High-speed tapping-mode atomic force microscopy using a <i>Q</i>-controlled regular cantilever acting as the actuator: Proof-of-principle experiments

Balantekin, M.; Satır, Sarp; Torello, David; Degertekin, F. Levent

doi:10.1063/1.4903469

Cited by 4 publications

(4 citation statements)

References 27 publications

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“…In water, we did not obtain significant variance in the Q-factors due to high viscous damping. The ratio of the second eigenmode resonance to the fundamental one is greatly increased for reshaped cantilevers which makes them preferable in the actuatorless HS-AFM imaging [12,13]. If the original cantilever is in rectangular shape, it is difficult to lower the Q-factor further for highspeed imaging in air since there is not enough material left to remove.…”

Section: Discussionmentioning

confidence: 99%

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Manipulating the frequency response of small high-frequency atomic force microscope cantilevers

Brar¹,

Balantekin

2020

Meas. Sci. Technol.

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We study small (less than 10 µm-long) high-frequency (greater than 1 MHz) cantilevers specially designed for visualization of biomolecular processes in high-speed atomic force microscopes. The frequency responses of the first three flexural eigenmodes are investigated for the modified geometries. It is found that the Q-factors can be significantly altered in the desired way by reengineering the cantilever geometry without affecting its main operational parameters, such as the spring constant and the resonance frequency of the first flexural eigenmode in an air environment. In addition, higher-order flexural resonances can be moved away from the fundamental resonance with these geometrical modifications. The Q-factors in liquid, on the other hand, do not show a significant difference due to high viscous damping of the medium. Regular cantilevers modified by a focused ion beam are used to demonstrate the validity of the finite element simulation model.

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Section: Discussionmentioning

confidence: 99%

“…In the recently proposed fast actuation method [12,13], e.g., it is desired to have a low Q-factor for the fundamental eigenmode and high Q-factors for the higher eigenmodes. Also, an increased separation of fundamental and higher eigenmode resonances improves the quality of the acquired topography in this method.…”

Section: Introductionmentioning

confidence: 99%

Manipulating the frequency response of small high-frequency atomic force microscope cantilevers

Brar¹,

Balantekin

2020

Meas. Sci. Technol.

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“…We have shown that the imaging speed can be increased further by using cantilevers with higher resonance frequencies. We have already implemented the proposed highspeed method and performed the proof-of-principle experiments on a commercial AFM system [40]. This method will indeed minimize the time spent for dynamic AFM imaging experiments without requiring special or small cantilevers.…”

Section: Resultsmentioning

confidence: 99%

High-speed dynamic atomic force microscopy by using a Q-controlled cantilever eigenmode as an actuator

Balantekin

2015

Ultramicroscopy

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Keywords:Atomic force microscope High-speed dynamic AFM Fast actuation Q-controlled eigenmode of a cantilever a b s t r a c tWe present a high-speed operating method with feedback to be used in dynamic atomic force microscope (AFM) systems. In this method we do not use an actuator that has to be employed to move the tip or the sample as in conventional AFM setups. Instead, we utilize a Q-controlled eigenmode of an AFM cantilever to perform the function of the actuator. Simulations show that even with an ordinary tappingmode cantilever, imaging speed can be increased by about 2 orders of magnitude compared to conventional dynamic AFM imaging.

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“…It is challenging to achieve high-speed TM imaging because an increase of the speed can cause a loss of the tip–sample interaction and/or the annihilation of the cantilever tapping vibration, particularly when the imaging size is large. Existing efforts on high-speed TM imaging [ 6 – 9 ] only led to a speed increase up to three times at the cost of a substantially (over five times) increased imaging force. By using the AMLM imaging mode, it is aimed to achieve high-speed dynamic-mode AFM imaging while maintaining the tip–sample interaction force similar as that in low-speed TM imaging.…”

Section: Introductionmentioning

confidence: 99%

High-speed dynamic-mode atomic force microscopy imaging of polymers: an adaptive multiloop-mode approach

Ren

Zou

2017

Beilstein J. Nanotechnol.

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Adaptive multiloop-mode (AMLM) imaging to substantially increase (over an order of magnitude) the speed of tapping-mode (TM) imaging is tested and evaluated through imaging three largely different heterogeneous polymer samples in experiments. It has been demonstrated that AMLM imaging, through the combination of a suite of advanced control techniques, is promising to achieve high-speed dynamic-mode atomic force microscopy imaging. The performance, usability, and robustness of the AMLM in various imaging applications, however, is yet to be assessed. In this work, three benchmark polymer samples, including a PS–LDPE sample, an SBS sample, and a Celgard sample, differing in feature size and stiffness of two orders of magnitude, are imaged using the AMLM technique at high-speeds of 25 Hz and 20 Hz, respectively. The comparison of the images obtained to those obtained by using TM imaging at scan rates of 1 Hz and 2 Hz showed that the quality of the 25 Hz and 20 Hz AMLM imaging is at the same level of that of the 1 Hz TM imaging, while the tip–sample interaction force is substantially smaller than that of the 2 Hz TM imaging.

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High-speed tapping-mode atomic force microscopy using a Q-controlled regular cantilever acting as the actuator: Proof-of-principle experiments

Cited by 4 publications

References 27 publications

Manipulating the frequency response of small high-frequency atomic force microscope cantilevers

Manipulating the frequency response of small high-frequency atomic force microscope cantilevers

High-speed dynamic atomic force microscopy by using a Q-controlled cantilever eigenmode as an actuator

High-speed dynamic-mode atomic force microscopy imaging of polymers: an adaptive multiloop-mode approach

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