2015
DOI: 10.1016/j.sna.2015.10.001
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Sensing of carbon monoxide with porous Al2O3 intercalated with Fe3O4 nanoparticles-doped liquid crystal

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Cited by 17 publications
(5 citation statements)
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“…For example, in the case of nematic LCs, due to changes in the transmitted light intensity through the LC medium, gas detection can be realized through polariscopy [ 100,101 ] or POM. [ 116–121 ] For chiral LCs [ 146,147,153 ] or LCs doped with magnetite nanoparticles, [ 156–158 ] LC‐VOCs or gas interaction can be detected by spectroscopy techniques due to changes in the absorption, transmission and/or reflection spectra of the sensing materials. As mentioned in Section 3.5., in chiral systems the shift of the selective reflection band occurs within the visible spectrum allowing for a quick and direct detection with the naked eye.…”
Section: Transduction Methods In Liquid Crystal‐based Sensorsmentioning
confidence: 99%
See 1 more Smart Citation
“…For example, in the case of nematic LCs, due to changes in the transmitted light intensity through the LC medium, gas detection can be realized through polariscopy [ 100,101 ] or POM. [ 116–121 ] For chiral LCs [ 146,147,153 ] or LCs doped with magnetite nanoparticles, [ 156–158 ] LC‐VOCs or gas interaction can be detected by spectroscopy techniques due to changes in the absorption, transmission and/or reflection spectra of the sensing materials. As mentioned in Section 3.5., in chiral systems the shift of the selective reflection band occurs within the visible spectrum allowing for a quick and direct detection with the naked eye.…”
Section: Transduction Methods In Liquid Crystal‐based Sensorsmentioning
confidence: 99%
“…Similar to the principle discussed in Section 3.3., dopant materials can also be used to induce or enhance sensitivity and/or selectivity toward a specific gas molecule. Aksimentyeva et al, [ 156 ] Sushynskyi et al, [ 157 ] and Vistak et al [ 158 ] used chiral LCs doped with magnetite nanoparticles. Magnetite exhibits a high affinity for carbon monoxide, due to the presence of iron atoms in the oxidation states +2 and +3, similar to the case of a hemoglobin molecule, hence acting as a sensing element.…”
Section: Functional Liquid Crystal Materialsmentioning
confidence: 99%
“…Other types of sensors. In addition to the traditional CO sensors developed for mining applications such as the chemiresistive and electrochemical types, other less developed CO sensors include QCM, 225 FET, 226 SAW, 227 and optical (e.g., SPR, 228 reectometry, 229 and uorescence, 230 ) sensors. In particular, FET-based CO sensors are promising for eld applications.…”
Section: Carbon Monoxide Sensorsmentioning
confidence: 99%
“…Zharkova and Strel'tsov studied the formation of polarization holographic gratings in the LC composite doped with Al 2 O 3 nanoparticles and reported the effect of the particles on the phase transition temperature of liquid crystals of polarization holographic grating . In some studies, Al 2 O 3 porous structures were used to form a nanocomposite on the basis of a cholesteric liquid crystal (CLC) with Fe 3 O 4 nanoparticles to study the influence of CO sensing properties …”
Section: Introductionmentioning
confidence: 99%