Green nanotechnology focuses on the development of new and sustainable methods creating nanoparticles, their localized assembly integration into useful systems devices in a cost-effective, simple eco-friendly manner. Here we present our experimental findings use Leidenfrost drop as an overheated charged green chemical reactor. Employing droplet aqueous solution hot substrates, this method is capable fabricating nanoscale coatings complex objects designing porous metal suspension foam form,...

Plasmonic metamaterials designed for optical frequency have to be shrunk down few 10th of nanometer which turns their manufacturing cumbersome. Here, we shift the performance metamaterial ultraviolet (UV) by using ultrathin nanocomposite as a tunable plasmonic fabricated with tandem co-deposition. It provides possibility realize absorber UV marginal angle sensitivity. Its resonance and intensity can adjusted changing thickness filling factor composite. Presented approach high could pave way...

In this study, we devised a novel nanofibrous adsorbent made of polyethersulfone (PES) for removal methylene blue (MB) dye pollutant from water. The polymer shows low isoelectric point thus at elevated pHs and, being nanofibrous, can offer huge highly hydroxylated surface area adsorption cationic MB molecules. As an extra challenge, to augment the adsorbent's properties in terms capacity neutral and acidic conditions thermal stability, vanadium pentoxide (V₂O₅) nanoparticles were added...

An optically driven metamaterial with a photoswitchable weak and strong molecular-plasmonic coupling is demonstrated. In this active perfect absorber, the absorption band can be broadened more than 150 nm (split an energy difference of 780 meV) by UV irradiation, which demonstrates new class tunable absorber for visible frequencies.

Abstract The first smart plasmonic absorber based on metal‐polymer bionanocomposites performing via conformational changes of the biological functional agent, i.e., a protein, is introduced. Such progress done through bridging gaps between nanofluid filtration, plasmonics, and bioswitching. Initially, biofunctionalized nanofibrous membrane developed that could filter out metal nanoparticles (<100 nm) from an aqueous stream with high separation efficiency (97%). This approach brings about...

Plasmonics, as an emerging field, aims to exploit the unique optical properties of metallic nanostructures enable routing and active manipulation light on nanoscale. Plasmonic heating is a phenomenon, which recently recognized for its potential in photothermal therapy. Here we show first proof-of-concept experiment based plasmonic selective precise embedding nanoparticles polymeric matrix. We demonstrate way situ fabrication nanocomposites different forms including patterning, writing,...

Here, we introduce the first experimental proof of coherent oscillation and coupling photoswitchable molecules embedded randomly in a polymeric matrix acting cooperatively upon illumination with UV light. In particular, demonstrate specular reflection Brewster phenomenon alteration photochromic molecular dipole antennas. We successfully concept wavelength, which is based on dipolar interaction between radiating dipoles surrounding possessing net moment, as key tool for highly localized...

An interface supporting plasmonic switching is prepared from a gold substrate coated with polymer film doped photochromic molecular switches. A reversible light-induced change in the surface plasmon polariton dispersion curve of experimentally demonstrated, evidencing group and phase velocity. The capabilities are furthermore successfully applied to achieve focus control lens. results imply realization nonvolatile units providing complex functionalities based on refraction delay.

A photoswitchable, transparent, and highly conducting device that functions via nanophotonic interaction of a metal film coated with spirophenanthrooxazine (SPO) molecules embedded in polymeric matrix fabricated through spin coating is demonstrated. The possesses additional novel functionality as photobleaching gas sensor.

Abstract We demonstrate a transferable device that can turn wettability of surfaces to sticky or slippy, as per requirement. It is composed polymeric yarn with fibrous structure, which be lifted and placed on any surface render it the unique properties. introduce Polyvinylidenefluoride (PVDF) random fiber biomimetic rose petal surface. When decorated PVDF nanofibers yarns, mesh transform from state into grass leaf slippy state. sticky, hydrophilic metal coin, converts coin super hydrophobic....

There is a growing interest in modulating the temperature under illumination of light. As heat source, metal nanoparticles (NPs) have played an important role to pave way for new branch plasmonics, i.e., thermo-plasmonics. While thermo-plasmonics been well established photo-thermal therapy, it has received comparatively less attention materials science and chemistry. Here, we demonstrate first proof concept experiment local chemistry graphitization metalized polymeric nanofibers through...

An optically active bio-material is created by blending natural silk fibers with photoisomerizable chromophore molecules—azobenzenebromide (AzBr). The material converts the energy of unpolarized light directly into mechanical work a well-defined direction action. feasibility idea to produce driven microsized actuators on basis (silk) proven. switching behavior embedded AzBr molecules was studied in terms UV/Vis spectroscopy. To test opto-mechanical properties modified and structural changes...

M. Elbahri and co-workers show on page 705 how photochromic molecules placed top of a highly reflective metal very strong optical absorption upon illumination with UV light. A tunable metamaterial perfect absorber is demonstrated, wherein the absorption/reflection can be adjusted by or white-light irradiation. The high confinement light molecule irradiation (no reflection, left side) shown in this image, while white illuminated (right not remove reflection base (gold).

Focus of present work is to develop a setup for high strain rate electromagnetic forming thin aluminum sheets (0.5, 1.0, 1.5 and 2.0 mm) optimization parameters. Flat spiral coil 99.9% pure Cu strip (2.5x8.0 with self-inductance 11 μH, 13 no. turns resultant outer diameter 130mm has been fabricated was coupled capacitor bank energy, voltage capacitance 9 kJ, 900 V 22.8 mF, respectively. To optimize the design, commercially available software FEMM-4.2 used simulate field profile generated by...

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to "Plasmon-Mediated Embedding of Nanoparticles in Polymer Matrix: Nanocomposites Patterning, Writing, and Defect Healing"Ahnaf Usman Zillohu, Ramzy Abdelaziz, Mehdi Keshavarz Hedayati, Thomas Emmler, Shahin Homaeigohar, Mady Elbahri*Cite this: J. Phys. Chem. C 2012, 116, 36, 19611Publication Date (Web):August 31, 2012Publication History Published online31 August 2012Published inissue 13...

On page 4771, Mady Elbahri and co-workers report on the fabrication of a smart, nanofibrous, plasmonic bio-nanocomposite developed for first time by bridging gaps between nanofluid filtration, plasmonics, bioswitching. The primary bio(protein)-functionalized nanofibrous membrane catches metal nanoparticles through switchable conformational changes protein, despite its macroporosity. nanoparticle/biofunctionalized mat can subsequently act as an omnidirectional black absorber.

In this study optimization of maximum travel speed that can be achieved for Friction Stir Welding Aluminum Alloy 2014-T6 without compromising the mechanical properties was carried out. Joints were made at different speeds 200, 300, 400, 500 and 600 mm/min with constant tool rotational 800 rpm tilt angle 2.The samples characterized by stereo microscopy, optical scanning electron Vickers microhardness testing tensile testing. Microstructural features as-welded revealed refined equiaxed grains...

Flat spiral coil for electromagnetic forming system has been modelled in FEMM 4.2 software. Copper strip was chosen as material designing the actuator coil. Relationship between height to width ratio (S-factor) of copper and coil’s performance studied. Magnetic field intensities, eddy currents Lorentz force were calculated coils that designed using six different 'S-factor' values (0.65, 0.75, 1.05, 1.25, 1.54 1.75), keeping cross-sectional area same. Results obtained through simulation...