In this study, silver nanoparticles were chemically synthesized and deposited on glass substrates using a reducing agent of sucrose, at 50°C. Different characterizations including atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM), and Raman spectroscopy were obtained to study silvery substrates. Then, the silvery substrates were used as the SERS substrates to de...

In this paper, we introduce the concept of $g$-dual frames for Hilbert $C^{*}$-modules, and then the properties and stability results of $g$-dual frames  are given.  A characterization of $g$-dual frames, approximately dual frames and dual frames of a given frame is established. We also give some examples to show that the characterization of $g$-dual frames for Riesz bases in Hilbert spaces is ...

A dual-band directional antenna for Industrial, Scientific, and Medical (ISM) band application is proposed in this article. The consists of two layers substrates. first layer contains the square loop loading with a meander stub to realize dual band. second frequency selective surface (FSS) structure, which periodic array loops. phase shift from FSS reflection distance between are optimized fiel...

Abstract: Nickel was electrodeposited onto copper substrates with high {111} and {400} peak intensities. The grain size of coatings deposited onto the copper substrate with a higher {111} peak intensity was finer. Spheroidized pyramid morphology was obtained at low current densities on both copper substrates. By increasing the deposition current density, grain size of the coating was increased ...

Dissemination of circulating tumor cells (CTCs) in blood and their hetero-adhesion to vascular endothelial bed of distant metastatic secondary organs are the critical steps to initiate cancer metastasis. The rarity of CTCs made their in vivo capture technically challenging. Current techniques by virtue of nanostructured scaffolds monovalently conjugated with a single antibody and/or drug seem l...

The aim of this study was to evaluate the influence of accelerated aging (AAA) on the color stability of resin cements for bonding ceramic laminate veneers of different thicknesses. The occlusal surfaces of 80 healthy human molars were flattened. Ceramic laminate veneers (IPS e-max Ceram) of two thicknesses (0.5 and 1.0 mm) were bonded with three types of luting agents: light-cured, conventiona...

This paper proposes the effect of different dielectric constants to construct a microstrip patch antenna deployed on Jean's textile covering military wireless applications. Initially, structure is designed with double L-shaped slits inserted both sides an FR4 constant 4.4. Antenna dimensions are 40 ? 25 mm2, which miniature compared wave's length (?) at desired operating frequency. The proposed...

Due to the unique properties of C?F bonds, organofluorine compounds occupy a privileged space in pharmaceutical, agrochemical, and polymer industries. Carbofluorination reactions involve formation C?C bond, typically across ?-bond or another unsaturated functionality that is revealed upon situ activation. The design tailored substrates new catalyst systems has enabled carbofluorination chemistr...