This is the basic head of the Solver-P4 multimode scanning probe microscope. The head contains an optical positioning system for the cantilever position registration including a 1 MW semiconductor laser having 670 nm wave length, a 4-sectional photodiode, probes securing and positioning systems and preamplifiers. Cantilevers are fixed in a special holder and placed on a table positionable by means of two microscrews. The Solver-P4 allows for using four types of tables:
- the force table (FT-1) to measure in contact and contact modulation modes;
- an STM/AFM table containing an STM preamplifier. The use of this table allows to register in addition to the FT-1 in case of a conducting cantilever application the current in the system 'cantilever's tip - substrate and to work in the tunneling microscope mode;
- the resonance microscopy table (RMT), making it possible, in addition to the possibilities provided by the FT-1, to work in the resonance microscopy and noncontact modes. This table contains a piezovibrator to actuate the cantilever's oscillation;
- the universal multimode table combining the capabilities of the three previously mentioned tables.
|
![[SOLVER Scanning Probe Microscope]](/label/solver.gif)
![[Image]](/p4-spm/fig1h.jpg)