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Publication Metadata only Nanothin polyaniline film for highly sensitive chemiresistive gas sensing(2013-06-01) Sira Srinives; Tapan Sarkar; Ashok Mulchandani; University of California, Riverside; Mahidol UniversityThis study developed a facile technique for site-specific synthesis of nanometer-thick polyaniline (PANI) film for fabrication of field-effect transistor/chemiresistor sensors. The nanothin film had a thickness of 9-20nm and was of carpet-likePublication Metadata only Calixarene-functionalized single-walled carbon nanotubes for sensitive detection of volatile amines(2018-09-01) Tapan Sarkar; P. Muhamed Ashraf; Sira Srinives; Ashok Mulchandani; University of California, Riverside; Mahidol University; Guru Gobind Singh Indraprastha Universityand ∼0.4 ppm for NH3, TMA and DMA respectively. Further, the field effect transistor analyses indicated that the sensing mechanism of the SWCNT-calixarene hybrid is dominated by the electrostatic gating effect. The sensing capability of the hybrid at lowPublication Metadata only Single-walled Carbon Nanotube-Calixarene Based Chemiresistor for Volatile Organic Compounds(2018-09-01) Tapan Sarkar; Sira Srinives; Armando Rodriquez; Ashok Mulchandani; University of California, Riverside; Mahidol University; Guru Gobind Singh Indraprastha UniversityAdministration (OSHA) permissible exposure limit (PEL) except for benzene. A mechanistic study for BTEX was performed via field-effect transistor measurements, and this suggested that the sensing mechanism is dominated by an electrostatic gating effect. In our... beneficial effects: (a) The use of SWCNT eliminates the conductivity issue, and this enables low-power chemiresistive sensing; (b) the excellent affinity of calixarenes for certain analytes improves sensitivity. The hybrid material was fabricated by solvent