Controlling a Magnetic Force Microscope to Track a Magnetized Nanosize Particle

Baronov, Dimitar; Andersson, Sean B.

doi:10.1109/tnano.2009.2029982

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…The magnetic force acting on a volume element dV' in the tip can be given by [19][20][21] dF=μ 0 ▽(M(r')·H(r+r'))dV' (2) where µ 0 is the magnetic permeability of free space, M(r') is the magnetization of the volume element in the tip, and H(r+r') is the stray field from the sample to the tip [17]. The tip can be simple to be a point probe with one magnetic element, then the magnetic force can be rewritten as [22] F m =μ 0 ▽(m·H) (3) where m is the effective dipole moment of the tip.…”

Section: Theorymentioning

confidence: 99%

Effect of liquid on the magnetic force microscope imaging

Liu

Song

Wang

et al. 2017

2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3m-Nano)

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It is known that when the probe vibrating in liquid, the oscillation of the cantilever is significantly damped by the interaction forces between the water molecular and the probe surface, which is known as the hydration force. Thus, the parameters of a tapping magnetic probe are significantly affected. In this work, the resonant frequency, Q-factor and spring constant of the magnetic probe in air and liquid environments were analyzed. The MFM images of a hard disk acquired in ambient and liquid conditions were compared. It was found that the hydration force significantly affected the parameters of the magnetic probe and then the quality of the MFM images was significantly decreased. To improve the quality of the magnetic images, the drive amplitude and the lift height were adjusted. The results showed that the magnetic features were recognized with the increases of the drive amplitude and the appropriate lift height.

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Section: Theorymentioning

confidence: 99%

Effect of liquid on the magnetic force microscope imaging

Liu

Song

Wang

et al. 2017

2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3m-Nano)

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“…This control law was also used in [15]. This law requires a choice of desired intensity level C. In practice, however, knowledge of the absolute intensity level is difficult to obtain.…”

Section: Tracking Controllermentioning

confidence: 99%

“…The algorithm takes advantage of the geometric features of the scalar field defined by the quantity to be mapped. Its scale-invariant nature makes it well-suited for application to systems with nanometer-scale features as evidenced by its recent application to tracking of single particles in magnetic force microscopy [15].…”

Section: Introductionmentioning

confidence: 99%

A nonlinear approach to tracking single nanometer-scale fluorescent particles

Andersson

2010

Proceedings of the 2010 American Control Conference

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We describe a nonlinear control law for tracking single, sub-diffraction limit fluorescent particles that takes advantage of the geometric properties of the spatial intensity pattern. We present simulation results for tracking a single particle based on confocal measurements to illustrate the approach. The control law converts each intensity measurement into actuator commands directly, and consequently should yield improved temporal response over existing algorithms. We consider both two-and three-dimensional tracking.

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“…8: for All critical points r * i uncovered by ζ do 14: 6 illustrates an example run of Alg. 1 within a particular environment.…”

Section: A the Topology Guided Strategymentioning

confidence: 99%

“…A common theme is the exploration of unknown environments that are abstracted by scalar potential fields by using sensors with limited sensing range. The application of this type of search is almost universal, from environmental monitoring [4], where such quantities as species density, radioactivity and so forth can only be measured at the position of the sensor, to the the nano-scale imaging [8], where the main tool is the Single Probe Microscope, which acquires an image by scanning a probe over a sample.…”

Section: Introductionmentioning

confidence: 99%

Topology guided search of potential fields

Baronov

Baillieul

2010

49th IEEE Conference on Decision and Control (CDC)

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Using reactive control algorithms and a dictionary of motion primitives, we have developed search and reconnaissance protocols for mobile robots aimed at efficiently discovering key features of an unknown potential field's topology (as opposed to its geometry). This work has in a natural way led to the creation of parsimonious reconnaissance routines that do not rely on any prior knowledge about the environment. The design of topology guided search protocols uses a mathematical framework that quantifies the relationship between what is discovered and what remains to be discovered. This quantification rests on an information theory inspired model, whose properties allow us to treat search as a problem in optimal information acquisition. The main idea is that "conservative" and "aggressive" search strategies can be precisely defined, and search decisions regarding exploration vs. exploitation choices can be informed by our information-like metric.

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Controlling a Magnetic Force Microscope to Track a Magnetized Nanosize Particle

Cited by 9 publications

References 19 publications

Effect of liquid on the magnetic force microscope imaging

Effect of liquid on the magnetic force microscope imaging

A nonlinear approach to tracking single nanometer-scale fluorescent particles

Topology guided search of potential fields

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