Nano-scale patterns were produced with UV-curable acrylated hyperbranched polymer nanocomposites using nanoimprint lithography with a glass master in a rapid, low-pressure process. The pattern of the glass master was replicated with composites containing up to 25 vol% SiO2 with a shape fidelity better than 98%. Photo-rheology, interferometry and atomic force microscopy were used to analyze them...

ZnO/SiO2 was prepared using sol-gel method, and vanadium particles were loaded on this nano-photocatalyst by wet incipient method. They characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive (EDX) analysis andFouriertransform infrared spectroscopy (FT-IR). The XRD patterns showed that the zinc oxide samples have a wurtzite structure and vanadium dope...

Dimensional measurements on nano-objects by atomic force microscopy (AFM) require samples of safely fixed and well individualized particles with a suitable surface-specific particle number on flat and clean substrates. Several known and proven particle preparation methods, i.e., membrane filtration, drying, rinsing, dip coating as well as electrostatic and thermal precipitation, were performed ...

The present study examines the effect of silicon dioxide (SiO2) nano-additives on performance and emission characteristics a diesel engine fuelled with soybean biodiesel. Soybean biofuel was prepared using transesterification process. morphology studied scanning electron microscopy (SEM), X-ray diffraction (XRD) energy-dispersive spectroscopy (EDS). Ultrasonication process used for homogeneous ...

Mn and Fe BPMEN complexes showed excellent reactivity in catalytic oxidation with an excess of co-reagent (CH3COOH). In the straight line a cleaner system, volatile acetic acid was replaced by SiO2 (nano)particles two different sizes to which pending carboxylic functions were added (SiO2@COOH). The SiO2@COOH beads obtained functionalization nitrile (SiO2@CN) followed CN hydrolysis. All silica c...

The present work determined the influence of superhydrophobic nano-SiO2 on hydraulic conductivity and pore size distribution expansive soil, analysed mechanism modification between soil from a microscopic view. Superhydrophobic was added to as modifier. Our samples were two types, i.e., unmodified (without nano-SiO2) modified (with 0.2%, 0.4%, 0.6%, 0.8%, 1.0% by weight parent soil). decreased ...

This research studies the influence of using SiO2 nano-particles 50nm in a Vapor Compression Refrigeration System (VCRS), along with Poly-alkylene Glycol (PAG) oil and R-134a mixed to create nano-refrigerant. In this work, were performed three different concentrations (0.1%, 0.3%, 0.5%) 200ml PAG oil. AVCR system was built at mechanical engineering department laboratory Al-Qadisiyah University ...

in this work, a novel hg2+ sensitive fluorescent chemosensor is constructed. the proposednano-chemosensor was prepared through the preparation of 3-(benzo[d]thiazol-2-yl)-7-hydroxy-2h-chromen-2-one functionalized silica nanoparticles which has high magnetization properties (btc-fe3o4@sio2). theûnal product was characterized by fourier transform infrared spectroscopy (ft-ir), thermal gravimetric...

Nano-materials have been widely accepted for many purposes as improvement materials several engineering projects. In this research, an attempt was made to study the effect of using two types Nano-materials, namely: Nano-SiO2 and Nano-clay, investigate mechanical properties soil improved with aid permeation grouting technique. Three different ratios Nano-materials/ water (1/30, 1/50, 1/100) were...