Zobrazeno 1 - 10
of 281
pro vyhledávání: '"S. S. Prabhu"'
Publikováno v:
AIP Advances, Vol 10, Iss 10, Pp 105220-105220-7 (2020)
We present detailed studies on M-type barium ferrite (BaFe12O19, BaM) synthesized by the sol–gel combustion method that is calcined at 1000 °C, 1100 °C, and 1200 °C. In addition to the structural properties, we present the THz optical dielectric
Externí odkaz:
https://doaj.org/article/b88a4b0d5c904353a6bfa42b9ec20db0
Autor:
Arnab Pattanayak, Sandipta Roy, Goutam Rana, Siddhartha P. Duttagupta, Venu Gopal Achanta, S. S. Prabhu
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract In this article we present a three-dimensional loop Yagi-Uda array for efficient, polarization independent and directional absorption of THz radiation over a narrow frequency range (f0 = 0.657 THz & Q factor = 7.5). Unit cell of the array co
Externí odkaz:
https://doaj.org/article/88a747e98b504db682014de4256e686e
Publikováno v:
AIP Advances, Vol 8, Iss 12, Pp 125122-125122-7 (2018)
A high sensitivity, low power (∼1μW to 10 μW), room temperature, antenna coupled, THz (0.8 THz) detector is presented by means field effect transistor (FETs) fabricated on epitaxial-grown graphene on silicon carbide. The contact resistance across
Externí odkaz:
https://doaj.org/article/31aad30aca2040d3b6153094aaf04662
Autor:
Abhishek Gupta, Goutam Rana, Arkabrata Bhattacharya, Abhishek Singh, Ravikumar Jain, Rudheer D. Bapat, S. P. Duttagupta, S. S. Prabhu
Publikováno v:
APL Photonics, Vol 3, Iss 5, Pp 051706-051706-6 (2018)
Photoconductive antennas (PCAs) are among the most conventional devices used for emission as well as detection of terahertz (THz) radiation. However, due to their low optical-to-THz conversion efficiencies, applications of these devices in out-of-l
Externí odkaz:
https://doaj.org/article/f725a58e4e794ad58e4408df8ca10e25
Publikováno v:
AIP Advances, Vol 3, Iss 12, Pp 122106-122106-5 (2013)
We study the effect of a surface modification at the interface between metallic electrodes and semiconducting substrate in Semi-Insulating GaAs (SI-GaAs) based photoconductive emitters (PCE) on the emission of Tera-Hertz (THz) radiation. We partially
Externí odkaz:
https://doaj.org/article/432a41eb5be0484ab01a1a267dfd0543
Autor:
Narayanan, Maneesha, Punjal, Ajinkya, Hossain, Emroj, Choudhary, Shraddha, Kulkarni, Ruta, Thamizhavel, S S Prabhu Arumugam, Bhattacharya, Arnab
We report the growth of electrically-resistive vanadium-doped beta-Ga2O3 single crystals via the optical floating zone technique. By carefully controlling the growth parameters V-doped crystals with very high electrical resistivity compared to the us
Externí odkaz:
http://arxiv.org/abs/2203.04941
We consider the problem of finding the Discrete Fourier Transform (DFT) of $N-$ length signals with known frequency support of size $k$. When $N$ is a power of 2 and the frequency support is a spectral set, we provide an $O(k \log k)$ algorithm to co
Externí odkaz:
http://arxiv.org/abs/2102.12514
Autor:
Gautam Sinha, S. S. Prabhu
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 10, p 102401 (2011)
We are commissioning a 2.5 GeV synchrotron radiation source (SRS) where electrons travel in high vacuum inside the vacuum chambers made of aluminum alloys. These chambers are kept between the pole gaps of magnets and are made to facilitate the radiat
Externí odkaz:
https://doaj.org/article/434b6207572145ad93a7e88eb8ef02a3
Autor:
Gautam Sinha, S. S. Prabhu
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 6, p 062401 (2011)
A model is developed to study the eddy current induced in a thin conducting but nonmagnetic plate of finite size when exposed to a time varying magnetic field. The applied field may be uniform or vary in space. This model can accurately estimate the
Externí odkaz:
https://doaj.org/article/d21989eba8614bbcb99e0b3f8e7adfb2
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).