Understanding phase lag is important when scanning at high speeds with piezo flexure stages. This article describes the phase relationship between the command signal and the stage response. The response is monitored using the internal (in this case capacitive) sensor. The bandwidth of a system is the key element to phase lag. Using control parameters […]
The LC.300 Series Piezo Controller is the latest addition to nPoint’s nanopositioning electronics. This new closed-loop controller is designed to address OEM applications that benefit from speed, precision, and flexibility but do not require the advanced feature set of the LC.400 Piezo Controller. LC.300 Digital Controllers are designed to operate closed-loop, flexure-guided nanopositioners, with smooth […]
ScanImage was developed as a laser scanning software tool that can be used for custom microscopes. This allows the user to customize hardware for challenging applications where commercial microscopes may not be a good fit. ScanImage is an open source platform designed to integrate various hardware suppliers depending on the needs of the user. nPoint […]
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 with conventional microscopes in many […]
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. Each has advantages for certain […]
