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A patent-pending 16 channel adaptive antenna based on active frequency selective surface is proposed. A Zigbee system built with this antenna is realized and tested in the real world. And serial experiments are taken. The results show that this antenna has a better performance than a pair of dipoles. At some places, this antenna can offer a stable link when the dipoles based system loses many packages...
This paper presents a highly compact fibre-optic system based on light intensity modulation for multi-segment flex sensing in pliable robot arms, e.g., articulated surgical instruments. This fibre-optic arrangement is 7.5 mm in diameter and is comprised of a two-segment flexible and stretchable Steiner chain arm section with twelve housings at the distal side which accommodates passive cables. The...
Ground Penetrating Radar (GPR) has widely been accepted in geoengineering, and recently, many successful applications are reported in archaeological survey. After the East Japan great earthquake and tsunami 2011 which killed more than 15,000 and many houses must be relocated from seashore to inland, and we have many demands of archaeological surveys. In order to solve this problem, we have developed...
This study mainly used Electrospraying and Taguchi method to investigate the optimum process of piezoelectric Zinc oxide (ZnO) nanorods parameters. Zinc oxide seed layer was electrosprayed on Au/Chromium/Silicon substrates. The electric field is around 660 V/mm. In this study, ZnO was made in an array to characterize. We used X-ray diffraction (XRD), photoluminescence (PL) and field emission scanning...
We show a 90nm nanocrystal-based split gate embedded flash memory that is able to meet the speed, endurance and reliability requirements for 32-bit microcontroller products. A 3.4V operating window is achievable and the process is robust and repeatable across many lots. Erase after 10k cycles can be achieved in 5ms, long-term data retention of cycled arrays is not susceptible to SILC-induced charge...
A variety of cell performances, such as program speed, second-bit effect, program disturbance along the channel direction (X-disturbance), and random telegraph noise (RTN), are investigated extensively under different junction dosages in a virtual-ground charge-trap nor array of 45-nm technology. Junction profiles and the location of programmed charges are compared by means of a gate-induced drain...
Recently, a new concept of rotation scanning synthetic aperture interferometric radiometer (RS-SAIR) has been receiving more and more attentions for its advantage of much simpler configuration with looser requirements of antenna elements. In this article, we investigate the imaging theory of RS-SAIR, and introduce the pseudo-polar FFT algorithm to deal with the polar u-v samples. It only involves...
Applying synthetic aperture interferometric radiometer (SAIR) in near field imaging has been receiving great interest in the recent years. Because the traditional far-field Fourier imaging theory is not valid in near-field condition, developing the proper near-field imaging techniques is the major desirable objective of near field SAIR applications. This work is devoted to establish an effective near...
Study on using a process which was combined LIGA (Lithographie Galvanoformung Abformung) with etching to manufacture an optical film of an aspherical microlens array (A-MLA), which can improve the extraction efficiency of an OLED (Organic Light-Emitting Diode). The extraction efficiency of a current OLED is not high due to its total internal reflection, and the luminance is also lower because of the...
Self-aligned shallow trench isolation recess effect on 42 nm node NAND flash to achieve high performance and good reliability has been studied and demonstrated. As cell STI recess is increased by 23 nm, 29% narrower cell Vth distribution width and 54% less cell Vth shift after 125°C, 2 hours can be obtained. Furthermore, the endurance window is obviously improved ~0.5V as the distance of the active...
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