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Your search keyword '"Girish, P."' showing total 3 results
Start Over Author "Girish, P." Publisher american institute of physics
3 results on '"Girish, P."'

1. Investigation on Temperature Dependent Inductance (TDI) of a planar Multi-Layer Inductor (MLI) down to 4.2 K.

Author

Sagar, Pankaj, Hassan, Harris K., Lakshmi, E. D. A., Akber, Kashif, Girish, P. S., Gour, Abhay Singh, and Karunanithi, R.

Subjects
ELECTRIC inductance, PERMITTIVITY, TEMPERATURE, DEBYE temperatures, ELECTRIC capacity
Abstract

This paper presents an investigation of the temperature dependence characteristics specific to cryogenic planar Multi-Layer Inductors (MLIs). This paper establishes that the inductance of a planar MLI at a specific frequency varies with temperature when the sensor is cooled down to 4.2 K while providing a detailed analysis of various possible factors that might contribute to the variation in the sensor performance, such as the thermal deformation and the variation in the properties of sensor materials, using a combination of experiments and simulations. By calculating the interlayer capacitance, we have attempted to adopt a novel approach in the investigation of the effects of thermal deformation on the sensor. In order to arrive at that, the relative permittivity of the base material (G10CR-FR4) at cryogenic temperatures was obtained through experiments. The ANSYS static structural package was used for modeling thermally induced deformations, after which the deformed capacitance and inductance were obtained using Ansoft MAXWELL. From the analysis, we have concluded that the variation in the inductance of the sensor has a direct correlation with the electrical resistivity (hence the residual resistivity ratio) of the coil material. The number of inductor layers and the area of the component layer will also determine the temperature dependence phenomenon. These conclusions are not obvious from the established inductance models. [ABSTRACT FROM AUTHOR]

Published
2020
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2. TiO2 Nanotubes Decorated by Silver Nanocubes: Extraction of High Field Emission Current Density.

Author

Patil, Girish P., Bagal, Vivekanand S., Deore, Amol B., More, M. A., and Chavan, Padmakar G.

Subjects
*SILVER nanoparticles, *TITANIUM oxides, *NANOTUBES, *CURRENT density (Electromagnetism), *DIODES
Abstract

Silver (Ag) nanocubes with average size of 69 nm were decorated on TiO2 nanotubes by using UV switchable reducing agent. The field emission current density versus applied field (J-E) and emission current versus time (I-t) characteristics were measured in a planer diode configuration at the base pressure of 1 x 10-8 mbar. Turn-on field defined for the emission current density of 10 μA/cm² has been found to be 4.1 V/μm and upon the application of high applied electric field of 7.4 V/μm, maximum current density of 1.1 mA/cm² has been achieved. I-t measurement has been studied at the preset of 1 μA emission current for the duration of 3 hr. Overall nature of emission current has been seen to be stable for duration of measurement. Superior field emission behavior in terms of maximum current density and emission stability makes the present emitter more suitable for micro/nano-electronics device applications. [ABSTRACT FROM AUTHOR]

Published
2017
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3. Field electron extraction from surface modified Cd(OH)2 nanowires.

Author

Bagal, Vivekanand S., Patil, Girish P., Jadhav, Chandradip, Sharma, Malvika, Shivhare, Sugam, Chavan, Padmakar G., Singh, Biswas, and Das

Subjects
*FIELD emission electron microscopy, *NANOWIRES, *GOLD nanoparticles, *CADMIUM hydroxide, *SPUTTERING (Physics), *STRUCTURAL analysis (Science)
Abstract

The Cd(OH)2 nanowires were grown on Silicon(Si) substrate by simple chemical bath deposition technique and gold(Au) nanoparticles were decorated on surface of the Cd(OH)2 nanowiresby sputtering method. Detail characterization such as morphological and structural analysis of Au/Cd(OH)2 nanowires has been carried out using Field Emission Scanning Electron Microscope and X-ray Diffraction. Low turn-on field of 0.75 V/μm was found forthe emission current density of 10 µA/cm2 and high currentdensity of 1.478mA/cm2 was drawn at an applied field of 1.6 V/μm from Au/Cd(OH)2 nanowires, observed low turn-on field was found superior to other metal nanoparticles decorated semiconducting nanostructures reported in the literature. Also the field emission current stability for the preset value of 10 µA over the period of 3 hr is found to be good. To the best of our knowledge, this is the first report on the synthesis and field emission studies Au/Cd(OH)2 nanowires. [ABSTRACT FROM AUTHOR]

Published
2018
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