Sensors 2012, 12(1), 686-703; doi:10.3390/s120100686
Article

A Feedfordward Adaptive Controller to Reduce the Imaging Time of Large-Sized Biological Samples with a SPM-Based Multiprobe Station

SIC-BIO, Bioelectronics and Nanobioengineering Group, Department of Electronics, University of Barcelona, Marti i Franques, 1, 08028, Barcelona, Spain
* Author to whom correspondence should be addressed.
Received: 18 November 2011; in revised form: 5 January 2012 / Accepted: 6 January 2012 / Published: 10 January 2012
(This article belongs to the Special Issue Control Systems and Robotics in Bioengineering)
PDF Full-text Download PDF Full-Text [3948 KB, uploaded 10 January 2012 11:05 CET]
Abstract: The time required to image large samples is an important limiting factor in SPM-based systems. In multiprobe setups, especially when working with biological samples, this drawback can make impossible to conduct certain experiments. In this work, we present a feedfordward controller based on bang-bang and adaptive controls. The controls are based in the difference between the maximum speeds that can be used for imaging depending on the flatness of the sample zone. Topographic images of Escherichia coli bacteria samples were acquired using the implemented controllers. Results show that to go faster in the flat zones, rather than using a constant scanning speed for the whole image, speeds up the imaging process of large samples by up to a 4x factor.
Keywords: scanning probe microscopy; feedforward control; adaptive control; nanorobotics; fast imaging; biological samples; bacteria

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Otero, J.; Guerrero, H.; Gonzalez, L.; Puig-Vidal, M. A Feedfordward Adaptive Controller to Reduce the Imaging Time of Large-Sized Biological Samples with a SPM-Based Multiprobe Station. Sensors 2012, 12, 686-703.

AMA Style

Otero J, Guerrero H, Gonzalez L, Puig-Vidal M. A Feedfordward Adaptive Controller to Reduce the Imaging Time of Large-Sized Biological Samples with a SPM-Based Multiprobe Station. Sensors. 2012; 12(1):686-703.

Chicago/Turabian Style

Otero, Jorge; Guerrero, Hector; Gonzalez, Laura; Puig-Vidal, Manel. 2012. "A Feedfordward Adaptive Controller to Reduce the Imaging Time of Large-Sized Biological Samples with a SPM-Based Multiprobe Station." Sensors 12, no. 1: 686-703.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert