Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes
A compact and robust tapered optical fiber microsensor is presented for detection of pH in a range from 5.8 to 7.5 in sub-microliter volumes. The sensor is based on a pH transducer 8- hydroxypyrene-1,3,6-trisulfonic acid trisodium salt immobilized in a xerogel matrix onto the tip of a optical fiber...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
IFSA Publishing, S.L.
2014-05-01
|
Series: | Sensors & Transducers |
Subjects: | |
Online Access: | http://www.sensorsportal.com/HTML/DIGEST/may_2014/Special_issue/P_SI_521.pdf |
id |
doaj-61df49e39d0f4496afae6080f36b2a2a |
---|---|
record_format |
Article |
spelling |
doaj-61df49e39d0f4496afae6080f36b2a2a2020-11-24T21:44:58ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792014-05-0127Special Issue312318Tapered Optical Fiber Sensor for Detection of pH in Microscopic VolumesOndřej PODRAZKÝ0Vlastimil MATĚJEC1Jan MRÁZEK2Tomáš MARTAN3an AUBRECHT4 Ivan KAŠÍK5Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech RepublicInstitute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech RepublicInstitute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech RepublicInstitute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech RepublicInstitute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech RepublicInstitute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i., Chaberska 57, 182 51 Prague 8, Czech Republic A compact and robust tapered optical fiber microsensor is presented for detection of pH in a range from 5.8 to 7.5 in sub-microliter volumes. The sensor is based on a pH transducer 8- hydroxypyrene-1,3,6-trisulfonic acid trisodium salt immobilized in a xerogel matrix onto the tip of a optical fiber taper with a tip diameter below 20 mm. The sol-gel method and two silicon alkoxides is used for preparing the matrix. A ratio of the fluorescence emission intensities measured at 518 nm after the excitation at 400 and 450 nm is used for evaluating the sensor response to pH. This ratiometric approach enables to reduce effects of ambient light, bleaching of the sensitive layer and geometry of the probe to the fluorescence signal and achieve the resolution of about 0.07 pH units. http://www.sensorsportal.com/HTML/DIGEST/may_2014/Special_issue/P_SI_521.pdfOptical sensorPhMicrofiber tipFluorescenceHPTSRatiometrc method. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ondřej PODRAZKÝ Vlastimil MATĚJEC Jan MRÁZEK Tomáš MARTAN an AUBRECHT Ivan KAŠÍK |
spellingShingle |
Ondřej PODRAZKÝ Vlastimil MATĚJEC Jan MRÁZEK Tomáš MARTAN an AUBRECHT Ivan KAŠÍK Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes Sensors & Transducers Optical sensor Ph Microfiber tip Fluorescence HPTS Ratiometrc method. |
author_facet |
Ondřej PODRAZKÝ Vlastimil MATĚJEC Jan MRÁZEK Tomáš MARTAN an AUBRECHT Ivan KAŠÍK |
author_sort |
Ondřej PODRAZKÝ |
title |
Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes |
title_short |
Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes |
title_full |
Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes |
title_fullStr |
Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes |
title_full_unstemmed |
Tapered Optical Fiber Sensor for Detection of pH in Microscopic Volumes |
title_sort |
tapered optical fiber sensor for detection of ph in microscopic volumes |
publisher |
IFSA Publishing, S.L. |
series |
Sensors & Transducers |
issn |
2306-8515 1726-5479 |
publishDate |
2014-05-01 |
description |
A compact and robust tapered optical fiber microsensor is presented for detection of pH in a range from 5.8 to 7.5 in sub-microliter volumes. The sensor is based on a pH transducer 8- hydroxypyrene-1,3,6-trisulfonic acid trisodium salt immobilized in a xerogel matrix onto the tip of a optical fiber taper with a tip diameter below 20 mm. The sol-gel method and two silicon alkoxides is used for preparing the matrix. A ratio of the fluorescence emission intensities measured at 518 nm after the excitation at 400 and 450 nm is used for evaluating the sensor response to pH. This ratiometric approach enables to reduce effects of ambient light, bleaching of the sensitive layer and geometry of the probe to the fluorescence signal and achieve the resolution of about 0.07 pH units.
|
topic |
Optical sensor Ph Microfiber tip Fluorescence HPTS Ratiometrc method. |
url |
http://www.sensorsportal.com/HTML/DIGEST/may_2014/Special_issue/P_SI_521.pdf |
work_keys_str_mv |
AT ondrejpodrazky taperedopticalfibersensorfordetectionofphinmicroscopicvolumes AT vlastimilmatejec taperedopticalfibersensorfordetectionofphinmicroscopicvolumes AT janmrazek taperedopticalfibersensorfordetectionofphinmicroscopicvolumes AT tomasmartan taperedopticalfibersensorfordetectionofphinmicroscopicvolumes AT anaubrecht taperedopticalfibersensorfordetectionofphinmicroscopicvolumes AT ivankasik taperedopticalfibersensorfordetectionofphinmicroscopicvolumes |
_version_ |
1725907414023143424 |