Marcasite surfaces were analyzed using X-ray photoelectron spectroscopy (XPS) and auger electron spectroscopy (AES). XPS data of a pristine marcasite surface are used as a template to examine the characteristics of a marcasite surface after exposure to vigorous cleaning procedures and after reaction in oxygenated and mildly acidic (pH 3.0) solution. Minor changes are observed to the Fe(2p3/2) s...

ozone modification method and air-oxidation were used for the surface treatment of polyacrylonitrile(pan)-based carbon fiber. the surface characteristics of carbon fibers were characterized by x-ray photoelectron spectroscopy (xps). the interfacial properties of carbon fiber reinforced polyamide 6 (cf/pa6) composites were investigated by means of the single fiber pull-out tests. as a result, it...

La1-xSrxAlO3 (x=0 to 0.4) perovskite materials were synthesized by the reverse strike co-precipitation method and their soot oxidation activity was evaluated. All the catalysts synthesized were characterized using XRD, BET specific surface area, FESEM and XPS techniques. As analyzed by XRD, La1-xSrxAlO3 <...

The possibility of a new technique for fabricating nanoparticles from thin films using selective oxidation in an atmosphere mixture of water vapor and hydrogen was investigated. Fe-5wt.%Al films were RF-sputtered and annealed in the atmosphere mixture at 900°C for up to 200 min, in order to oxidize aluminum selectively. Thermodynamics simulation showed that temperatures exceeding 800°C are nece...

Surface initiated atom transfer radical polymerization (SI-ATRP) is one of the most versatile technique to modify the surface properties of material. Recent developed metal free SIATRP makes such technique more widely applicable. Herein photo-induced metal-free SI-ATRP of methacrylates, such as methyl methacrylate, N-isopropanyl acrylamide, and N,Ndimethylaminoethyl methacrylate, on the surface...

Peak fitting of x-ray photoelectron spectroscopy (XPS) data is the primary method for identifying and quantifying chemical states atoms near surface a sample. typically based on minimization figure-of-merit, such as residual standard deviation (RSD). Here, we show that optimal XPS peak obtained when shape (the synthetic mathematical function represents material) best matches physics chemistry u...

Diamond-like carbon (DLC) films have been successfully deposited on Ti-50.8 at.%Ni using plasma based ion implantation (PBII) technique. The influences of the pulsed negative bias voltage applied to the substrate from 12 kV to 40 kV on the structure, nano-indentation hardness and Young’s modulus are investigated by the X-ray photoelectron spectroscopy (XPS) and nano-indentation technique. The r...

Highly energetic thermite compounds have potential applications in combustion synthesis of various materials and processes, but they are hard to ignite by conventional means. A new technique for ignition of pure thermite powder in air atmosphere, using localized microwaves, was demonstrated recently. This exothermic zero-oxygen-balanced reaction may occur underwater, but due to the hydrophobic ...

The reduction of surface “native” oxides from GaAs substrates following reactions with trimethylaluminum TMA precursor is studied using medium energy ion scattering spectroscopy MEIS and x-ray photoelectron spectroscopy XPS . MEIS measurements after one single TMA pulse show that 65% of the native oxide is reduced, confirmed by XPS measurement, and a 5 Å thick oxygen-rich aluminum oxide layer i...