@article { ISI:000284238000010,
	title = {Fabrication of homogeneous nanoparticle/nanoneedle BaTiO3 and Ba0.8Sr0.2TiO3 smooth thin films by simple dip coating},
	journal = {International Journal of Nanotechnology},
	volume = {7},
	number = {9-12, SI},
	year = {2010},
	month = {DEC},
	pages = {919-931},
	publisher = {INDERSCIENCE ENTERPRISES LTD},
	address = {WORLD TRADE CENTER BLDG, 29 ROUTE DE PRE-BOIS, CASE POSTALE 896, CH-1215 GENEVA, SWITZERLAND},
	abstract = {<p>Ferroelectric BaTiO3 (BTO) and Ba0.8Sr0.2TiO3 (BSTO) thin film materials have been successfully prepared by sol-gel processing and simple dip coating on glass and silicon supports. Above thin films were characterised by x-ray diffraction (XRD), Raman spectroscopy, photoelectron spectroscopy, thermal analysis, atomic force microscopy (AFM) and spectroscopic ellipsometry. Phase identification of BaTiO3 and Ba0.8Sr0.2TiO3 was performed by XRD. XRD and Raman spectroscopy investigations demonstrate that thc Ba0.8Sr0.2TiO3 film exhibits tetragonal structure. AFM analysis demonstrates the elongated nanospherical particles on glass substrate and nanowires on silicon substrate, which represent a strong influence of the crystallinity of underlying substrate on the grain morphology in this technique. The thin films on both the substrates are uniformly coated without any pinhole to significant area (similar to 2.5 cm(2)), and this method might be extended to large area uniform coating. Spectroscopic ellipsometric measurements reveal the exact thickness, refractive index and extinction coefficient of the thin films.</p>},
	keywords = {barium strontium titanate, barium titanate, dip coating, fabrication, ferroelectric material, large area coating, nanotechnology, thin film},
	issn = {1475-7435},
	author = {Saini, Mamta and Vivekanand, K. and Poddar, Pankaj and Murty, K. V. G. K. and Thushara, K. S. and Gopinath, Chinnakonda S.}
}
@article {49658,
	title = {Polymeric PEI/PEG coated optical fiber fabry-perot interferometer for CO2 detection},
	journal = {IEEE Sensors Journal},
	volume = {24},
	year = {2024},
	month = {DEC },
	pages = {40883-40889},
	type = {Article},
	abstract = {<p>
	Monitoring carbon dioxide (CO2) gas is essential for numerous applications, but the detection of CO2 in miniaturized devices presents significant challenges. In this study, a polyethyleneimine/poly(ethylene glycol) (PEI/PEG) coated optical fiber Fabry-Perot interferometer (FPI) and its charge transfer process toward CO2 are investigated. Scanning electron microscopy and Fourier transform infrared spectroscopy were used to analyze the surface morphology and vibration bands of the PEI/PEG composite. The PEI/PEG composite Fabry-Perot (FP) cavity of length similar to 13 mu m is coated at the distal end of the single-mode fiber using a dip coating technique. A highly sensitive optical and low-cost FPI probe fabrication has displayed a linear sensitivity of 17.10 nm/\% in the range of 0.31\%-1.25\% CO2 gas. The response and recovery times of the sensor are in a few tens of seconds. The enhanced performance of the sensor is primarily due to the protonation and charge transfer between CO2 gas molecules and PEI/PEG composite. Due to low-cost fabrication and high sensitivity, this FPI sensor can be used in a range of potential applications in bioprocessing, healthcare, and environmental monitoring.</p>
},
	keywords = {dip coating, Fresnel{\textquoteright}s reflection, Interference, monitoring, Optical fiber sensors, Optical fibers, polymer composite, Polymers, refractive index, sensitivity, Sensor phenomena and characterization, sensors, swelling, Temperature sensors},
	issn = {1530-437X},
	doi = {10.1109/JSEN.2024.3478088},
	author = {Pawar, Dnyandeo and Lo Presti, Daniela and Lemma, Enrico D. and Rainer, Alberto and Kumar, Ajay and Kanawade, Rajesh and Silvestri, Sergio and Schena, Emiliano and Massaroni, Carlo}
}
