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We have successfully demonstrated a single-crystal field-effect transistors (FETs) based on an asymmetric perylenetetracarboxylic diimide (a-PDI) compound with polystyrene (PS)/SiO2 bilayer as gate dielectric. The single crystals are in-situ grown on substrate from simple solution evaporation method, thus may be suitable for large area electronics applications. The PS modified gate dielectric could minimize charge trapping by the hydroxyl groups of the SiO2 surface. The resulting solution processed single crystals transistors are characterized in ambient air, and exhibited maximum electron mobility of ca. 1.2 cm2 V−1 s−1 and high Ion:Ioff > 105.

This paper realizes a SoPC system which balances an electric unicycle based on image data from a CMOS camera. Generally, tilt-meters and gyros have commonly been chosen to measure the tilt angle and angle rate of a unicycle. In this paper, a CMOS camera is employed as the tilt angle measurement sensor instead. Through simple image processing techniques, a hardware circuit module for inclination measurement for the unicycle is implemented on the FPGA of a SoPC. By the concept of software hardware co-design, the inclination measurement module is integrated with the double-PD control method on the SoPC to balance the unicycle. Simulation and experimental results confirm that the resulting system meets the design goal.

This article focuses on how to use simple image processing techniques to realize a dynamic object detecting and tracking surveillance system on a SoPC. We try to mount a camera on a two-dimensional rotation machinery so as to dynamically search the environment by controlling the rotation of this machinery. In detection mode, the system rotates the machinery along a predefined path to capture images with fixed time interval and compare the images with their corresponding previously recorded reference images for determining if any intrusion objects appear. Once an intrusion object is detected, the system switches to tracking mode. In tracking mode, successive images are compared to find the most possible area in the image where the object locates. The color which occupies biggest region in this possible area in the image is finally recognized as the feature of the intrusion object. The resulting system has functions including intrusion detecting, object tracking, warning message sending, and internet remote watching and all these functions have been experimentally proven that they works well on the SoPC system simultaneously.

In-line sputtered aluminum doped zinc oxide (AZO) films with different substrate temperature have been made. Anisotropic stress of AZO films produced during in-line sputtering was proposed before. This work reports more special phenomena observed from in-line sputtered AZO films attributed to anisotropic stress effect. Three different types of AZO films' surface morphology: a. rounded grain and nearly uniform grain size, b. rounded grain and apparently non-uniform grain size and c. polygonal grain processed with increasing substrate temperature were observed. Usual reported morphology change of AZO films with increasing substrate temperature is rounded grain and uniform grain size growth. Asymmetry judgment of X-ray diffraction zinc oxide (002) peak shape was proposed by checking right part divided by left part of full width at half maximum. Asymmetry of measured X-ray diffraction peak shape was found corresponding to zinc oxide (002) crystal plane. Special AZO films' phenomena of surface morphology and the asymmetry of measured X-ray diffraction peak shape give more hints on anisotropic stress during in-line sputtering process. This work contributes to industries like thin films solar cells, touch panel, light emitting diodes if AZO films were considered to be used as transparent electrodes.