In this study, the localized surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) embedded in ZnO dielectric matrices were studied. Initially, continuous thin films deposited on Corning glass substrates via magnetron sputtering, followed by post annealing, resulting formation self-assembled nanoparticles. some cases, a heated substrate holder was employed to induce NP during deposition. The morphology studied using atomic force microscopy (AFM). Ultraviolet–visible spectroscopy...

Chemical vapor deposited WS2 monolayers are subjected for the first time to controlled pure biaxial tensile strain up 0.7%. From photoluminescence (PL) spectroscopy, trion and neutral exciton deformation potentials found be similar, approximately −130 meV/%. It is shown that excess carrier concentration as well residual in samples can determined from PL spectra. The experimental Grüneisen parameter of in-plane E′ Raman mode 1L-WS2 equal corresponding (E2g) bulk WS2. impact mechanical on...

Abstract Single- and bi-layer MoS 2 are two-dimensional semiconductors able to withstand very large deformations before failure, standing out as suitable templates for strain engineering applications flexible electronics. It is imperative, the proper integration of this material in practical applications, that relationship between property well understood. Two dimensional crystals fabricated by chemical vapor deposition or micromechanical exfoliation transferred onto substrates subjected...

Considering that the plasmonic properties of metallic nanoparticles (NPs) are strongly influenced by their dielectric environment, comprehension and manipulation this interplay crucial for design optimization functional systems. In study, behavior silver encapsulated in diverse copolymer environments was investigated, focusing on analysis emerging localized surface plasmon resonances (LSPRs) through both experimental theoretical approaches. Specifically, two series nanostructured ultrathin...

Ultrathin NiO films in the thickness range between 1 and 27 nm have been deposited on high-quality quartz substrates by direct magnetron sputtering under a rough vacuum with base pressure of 2 × 10-2 mbar. The target was metallic Ni; however, due to precursor material grown which most Ni already oxidized. Subsequent short annealing at temperatures about 600 °C furnace air resulted high crystallinity quality, as atomic force microscopy revealed. images surface morphology showed that were...

Surface-Enhanced Raman Spectroscopy (SERS) is a powerful, non-destructive technique for enhancing molecular spectra, first discovered in 1974. This study investigates the enhancement of signals from single- and few-layer molybdenum disulfide (MoS2) when interacting with silver nanoparticles. We synthesized MoS2 membrane primarily consisting monolayers bilayers through wet chemical vapor deposition method using metal salts. The nanoparticles were either directly grown on or placed beneath it....

Ultrathin Ag and Ni/NiO films are sequentially produced on Corning glass silicon substrates by means of magnetron sputtering. Post annealing treatment in a furnace with air at [Formula: see text]C may lead to the formation nanostructures NiO environment. Some these samples present local surface plasmon resonances (SPRs). The sequence which each layer is deposited, as well as, state structure appears play pivotal role optical properties nanostructures, attributed growth nanocomposite thin...

The reaction between Dy(NO3)3∙6H2O and the bulky Schiff base ligand, N-naphthalidene-2-amino-5-chlorobenzoic acid (nacbH2), in presence of organic NEt3 has led to crystallization structural, spectroscopic magnetic characterization a new heptanuclear [Dy7(OH)6(OMe)2(NO3)1.5(nacb)2(nacbH)6(MeOH)(H2O)2](NO3)1.5 (1) compound ~40% yield. Complex 1 unique hourglass-like metal topology, among all previously reported {Dy7} clusters, comprising two distorted {Dy4(μ3-OH)3(μ3-OMe)}8+ cubanes that share...

Self-assembled gold and silver nanoparticles were fabricated in medium vacuum conditions on Corning glass substrates by means of DC magnetron sputtering. The samples deposited either at 420 °C or 440 °C, they initially room temperature followed post annealing. Subsequently, covered with three different polymers, namely Polystyrene-block-polybutadiene-blockpolystyrene (PS-b-PBD-b-PS), Polystyrene-co-methyl methacrylate (PS-co-PMMA) Polystyreneblock-polyisoprene-block-polystyrene...

Self-assembled nanoparticles were formed after annealing ultrathin Ag films, which grown on glass and quartz by direct current magnetron sputtering, in a furnace air at 420 °C, 500 or 600 °C. Intense localized surface plasmon resonances observed for these samples the entire range of visible light spectrum depending time nanoparticle size. Prolonged resulted formation nanorings change position shape resonances. The nanoring is attributed to partial evaporation silver due trapping...

Plasmonic materials currently have a plethora of applications. How would dielectric matrix, such as diblock copolymers, tune plasmonic properties? In this work, self-assembled gold nanoparticles were fabricated in medium vacuum conditions on heated Corning glass substrates (kept at 440 °C) under the coexistence argon and air by means DC magnetron sputtering. These samples compared structurally optically to deposited room temperature post annealed. Subsequently, better two preparations, those...

