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attoAFM III
low temperature atomic force microscope, tuning fork based
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The attoAFM III is an atomic force microscope designed particularly
for applications at low and ultra low temperature. Due to the non-optical
shear force detection based on a tuning fork, this system is ideally
suited for applications where input of light is problematic. A
typical application of the attoAFM III microscope is Scanning
Gate Microscopy (SGM) on semiconductor structures. This microscope
is also compatible with the commercially available Akiyama probe.
Principle - the attoAFM III uses a tuning fork
sensor as detection mechanism for the tip-sample separation, allowing
high resolution non-contact mode imaging without the need for any
optical deflection detection techniques. In general, an AFM tip
is glued onto one leg of a small quartz tuning fork and forced
to oscillate in horizontal direction with an amplitue of typically
50 pm. Damping of the amplitude due to tip-sample interaction
when approaching the sample is monitored and/or used as a feedback
signal. The force resolution of this technique is typically 0.1
pN.
Request Quotation & Support : |
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Available
Controller for this Product:
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FPGA-based, fully digital SPM controller
with xy-scan generator incl. feedback control und phase locked loop (PLL)
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| ANC350 |
Piezo positioning controller
for attocube's encoded positioners| |
| ANC300 |
Piezo positioning controller
for attocube's open-loop positioners | |
Complete
System Solutions:
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Complete system
configurations for this product. |
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| Product
Key Features
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ultra
compact AFM head with unprecedented stability |
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highly sensitive,
non-optical tuning fork sensor |
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LT compatible
preamplifier located in close proximity to tuning fork |
| Benefits
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ultra
high resolution imaging in non-contact mode |
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high Q factor
for highest sensitivity measurements |
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optimized S/N
ratio due to LT compatible preamplifier |
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no optical alignment
necessary |
| Tuning fork AFM image of a patterned Si/SiO-substrate
recorded at 320 mK.Height: 20 ± 2 nm
recorded with the attoAFM III (attocube application
labs, 2007). |
| Tuning fork AFM image of an InAs layer showing monoatomic
steps with a height of 2.04 ± 0.02 Angstrom.
This corresponds well to the atomic lattice constant of InAs,
2.15 Å (attocube application labs, 2007). |
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