The deposition of dielectric materials on graphene is one the bottlenecks for unlocking potential in electronic applications. plasma enhanced atomic layer 10 nm thin high quality aluminum oxide (Al2O3) demonstrated using a monolayer hexagonal boron nitride (hBN) as protection layer. Raman spectroscopy performed to analyze possible structural changes lattice caused by deposition. results show th...

Periploca aphylla (PA), an interesting Saudi medicinal plant, is used in folk medicine to treat urticaria, cerebral fever, tumors, and swelling. To prove its use medicine, two different extracts from the aerial parts of plant: chloroform P-1, n-butanol P-2 were subjected biological assays screen peroxisome proliferator-activated receptors (PPAR? PPAR?) agnostic, anti-inflammatory, antioxidant, ...

Highly permeable zeolite membranes are desirable for fast gas separation in the industry. Reducing membrane's thickness is deemed to be an optimal solution permeability improvement. Herein, we report synthesis route of thin SSZ-13 via conversion template-contained surface gels. The gel fully crystallized into crack-free assisted with dual templates N,N,N-trimethyl-1-adamantammonium hydroxide (T...

Deposition process for thin insulator used in polysilicon gate dielectric of thin film transistors are optimized. Silane and N2O plasma are used to form SiO2 layers at temperatures below 150 ºC. The deposition conditions as well as system operating parameters such as pressure, temperature, gas flow ratios, total flow rate and plasma power are also studied and their effects are discussed.  The p...

Zinc oxide thin films have been obtained on bare and GaN buffer layer decorated Si (111) substrates by pulsed laser deposition (PLD), respectively. GaN buffer layer was achieved by a two-step method. The structure, surface morphology, composition, and optical properties of these thin films were investigated by X-ray diffraction, field emission scanning electron microscopy, infrared absorption s...

We present a review on the accuracy of asymptotic models for the scattering problem of electromagnetic waves in domains with thin layer. These models appear as first order approximations of the electromagnetic field. They are obtained thanks to a multiscale expansion of the exact solution with respect to the thickness of the thin layer, that makes possible to replace the thin layer by approxima...

There has been a tendency to discount thin-layer chromatography (TLC) in recent years because of the availability of high-performance liquid chromatography (HPLC) methods that appeared to offer greater versatility and ease of quantification, amongst other reasons. However, TLC has made a comeback, largely because of the high reproducibility and lower costs of commercial pre-coated plates. It is...