A5103050609- Nonlinear Optical Materials Studies
- Nonlinear Optical Materials Research
- Glass properties and applications
- Laser-Ablation Synthesis of Nanoparticles
- Photorefractive and Nonlinear Optics
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Laser-Matter Interactions and Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Methane Hydrates and Related Phenomena
- Perovskite Materials and Applications
- Porphyrin and Phthalocyanine Chemistry
- Supercapacitor Materials and Fabrication
- Graphene research and applications
- Copper-based nanomaterials and applications
- nanoparticles nucleation surface interactions
- Nanoparticles: synthesis and applications
- Phase-change materials and chalcogenides
- Diamond and Carbon-based Materials Research
- Solid-state spectroscopy and crystallography
- Organometallic Compounds Synthesis and Characterization
- Organoselenium and organotellurium chemistry
- Advanced battery technologies research
- Crystallography and molecular interactions
Wuhan University of Technology
2024
Sanya University
2024
University of Hyderabad
1996-2018
National Atmospheric Research Laboratory
2009
Combat Capabilities Development Command Soldier Center
1997
We present a simple and eco-friendly biosynthesis of silver nanoparticles using Coriandrum sativum leaf extract as reducing agent. The aqueous ions when exposed to were reduced resulted in whose average size is 26 nm. characterized by UV-Visible, X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FT-IR) transmission electron microscopy (TEM) techniques. Nonlinear optical properties studied Z-scan technique with 6 ns pulse duration at 532 nonlinear refractive index third-order...
We present an overview of the simple and environmentally benign protocol we have developed recently, for in situ generation metal nanoparticles inside polymer films by mild thermal annealing, leading to free-standing as well supported thin nanoparticle-embedded polymer. The fabrication chemistry is discussed spectroscopic/microscopic characterizations silver gold poly(vinyl alcohol) film are presented. Optical limiting characteristics silver-polymer system investigated detail preliminary...
A series of ferrocenyl substituted pyrazaboles were prepared, which have an electron-withdrawing pyrazabole moiety as the central core, with a D–π–A–π–D structural motif (D = donor, acceptor) and containing variety π bridges. crystallographic study reveals that core was observed in planar geometry. Strong two-photon absorption visible region three-photon near IR pyrazaboles. It 2PA cross-section increases conjugation length.
Methane hydrate formation/dissociation behavior in the presence of a fixed amount (10 g) silica grains with mean diameter 30–70 μm has been examined non-stirred reactor vessel. We systematically varied water from 10 to 200 g steps and probed methane formation kinetics overall conversion silica–water–methane system. Our results showed that monotonically increased 6.14 67.82% by reducing content 20 1 g/g SiO2, while under similar experimental conditions, pure system was 4.1%. Interestingly,...
Abstract Emerging as a leading contender for economical, high‐security grid‐scale energy storage, rechargeable aqueous zinc‐ion batteries (AZIBs) are currently facing the challenge in its progression due to absence of cathode materials with high density. In this study, we design V 2 O 5 ⋅ nH O, GO and CNTs composite (HVO/GO‐CNTs) film through freeze‐drying vacuum filtration. This binder‐free AZIBs exhibits remarkable electrochemical performance, featuring capacity 387 mAh g −1 at 0.2 A...
Third order optical nonlinearities of various solvents such as Dimethylformamide (DMF), ethanol, chloroform, CCl4, acetone, toluene, Tetrahydrofuran (THF), and CS2 are studied in picosecond (ps) femtosecond (fs) time scales using Z-scan technique. All the show reverse saturable absorption behavior which is attributed to significant two-photon three-photon processes ps fs scale regimes, respectively. Nonlinear refraction studies reveal positive signature nonlinearity both pulse regimes. We...
Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> -acticated silica-hafnia glass-ceramic waveguides were fabricated by bottom-up and top-down approaches. The pros cons of the procedures in terms optical, spectroscopic structural properties are reported, particular regarding attenuation coefficient, NIR emission, local environment for rare-earth ions. results confirm significance SiO <sub...
Silver nanoparticles were generated using laser ablation technique in emulsified isobutyl acrylate solution which the are stabilized and embedded over acrylic polymerized solution. Further, colloidal solutions characterized with atomic force microscope (AFM), scanning electron (SEM) Fourier transform infrared spectrophotometer (FTIR). AFM image results of displays silver layer dispersion spherical across polymer eruptions can be seen clearly. In addition, FTIR spectrum SEM images validate...
Recently macrocyclic organic dyes have attracted a lot of attention as possible candidates for applications in optical power limiters and pulse shaping devices. The fundamental requirement limiting is that the system must exhibit fluence dependent reverse saturable absorption. Copper Pthalocyanines possess larger excited state absorption cross section than ground section. They are thus suitable applications. Most nonlinear studies been done solutions 1 . For such intracavity devices solid...