Work

Local raster scanning for high-speed imaging of biopolymers in atomic force microscopy

Year: 2011

Type: article

Abstract: A novel algorithm is described and illustrated for high speed imaging of biopolymers and other stringlike samples using atomic force microscopy. The method uses the measurements in real-time to steer the tip of the instrument to localize the scanning area over the sample of interest. Depending on the sample, the scan time can be reduced by an order of magnitude or more while maintaining image resolution. Images are generated by interpolating the non-raster data using a modified Kriging algorithm. The method is demonstrated using physical simulations that include actuator and cantilever dynamics, nonlinear tip-sample interactions, and measurement noise as well as through scanning experiments in which a two-axis nanopositioning stage is steered by the algorithm using simulated height data.

Source: Review of Scientific Instruments

DOI: 10.1063/1.3600558

Authors: Peter I. Chang, Peng Huang, Jungyeoul Maeng, Sean B. Andersson

Institution: Boston University

Language: English

Topic: Force Microscopy Techniques and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Institute of General Medical Sciences

Awards: CAREER: Nonlinear Control for Single Molecule Tracking, A Novel SFM-based Method for Studying Single Molecule Dynamics