allison Wilhelm, Catherine Boussard-Pledel, Pierre Lucas, Mark R. Riley, Bruno Bureau, Jacques Lucas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations


A new family of Tellurium based glasses from the Ge-Te-I ternary system has been investigated for use in bio-sensing applications. A systematic series of compositions have been synthesized in order to explore the ternary phase diagram in an attempt to optimize the glass composition for the fiber drawing process. The characteristic temperatures Tg, the glass transition temperature, and Tx, the onset crystallization temperature, were measured in order to obtain ΔT, the difference between Tg and T x, which must be maximized for optimum fiber drawing ability, The resulting glass transition temperature range lies between 139°C and 174°C, with ΔT values between 64°C and 124°C. The mechanical properties of a selected number of glass compositions were also investigated, including hardness and Young's Modulus. The Ge-Te-I glasses have an effective transmission window between 2-27 microns, encompassing the region of interest for the identification of biologically relevant species such as carbon dioxide. Furthermore, the fibering potential of the Ge-Te-I glasses makes them an interesting candidate for use in fiber evanescent wave spectroscopy (FEWS) and other bio-sensing applications.

Original languageEnglish (US)
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications VII
StatePublished - 2007
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications VII - San Jose, CA, United States
Duration: Jan 20 2007Jan 21 2007

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


OtherOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications VII
Country/TerritoryUnited States
CitySan Jose, CA


  • Chalcogenide glass
  • Glass formation
  • IR spectroscopy
  • Optical properties
  • Tellurium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging


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