Introduction Nanocrystalline gamma-phase (γ) alumina is among many polytypes of alumina that find extensive applications as a catalyst and catalytic supports. The most useful properties these aluminas provide as catalyst supports are high surface area and welldefined porosity. These properties result primarily from the nano-scale crystalline character of the alumina. The problem is that both th...

Theoretical analysis and Computer simulations have proven to be cost-effective and powerful tools in scientific studies of materials, particularly at nano-scale where synthesis of nano-structures, interpretation of their observed character and exploration of new structures are not always straight forward. We present here fundamental principles of techniques used today for computational simulati...

Abstract This study investigated the separation of bovine serum albumin using a novel matrix mixed membrane composed poly vinyl pyrrolidone and (phenylene ether sulfone)/Nano-silver. The responsive bare modified PEES/Nano-silver membranes were evaluated morphology, wettability, XRD ATR-FTIR. molecular weight cut-off (MWCO), water content, mean pore radius, porosity, pure flux used to evaluate p...

Porous nano and micro crystalline tin oxide films were deposited by RF Magnetron Sputtering and doctor blade techniques, respectively. Electrical resistance and impedance spectroscopy measurements, as a function of temperature and atmosphere, were performed in order to determine the influence of the microstructure and working conditions over the electrical response of the sensors. The conductiv...

H nuclear magnetic resonance (NMR), supported by a measurement of the degree of hydration using X-ray diffraction, has been used to fully characterise the nano-scale porosity and composition of calcium-silicate-hydrate (C-S-H), the active component of cement. The resultant “solid” density and composition are 3 g/cm 68 . 2 = ρ ; (Ca)1.53. (Si0.96,Al0.04)O3.51.(H2O)1.92 for an underwater cured, n...

The innovative properties of the nano materials can have advantageous application in the restoration and conservation of the cultural heritage with relation to the tailoring of new products for protection and consolidation of stone. Their potential use in this field needs to be assessed taking into account specific requirements such as effectiveness, harmfulness and durability. This paper repor...

An atomic force microscope (AFM) and spectrometer combined system for in-situ thickness measurement of nano-porous alumina (PA) films is introduced. The AFM is applied to obtain the porosity of PA film, and then we calculate the effective refractive index by Maxwell-Garnett effective dielectric constant theory. The optical thickness of PA film is determined by reflective interference spectromet...

Electrochemical analysis allows in situ characterization of solid oxide electrochemical cells (SOCs) under operating conditions. However, the SOCs that have been analyzed in this way have ill-defined or uncommon microstructures in terms of porosity and tortuosity. Therefore, the nano-scale characterization of SOCs with respect to three-phase boundaries has been hindered. We introduce novel in s...

An opaque, white chitosan/ Hydroxyapatite nanocomposite was prepared by a simple blend method. Morphology, pore size and dispersion of nano-hydroxyapatite in chitosan matrix were visualized using SEM images. The FTIR with EDX analysis confirmed the bony apatite layer formed on outside composite. Porosity measurements water uptake studies evaluated which revealed maximum porosity 80% to 92% chit...

The use of nano materials, particularly copper is of interest, in areas like printed electronics and chemical engineering. Copper is highly conductive in nature and thin films on a substrate makes the structure more significant. Printing copper requires melting of macro size particles conventionally, whereas the viscous mixture of nano ink composition, utilizing spray mechanism in 3D printing f...