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We report a novel surface-micromachined micro-optical bench (MOB) technology which enables us to monolithically integrate "flipped-up" free-space optical elements with micro-positioners and micro-actuators. This technology allows complete optical systems be implemented on a single Si chip using IC-like microfabrication processes. We have, for the first(More)
We report on a novel, compact twodimensional (2D) scanning micromirror for free space optical crosslinks for micro and nano satellites. Using a novel micromachined structure called MicroElevator by Self-Assembly (MESA) [1], the micromirror is suspended above the substrate by several hundred micrometers. Large mirror size and wide scanning range are achieved(More)
Free-space micro-optical systems on a chip containing three-dimensional microgratings have been demonstrated using surface-micromachining technique. The micrograting is integrated with a rotary stage, a collimating micro-Fresnel lens, and an edge-emitting laser held by three-dimensional alignment structures on a single Si substrate. Diffraction patterns for(More)
The paper reports the methods of preparing molecular magnets and pattering of the molecules on semiconductor surface. A highly magnetically aligned metallothionein containing Mn and Cd (Mn, Cd-MT-2) was first synthesized. Those molecules were then placed into nanopores prepared on silicon
The paper reports the methods of preparing molecular magnets and patterning of the molecules on a semiconductor surface. A highly magnetically aligned metallothionein containing Mn and Cd (Mn,Cd-MT-2) is first synthesized, and the molecules are then placed into nanopores prepared on silicon (001) surfaces using electron beam lithography and reactive(More)
Naturally occurring metallothionein (MT) is a metal binding protein, which binds to seven Zn2+ through 20 conserved cysteines and forms two metal binding clusters with a Zinc-Blende structure. We demonstrate that the MT, when substituting the Zn2+ ions by Mn2+ and Cd2+, exhibits magnetic hysteresis loop observable by SQUID from 10 to 330 K. The magnetic(More)
We prepared giant magnetoresistance samples comprising of pseudo spin valve structures and measured the current-perpendicular-to-plane magnetoresistance (MR) with applied magnetic field along the easy and hard axes of the samples. When the magnetic field was applied along the easy axis, high and low resistance states representing magnetization parallel and(More)
Magnetization dynamic of exchange bias IrMn/NiFe bilayers system were investigated. Samples with fixed ferromagnetic (FM) layer thickness of 25 nm and antiferromagnetic (AFM) layer thickness t<sub>AFM</sub> of 5, 10, 15 and 20 nm were deposited by dc-magnetron sputtering on buffered silicon substrates. The static exchange bias field extracted from the(More)
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