Showing papers by "Sangeeta Kale published in 2017"
TL;DR: The TA-based ferrofluids have great potential for in vivo/clinical MFH cancer therapies and have higher killing efficiency towards MCF-7 cancer cells in in vitro studies.
46 citations
TL;DR: In this paper, a nanomaterial modified optical fiber sensor is studied for sensing H2S at room temperature for very low concentrations from 1ppm to 5ppm, where ZnO nanoparticles were embedded into poly-methyl-metha-acrylate (PMMA) matrix and coated on the mirror tip of the singlemode fiber in the Fabry-Perot interferometric configuration to a 1550-nm laser source.
33 citations
TL;DR: In this paper, the authors reported LPG sensing of gold-sensitized SnO2 nanostructured film fabricated by an easy spray pyrolysis deposition method whose surface morphology is confirmed by field-emission scanning electron microscopy and atomic force microscopy images and structure by X-ray diffraction pattern.
31 citations
TL;DR: A fine cross-linking between CS and DS has been demonstrated to form CS-DS NPs and their interaction with drug has been evaluated using conventional characterization tools.
31 citations
TL;DR: In this article, a stand-alone device working on the electrical metamaterial concept, operating at 2.47 GHz (ISM band), using merely 10μL sample, was proposed to detect petrol/ethanol ratio in given hybrid fuel.
Abstract: A stand-alone device working on the electrical metamaterial concept, operating at 2.47 GHz (ISM band), using merely 10 μL sample is proposed to detect petrol/ethanol ratio in given hybrid fuel. Systematic shifts in the transmission frequency as well as magnitude are observed, up to a maximum of ~160 MHz and 12 dBm with the hybrid fuels. The sensing was fast with an instantaneous recovery, promising an accurate and sensitive device of detection of flex fuel.
24 citations
TL;DR: In this article, a ZnO nanoparticles-coated Fabry-Perot interferometer based optical fiber sensor is demonstrated to detect different gasoline blend concentrations in ethanol.
Abstract: ZnO nanoparticles-coated Fabry-Perot interferometer based optical fiber sensor is demonstrated to detect different gasoline blend concentrations in ethanol. Different gasoline blends (with ethanol varying from 0% (E0) to 100% (E100)) have been subjected to the sensor to observe the change in refractive index of the material that leads to the wavelength shift and fringe visibility change of the interference spectrum. The sensor shows the remarkable response with different gasoline blend mixtures within the time span of 0–60 s in terms of wavelength and Intensity (power) shift. The maximum wavelength shift of 12.1 nm is observed for E0 mixture and least of 3 nm for E100 in 60 s, respectively. A fast response time and recovery time of 5 s and 9 s, respectively, are obtained for E0 mixture. The results are related to the formation of interference pattern due the ZnO-mediated-Fabry-Perot cavity, changes in refractive index with the change in external gaseous environment, changes in fringe visibility of the spectrum and the interaction of oxygen vacancies on ZnO surface with the gasoline moieties. The rates of sensing and recovery times are related to the Reid vapor pressures of ethanol and gasoline. Hence a dual scale of sensing, both in terms of wavelength shift (refractive index) and intensity shift (fringe visibility) has been proposed for gasoline blend sensing.
23 citations
01 Jan 2017
TL;DR: This review focuses on the applicability of nanomaterials for dermal applications (such as wound healing, inflammation control, or postburn sepsis treatments) and the effects of the size of nanoparticles, their surface/volume ratio, and their chemical and physical properties are correlated to their crucial role in affecting cellular membrane integrity, metabolic processes, and morphology.
Abstract: Microorganisms have started showing resistance to conventional antibiotics, in recent times, mostly due to the broad and inappropriate use of antibiotic treatments. In this context, nanomaterials (organic/inorganic) are proving to be good alternatives, because they can work as antimicrobial agents, or they can enhance and complement the activity of conventional drugs. This review focuses on the applicability of nanomaterials for dermal applications (such as wound healing, inflammation control, or postburn sepsis treatments). Nanomaterials such as ZnO, TiO2, CuO, SiO2, silver, gold, and carbon [fullerenes, carbon nanotubes (CNTs) and graphene oxide (GO)] are being explored. They form either a part of a formulation or as hosts for drug encapsulation. Stimuli-sensitive properties of nanomaterials are being envisaged for smarter medicinal patches. The effects of the size of nanoparticles, their surface/volume ratio, and their chemical and physical properties are correlated to their crucial role in affecting cellular membrane integrity, metabolic processes, and morphology.