Raman spectroscopy is employed to investigate the temperature dependence of E2g phonon mode single-layer, few-layer (FL), and bulk hexagonal boron nitride (hBN) sheets, situated over Si/SiO2 (90 nm). Depending on sample, two regimes are recorded. In low mid range examined temperatures, monolayer FL samples exhibit significantly higher slopes compared thicker ones because thermal expansion underlying substrate. high-temperature region, all show almost same slope, indicating slippage hBN...

Au‐Ni‐O thin films are produced by co‐deposition of Au and Ni in a simple sputter coater with base pressure 2.5 × 10 −2 mbar. The as‐deposited material is comprised mixture tiny grains crystalline gold, metallic hexagonal nickel oxide. Part the still amorphous. Post‐deposition annealing at 530 °C furnace air leads to formation nanocomposite NiO. plasmonic behavior evolution was studied time between 2 min 30 h an initial thickness 3 54 nm. Films up nm show broad localized surface plasmon...

AuxCu100−x, 4 ≤ x 12 at.%, solid solution nanocrystalline films with thickness between 1.5 and 100 nm were grown on Si(100) Corning glass substrates at room temperature by radio frequency magnetron sputtering. After post annealing 430 °C in a furnace air, phase separation occurred CuO Au. The Au nanoparticles showed intense localized surface plasmon resonances an amplitude increasing concentration. We show the evolution of these time correlate structure to optical properties. controllable...

Thin Cu films of thickness 0.4 – 150 nm were deposited via radio frequency magnetron sputtering on Si(100) wafers, corning glass and quartz. Subsequently the oxidized in ambient air at 230oC 425oC order to produce single-phase Cu2O CuO, respectively. Selected samples measured transmission geometry with help an ultraviolet visible spectrophotometer. From absorption spectra films, it was found that gap EB for dipole allowed transitions showed blue shifts about 1.2 eV thinnest film (0.75 nm),...

Nickel films are grown by radio frequency magnetron sputtering on Corning glass, polyimide foils and the native oxide of Si (100) wafers at low (1x10 -3 mbar) relatively high (2.5x10 - 2 Argon pressure 100 °C. The base vacuum chamber is 1x10 -7 mbar. X-ray diffraction experiments performed to reveal different texture various Ni films. Magneto-optical Kerr effect hysteresis loops magnetic force microscopy images show correlation between pressure, anisotropy results discussed with respect...

The present article examined the influence of size and periodicity simulated gold (Au) nanoparticles (NPs) embedded in Nickel Oxide (NiO) matrix on localized plasmonic resonances (LSPRs). scope this work is to comparatively study theoretical outcomes exhibited against experimental results delivered from previous works, including a significant number simulations testing numerous NPs diameter values. A comparison between Au NiO over silver (Ag) also reported investigate whether nature noble...

Ultrathin Ni films in the range of 1‐18 nm have been grown by direct current magnetron sputtering and successive oxidization at 600 � C a furnace ambient air. Structural characterization via X-ray diffraction revealed formation single-phase NiO. Ultraviolet-visible absorption spectroscopy was used to characterize optical properties films. A smooth blue shift band gap NiO is observed, as film thickness decreases. The maximum found be ∼280 meV for thinnest 1.7 nm. experimental spectra are...

Au-doped Cu thin films are produced by co-deposition of Au and via radiofrequency magnetron sputtering in a vacuum chamber with base pressure 1 × 10−7 mbar. After post annealing furnace air, one may obtain either Au-Cu2O or Au-CuO nanocomposite films. The presence does not have any considerable influence on the position optical band gap oxides. Only system shows well-formed localized surface plasmonic resonances Gaussian shape. We study systematically behavior nanocomposites as function gold...

The continuously growing demand for functional plasmonic devices or systems urges the implementation of economical and accelerated nanostructuring techniques. Laser annealing represents a promising approach to address this challenge, given its widespread usage in industry research, as well unique advantages. This study proposes scalable, rapid, versatile, cost-efficient method grow self-assembled nanostructures on metallic ultrathin films multilayers, with high precision patterning freedom....

We present a new cost-effective method to produce substoichiometric SiO2 thin films by means of simple sputter-coater operated at base pressure 1 x 10(-3) mbar. During sputtering air is introduced through fine valve so that the gas mixture air/Ar. High-resolution electron microscopy shows formation amorphous SiO(x) for as-deposited samples. The index approaches when ratio partial air/Ar tends 0.1. On other hand, pure silica formed 0.5. in state show intense green-yellow photoluminescence....

Abstract Magnetic materials are usually classified into a distinct category such as diamagnets, paramagnets or ferromagnets. The enormous progress in science allows one nowadays, however, to change the magnetic nature of an element material. Gold, bulk form, is traditionally diamagnet. But ferromagnetic environment, it can adopt induced moment. Moreover, growth gold under certain conditions may lead spontaneous paramagnetic response. Here, we report on highly disordered Au–Ni–O alloy and...