Porphyrin-nanoassembled fiber-optic gas sensor fabrication: Optimization of parameters for sensitive ammonia gas detection

Sergiy Korposh, Suguru Kodaira, Roman Selyanchyn, Francisco H. Ledezma, Stephen W. James, Seung Woo Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Highly sensitive fiber-optic ammonia gas sensors were fabricated via layer-by-layer deposition of poly(diallyldimethylammonium chloride) (PDDA) and tetrakis(4-sulfophenyl)porphine (TSPP) onto the surface of the core of a hard-clad multimode fiber that was stripped of its polymer cladding. The effects of film thickness, length of sensing area, and depth of evanescent wave penetration were investigated to clearly understand the sensor performance. The sensitivity of the fiber-optic sensor to ammonia was linear in the concentration range of 0.5–50 ppm and the response and recovery times were less than 3 min, with a limit of detection of 0.5 ppm, when a ten-cycle PDDA/TSPP film was assembled on the surface of the core along a 1 cm-long stripped section of the fiber. The sensor's response towards ammonia was also checked under different relative humidity conditions and a simple statistical data treatment approach, principal component analysis, demonstrated the feasibility of ammonia sensing in environmental relative humidity ranging from dry 7% to highly saturated 80%. Penetration depths of the evanescent wave for the optimal sensor configuration were estimated to be 30 and 33 nm at wavelengths of 420 and 706 nm, which are in a good agreement with the thickness of the 10-cycle deposited film (ca. 30 nm).

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalOptics and Laser Technology
Volume101
DOIs
Publication statusPublished - May 1 2018
Externally publishedYes

Fingerprint

Porphyrins
Fiber optic sensors
Chemical sensors
Ammonia
porphyrins
ammonia
fiber optics
Gases
Fabrication
fabrication
optimization
sensors
gases
evanescent waves
Atmospheric humidity
Sensors
humidity
penetration
Multimode fibers
cycles

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Porphyrin-nanoassembled fiber-optic gas sensor fabrication : Optimization of parameters for sensitive ammonia gas detection. / Korposh, Sergiy; Kodaira, Suguru; Selyanchyn, Roman; Ledezma, Francisco H.; James, Stephen W.; Lee, Seung Woo.

In: Optics and Laser Technology, Vol. 101, 01.05.2018, p. 1-10.

Research output: Contribution to journalArticle

Korposh, Sergiy ; Kodaira, Suguru ; Selyanchyn, Roman ; Ledezma, Francisco H. ; James, Stephen W. ; Lee, Seung Woo. / Porphyrin-nanoassembled fiber-optic gas sensor fabrication : Optimization of parameters for sensitive ammonia gas detection. In: Optics and Laser Technology. 2018 ; Vol. 101. pp. 1-10.
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