Sasthi C. Ghosh
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View article: Biomechanical Analysis of Pediatric Dental Crowns: A Comparative Study of Zirconia, Bioflex, and PEEK Using Finite Element Analysis
Biomechanical Analysis of Pediatric Dental Crowns: A Comparative Study of Zirconia, Bioflex, and PEEK Using Finite Element Analysis Open
A BSTRACT Background: Oral health in children plays a critical role in their overall well-being, influencing physical, psychological, and social quality of life. Early childhood caries (ECC) remains a significant concern, leading to variou…
View article: Energy-efficient UAV movement and user-UAV association in multi-UAV networks
Energy-efficient UAV movement and user-UAV association in multi-UAV networks Open
These days, unmanned aerial vehicle (UAV)-based millimeter wave (mmWave) communication systems have drawn a lot of attention due to the increasing demand for faster data rates. Given the susceptibility of mmWave signals to obstacles and hi…
View article: Double reflections Assisted RIS Deployment and Energy-efficient Group Selection in mmWaves D2D Communication
Double reflections Assisted RIS Deployment and Energy-efficient Group Selection in mmWaves D2D Communication Open
Reconfigurable intelligent surfaces (RISs) offer a viable way to improve the performance of multi-hop device-to-device (D2D) communication. However, due to the substantial propagation and penetration losses of the millimeter waves (mmWaves…
View article: A Graph-based Strategic Sensor Deployment Approach for k-coverage in WSN
A Graph-based Strategic Sensor Deployment Approach for k-coverage in WSN Open
This paper studies a graph-based sensor deployment approach in wireless sensor networks (WSNs). Specifically, in today's world, where sensors are everywhere, detecting various attributes like temperature and movement, their deteriorating l…
View article: Time varying channel estimation for RIS assisted network with outdated CSI: Looking beyond coherence time
Time varying channel estimation for RIS assisted network with outdated CSI: Looking beyond coherence time Open
The channel estimation (CE) overhead for unstructured multipath-rich channels increases linearly with the number of reflective elements of reconfigurable intelligent surface (RIS). This results in a significant portion of the channel coher…
View article: GOLD NANOPARTICLE–MEDIATED PLASMONIC BLOCK COPOLYMERS: DESIGN, SYNTHESIS, AND APPLICATIONS IN SMART DRUG DELIVERY
GOLD NANOPARTICLE–MEDIATED PLASMONIC BLOCK COPOLYMERS: DESIGN, SYNTHESIS, AND APPLICATIONS IN SMART DRUG DELIVERY Open
The development of advanced drug delivery systems has become a central focus in biomedical engineering and pharmaceutical sciences, particularly with the integration of nanotechnology into polymeric platforms. In this study, we present the…
View article: Priority aware grouping-based multihop routing scheme for RIS-assisted wireless networks
Priority aware grouping-based multihop routing scheme for RIS-assisted wireless networks Open
Reconfigurable intelligent surfaces (RISs) is a novel communication technology that has been recently presented as a potential candidate for beyond fifth-generation wireless communication networks. In this paper, we propose a priority-awar…
View article: DRAMS: Double-RIS Assisted Multihop Routing Scheme for Device-to-Device Communication
DRAMS: Double-RIS Assisted Multihop Routing Scheme for Device-to-Device Communication Open
Reconfigurable intelligent surfaces (RISs) is a promising solution for enhancing the performance of multihop wireless communication networks. In this paper, we propose a double-RIS assisted multihop routing scheme for a device-to-device (D…
View article: A Dynamic Obstacle Tracking Strategy for Proactive Handoffs in Millimeter-wave Networks
A Dynamic Obstacle Tracking Strategy for Proactive Handoffs in Millimeter-wave Networks Open
Stringent line-of-sight demands necessitated by the fast attenuating nature of millimeter waves (mmWaves) through obstacles pose one of the central problems of next generation wireless networks. These mmWave links are easily disrupted due …
View article: Optimal $L(1,2)$-edge Labeling of Infinite Octagonal Grid
Optimal $L(1,2)$-edge Labeling of Infinite Octagonal Grid Open
For two given non-negative integers $h$ and $k$, an $L(h,k)$-edge labeling of a graph $G=(V(G),E(G))$ is a function $f':E(G) \xrightarrow{}\{0,1,\cdots, n\}$ such that $\forall e_1,e_2 \in E(G)$, $\vert f'(e_1)-f'(e_2) \vert \geq h$ when $…
View article: On the Span of $l$ Distance Coloring of Infinite Hexagonal Grid
On the Span of $l$ Distance Coloring of Infinite Hexagonal Grid Open
For a graph $G(V,E)$ and $l \in \mathbb{N}$, an $l$ distance coloring is a coloring $f: V \to \{1, 2, \cdots, n\}$ of $V$ such that $\forall u,\;v \in V,\; u\neq v,\; f(u)\neq f(v)$ when $d(u,v) \leq l$. Here $d(u,v)$ is the distance betwe…
View article: Improved Bounds on the Span of $L(1,2)$-edge Labeling of Some Infinite Regular Grids
Improved Bounds on the Span of $L(1,2)$-edge Labeling of Some Infinite Regular Grids Open
For two given nonnegative integers $h$ and $k$, an $L(h,k)$-edge labeling of a graph $G$ is the assignment of labels $\{0,1, \cdots, n\}$ to the edges so that two edges having a common vertex are labeled with difference at least $h$ and tw…
View article: Local Relay Selection in Presence of Dynamic Obstacles in Millimeter Wave D2D Communication
Local Relay Selection in Presence of Dynamic Obstacles in Millimeter Wave D2D Communication Open
Blockage due to obstacles in millimeter wave (mmWave) device to device (D2D) communication is a prominent problem due to their severe penetration losses. Potential user equipments (UEs) in vicinity of the source UE must be explored in orde…
