Noncrosslinked organosilicon matrix for luminescence-quenching-based fiber optic oxygen sensors

Ganapati R. Mauze; Robert R. Holloway

doi:10.1117/12.144826

21 May 1993 Noncrosslinked organosilicon matrix for luminescence-quenching-based fiber optic oxygen sensors

Ganapati R. Mauze, Robert R. Holloway

Proceedings Volume 1886, Fiber Optic Sensors in Medical Diagnostics; (1993) https://doi.org/10.1117/12.144826
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We have developed a silica-filled, noncrosslinked, organosilicon matrix for trapping a luminescent dye. The matrix is used for fiber optic oxygen sensing based on the luminescence quenching phenomenon. The rheological properties of the matrix material are such that it simplifies fabrication of the extremely small sensors required for intra-arterial applications. The dye seems to be distributed between sites in the continuous organosilicon phase and the dispersed silica phase. The relative populations in the two phases can be adjusted by certain additives which generate compounds that elute silica, such as acetic acid. The quenching constant of the system depends not only on the presence or absence of such eluants, but on the chemical nature of the additive as well. We were able to tailor the composition of matrix so as to optimize the sensitivity over the physiological range of oxygen concentration. Our observations on the composition dependence of the oxygen sensitivity of the matrix are presented.

Citation Download Citation

Ganapati R. Mauze and Robert R. Holloway "Noncrosslinked organosilicon matrix for luminescence-quenching-based fiber optic oxygen sensors", Proc. SPIE 1886, Fiber Optic Sensors in Medical Diagnostics, (21 May 1993); https://doi.org/10.1117/12.144826

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available