Microtechnology

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Development and production of Circle chain, pulley, the pulley hot in the production of high-strength..And you can see more from timing belt conveyors boxing head gear motor boat engine nfl fans gear Conveyor Roller Bearing Exhaust Fan Motor power door operator mini vacuum motor 2 Stroke Motor Wikibooks has a book on the topic of MicrotechnologyWikimedia Commons has media related to: MicrotechnologyMicrotechnology is technology with features near one micrometre (one millionth of a metre, or 10-6 metre, or 1?m).In the 1960s, scientists learned that by arraying large numbers of microscopic transistors on a single chip, microelectronic circuits could be built that dramatically improved performance, functionality, and reliability, all while reducing cost and decreasing volume. This development led to the Information Revolution.More recently, scientists have learned that not only electrical devices, but also mechanical devices, may be miniaturized and batch-fabricated, promising the same benefits to the mechanical world as integrated circuit technology has given to the electrical world. While electronics now provide the rains for today advanced systems and products, micromechanical devices can provide the sensors and actuators the eyes and ears, hands and feet which interface to the outside world.Today, micromechanical devices are the key components in a wide range of products such as automobile airbags, ink-jet printers, blood pressure monitors, and projection display systems. It seems clear that in the not-too-distant future these devices will be as pervasive as electronics.Contents1 Micro electromechanical systems 2 Items constructed at the microscopic level 3 External links 4 See also // Micro electromechanical systemsAn etched silicon waferThe term MEMS, for Micro Electro Mechanical Systems, was coined in the 1980 to describe new, sophisticated mechanical systems on a chip, such as micro electric motors, resonators, gears, and so on. Today, the term MEMS in practice is used to refer to any microscopic device with a mechanical function, which can be fabricated in a batch process (for example, an array of microscopic gears fabricated on a microchip would be considered a MEMS device but a tiny laser-machined stent or watch component would not). In Europe, the term MST for Micro System Technology is preferred, and in Japan MEMS are simply referred to as "micromachines". The distinctions in these terms are relatively minor and are often used interchangeably.Though MEMS processes are generally classified into a number of categories such as surface machining, bulk machining, LIGA, and EFAB there are indeed thousands of different MEMS processes. Some produce fairly simple geometries, while others offer more complex 3-D geometries and more versatility. A company making accelerometers for airbags would need a completely different design and process to produce an accelerometer for inertial navigation. Changing from an accelerometer to another inertial device such as a gyroscope requires an even greater change in design and process, and most likely a completely different fabrication facility and engineering team.MEMS technology has generated a tremendous amount of excitement, due to the vast range of important applications where MEMS can offer previously unattainable performance and reliability standards. In an age where everything must be smaller, faster, and cheaper, MEMS offers a compelling solution. MEMS have already had a profound impact on certain applications such as automotive sensors and inkjet printers. The emerging MEMS industry is already a multi-billion dollar market. It is expected to grow rapidly and become one of the major industries of the 21st century. Cahners In-Stat Group has projected sales of MEMS to reach $12B by 2005. The European NEXUS group projects even larger revenues, using a more inclusive definition of MEMS.Microtechnology is often constructed using photolithography. Lightwaves are focused through a mask onto a surface. They solidify a chemical film. The soft, unexposed parts of the film are washed away. Then acid etches away the material not protected.Microtechnology's most famous success is the integrated circuit. It has also been used to construct micromachinery.Items constructed at the microscopic levelThe following items have been constructed on a scale of 1 micrometre using photolithography:Electronics: wires resistors transistors thermionic valves diodes sensors capacitors Machinery: electric motors gears levers bearings hinges Fluidics: valves Channels pumps turbines v?d?eMicrotechnologyMEMS MST MicromachineryBasic structuresInterdigital transducer Cantilever MicrochannelApplicationsSensorsMicrobolometerActuatorsComb drive Scratch Drive Actuator Thermal actuatorSwitchesDigital micromirror device Optical switchOtherIBM Millipede RF-MEMS MOEMS Bio-MEMS Microfluidics...(and so on)


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