Plastic Optical Fiber with Sol-gel Film for pH Detection. (2017)

• Record Type: Journal Article
• Authors: Razo-Medina, D.; Alvarado-Méndez, E.; Trejo-Durán, M.
• Is Part Of: Procedia technology. Volume 27(2016)
• Page Start: 271
• Page End: 273
• Publication Date: 2017
• Subjects: Sol-gel method -- plastic optical fiber -- detection -- pH -- optrode -- transmittance; Technology -- Congresses; Technology -- Periodicals; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Technology; Conference proceedings; Periodicals; 605
• DOI: 10.1016/j.protcy.2017.04.115
• Languages: English
• ISSNs: 2212-0173

Abstract

Abstract: In this work, the development of plastic optical fiber with sol-gel for pH detection is shown. Sol-gel technique is used by immobilizing phenolphthalein, litmus on surface of an optical plastic fiber. The light of a LED (632 nm wavelength) is transmitted through the optrode. The variations of intensity of the light output are detected by a photoresistor, this intensity changes according to pH of the sample. The percent transmittance versus unit of pH is presented in characteristic curve.