Motion Controller Enables Atomic-Force Microscopy

Physik Instrumente has introduced the E-725 three-channel motion controller for applications such as tracking or atomic-force microscopy. Using the digital technology, users have access via software to numerous parameters that optimise the settling time and linearity, or compensate for system inertia during fast scans. Among other performance features, the E-725 optimises the dynamic positioning of specimen in the X, Y and Z directions The E-725 uses modern interfaces such as USB and Ethernet.

There are many software drivers available to support its integration as a sub-system in existing structures. The E-725's powerful 32-bit processor with 225MHz ensures a servo rate of 20kHz. The position signal has a 24-bit resolution. Digital inputs and outputs offer direct trigger signals from and to the devices in the system environment. Optionally, the individual axes can be controlled via analogue inputs. In addition, the ID chip feature makes it possible to directly operate the nanopositioning system without prior adjustment at the factory.

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