Fe/Si multilayers with antiferromagnetic interlayer coupling have been grown via ion-beam sputtering on both glass and single-crystal substrates. High-angle x-ray diffraction measurements show that both sets of films have narrow Fe peaks, implying a large crystallite size and crystalline iron silicide spacer layers. Low-angle x-ray diffraction measurements show that films grown on glass have ro...

A new type of multilayer coatings with narrowband reflection properties and peaked in the approximately 50- 92 nm spectral range has been developed. Multilayers are based on Yb, Al, and SiO films and they have been prepared by thermal evaporation. Efficient multilayers based on Yb and Al, with an SiO protective layer were prepared, but they developed a dendrite structure, which was attributed t...

Nmi multilayers are used as supermirrors for neutron guides. These multilayers are submitted to neutron irradiation. In order to determine the effect of irradiation on supermirrors performances we studied Ni/'Ti multilayers irradiated with thermal neutrons. We present here the results obtained by neutron reflectivity, X-ray diffraction and EXAFS on one sample. It has been found that the supermi...

UNLABELLED Si quantum dots (Si QDs)/SiC multilayers were fabricated by annealing hydrogenated amorphous Si/SiC multilayers prepared in a plasma-enhanced chemical vapor deposition system. The thickness of amorphous Si layer was designed to be 4 nm, and the thickness of amorphous SiC layer was kept at 2 nm. Transmission electron microscopy observation revealed the formation of Si QDs after 900°C ...

Understanding the factors that influence the structural, mechanical and electrical properties of hybrid metal–carbon multilayer materials and devices are explored in this study by examining the effects of the choice of metal, Cu or Ti, and the number of metal-carbon bilayers. With up to four bilayers, corresponding to ten discrete metal-carbon electrical junctions, lower interfacial stresses an...

Developmental constraints and trade-offs can limit diversity, but organisms have repeatedly evolved morphological innovations that overcome these limits by expanding the range and functionality of traits. Iridescent colours in birds are commonly produced by melanin-containing organelles (melanosomes) organized into nanostructured arrays within feather barbules. Variation in array type (e.g. mul...

The structural and magnetic properties of Cu//Co and Au//Co multilayers are studied by X-ray absorption spectroscopy. The results of EXAFS measurements show that thin cobalt layers in Cu /Co and Au /Co multilayers have a different structure imposed by the mismatch with Cu (2%) and Au (14%). The most interesting results for Cu/Co multilayers are provided by magnetic circular X-ray dichroism (MCX...

Magnetic and magneto-optic properties of sputtered Co/Ni multilayers" (1994). Roger Kirby Publications. Paper 17. We have investigated the magnetic and magneto-optic properties of Co/N multilayers deposited on Ag and Au buffer layers. The samples with Au buffer layers show perpendicular magnetic anisotropy, but those with Ag buffer layers do not. The. structure and degree of crystaIIine alignme...

Neuropathy target esterase (NTE) is a membrane protein found in human neurons and other cells, including lymphocytes. Binding of certain organophosphorus (OP) compounds to NTE is believed to cause OP-induced delayed neuropathy (OPIDN), a type of paralysis for which there is no effective treatment. Mutations in NTE have also been linked with serious neurological diseases, such as motor neuron di...