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Mutations in the gene encoding Cu-Zn superoxide dismutase (SOD1) are one of the causes of familial amyotrophic lateral sclerosis (FALS). Fibrillar inclusions containing SOD1 and SOD1 inclusions that bind the amyloid-specific dye thioflavin S have been found in neurons of transgenic mice expressing mutant SOD1. Therefore, the formation of amyloid fibrils(More)
Introduction Metal oxide materials have been the topic of intense scrutiny in recent years because of their intriguing properties such as high temperature (High-Tc) superconductivity and colossal magneto resistance (CMR). While it is established that the transport properties of thin films of these materials are strongly affected by the internal stress(More)
This article reports the effects of heating temperature and composition of nanoparticle multilayer films on the morphology, stability, and optical property of gold nanoisland films prepared by nanoparticle self-assembly/heating method. First, nanoparticle-polymer multilayer films are prepared by the layer-by-layer assembly. Nanoparticle multilayer films are(More)
1 Doped manganites, such as La 0.66 Ba 0.33 Mn0 3 , have recently evoked great interest because they exhibit a giant magnetoresistance [1]. It is also clear that the electronic transport in these materials is strongly influenced by the spin ordering consequent upon the transition to the ferromagnetic state. Thus, it is of fundamental interest [2] to(More)
This article introduces a facile nanoparticle self-assembly/annealing method for the preparation of nanoisland films. First, nanoparticle-polymer multilayer films are prepared with layer-by-layer assembly. Nanoparticle multilayer films are then annealed at ~ 500 C in air to evaporate organic matters from the films. During the annealing process, the(More)
We have studied the activation energy of thermally activated vortex motion using (Pr/sub 0.6/Y/sub 0.4/)Ba/sub 2/Cu/sub 3/O/sub 7//YBa/sub 2/Cu/sub 3/O/sub 7//(Pr/sub 0.6/Y/sub 0.4/)Ba /sub 2/Cu/sub 3/O/sub 7/ trilayer structures. The dependence of the activation energy on the thickness of the YBa/sub 2/Cu/sub 3/O/sub 7/ layer and magnetic field was studied(More)
We have investigated buffer layers of Pr/sub 0.55/Y/sub 0.45/Ba/sub 2/Cu/sub 3/O/sub 7-/spl delta// (PY)BCO for YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO)/SrTiO/sub 3/ field effect devices. The transitions of single unit cell thick YBCO films in (PY)BCO/YBCO/(PY)BCO trilayers depend strongly on the buffer layer thickness, with optimum T/sub c//spl ap/40(More)
This article reports the preparation of gold plasmonic transducers using a nanoparticle self-assembly/heating method and the characterization of the films using scattering-type scanning near-field optical microscopy (s-SNOM). Nanoparticle-polymer multilayer films were prepared by the layer-by-layer assembly on glass slides by alternating exposures to(More)
Materials issues relevant to the growth of high-quality YBa/sub 2/Cu/sub 3/O/sub 7-x//SrTiO/sub 3/ (YBCO/STO) bilayers for use in superconducting field-effect devices were studied. Different substrate materials and growth conditions were investigated. NdGaO/sub 3/ was determined to be the most promising substrate material due to its low surface roughness(More)
Inductive measurements were performed on YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO) films and superconducting/normal metal bilayers using Au, PrBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// and (Y/sub 0.4/Pr/sub 0.6/)Ba/sub 2/Cu/sub 3/O/sub 7-/spl delta// as normal material in order to investigate their screening properties between T/sub c/ and 2.2 K. YBCO(More)
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