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We investigate aluminum nanopatch/nanohole arrays surrounded by a dielectric material on plastic substrates for large area color printing. In this specific arrangement, metallic nanopatches have a smaller size than that of the nanoholes, lying distantly above their complementary nanoholes. Simulation results show that the coloring in reflection as well as in transmission can be tuned greatly by the...
The aggressive shrinking of process geometry and an increase in the number of bits stored in each memory cell of NAND flash memory inevitably degrade the reliability of NAND flash. Redundancy methods have been widely adopted to enhance the reliability of the system data in NAND flash memory. However, the redundancy process will induce extra program operations which will sharply degrade the I/O performance...
An intelligent ultrasonic cell disruption system with the function of frequency tracking is presented in this paper. The system is mainly composed of power supply module, frequency generator module, power amplification module and phase difference detection module. The power supply module transforms AC220V from grid into the desired power supply of the system. The frequency generator module generates...
A bare hand gesture recognition system using only a single color camera without any marker is presented in this paper. The system is mainly composed of image pre-processing, skin segmentation, feature extraction and gesture classification. The image pre-processing module transforms the raw image into the desirable feature vector which mainly includes converting the color images into the hue images...
A two-dimensional grating for the flexible solar cells is proposed. The transmission characteristics of the microstructure were investigated with rigorous coupled-wave analysis and the results indicate that almost 100% optical absorption could be achieved with the optimized gratings.
In this paper, we present work on the design, fabrication, readout technique and vacuum packaging of z-axis gyroscopes. A vacuum package that houses the gyroscope and its control electronics has bee built and tested. The entire gyroscope package including control electronics is approximately phi42 times 24mm in dimensions. This vacuum packaged gyroscope has a scale factor of 19.8mV/deg/sec with a...
The Micro Electrics Mechanics System (MEMS) gyroscope has the virtue of lower price, smaller size, lighter weight than of the traditional rate sensors. It can be widely used in the low-price inertial navigation system. But limited by its machining precision, the MEMS gyroscope usually has the large drift. Using the digital signal procession (DSP) of drift signal, the performance of the MEMS gyroscope...
This paper presents the design, simulation, fabrication and preliminary test results of a monolithic triaxial micromachined vibratory gyroscope. The device is a monolithic integration of two uniaxial in-plane (x- and y-axis) gyroscopes and one uniaxial out-of-plane (z-axis) gyroscope and the three individual gyroscopes are all actuated by electrostatic force and detected by capacitors. In order to...
Canceling and minimizing quadrature error is the key to improve the performance of MEMS gyroscopes. This paper addresses how to design suspension springs to decrease the quadrature error which induced with manufacture asymmetric. According to the stiffness matrix of suspension spring, the relationship among quadrature error, terms of stiffness matrix and width mismatch was put forward. The off-diagonal...
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