National Institute of Advanced Industrial Science and Technology

About: National Institute of Advanced Industrial Science and Technology is a government organization based out in Tsukuba, Ibaraki, Japan. It is known for research contribution in the topics: Catalysis & Thin film. The organization has 22114 authors who have published 65856 publications receiving 1669827 citations. The organization is also known as: Sangyō Gijutsu Sōgō Kenkyū-sho.

Symmetry of charge order in cuprates

Abstract: Charge-modulated states are investigated through resonant X-ray scattering in two cuprate families. This work provides insights on the origin and the microscopic description of charge order, and on its interplay with superconductivity.

The sarcolemmal proteins dysferlin and caveolin-3 interact in skeletal muscle

Abstract: Dysferlin is a surface membrane protein in skeletal muscle whose deficiency causes distal and proximal, recessively inherited, forms of muscular dystrophy designated Miyoshi myopathy (MM) and limb girdle muscular dystrophy type 2B (LGMD2B), respectively. The function of dysferlin is not defined. Caveolin-3 is another skeletal muscle membrane protein which is important in the formation of caveolae and whose mutations cause dominantly inherited limb girdle muscular dystrophy type 1C (LGMD1C). We report that dysferlin co-immunoprecipitates with caveolin-3 from biopsied normal human skeletal muscles. We also describe abnormal localization of dysferlin in muscles from patients with LGMD1C including novel missense mutation (T64P) in the human caveolin-3 gene (CAV3). The immunoprecipitation data are consistent with the parallel observation that dysferlin immunostaining is not normal in LGMD1C muscles. Amino acid sequence analysis of the dysferlin protein reveals seven sites that correspond to caveolin-3 scaffold-binding motifs, and one site that is a potential target to bind the WW domain of the caveolin-3 protein. This is the first description of a possible dysferlin interacting protein; it suggests the hypothesis that one function of dysferlin may be to interact with caveolin-3 to subserve signaling functions of caveolae.

Investigation of a MEMS piezoelectric energy harvester system with a frequency-widened-bandwidth mechanism introduced by mechanical stoppers

Abstract: This paper presents the design, microfabrication, modeling and characterization of a piezoelectric energy harvester (PEH) system with a wide operating bandwidth introduced by mechanical stoppers. The wideband frequency responses of the PEH system with stoppers on one side and two sides are investigated thoroughly. The experimental results show that the operating bandwidth is broadened to 18?Hz (30?48?Hz) and the corresponding optimal power ranges from 34 to 100?nW at the base acceleration of 0.6g and under top-?and bottom-stopper distances of 0.75?mm and 1.1?mm, respectively. By adjusting the mechanical stopper distance, the output power and frequency bandwidth can be optimized accordingly.

Spin-polarized resonant tunneling in magnetic tunnel junctions.

Abstract: Insertion of a thin nonmagnetic copper Cu(001) layer between the tunnel barrier and the ferromagnetic electrode of a magnetic tunnel junction is shown to result in the oscillation of the tunnel magnetoresistance as a function of the Cu layer thickness. The effect is interpreted in terms of the formation of spin-polarized resonant tunneling. The amplitude of the oscillation is so large that even the sign of the tunnel magnetoresistance alternates. The oscillation period depends on the applied bias voltage, reflecting the energy band structure of Cu. The results are encouraging for the development of spin-dependent resonant tunneling devices.