Laser Micro-Patterning by Means of Optical Fibers with Micro-grinded Lens End Faces



Introduction

Nano-patterning of polymer surface has found a wide range of applications including biotechnology, where holes in the size of hundreds nm can influence the growth and differentiation of relatively large living cells . Instead of the e-beam patterning technique used in the Ref. 1, we ap-plied direct writing by laser-light. In our previous papers , we have demonstrated that th ....etc

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Microstrip antenna for mobile phones
There are several types of microstrip antennas used in telecommunication. These are also known as printed antennas. The microstrip antenna radiator shapes which xcare commonly seen are square, rectangular, circular and elliptical but it is also posible to create radiator of any continuous shape. mobile radio communications devices extensively use this antenna because of their low profile, are mechanically rugged and can be conformable. They are also relatively inexpensive to manufacture due to the ....etc

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Demand for the research and development of the micro-manufacturing technologies is being fueled by the ever-increasing trend towards miniaturization over a wide spectrum of disciplines and industries. Recent technological advancement in the defense, biomedical, telecom-munications, consumer electronics have spearheaded the need for micromanufacturing technology, which is now beginning to find application in the automotive and aerospace industries due to the economic potential of the micro-factory paradigm. Micro-scale mechanical manufacturing p ....etc

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On the macro scale, feedback control is routinely applied to improve performance and enable new tasks in complex and uncertain systems operating in noisy environments. Our lab has focused on applying feedback control ideas to systems on the micro scale. Here we show how control methods can improve existing performance in the UCLA lab-on-a-chip electrowetting system and can create entirely new capabilities in our 'micro fluidic tweezers' cell steering devices.In the Electro-Wetting-On-Dielectric (EWOD) system developed at UCLA by CJ Kim, a grid ....etc

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Design and development of X-band micro strip patch antenna

Introduction

In high-performance aircraft, spacecraft, satellite and missile applications, where size, weight, cost, performance, ease of installation, and aerodynamic profiles are constraints, low profile antennas may be required. These antennas should have low profile, conformable to planar and non-planar surfaces, simple and inexpensive to manufacture using modern printed-circuit technology, mechanically robust when mounted on rigid surfaces, compatible with MMIC designs, and w ....etc

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Abstract

The main scope of the project is to control the Dish antenna from a remote area.
Stepper motors operate differently from normal DC motors, which rotate when voltage is applied to their terminals. Stepper motors, on the other hand, effectively have multiple toothed electromagnets arranged around a central gear-shaped piece of iron. The electromagnets are energized by an external control circuit, such as a microcontroller.
To make the motor shaft turn, first one electromagnet is given power, which makes the gear's teeth m ....etc

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To get full information or details of plasma antenna please have a look on the pages

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http://seminarsprojects.net/Thread-plasma-antenna?pid=46499&mode=threaded

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