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pro vyhledávání: '"Kumar, P. Praveen"'
Dielectric relaxation of materials provides important information on the polarisation dynamics at different time scales. We study the dielectric relaxation of a nematic liquid crystal under steady rotational shear and simultaneously measure the visco
Externí odkaz:
http://arxiv.org/abs/2402.11906
Autor:
Kumar, P Praveen1,2 (AUTHOR), Balakrishnan, S1 (AUTHOR), Magesh, A3 (AUTHOR) mageshmaths86@gmail.com
Publikováno v:
Pramana: Journal of Physics. Sep2024, Vol. 98 Issue 3, p1-10. 10p.
The electroviscous effect deals with the change in the viscosity of fluids due to an external electric field. Here, we report experimental studies on the electroviscous effects in a ferroelectric nematic liquid crystal. It was synthesised accomplishi
Externí odkaz:
http://arxiv.org/abs/2209.11154
Publikováno v:
Computational and Mathematical Biophysics, Vol 12, Iss 1, Pp 34-248 (2024)
In this article, we present a susceptible, exposed, infected, hospitalized and recovered compartmental model for COVID-19 with vaccination strategies and mask efficiency. Initially, we established the positivity and boundedness of the solutions to en
Externí odkaz:
https://doaj.org/article/29c13220456243bc8accb4ff79f316e3
We study the flow behaviour of a twist-bend nematic $(N_{TB})$ liquid crystal. It shows three distinct shear stress ($\sigma$) responses in a certain range of temperatures and shear rates ($\dot{\gamma}$). In Region-I, $\sigma\sim\sqrt{\dot{\gamma}}$
Externí odkaz:
http://arxiv.org/abs/2107.14448
Since the epidemic began in November 2019, no viable medicine against SARS-CoV-2 has been discovered. The typical medication discovery strategy requires several years of rigorous research and development as well as a significant financial commitment,
Externí odkaz:
http://arxiv.org/abs/2106.05440
Autor:
Swarubini P. J., Kumar P. Sriram, Kumar Govarthan Praveen, Purkayastha Meghraj, Deb Parbani, Sairam Shivabhijit, Asaithambi Mythili, Agastinose Ronickom Jac Fredo
Publikováno v:
Current Directions in Biomedical Engineering, Vol 9, Iss 1, Pp 694-697 (2023)
Emotions are mental states that result from neurophysiological changes associated with thoughts, feelings, and behavioral responses. Emotions lead to modifications in heart rate variability, which can be identified through electrocardiogram (ECG) sig
Externí odkaz:
https://doaj.org/article/9708c9a527824731837fce3ae1f3d3cc
Since the first \emph{in-situ} measurements of the altitude profile of upper atmospheric density and composition carried out by the Viking lander missions during 1976, similar data were continuously gathered by MAVEN and MOM spacecraft orbiting Mars
Externí odkaz:
http://arxiv.org/abs/2103.01930
Publikováno v:
Phys. Rev. Materials 4, 115601 (2020)
In twist-bend nematic (N\textsubscript{TB}) liquid crystals (LCs), the mean molecular orientation exhibits heliconical structure with nanoscale periodicity. On the mesoscopic scale, N\textsubscript{TB} resembles layered systems (like smectics), where
Externí odkaz:
http://arxiv.org/abs/2008.10228
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