Al2O3 + 30 vol% ZrO2 matrix composites with 20 and cBN have been prepared the optimized processing route, using spark plasma sintering (SPS) at temperatures of 1400 °C 1250 °C. The influence addition on microstructure characteristics, micro/nanohardness, elastic modulus, crack-extension resistance their constitutions investigated scanning electron microscopy (SEM), statistical analyses individu...

Hydroxyapatite (HA)ynano-zirconia composite coatings were successfully produced through high velocity oxy-fuel (HVOF) spraying of radio frequency (RF) plasma synthesized powders. Microstructure characterization and morphology analysis on the nano-structured coatings were conducted using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), and d...

Nanoparticles (NPs) which enter physiological fluids are rapidly coated by proteins, forming a so-called corona which may strongly modify their interaction with tissues and cells relative to the bare NPs. In this work the interactions between a living cell and a nano-object, and in particular the effect on this of the adsorption of serum proteins, are directly examined by measuring the forces a...

BACKGROUND The aim of this study was to compare the effects of conventional acid etching and laser etching on the nano-mechanical properties of the dental enamel using nano-indentation test. MATERIALS AND METHODS In this experimental in vitro study, buccal surfaces of 10 premolars were divided into three regions. One of the regions was etched with 37% phosphoric acid and another etched with E...

Pictures and movies of modern large scale molecular simulations can be downloaded from the course web site http://micro.stanford.edu/∼me346 (click “Course Materials”). Examples include plastic deformation in metals containing a crack, phase transformation induced by shock waves, nano-indentation of metal film, laser ablation on metal surface, etc. In each of these examples, molecular simulation...

The controlled removal of material conducted with the tip of an atomic force microscope (AFM) probe is a technique that has started gaining increased attention in recent years within the micro and nano manufacturing research community. The attractive characteristics of this process are that it is relatively simple to implement and low-cost compared with vacuum-based lithography techniques for m...