19 citations
27 Jul 2017
TL;DR: In this paper, a GNR-LSMO complex with 10% manganite (La 0.7Sr0.3MnO3 (LSMO)) has been incorporated using octadecyl-amine (ODA) as the conjugating agent.
Abstract: Incorporation of good magnetic moment and conductivity in a weakly magnetic matrix via doping of an impurity projects huge applications in the domain of magneto-electronics and spintronics. This is quite challenging because the system has to work in unison so that the there is an exchange of electrons and spins between the magnetic grains and the host matrix. Graphene-nano-ribbons (GNRs) possess defect states at their edges and shows good conductivity with weak magnetism. Such systems are studied as host matrix, in which 10% manganite (La0.7Sr0.3MnO3 (LSMO)) has been incorporated using octadecyl-amine (ODA) as the conjugating agent to form a GNR-LSMO complex. While Raman analysis of GNR shows reduction in disorder after complex formation, the system shows magnetic transition at 350 K. The magnetic-force-microscopy shows direct evidence of enhanced magnetism as compared to only GNR, especially in the regions where the manganite grains are in proximity to the GNR matrix. A novel magneto-electronic material can be envisaged with further careful grain-boundary engineering.
5 citations
23 Apr 2017
TL;DR: In this paper, a single mode fiber is used in a Y-coupler mode; the mirror tip which is coated with bromothymol blue (BTB), homogeneously mixed in polyvinyl alcohol (PVA) matrix.
Abstract: A single mode fiber is used in this study, in a Y-coupler mode; the mirror tip which is coated with bromothymol blue (BTB), homogeneously mixed in polyvinyl alcohol (PVA) matrix. The setup operated at 1550 nm, and was used to sense extremely small quantities of ammonia gas, at room temperature. The sensor was able to detect ammonia in the range of 1.5 ppm to 150 ppm; with observed sensitivity in terms of wavelength shift of 0.7 nm. The sensor showed excellent reversibility with fast response and recovery time of the order of few seconds. The possible interaction of dye with ammonia was studied and compared with chloroform.
3 citations
01 Jan 2017
TL;DR: In this paper, the effect of Cu doping on the structural, optical and morphological properties of Cadmium Oxide (CdO) have been studied and the preparation and characterization of CdO (undoped and 2 % Cu-doped) has been discussed.
Abstract: Nanostructured materials have generated considerable interest owing to their physical and chemical properties that differ from those of their bulk counterparts. Cadmium oxide (CdO) is an important semiconducting material with varying band gap from 2.2 to 2.9 eV used for various applications. Due to its high electrical conductivity and optical transmittance in the visible region, this material is having potential application in photovoltaic devices as well. This study focuses on the preparation and characterization of CdO (undoped and 2 % Cu-doped) produced by facile sol–gel spin coating. Effect of Cu doping on the structural, optical and morphological properties of CdO have been studied.
2 citations
TL;DR: In this paper, the Fabry-Perot FP cavity length has been modified using different nanometric films at the mirror end of the FP system and the cavity length effects on the interferometric response of the system was studied by splicing a small piece of PM-PCF fiber with SMF-28 connected to a laser broadband source centered at 1550 nm.
Abstract: The Fabry-Perot FP cavity length has been modified using different nanometric films at the mirror end of the FP system. The cavity length effects on the interferometric response of the system was studied by splicing a small piece of PM-PCF fiber with SMF-28 connected to a laser broadband source centered at 1550 nm. The changing nanometric dimensions of the FP cavity introduced a monotonically increasing phase shift in the interference spectrum, which has been correlated to various optical parameters of the system.