Towards a Fully Automated Scanning Probe Microscope for Biomedical Applications

The increase in capabilities of Scanning Probe Microscopy (SPM) has resulted in a parallel increase in complexity that limits the use of this technique outside of specialised research laboratories. SPM automation could substantially expand its application domain, improve reproducibility and increase...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2021-04, Vol.21 (9), p.3027
Main Authors: Szeremeta, Witold K, Harniman, Robert L, Bermingham, Charlotte R, Antognozzi, Massimo
Format: Article
Language:English
Subjects:
Automation
Biomedical materials
femtonewton resolution
Friction
inertial drive
Laboratories
Lasers
Mechanical Phenomena
Microscopy
Microscopy, Scanning Probe
NMR
Nuclear magnetic resonance
Reproducibility of Results
Scanning probe microscopes
Scanning probe microscopy
Silicon nitride
SPM
Stainless steel
translation stages
vertical probes
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Summary:The increase in capabilities of Scanning Probe Microscopy (SPM) has resulted in a parallel increase in complexity that limits the use of this technique outside of specialised research laboratories. SPM automation could substantially expand its application domain, improve reproducibility and increase throughput. Here, we present a bottom-up design in which the combination of positioning stages, orientation, and detection of the probe produces an SPM design compatible with full automation. The resulting probe microscope achieves sub-femtonewton force sensitivity whilst preserving low mechanical drift (2.0±0.2 nm/min in-plane and 1.0±0.1 nm/min vertically). The additional integration of total internal reflection microscopy, and the straightforward operations in liquid, make this instrument configuration particularly attractive to future biomedical applications.
ISSN:1424-8220
1424-8220
DOI:10.3390/s21093027