A5065498785- Ferroelectric and Piezoelectric Materials
- Optical Network Technologies
- Elasticity and Material Modeling
- Advanced Photonic Communication Systems
- Acoustic Wave Resonator Technologies
- Semiconductor Lasers and Optical Devices
- Microwave Dielectric Ceramics Synthesis
- Polymer Nanocomposites and Properties
- Structural Behavior of Reinforced Concrete
- Solid-state spectroscopy and crystallography
- Rheology and Fluid Dynamics Studies
- Photonic Crystal and Fiber Optics
- Mechanical Behavior of Composites
- Nanowire Synthesis and Applications
- Advanced Optical Network Technologies
- Multiferroics and related materials
- Semiconductor materials and interfaces
- Polymer crystallization and properties
- Fatigue and fracture mechanics
- Metallurgy and Material Forming
- Luminescence Properties of Advanced Materials
- Silicon Nanostructures and Photoluminescence
- Glass properties and applications
- Metal Forming Simulation Techniques
- Tribology and Wear Analysis
Technion – Israel Institute of Technology
2023-2024
Indian Institute of Technology Kharagpur
1998-2023
Purdue University West Lafayette
2022-2023
Indian Institute of Technology Bombay
2021
Midnapore Medical College and Hospital
2019
National Council Of Educational Research And Training
2009-2014
Vidyasagar University
1998-2007
Defence Metallurgical Research Laboratory
2007
Indian Institute of Technology Indore
2003-2004
The ability of morphing aircraft to adapt their shape in flight hinges on the incredible flexibility skins, which have multiple degrees freedom. This paper presents a compact overview latest advancements polymorphing skins for aircraft, focusing polymeric electroactive polymers, and memory polymers. It examines critical mechanical properties such as flexibility, durability, resilience that influence application wings. By detailing synthesis processes, including use natural rubber, silicone,...
A swift and effective technique was employed to fabricate a novel supramolecular metallohydrogel, named Mg@5AP, by incorporating Mg(II) ions. This groundbreaking gel utilized 5-amino-1-pentanol as low molecular weight gelator,...
A different kind of multiferroics with composite character, xLa0.7Sr0.3MnO3 (LSMO)–(1−x)ErMnO3 (EMO) (x=0.1, 0.2), where EMO is the ferroelectric (FE) and LSMO ferromagnetic (FM) component, has been studied. Magnetization versus magnetic field measurements at 300K show prominent hysteresis loops, attesting room temperature FM behavior these multiferroic composites. Dielectric constant (ε) as a function reveals that paraelectric-FE transition TC* (525K) maximum value ε (318) remain almost...
Ge nanocrystals of different sizes and densities have been grown on p-Si(100) substrates by radio-frequency magnetron sputtering. We also synthesized embedded in a SiO2 matrix, using suitable target, followed post-deposition annealing at 900 °C N2 atmosphere. Atomic force transmission electron micrographs revealed the formation clusters Si within respectively. Infrared x-ray photoelectron spectroscopy were used to study chemical bonding deposited films. Raman spectra for matrix show peak 300...
Abstract Graphene nanoplatelet loading is varied in carbon black‐filled nitrile butadiene rubber (NBR) to form a hybrid system. The mechanical properties of the system are determined by performing tension and compression tests. It found that graphene nanosheets well dispersed possessing strong interfacial interaction with NBR black. There an increment 9% tensile strength 4 phr without hampering ultimate strain. Further addition resulted degraded properties. Hyperelastic material models...
ABSTRACT The contribution of carbon black (CB) on changes in cross-link density (n) and physical entanglement has been quantified by swelling uniaxial stress–strain measurements considering Mooney–Rivlin parameters. Solution SBR (SSBR) vulcanizates with varying content high abrasion furnace (HAF) CB were studied. Rubber–filler networks increase the n values, which determined using Flory–Rehner modified Guth–Gold equations equilibrium study. parameter C1 was n, whereas C2, representing...
Excellent tire wear resistance, wet grip and rolling resistance have made silica-filled green elastomeric composites suitable for an electric vehicle to lower fuel consumption. The study of damage mechanics such materials has be carried out in order maximize safety during their usage. Accordingly, we aim develop a model characterize the effect geometric configuration composites. A 'VUSDFLD' subroutine is developed composites, which used finite element analysis (FEA) verified experimentally...
Ultrafine Pb0.93La.07Zr0.60Ti0.40O3 powder was synthesized by autoignition of a metal−polymer gel precursor on hot plate at very low temperatures without an additional calcination step. The X-ray diffraction result the as-burnt obtained after ignition showed presence rhombohedral lead lanthanum zirconate titanate (PLZT) with minute amounts unreacted PbO. average particle size calculated from transmission electron microscopy micrograph 1.75 nm. ultrafine PLZT sintered directly to 94 and 96%...
Abstract In this article, Mode‐I fracture and nanomechanical deformation of elastomeric composites are studied using nonlinear mechanics implicating computer modeling techniques like finite element analysis, the models developed verified experimentally. The effect low notch‐to‐width ratios (NWR) on failure properties J‐integral, geometry factor, crack tip opening displacement (CTOD), advancement, R‐curves is investigated. factor found to be decreasing by 96% when NWR increased from 0.06...
We report on the bistability in spin states of crossover (SCO) compound Fe(phen) 2 (NCS) polymer (polypyrrole) by frequency (1–100 kHz) and temperature dependent (305–457 K) electrical conductivity measurements. The structure growth SCO compounds conducting are obtained scanning electron microscopy, X-ray diffraction optical absorption thermal dependence ac σ ( ω ) shows clear formation a hysteresis loop its cooling heating cycle due to difference high low state. size, shape width loops...
Triaxial state of stress experienced by structural components due to complex geometry, discontinuities, or type loading can be studied tensile testing notched specimens. Herein, assessment deformation 316LN austenitic stainless under the uniaxial and triaxial stresses is presented based on finite element (FE) analysis digital image correlation (DIC). To study their effects, notches different root radii are incorporated in flat smooth The strength material increases presence notch. Among...