Amar S. Bhalla

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A magnetically controlled elastically driven electroporation phenomenon, or magneto-elasto-electroporation (MEEP), is discovered while studying the interactions between core-shell magnetoelectric nanoparticles (CSMEN) and biological cells in the presence of an a.c. magnetic field. In this paper we report the effect of MEEP observed via a series of in-vitro(More)
In general, piezoelectric materials are employed as the sources that provide stress coupled electric polarization, while piezomagnetic [1] or magnetostrictive [2¿4] materials are used as the sources that provide strain coupled magnetization in magnetoelectric composites. Computer models of ME efficiency are often constructed based on the coupling of(More)
Phase modulators are one of the key components of many applications in electromagnetic and opto-electric wave propagations. Phase-shifters play an integral role in communications, imaging and in coherent material excitations. In order to realize the terahertz (THz) electromagnetic spectrum as a fully-functional bandwidth, the development of a family of(More)
The doping effect on the structural, microstructural and dielectric properties of bismuth layer structured SrBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub>(SBN) ferroelectric ceramics has been investigated. The samples were obtained from the solid state reaction sintering method. Particularly, the A-site cation substitution of Sr<sup>2+</sup> by La<sup>3+</sup>(More)
In this work, the influence of Ge<sup>4+</sup> substitution on dielectric and ferroelectric properties of high dielectric BaFe<sub>0.5</sub>Nb<sub>0.5</sub>O<sub>3</sub> ceramics was studied. The BGFN powders with a formula BaGe<sub>x</sub>(Fe<sub>0.5</sub>Nb<sub>0.5</sub>)<sub>1-x</sub>O<sub>3</sub> where x = 0.01, 0.015, 0.02 and 0.025 were produced via(More)
Both the intrinsic and secondary contributions to the electrooptic (EO) coefficients in ferroelectric PMN-PT, PZNPT, and (Sr,Ba)Nb2O6 crystals, were studied. At low frequencies space charge and acousto-optic coupling effects dominate the apparent EO effect measured, which however decreases steeply upon increasing of frequency. At certain frequencies(More)
In this work, the effect of two stage sintering and sintering temperature on dielectric properties of perovskite PbTiO<sub>3</sub> ceramics are reported. High density lead titanate (PbTiO<sub>3</sub>) ceramics were prepared by a solid solution method. Several sintering temperatures were selected to prepare the samples. The dielectric constant of these(More)
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