
Nisha Hiralal MakaniIndian Institute of Technology Gandhinagar · Faculty of Physics
Nisha Hiralal Makani
Master of Science
About
23
Publications
3,068
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
212
Citations
Introduction
Growth and Structure of nanostructure embedded organic thin films.
Additional affiliations
July 2014 - December 2015
Publications
Publications (23)
High entropy alloys have emerged recently as promising candidates for high-temperature applications. This study explores the detailed oxidation behavior of CoCrFeMnNi alloy by using a combination of in-situ, short-duration and long-duration high-temperature exposure up to 1000 ⁰C. The study reveals Cr and Mn played a significant role in the oxidati...
Sustainable energy harvesting is the need of the hour, and piezoelectric nanogenerators (PENG) offer tremendous
opportunities in this field. We have investigated the mechanical energy harvesting applications of a nanocomposite comprising a low-dimensional halide perovskite (HP) and polyvinylidene fluoride (PVDF). Cs4PbBr6 HP was prepared using mech...
Chiral halide perovskites are being extensively studied due to their promising spintronic and optoelectronic properties, where the organic chiral ligands introduce chirality into halide perovskites. Right-handed and left-handed chiral materials are mirror images of one another and break the inversion symmetry, which produces ferroelectricity. In th...
The organic–inorganic metal halide perovskites (OIMHPs) have been widely explored in recent years due to their competent performance in energy conversion and storage applications. We compare the time dynamics of structural, morphological, and optoelectronic attributes of Methylammonium lead Iodide (MAPbI3) thin films synthesized by a two-step solut...
Spin pumping is a key property for spintronic application that can be realized in ferromagnet/Heavy metal bilayers. Here we demonstrate the possibility of improving spin pumping in Permalloy (Py)/Tantalum (Ta) bilayers through control of Ta heavy metal deposition temperature. Through a combination of structural and ferromagnetic resonance based mag...
The emergence of lead-free metal-halide perovskites in modern-day energy research is primarily due to their competent semiconducting and optoelectronic properties, as well as their nontoxicity and improved stability in ambient operating conditions. However, a detailed understanding of ion transport dynamics and the relaxation behavior of these mate...
We report the dielectric properties of a two-dimensional layered Ruddlesden-Popper halide perovskite Cs2PbI2Cl2 synthesized via a simple mechanochemical process to explore fundamental aspects of ionic conduction and relaxation mechanism over a wide temperature and frequency range. Several experimental techniques, such as complex impedance spectrosc...
We report the dielectric properties of a two-dimensional layered Ruddlesden-Popper halide perovskite
Cs
2
PbI
2
Cl
2
synthesized via a simple mechanochemical process to explore fundamental aspects of ionic conduction and relaxation mechanism over a wide temperature and frequency range. Several experimental techniques, such as complex impedance spe...
We report on the facile emulsion approach to synthesize zero-dimensional inorganic Cs4PbBr6 samples and explore their structural and luminescence properties. Crystallinity and morphological characterizations are performed, and the band gap is evaluated to be around 2.29 eV. The photoluminescence spectra of Cs4PbBr6 perovskite exhibit peaks in the g...
The potential use of halide perovskite materials in ferroelectric and piezoelectric devices has recently been unraveled, but for widespread applications, detailed and systematic experiments are essential. We report on a...
We report on the fabrication and systematic characterization of highly stable lead-free CsAgBr2 perovskite nanocrystals (PNC) processed at room temperature without the involvement of any organic ligand. X-ray diffraction (XRD) measurements and Rietveld analysis of the data reveal that the synthesized perovskites are in the orthorhombic phase with s...
In the present work, we demonstrate an in-situ synthesis of phase-change material (n-hexacosane) loaded exfoliated-graphite nanosheets (EGPCM) by modified hydrothermal method, exhibiting high thermal stability over extended thermal cycling. During the hydrothermal method, the exfoliation of graphite enables more surface area to absorb n-hexacosane...
A close-packed monolayer of a two-dimensional periodic array of Silica nanospheres (SNs) with gold (Au) crowning, forming a long-ranged archetypal plasmonic-photonic nanocomposite, has been achieved. We investigate the thermal crowning mechanism in such a nanocomposite using electron microscopy and X-ray diffraction techniques. Pre- and post-anneal...
We investigate neck mediated restructuring of silica nanospheres (SNs) of different radii assembled in a single-layer via sintering, resulting in the fabrication of size-tunable templates. We explore the influence of physical dimensions and mixing ratios of the participating SNs, over the neck formation and the assembly. We elucidate variation in t...
A facile method has been developed to fabricate nano-encapsulated paraffin wax within silica shell (SNsPCM) by in-situ hydrolysis and polycondensation of silica precursor. SNsPCM composite was studied using field-effect scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), X-ray Diffractometry (XRD), Raman and Fourier trans...
V-N-codoped TiO 2 photo-catalyst is synthesized by sol-gel method to sensitize TiO 2 to visible light. The concentrations of N were varied to understand the role of N in increasing visible light absorption and charge separation in V-N-codoped TiO 2 samples. The anatase phase is well maintained in codoped TiO 2 for all N-concentration. Major narrowi...