Lithography Optics Position Focus

Lithography Optics Position Focus Semiconductor Lithography Optics Position Focus Positioning Description One specific area where capacitance systems excel is high resolution focusing of complex lens systems such as those found in atomic force microscopes, vision inspection machines and photolithography tools. In a multi-million dollar photolithography [...]

Tape Cartridge Movement

Tape Cartridge Movement Semiconductor Tape Cartridge Movement Positioning Description Researchers are presently working on drives with track widths in the 5 to 1 micron region. For these small widths, tape wander, properly called Lateral Tape Movement (LTM), must be less than 1 micron. This is because [...]

Height Gap Of Inkjet Printers

Height Gap Of Inkjet Printers Consumer Electronics Height Gap Of Inkjet Printers Positioning Description Introduction:  Inkjet printers require a certain distance between the inkjet print head and the paper. If the distance is set incorrectly, the printed images get blurry. Current state of the art [...]

Piezo Stage Positioning

Piezo Stage Positioning Consumer Electronics Piezo Stage Positioning Description Positioning stages using piezoelectric stack actuators (PEA) have very high resolution. However, it is difficult to achieve precise dynamic motion tracking using traditional linear controllers such as PID due to the inherent hysteresis nonlinearity of piezoelectric [...]

Photolithography Using Capacitance Sensors

Photolithography Using Capacitance Sensors Semiconductor Photolithography Using Capacitance Sensors Positioning Description When it comes to photolithography, how accurate are our sensors? Accurate enough to measure this: ​   Photo by D. Carr and H. Craighead, Cornell The world's smallest guitar is 10 micrometers long -- [...]

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