View article: Distributed Relay Selection in Presence of Dynamic Obstacles in Millimeter Wave D2D Communication
Distributed Relay Selection in Presence of Dynamic Obstacles in Millimeter Wave D2D Communication Open
Millimeter wave (mmWave) device to device (D2D) communication is highly susceptible to obstacles due to severe penetration losses and requires almost a line of sight (LOS) communication path. D2D channel condition is local to devices/user …
View article: Network-Assisted D2D Relay Selection Under the Presence of Dynamic Obstacles
Network-Assisted D2D Relay Selection Under the Presence of Dynamic Obstacles Open
Millimeter wave (\texttt{mmWave}) channels in device to device (\texttt{D2D}) communication are susceptible to blockages in spite of using directional beams from multi-input multi-output (\texttt{MIMO}) antennas to compensate for high prop…
View article: Network-Assisted D2D Relay Selection Under the Presence of Dynamic\n Obstacles
Network-Assisted D2D Relay Selection Under the Presence of Dynamic\n Obstacles Open
Millimeter wave (\\texttt{mmWave}) channels in device to device (\\texttt{D2D})\ncommunication are susceptible to blockages in spite of using directional beams\nfrom multi-input multi-output (\\texttt{MIMO}) antennas to compensate for high…
View article: Non-Phase Matched Stimulated Parametric Scattering in Semiconductor Plasma: Temporal Effects
Non-Phase Matched Stimulated Parametric Scattering in Semiconductor Plasma: Temporal Effects Open
Present paper is an effort to study stimulated parametric scattering of an electromagnetic wave propagating in a doped semiconductor plasma medium.We study theoretically the time evolution of a parametrically amplified wave in a non-phase …
View article: Amplitude Modulation and Demodulation of Electromagnetic Wave in Magnetised Diffusive Semiconductors
Amplitude Modulation and Demodulation of Electromagnetic Wave in Magnetised Diffusive Semiconductors Open
Analytical investigations are made for the amplitude modulation as well as demodulation of an electromagnetic wave propagating in a diffusive semiconductor medium. Using hydrodynamical model of semiconductor plasmas, we have found the valu…
View article: Acousto-optic modulation in ion implanted semiconductor plasmas having SDDC
Acousto-optic modulation in ion implanted semiconductor plasmas having SDDC Open
The present paper is aimed to the exploration of acousto-optic (AO) modulational amplification in ion implanted semiconductors. The AO modulational process has been treated as a four wave parametric mixing process and the effective third-o…
View article: Phonon-Plasmon Interactions in Inhomogeneous Semiconductor Plasma Embedded with Nanoparticle Cluster
Phonon-Plasmon Interactions in Inhomogeneous Semiconductor Plasma Embedded with Nanoparticle Cluster Open
Phonon-plasmon interaction in inhomogeneous piezosemiconductor embedded with a nanoparticle cluster is examined using hydrodynamic model of plasma and macroscopic model of piezoelectric media.Present work dealt with the extensive investiga…
View article: Phase mismatched optical parametric generation in semiconductor magnetoplasma
Phase mismatched optical parametric generation in semiconductor magnetoplasma Open
Optical parametric generation involves the interaction of pump, signal, and idler waves satisfying law of conservation of energy. Phase mismatch parameter plays important role for the spatial distribution of the field along the medium. In …
View article: Parametric interactions of acoustic waves in semiconductor quantum plasmas with strain dependent dielectric constants
Parametric interactions of acoustic waves in semiconductor quantum plasmas with strain dependent dielectric constants Open
Using quantum hydrodynamic model (QHD) of semiconductor plasma for a one-component we present an analytical investigation on parametric interaction of a laser radiation in an unmagnetised material with a strain-dependent dielectric constan…
View article: Amplitude modulation and demodulation of an electromagnetic wave in magnetized ion-implanted semiconductor plasmas having SDDC
Amplitude modulation and demodulation of an electromagnetic wave in magnetized ion-implanted semiconductor plasmas having SDDC Open
In communication processes, amplitude modulation is very helpful to save power using a single band transmission. Using the hydrodynamical description of semiconductor plasma analytical investigations are made for the amplitude modulation a…
View article: Electron-Phonon coupling in magnetized semiconductor quantum plasmas
Electron-Phonon coupling in magnetized semiconductor quantum plasmas Open
Present paper deals with electron-phonon coupling in piezoelectric n-type magnetized semiconductor plasma under quantum regime. A quantum modified dispersion relation is derived for the evolution of desired electron-phonon coupling in semi…
View article: Acousto-Electric Interaction in Magnetised Piezoelectric Semiconductor Quantum Plasma
Acousto-Electric Interaction in Magnetised Piezoelectric Semiconductor Quantum Plasma Open
Amplification of an acoustic wave is considered in magnetised piezoelectric n-type semiconductor plasma under quantum hydrodynamic regime.The important ingredients of this study are the inclusion of quantum diffraction effect via the Bohm …
View article: Cooperative spectrum mobility in heterogeneous opportunistic networks using cognitive radio
Cooperative spectrum mobility in heterogeneous opportunistic networks using cognitive radio Open
With the advent of smarter technologies in cellular networks, often the bands used for lower versions remain unoccupied. To utilize that, in this paper, a new paradigm of cognitive radio has been proposed, where the nodes of a self-organiz…