Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Meenhaz Ansari"'
Autor:
Arshad, Mohd., Meenhaz Ansari, Mohd., Ahmed, Arham S., Tripathi, Pushpendra, Ashraf, S.S.Z., Naqvi, A.H., Azam, Ameer
Publikováno v:
In Journal of Luminescence May 2015 161:275-280
Publikováno v:
Journal of Applied Physics. 132:024303
We present a theoretical investigation on the generation of Cerenkov emission of terahertz acoustic phonons in bilayer graphene (BLG) in the presence of a driving dc electric field. We have numerically and analytically studied the Cerenkov phonon emi
Publikováno v:
DAE SOLID STATE PHYSICS SYMPOSIUM 2019.
Phonon generation/amplification in nanostructures is of primary importance for engineering device applications such as Phonon laser, phonon spectrometer, ultrafast optical modulators and other device based on acousto-electro/magneto/thermo effects. I
Autor:
Meenhaz Ansari
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 131:114722
In this report, we have both numerically and analytically calculated the phonon drag thermopower, S p z and, energy loss rate, F p z due to piezoelectric surface acoustic phonons present in the underlying piezoelectric substrate at a distance, d apar
Publikováno v:
DAE SOLID STATE PHYSICS SYMPOSIUM 2018.
Publikováno v:
Journal of Applied Physics. 129:014308
The acoustic, optic, and surface polar optic phonons are the three important intrinsic and extrinsic phononic modes that increasingly populate graphene on a substrate with rising temperatures; the coupling of which with photoexcited hot carriers in t
Publikováno v:
AIP Conference Proceedings.
We report the synthesis of Copper nanoparticles (Cu nanoparticles) by the chemical reduction method. To investigate the structural properties, XRD pattern of the sample were recorded and calculations were made for crystal parameters. TEM images shows
Publikováno v:
AIP Conference Proceedings.
Autor:
Mohd Meenhaz Ansari, Ssz Ashraf
Publikováno v:
AIP Conference Proceedings.
We have studied the effect of piezoelectric scattering as a function of electron temperature and distance between the sample and the substrate on electron-acoustic phonon scattering rate in Bilayer Graphene sitting on a piezoelectric substrate. We ob
Publikováno v:
AIP Conference Proceedings.