Plasmonic resonances in metallic nanoparticles have been used since antiquity to colour glasses. The use of metal nanostructures for surface colourization has attracted considerable interest following recent developments in plasmonics. However, current top-down colourization methods are not ideally suited to large-scale industrial applications. Here we use a bottom-up approach where picosecond ...

nowhere are the barriers to a functional health infrastructure more clearly on display than in the goma region of democratic republic of congo. kaboru et al. report poorly integrated services for hiv and tb in this war-torn region. priorities in conflict zones include provision of security, shelter, food, clean water and prevention of sexual violence. in goma, immediate health priorities includ...

INTRODUCTION The purpose of this study was to evaluate the morphologic surface of gutta-percha cones after cutting with different methods. MATERIALS AND METHODS The apical 3 millimeters of forty standardized, gutta-percha cones size 40 were cut off using scissors or a scalpel against a glass slab. The samples were then examined under scanning electron microscopy (SEM) for topographic deformit...

Nowadays there is an increased need to know the nanotribological properties of protective coatings used in part devices operating under nanoand micro-contact situations, e.g. hard disk drives, magnetic heads, micro-electromechanical systems (MEMS) and microsensors, etc. Therefore there is a demand for instruments and methods testing friction and wear at the nanoand micro-scales. In this work we...

The ocean and atmosphere exert stresses on sea ice that create elongated cracks leads which dominate the vertical exchange of energy, especially in cold seasons, despite covering only a small fraction surface. Motivated by need spatiotemporal analysis lead distribution, practical workflow was developed to classify high spatial resolution aerial images DMS (Digital Mapping System) along Laxon Li...

This paper demonstrates how a new shape from shading scheme can be used to extract topographic information from 2D intensity imagery. The shape-from-shading scheme has two novel ingredients. Firstly, it uses a geometric update procedure which allows the image irradiance equation to be satisfied as a hard-constraint. This not only improves the data-closeness of the recovered needle-map, but also...

In 1991 I described a particularly simple and elegant watershed algorithm, where the ooding a topographic surface was scheduled by a hierarchical queue. In 2004 the watershed line has been described as the skeleton by zone of in uence for the topographic distance. The same algorithm still applies. In 2012 I de ned a new distance based on a lexicographic ordering of the downstream paths leading ...