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The shadowing effect is featured in ensembles of two small spherical plasmonic particles and three particles arranged at the vertices of a triangle on the basis of the equation system for self-consistent currents excited inside dielectric and conducting particles by an incident electromagnetic wave field. The system for self-consistent currents is a solution of the collective modes excitation problem...
Synthesis of high performance p-type transparent conducting oxides has become important in the context of thin film transistors. Tin oxide is a promising material for p-type conductivity by various dopants like Li, Al, In and N. In this study, nanocrystalline indium doped tin oxide powders were synthesized by Flame spray pyrolysis (FSP) from inorganic precursors. Two batches of samples with systematically...
Here we propose that a novel curcumin doped ZnO nanoparticles can be synthesized by a mixture of zinc nitrate and curcumin in the presence of potassium hydroxide. The particles self-assemble to form spindle-like morphologies at ambient condition. The curcumin doped ZnO nanoparticles are similar to ZnO in their scanning electron microscopy images and X-ray diffraction pattern with hexagonal phase diffraction...
In this paper, we present the opto-electrical characteristics of the fabricated PVA based photodetector on a low thermal mass platform having the capability to respond from UV to mid-IR region. The taxonomic study of current-voltage characteristics of the fabricated device has been carried out and the Metal-Semiconductor Polymer-Metal structure indicated the characteristics of Schottky diode. The...
Colloidal nanocrystals (NCs) are free-standing nano-sized objects, coordinated by a layer of organic amphiphilic molecules which allows their dispersion in solvents, making easy the manipulation. The organic molecules play a central role in all the synthesis steps by controlling the NC surface during the growth, allowing to obtain a fine control over the size and the shape of NCs. In addition, organic...
This work provides further insight on the long term stability, of Dye Sensitized Solar Cells (DSCs) assessed through prolong thermal aging at 85°C in dark. The investigation is focused on Bis(isothiocyanato)(4,4′-dicarboxylato-2,2′- bipyridine)(4,4′-dinonyl-2,2′-bipyridine)ruthenium(II) (Z907) sensitized devices employing commercially available ionic liquid electrolyte (livion 12, L12) with high boiling...
In this paper, the optical properties of a two-dimensional (2D) TiO2 nanobowl photonic crystal layer (PCL)-assisted Y3Al5O12:Ce (YAG:Ce) yellow ceramic-plate phosphor (CPP) and a free-standing K2SiF6:Mn (KSF:Mn) red film phosphor are introduced. By placing 2D TiO2 PCL-assisted YAG:Ce CPP onto a blue emissive light-emitting diode (LED) cup, we achieved an increase in the luminous efficacy of 1.53 times...
The development of novel carriers for the targeted photosensitizer delivery is a significant problem in a modern photodynamic therapy. Such a nanomedicine research is aimed to reduce the sides effects connected with insufficient selectivity of action for the applied dye. Porous calcium carbonate (CaCO3) particles were proposed as matrices for the photosensitizer “Photosens” encapsulation. Cellular...
Nanoelectromechanical systems have been developed for ultra-high frequency oscillators because of their small size and excellent material properties. Using flexural modes and electrothermal features in nanowires for frequency tuning necessitates a sound modeling approach. The quasicontinuum method was developed to link atomistic models with the continuum finite element method in order to study the...
Bioinspired mushroom-shaped microfiber arrayed surface demonstrates superhydrophobicity. Such a textured surface is fabricated by an electrohydrodynamic (EHD)-based structuring process, which is a combination of hot embossing, electrically induced growing and electrowetting. First, an ordinary micropillar array is prestructured on a conductive substrate through the hot embossing process. Second, another...
Semiconducting nanowires with transverse dimensions of less than 10nm are considered, among all, as good candidates for gas sensing applications. Interaction with molecules and surface materials modifies the transport properties of the wire, largely dominated by quantum effects. Here we propose a systematic analysis of the transport properties of a silicon nanowire interacting with a surface material...
We investigated the doping effects of chemical functionalization on graphene field-effect transistors (G-FETs). A pyrene backbone with an electron-withdrawing group (1-pyrenebutanoic acid succinimidyl ester, PBASE) and DMF acting as a solvent were used. The pyrene derivative was stably immobilized onto the graphene surface via π-π stacking between the two highly conjugated systems, confirmed by electric...
This paper presents the integration of a flexible capacitive force sensor based on carbon nanotube (CNT) thin-film with a multi-modal artificial skin cell, which is built on a hexagonal shaped, rigid, printed circuit board (PCB). In this work, the previously utilized copper beryllium (CuBe2) based force sensors in the cell are replaced with CNT-based sensors, as CNT is an interesting material for...
Society is aging so there is a need for new reliable mobile health monitoring systems. A wireless, stretchable and mobile health monitoring platform has been developed which consists of a wireless stretchable, biocompatible sensor tag placed on the skin and an RFID reader which collects and evaluates data and shows it on a display.
Transport of ionic species solvated in electrolytes depends on temperature. This dependence is much stronger in nanofluidics than large scale since the surface charge also varies with temperature. In this work, we introduce a new tool for the modulation of ionic transport inside nanochannels based on the effect of temperature. This effect can be used in the gating of nanochannels with comparable effectiveness...
Thin films of semiconducting and unsorted carbon nanotubes (CNT) are prepared on a transparent and flexible cyclic olefin polymeric substrate. The CNT biocompatibility is analyzed using L929 mouse fibroblasts and Human Umbilical Vein Endothelial Cells (HUVEC). Highly conductive poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films are also tested on the same substrate as an alternative...
SiO2 nanoparticles as platform for delivery of 3′-triazole analogues of AZT-triphosphate into cells were proposed. The results confirmed the successfulness of the Huisgen's 1,3-dipolar cycloaddition reaction for the preparation of the SiO2∼dNTP nanocomposites. It was shown that polymerase can recognize nucleoside triphosphates in the proposed nanobiocomposites and incorporate them into the growing...
It is reported the fabrication of multifunctional devices based on fibers, formed by highly aligned single wall carbon nanotubes (SWCNT), decorated by Ni nanoparticles. The electrochemical and gas sensing properties of such innovative hybrid nanosystems have been tested in view of several different technological applications. The ability of the SWCNT-based fibers to act as an electrode substrate for...
Robot-aided optical tweezers based manipulation tools have attracted increasing attention for advantages of trapping and manipulating micro/nano-scaled particles in biological environment. This paper presents a new research of using a robot-tweezers cell manipulation system to achieve in-vivo automated transportation of single red blood cells (RBCs). The position information of RBCs, extracted via...
In this paper we have demonstrated for the first time a piezoresistive microcantilever based platform for detection of one of the macronutrients in the soil in a fluid medium. Also a low cost piezoresistive microcantilever platform is introduced which is ideal for bio-sensing applications. The cantilever surface was immobilized with 18-crown-6 ether in a polyvinyl chloride and dioctyl sebacate matrix...
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