The optical constants, bandgaps, and band alignments of mono-, bi-, trilayer WS2 were experimentally measured, an extraordinarily high dependency on the number layers was revealed. refractive indices extinction coefficients extracted from optical-contrast oscillation for various thicknesses SiO2 a Si substrate. bandgaps few-layer both optically electrically indicating exciton-binding energies. Schottky-barrier heights (SBHs) with Au/Cr contact also extracted, depending (1–28). From...

The results of a study on the effects aluminum (Al), silicon (Si), and gadolinium (Gd) dopants controlling crystal phases hafnium (Hf) zirconium (Zr) oxide thin films using soft X‐ray absorption spectroscopy (XAS) are presented. Al Si increase orthorhombic phase content in HfO 2 , which is favorable for ferroelectric properties, while Gd advantageous tetragonal ZrO formation beneficial high dielectric constant properties. near‐edge analysis O K‐edge Zr L 2,3 ‐edge used to identify changes...

Development of biopolymer-based imaging agents which can access rapidly and provide detailed information about the diseases has received much attention as an alternative to conventional agents. However, development nanomaterials for tumor still remains challenging due their low sensitivity image resolution. To surmount these limitations, multimodal have been developed, they were widely utilized theranostic applications. Herein, iodine containing echogenic glycol chitosan nanoparticles are...

Alzheimer's disease is a progressive neurodegenerative disorder that characterized by the deposition of beta-amyloid (Abeta) peptide and formation neurofibrillary tangles in neurons. The Abeta key molecule pathogenesis an important marker for early diagnosis. Surface-enhanced Raman scattering (SERS) has recently been attracting keen interest various fields such as biosensors or immunoassays. In this study, gold nanoparticles (Au NPs) were electrochemically deposited on indium tin oxide (ITO)...

Aluminum-doped zinc oxide films produced by atomic layer deposition were investigated for use as anodes in organic light emitting diode (OLED) devices. Al-doped ZnO (AZO) (∼200 nm thick) deposited at temperatures of 200, 230, and 260 °C the AZO film demonstrated carrier mobility, concentration, resistivity, transmittance values 16.2 cm2 V−1 s−1, 5.18 × 1020 cm−3, 7.34 10−4 Ω cm, 90%, respectively. OLED devices with a DNTPD/TAPC/Bebq2:10% doped RP-411/Bphen/LiF/Al structure on glass substrate...

Facile synthesis and size control of Ag nanoparticles by a photochemical reduction was demonstrated. UV–visible spectra photographs the synthesized solutions with without sodium citrate at different UV exposure times showed that played crucial role for growth nanoparticles. According to colloidal 0.250 mM 0, 7, 15, 30, 60 min, average particle sizes were 2.45, 5.58, 7.03, 11.08 nm, respectively. exhibited great increase in sizes, from 5.71 36.43 nm after as concentration increased 0.125...

Abstract The free radical copolymerization of vinyl imidazole (VI) with γ‐methacryloxypropyltrimethoxy silane (γ‐MPS) by using azobisisobutyronitrile (AIBN) as an initiator was carried out in benzene at 68°C. copolymer compositions various monomer feeds were investigated elemental analysis. reactivity ratios two monomers determined the Finemann‐Ross method: r 1 = 0.22, 2 3.18. From these results, it could be concluded that silane‐modified polyvinylimidazoles random copolymers (0< <1)....

Ag nanoparticles (NPs) and/or graphene were incorporated into a zinc oxide (ZnO) photosensitive precursor solution. Then, direct-patternable ZnO nanocomposite thin films fabricated via photochemical metal-organic deposition. The transmittance and crystallinity of not almost changed but the resistivity was decreased by after incorporation NPs graphene. Especially double (Ag graphene) led to greater decrease in more than single or graphene). This difference resistivities due combined...

The optical and electrical properties of ZnO films incorporating 0.25 at. % Pt nanoparticles were studied. synthesized by a methanol reduction method their size was controlled to 3 nm on average using poly(N-vinyl-2-pyrrolidon) as protecting agent. conduction the enhanced introduction without degradation transmittance. Well-defined 60-µm-wide direct-patterned containing formed photosensitive ortho-nitrobenzaldehyde stabilizer contribute formation crosslinked network structure during...

A clothing‐shaped substrate that matches the characteristics of a fabric was designed to minimize physical strain and stress on organic light‐emitting diodes(OLEDs).The room temperature process minimized deformation during fabrication process, having same surface as flat glass fabricated. Finally, OLED provide excellent wearing comfort such clothes proposed, flexibility, bending wrinkling were evaluated.

Polyvinylimidazoles (PVIs) modified with vinyltrimethoxysilane (VTS) and y-methacryloxypropyltrimethoxysilane (γ-MPS) in different mole fractions were used as adhesion promoters (primers) for the polyimide (PI)/copper interface. The effects of compositions silane-modified PVI copolymers on lap shear strength between PI copper investigated at bonding temperatures. Contact angle measurements scanning electron microscopic (SEM) analysis performed to characterize interfacial phenomena primer,...

Abstract The electrical property of direct‐patternable SnO 2 thin film was improved by the incorporation graphene. Graphene were incorporated into photosensitive solution and prepared photochemical deposition. graphene films slightly reduced transmittance due to light scattering In addition, with graphene, crystallinity decreased resistivity an enhancement mobility because π‐bond nature surface on Direct‐patterning performed without photoresist or etching process. These results suggest that...

The thermooxidative degradation and SiOx film-formation mechanism of poly(vinylimidazole-co-vinyltrimethoxysilane) [poly(VI-co-VTS)] on copper was investigated with Fourier transform infrared reflection absorption spectroscopy (FTIR-RAS). spectral differences the copolymers different coating thicknesses were compared. Thermal copolymer catalyzed by in film as well surface. This catalytic effect observed regardless thickness. Copper participated Cu-containing formation during thermal...

In this study, we characterized the optical and electric properties of direct-patternable SnO2 films with embedded Ag nanorods/nanowires prepared by photochemical metal-organic deposition using photosensitive precursors. showed a random orientation growth independent on presence annealing temperature. The values for sheet resistance average transmittance without after at 600°C were 6 kΩ/square 82.2%, 418 87.2%, respectively. Due to incorporation into films, was remarkably improved, but...

Vinyl imidazole (VI) was copolymerized with four silane coupling agents, allyl trimethoxysilane (ATS), γ-methacryloxypropyl (MPS), 3(N-styrylmethoxyl-2-amino-ethylamino)propyltrimethoxysilane hydrochloride (STS), and vinyl (VTS), in benzene at 68°C using azobisisobutyronitrile (AIBN) as an initiator. Fourier transform infrared reflection absorption spectroscopy (FTIR-RAS) scanning electron microscopy (SEM) were applied to the study of corrosion protection on copper by various silane-modified...

In order to promote the interfacial adhesion strength between polyimide (PI) and copper, copper surface was treated with polyvinylimidazole (PVI) or silane-modified PVIs. They were prepared by copolymerization of 1-vinylimidazole (VI) following silane coupling agents: 3-(N-styrylmethyl-2-amino-ethylamino)propyltrimethoxysilane (STS), vinyltrimethoxy (VTS), allyltrimethoxy (ATS), γ-methacryloxypropyltrimethoxysilane (γ-MPS). The mole ratio agent VI fixed at 1 : 1. lap shear strengths PI...