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Your search keyword '"Gupta, S. K."' showing total 3 results
Start Over Author "Gupta, S. K." Topic heterostructures Topic nanowires
3 results on '"Gupta, S. K."'

1. Chemical Synthesis and Characterization of PdTe-Ag2Te Nanowires Heterostructure.

Author

Bhatt, Ranu, Krishnan, Gopika, Bhattacharya, Shovit, Bohra, Anil, Bhatt, Pramod, Basu, Ranita, Singh, Ajay, Aswal, D. K., and Gupta, S. K.

Subjects
PALLADIUM compounds, SILVER nanoparticles, NANOSTRUCTURED materials synthesis, SYNTHESIS of nanowires, HETEROSTRUCTURES, DOPING agents (Chemistry)
Abstract

Ag2Te and Pd doped Ag2Te nanowires are synthesized using chemical route. Field Emission Scanning Electron Microscopy (FESEM) shows the presence of nanowires of nearly few micron length and ~ 200 nm diameter. The composition analysis performed using Electron Dispersive Spectroscopy (EDS) shows the presence of almost 1.98 at% palladium. Reitveld refinement of X-ray diffraction (XRD) shows the presence of 0.3% of PdTe phase in addition to Ag2Te in Pd doped Ag2Te sample. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Hierarchical Nano Heterostructures of SnO2-WOX: Growth and Sensing Studies.

Author

Kanitkar, Prajakta, Sen, Shashwati, Muthe, K. P., Aiyer, R. C., and Gupta, S. K.

Subjects
HETEROSTRUCTURES, TRANSMISSION electron microscopy, NANOWIRES, CHLORINE, ULTRAVIOLET radiation, DETECTORS
Abstract

SnO2-WOX nanowire heterostructure were grown by physical deposition method. Characterization by XRD, UV-Vis and TEM shows that both the nanowire systems do not interact with each other, and retain their individual characteristic. Sensors fabricated from both, mat films and single isolated nanowire shows response to chlorine as well as H2S gas at room temperature. Single nanowire sensors are found to be better sensitive as well as selective Cl2 sensor. [ABSTRACT FROM AUTHOR]

Published
2010
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3. Growth And Gas Sensing Properties Of Dielectrophoretically Isolated CuO-W18O49 Heterostructures.

Author

Jain, Chhavi, Mukund, Vignesh, Kaur, Manmeet, Ganapathi, Kailasa, Ramgir, Niranjan S., Datta, Niyanta, Aswal, D. K., and Gupta, S. K.

Subjects
HETEROSTRUCTURES, CRYSTAL growth, GAS detectors, NANOWIRES, DIELECTROPHORESIS, COPPER oxide, TUNGSTEN oxides, METAL oxide semiconductors
Abstract

Hierarchical heterostructures consisting of W18O49 nanowires grown on CuO nanowires have been prepared and studied for their gas sensing properties. SEM images show that W18O49 initially grow as an shell over core CuO nanowire with protusion like branches whose thickness depends on oxygen partial pressure. These CuO:W18O49 structures were dielectrophoretically isolated and studied for their gas sensing properties. The results show potential of use of tailored hierarchical heterostructures for the fabrication of gas sensors. [ABSTRACT FROM AUTHOR]

Published
2010
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