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Liquefied petroleum gas (LPG) sensor was fabricated by solution based-spin casting of thin films of polyaniline-niobium pentoxide (PANI-Nb2O5) composite onto glass substrate at room temperature. The PANI-Nb2O5 composite was synthesized by relatively simple method of in-situ chemical polymerization at room temperature and was structurally characterized by X-ray diffraction (XRD), scanning electron...