Auburn, MA (PRWEB) July 19, 2013
Piezo positioners provide sub-nanometer resolution and fast response. Until now, travel ranges have been limited to a few 100 microns, enough for most microscopy applications. A new drive principle developed by PI (Physik Instrumente) now extends the travel range to 2 mm while maintaining very short settling times on the order of 20 milliseconds.
High resolution microscopy methods, such as two-photon microscopy, make it possible to record 3D stacks with up to 1 mm depth in biological samples. Here conventional piezo techniques have posed a limitation. PI’s N-725 piezo-motor objective positioner and scanner breaks with conventional wisdom and helps exploit the new possibilities.
Based on a patented piezo-walk motor, the N-725 provides travel ranges of up to 2 mm along the optical axis to quickly and precisely change the focal plane. Despite its small size, the new device replaces and combines the performance of two individual stages: a fine focus piezo drive and a stepper motor positioner for coarse, long travel motion.
The challenge was to implement the high-stiffness piezo motor in a compact mechanical housing no larger than PI’s previous piezo-direct-actuator based PIFOC® objective stages providing travel ranges from 0.1 to 0.4 mm.
The new long-travel piezo motor provides 5 to 20 times the travel range, sub-nanometer resolution and locks into a position, without further need for power, significantly improving long term stability.
Complete with Controller and Software:
The piezo-z-focus drive comes complete with a powerful motion controller and software. It is compatible with leading microscope imaging suite software packages.
More information is available here: http://www.physikinstrumente.com/en/products/prd
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