Advanced Materials Research Vol. 705

Abstract: In this work, CMOS compatible MEMs based bolometer process was developed on 200mm std CMOS Cu BEOL. As to the micro-bridge structure, TaN was used as electrode material, and alpha-Si film was used as the sacrificial material fabricated by low Temperature PECVD technology. No metal or dielectric material plug was used for the anchor supporting structure, which make the process much more controllable and flexible. For one of the Sensor product application, B-doped alpha-Si film was used as sensing material fabricated by PECVD and in situ doping process. The sensing resistor, which is the most important structure of this product, was fabricated with different approaches. In the top electrode scheme, TaN was used as electrode layer on top of sensing material whose pattern was to define the sensing resistor. In the bottom electrode scheme, TaN electrode layer was located on bottom of sensing material. The two schemes were comparatively studied to show their advantages and drawbacks. Conclusion was made that both the scheme can match the product requirements, and bottom electrode scheme was the better choice for its well control for sensing material loss and uniformity of sensing resistor, which was most important to the performance and yield of MEMs based IR sensor products.

Abstract: This paper presents the design of actuator using magnetostrictive material under zero pre-stress conditions for direct current input, which is being developed to move friction pads of a disc brake for braking action. Comparison of analytical, experiment and Maxwell simulation of coils in free air is being carried out to predict the magnetic field generated by them and magneto motive force reaching the measuring end of magnetostrictive material. Experiments are being conducted to verify the performance of magnetostrictive actuator for dc input under zero-preload conditions. A set of magnetization curves are being predicted using Jiles-Atherton model in the context of control applications that require an accurate characterization of the relation between input applied magnetic field and strain output by the actuator. Further the validation of Jiles-Atherton model results is being done with the results obtained from experiments.

Abstract: MEMS (Microelectromechanical Systems) refers to the technology integrating electrical and mechanical components with feature size of 1~1000 microns. Due to its small size, low cost, low power consumption and high efficiency, MEMS technology has been widely used in many fields.In this paper,the design optimization of MEMS accelerometer is discussed.The main objective of this investigation is to find a optimum design of MEMS,which satisfies a set of given constraints. The accelerometer employs a double folded beam flexure system and the mass being displaced is the proof mass.Due to the complex nature of the problem,a genetic algorithm (GA) is developed for the optimization of MEMS.The GA attempts to minimize the die area and so the four optimal parameter values can be determined. MEMS accelerometers can be used in air-bag deployment systems in automobiles.The experimental results will show the optimal design of MEMS.

Abstract: The method of simulation design at the computer systems is discussed. In the system identification theory of systems, modelling a program implementation is presented. The simulation of systems depends on definition of their mathematical models. The simulation method is rooted in the fact it is an experimental method comprising aspect like model calibration and data collection. These models are presented in a matrix form in a very good way. A matrix form is often employed to define tasks in the field of science and engineering.. The result of simulation of mathematical models of mechatronic devices, control and communication technology, control, climate changes and etc. can be created using parallel computer architecture. Advantages for users are presented by practical example of cutting process associated with the simulation of the observer.

Abstract: A novel design methodology for soft eFPGA is proposed. In comparison with the previous soft core design approach, a structured-description strategy is applied and the process of logic synthesis is bypassed in the new design flow. Thus, the capability of processing the bidirectional routing architectures of the mainstream eFPGAs is obtained, while the conventional soft core design method could only handle the eFPGA with directional routing structure. Moreover, the experiment result shows eFPGA designed with this new method is 2 times denser than that designed with the conventional method. To verify this method, a proof-of-concept eFPGA prototype is designed and also presented.

Abstract: This paper addresses the problem of color restoration on Lukac color filter array (CFA) pattern [. Digital camera acquires the continuous color spectrum using three filters. However, each pixel indicates only a sample out of three channels. This order is called a mosaicking and the opposite process is called demosaicking. This article designs filters for Lukac CFA, and apply it to generate demosaicked images. The objective (CPSNR and S-CIELAB) and visual quality comparison are provided in simulation results section.

Abstract: In the last two decades, super-resolution and demosaicking have been researched actively. Generally, digital camera suffers from both color filtering and low spatial resolution. Therefore it is worth studying above issues. In this paper, we design filters to conduct super-resolution for digital camera. Bayer pattern has been widely used in digital camera. In this paper, we conduct experiments on X-Trans color filter array (CFA) pattern. Experimental results confirm that the proposed filters are effective for solving demosaicking issues.

Abstract: mageries are acquired by digital cameras using a single sensor covered with a color filter array (CFA). The most generally employed CFA pattern is Bayer CFA. Therefore in the acquired CFA imagery, each pixel includes only one of three colors: they are red, green, and blue. This CFA color interpolation methods reconstruct losing color information of the other two primary colors for every single pixel. In a single pair of Bayer CFA, there are two green pixels and one red pixel and one blue pixel. In this paper, we interchanged green pixel with other colors. The performance comparison is shown in Experimental results section.

Abstract: A soft decision making model is verified its applicability in explaining variety of engineering issues. In particular, fuzzy rule-based inference approach is an important part of fuzzy set theory, where the number of prosperous applications is rather seldom, and few applied topics are known and executed so far. The processing for format conversion approach is one of them. In this paper, we proposed fuzzy rule-based inferring system for image format conversion. A new method for linguistic image processing based on fuzzy logic is provided, and its visual quality comparison on reconstructed image is examined.

Abstract: This paper discusses the issue of tradeoff between image size and performance in PSNR on bit plane image. A bit plane of a digital discrete signal is a set of bits indicate a presented bit plane in each of the binary numbers depicting the image. Image can be converted into a series of binary signal by shattering them up into their bit planes. The 0^th bit plane is the least significant bit and the last bit plane is the most significant bit. Experimental results show that the best tradeoff is using the third to the seventh bit planes.