A micro-machined optical fibre cantilever as a miniaturised pH sensor

Jun Li, Frank Albri, Robert R. J. Maier, Wenmiao Shu, Jining Sun, Duncan P. Hand, William N. MacPherson

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A micro-cantilever fabricated using a combination of picosecond-laser machining and focused ion beam milling directly onto the end of a standard telecommunications optical fiber is demonstrated as a liquid pH sensor. Conventional pH meters typically require relatively large reaction volumes up to ~50 mL, which is not always convenient. The micro-scale nature of this sensor offers the potential for pH measurement on a smaller sample volume down to micro-liter. The fiber end-tip cantilever is coated with a pH sensitive layer, and the pH-induced deflection is monitored interfermetically. A detectable pH range from 4.0 to 10.0 is demonstrated for the cantilevers coated with 16-mercapto-hexadecanoic-1-acid as the functional layer, and a detectable pH range from 4.0 to 9.0 is demonstrated for the cantilevers coated with Al2O3 as the functional layer.
LanguageEnglish
Pages7221-7228
Number of pages8
JournalIEEE Sensors Journal
Volume15
Issue number12
Early online date26 Aug 2015
DOIs
Publication statusPublished - 31 Dec 2015

Fingerprint

pH meters
pH sensors
Milling (machining)
Focused ion beams
Telecommunication
Optical fibers
Machining
optical fibers
Acids
Fibers
Lasers
sensors
Sensors
Liquids
laser machining
telecommunication
deflection
ion beams
acids
fibers

Keywords

  • optical fiber sensors
  • optical fibers
  • cavity resonators
  • temperature measurement
  • temperature sensors

Cite this

Li, J., Albri, F., Maier, R. R. J., Shu, W., Sun, J., Hand, D. P., & MacPherson, W. N. (2015). A micro-machined optical fibre cantilever as a miniaturised pH sensor. IEEE Sensors Journal, 15(12), 7221-7228. https://doi.org/10.1109/JSEN.2015.2472971
Li, Jun ; Albri, Frank ; Maier, Robert R. J. ; Shu, Wenmiao ; Sun, Jining ; Hand, Duncan P. ; MacPherson, William N. / A micro-machined optical fibre cantilever as a miniaturised pH sensor. In: IEEE Sensors Journal. 2015 ; Vol. 15, No. 12. pp. 7221-7228.
@article{e47e87e32c9545cfb24c4cc88b9cd442,
title = "A micro-machined optical fibre cantilever as a miniaturised pH sensor",
abstract = "A micro-cantilever fabricated using a combination of picosecond-laser machining and focused ion beam milling directly onto the end of a standard telecommunications optical fiber is demonstrated as a liquid pH sensor. Conventional pH meters typically require relatively large reaction volumes up to ~50 mL, which is not always convenient. The micro-scale nature of this sensor offers the potential for pH measurement on a smaller sample volume down to micro-liter. The fiber end-tip cantilever is coated with a pH sensitive layer, and the pH-induced deflection is monitored interfermetically. A detectable pH range from 4.0 to 10.0 is demonstrated for the cantilevers coated with 16-mercapto-hexadecanoic-1-acid as the functional layer, and a detectable pH range from 4.0 to 9.0 is demonstrated for the cantilevers coated with Al2O3 as the functional layer.",
keywords = "optical fiber sensors, optical fibers, cavity resonators, temperature measurement, temperature sensors",
author = "Jun Li and Frank Albri and Maier, {Robert R. J.} and Wenmiao Shu and Jining Sun and Hand, {Duncan P.} and MacPherson, {William N.}",
year = "2015",
month = "12",
day = "31",
doi = "10.1109/JSEN.2015.2472971",
language = "English",
volume = "15",
pages = "7221--7228",
journal = "IEEE Sensors Journal",
issn = "1530-437X",
number = "12",

}

Li, J, Albri, F, Maier, RRJ, Shu, W, Sun, J, Hand, DP & MacPherson, WN 2015, 'A micro-machined optical fibre cantilever as a miniaturised pH sensor' IEEE Sensors Journal, vol. 15, no. 12, pp. 7221-7228. https://doi.org/10.1109/JSEN.2015.2472971

A micro-machined optical fibre cantilever as a miniaturised pH sensor. / Li, Jun; Albri, Frank; Maier, Robert R. J.; Shu, Wenmiao; Sun, Jining; Hand, Duncan P.; MacPherson, William N.

In: IEEE Sensors Journal, Vol. 15, No. 12, 31.12.2015, p. 7221-7228.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A micro-machined optical fibre cantilever as a miniaturised pH sensor

AU - Li, Jun

AU - Albri, Frank

AU - Maier, Robert R. J.

AU - Shu, Wenmiao

AU - Sun, Jining

AU - Hand, Duncan P.

AU - MacPherson, William N.

PY - 2015/12/31

Y1 - 2015/12/31

N2 - A micro-cantilever fabricated using a combination of picosecond-laser machining and focused ion beam milling directly onto the end of a standard telecommunications optical fiber is demonstrated as a liquid pH sensor. Conventional pH meters typically require relatively large reaction volumes up to ~50 mL, which is not always convenient. The micro-scale nature of this sensor offers the potential for pH measurement on a smaller sample volume down to micro-liter. The fiber end-tip cantilever is coated with a pH sensitive layer, and the pH-induced deflection is monitored interfermetically. A detectable pH range from 4.0 to 10.0 is demonstrated for the cantilevers coated with 16-mercapto-hexadecanoic-1-acid as the functional layer, and a detectable pH range from 4.0 to 9.0 is demonstrated for the cantilevers coated with Al2O3 as the functional layer.

AB - A micro-cantilever fabricated using a combination of picosecond-laser machining and focused ion beam milling directly onto the end of a standard telecommunications optical fiber is demonstrated as a liquid pH sensor. Conventional pH meters typically require relatively large reaction volumes up to ~50 mL, which is not always convenient. The micro-scale nature of this sensor offers the potential for pH measurement on a smaller sample volume down to micro-liter. The fiber end-tip cantilever is coated with a pH sensitive layer, and the pH-induced deflection is monitored interfermetically. A detectable pH range from 4.0 to 10.0 is demonstrated for the cantilevers coated with 16-mercapto-hexadecanoic-1-acid as the functional layer, and a detectable pH range from 4.0 to 9.0 is demonstrated for the cantilevers coated with Al2O3 as the functional layer.

KW - optical fiber sensors

KW - optical fibers

KW - cavity resonators

KW - temperature measurement

KW - temperature sensors

U2 - 10.1109/JSEN.2015.2472971

DO - 10.1109/JSEN.2015.2472971

M3 - Article

VL - 15

SP - 7221

EP - 7228

JO - IEEE Sensors Journal

T2 - IEEE Sensors Journal

JF - IEEE Sensors Journal

SN - 1530-437X

IS - 12

ER -