This note considers variations on the theme of a solenoid magnet (i.e., a magnet whose field has axial symmetry) as a lens for charged particles. A related problem has been posed in [1]. Recall that if a device is to be a lens with optic axis along the z axis in a cylindrical coordinate system (r, φ, z), then as particles leave the device they must have no azimuthal momentum, Pφ = 0, and their ...

Haptic interface serves as an ideal context and platform for teaching both system dynamics and embedded control. At The University of Michigan, a traditional undergraduate mechanical engineering course in systems dynamics and a new undergraduate electrical engineering course in embedded control systems have been equipped with instructional modules based on two new single-axis haptic interface d...

Due to their small size, low weight, low cost and low energy consumption, MEMS (Microelectromechanical Systems) devices have achieved great commercial success in recent decades. MEMS accelerometers have been widely used in automobile airbag deployment systems, inertial navigations, etc. In this paper, the design and simulation of a novel bulk-micromachined capacitive MEMS dual axis acceleromete...

Recently, uniaxial negative thermal expansion (NTE) has been observed in transition-metal zirconides including tetragonal (CuAl2-type) CoZr2 and orthorhombic (Re3B-type) CoZr3. Here, we report the observation of NTE (V3S-type) IrZr3. With increasing temperature, lattice parameter for a-axis volume IrZr3 increase, but c-axis decreases. is a superconductor with transition temperature 2.3 K. The p...

Optical Fabry-Perot interferometer sensors based on inner air-cavity is featured with compact size, good robustness and high strain sensitivity, especially when an ultra-thin air-cavity is adopted. The typical shape of Fabry-Perot inner air-cavity with reflection mode of operation is elliptic, with minor axis along with and major axis perpendicular to the fiber length. The first reflection surf...

Abstract Herein we report the manipulation of perpendicular magnetic anisotropy (PMA), a very important technique for spintronics devices, which is achieved in an all-solid-state redox (reduction/oxidation) device. The device consisted NiCo 2 O 4 (NCO) thin film with c -axis orientation and proton-conducting polymer (Nafion). PMA NCO can be manipulated situ low voltage ( V ? 0.7 V) due to utili...