<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "An FBG magnetic sensor for oil flow monitoring in sandstone core"^^ . "Monitoring the oil movement using a non-contact optical fiber probe during enhanced oil recovery is a novel technique to increase the efficiency of the process by distinguishing the oil position in the reservoir. A partially unclad fiber Bragg grating (FBG) coated with Fe3O4 nanoparticles as a magnetic field sensor is experimentally demonstrated. A series of six FBGs reflecting different wavelengths are fixed on the surface of sandstone. Nanofluids containing magnetite nanoparticles and alkaline-surfactant-polymer are injected continuously in two separate steps into the sandstone, which is saturated with 20 oil and 80 brine. The chamber is equipped with a solenoid that acts as a magnetic field generator. The changes in the magnetic field strength depended on the FBG-solenoid distance and the density of localized injected nanoparticles near the FBGs leads to a shift of the reflected wavelength of each single FBG accordingly. The shift is caused by the interference of different propagating modes reflected from the core-cladding and cladding-magnetite layer interfaces. The intensity of the FBG spectra decreases by injecting the nanofluid and vice versa for surfactant injection. The sensor response time of �21 s confirms the high reliability and repeatability of the sensing scheme. Movement of oil along the sandstone alters the wavelength shift in the FBG spectra. © 2019 The Royal Society of Chemistry."^^ . "2019" . . "9" . "61" . . "Royal Society of Chemistry"^^ . . . "RSC Advances"^^ . . . "20462069" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "A.F."^^ . "Ismail"^^ . "A.F. Ismail"^^ . . "N."^^ . "Yahya"^^ . "N. Yahya"^^ . . "M.F."^^ . "Salebi"^^ . "M.F. Salebi"^^ . . "M.A.A."^^ . "Bakar"^^ . "M.A.A. Bakar"^^ . . "M.H.D."^^ . "Othman"^^ . "M.H.D. Othman"^^ . . "M.A."^^ . "Rahman"^^ . "M.A. Rahman"^^ . . "I.S."^^ . "Amiri"^^ . "I.S. Amiri"^^ . . "Z."^^ . "Samavati"^^ . "Z. Samavati"^^ . . "K.N."^^ . "Koo"^^ . "K.N. Koo"^^ . . "A."^^ . "Samavati"^^ . "A. Samavati"^^ . . . . . "HTML Summary of #12008 \n\nAn FBG magnetic sensor for oil flow monitoring in sandstone core\n\n" . "text/html" . .