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• W3202643618 endingPage "130818" @default.
• W3202643618 startingPage "130818" @default.
• W3202643618 abstract "Solvent-free synthesis of nanocomposite for flexible humidity sensor is gaining immense interest to fulfill the criteria for its practical application. Herein, present paper reports the development of cadmium sulfide/polyacrylamide nanocomposite as a flexible humidity sensor, which was fabricated by the facile spin-coating technique on PET (polyethylene terephthalate) substrate. Morphological, optical and crystalline nature of CdS/polyacrylamide nanocomposite were investigated using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), differential scanning calorimetric (DSC), Fourier transmission infrared spectroscopy (FTIR), UV–Visible, and Particle size analysis. Characteristic surface area and pore volume were estimated using BET analysis whereas the hydrophilicity of the sample was investigated using contact angle measurement. As fabricated sensor showed an outstanding humidity sensing response with good linearity in the humidity ranging from 11% to 95%RH. The sensitivity of nanocomposite at high humidity range (50–95%RH) was calculated as 306.47 nF/%RH and is utilized for moisture detection of commonly used baby diapers with alarm. The simulated & optimized computer model of the synthesized composite (Cd-S & Polyacrylamide) using density functional theory and performed several analyses. HOMO-LUMO and correspondingly obtained other electronic parameters were evaluated, which revealed that band gap of the synthesized composite material tends to decrease upon increasing the level of water molecules owing to be better humidity sensing mechanism, and therefore, can be used as humidity sensor. • CdS-polyacrylamide nanocomposite based humidity sensing with baby diaper alarm were reported. • The highest sensitivity exhibited by humidity sensor at high humid range (50–95%RH) was calculated as 306.47 nF/%RH at 20 Hz. • Sensor exhibited rapid response and recovery time of 42 ms and 21 ms, respectively. • Alarm based humidity sensing was also investigated for detecting wetness inside baby diapers. • Nanocomposite based photodetector device demonstrated a responsivity of 43.939 mA/W for optical light intensity of 40 μW/cm 2 ." @default.
• W3202643618 created "2021-10-11" @default.
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• W3202643618 date "2022-01-01" @default.
• W3202643618 modified "2023-10-16" @default.
• W3202643618 title "Design and development of flexible humidity sensor for baby diaper alarm: Experimental and theoretical study" @default.
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• W3202643618 doi "https://doi.org/10.1016/j.snb.2021.130818" @default.
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