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Using nPoint Piezo Stages with Auto Focus Systems
Auto Focus systems are developed to maintain precision focus over extended periods of time and can be used to automate image acquisition while scanning objects. Auto Focus systems combined with piezo stages can produce images with speed and precision even with varying environmental conditions. Auto Focus systems can be combined...
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Nanopositioning Stage Operating Conditions
Consideration of the environmental conditions where a nanopositioning system will operate is important to achieve the desired result for a given application. These conditions include: Piezo stages can be made from various materials such as invar, stainless steel, titanium and aluminum. Each has advantages; however it is often important to...
Resonance Frequency of a Piezo Flexure Stage
The first (or lowest) resonance frequency per axis is typically specified for a nanopositioner. The resonance frequency could be of the mode along the motion axis or along other axes including rotation and other complex modes. In general, the higher the resonance frequency of a system, the higher the stability...
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Two New Piezo Stages from nPoint
The NPXY60-258 and the NPXY60Z20-257 piezo stages are the latest additions to nPoint’s nanopositioning lineup. These stages are designed for advanced research markets in need of UHV and non-magnetic positioning. Middleton, WI – May 14, 2014 – The NPXY60-258 and NPXY60Z20-257 nanopositioners are piezo driven, flexure guided stages, designed for...
Piezo Stage Sensors for Closed-loop Control
A position sensor is necessary to provide closed-loop control for the nanopositioning system. There are different types of sensors that can be used to provide the measuring feedback to eliminate inherent issues with piezos such as non-linearity and hysteresis. Three common types of sensors include capacitive, strain gauge, and LVDT. ...
Settling time is defined as the time it takes for a piezo stage to move to a commanded position and settle to within 2% of its final value when performing a step response. A small signal step response reflects the dynamic characteristics of the system in greater detail. A step...