Searched for: subject:"Atomic%5C+force%5C+microscopy"
(1 - 20 of 37)

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van den Brink, Bram (author), Alijani, F. (author), Ghatkesar, M.K. (author)
An experimental setup to perform dynamic analysis of a micro- and nano-mechanical system in vacuum, gas, and liquid is presented. The setup mainly consists of a piezoelectric excitation part and the chamber that can be either evacuated for vacuum, or filled with gas or water. The design of the piezoelectric actuator was based on a Langevin...
journal article 2019
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Chandrashekar, A. (author), Belardinelli, P. (author), Staufer, U. (author), Alijani, F. (author)
In this work, we perform a comprehensive analysis of the robustness of attractors in tapping mode atomic force microscopy. The numerical model is based on cantilever dynamics driven in the Lennard–Jones potential. Pseudo-arc-length continuation and basins of attraction are utilized to obtain the frequency response and dynamical integrity of...
journal article 2019
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Pronk, J.W. (author)
doctoral thesis 2018
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Chu, L. (author)
Atomic Force Microscopy (AFM) can not only image the topography of surfaces at atomic resolution, but can also measure accurately the different interaction forces, like repulsive, adhesive and lateral existing between an AFM tip and the sample surface. Based on AFM, various extended techniques have been developed such as colloidal probe AFM,...
doctoral thesis 2018
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Keyvani Janbahan, A. (author), Sadeghian, Hamed (author), Goosen, J.F.L. (author), van Keulen, A. (author)
The origin of amplitude reduction in Tapping Mode Atomic Force Microscopy (TM-AFM) is typically attributed to the shift in resonance frequency of the cantilever due to the nonlinear tip-sample interactions. In this paper, we present a different insight into the same problem which, besides explaining the amplitude reduction mechanism, provides...
journal article 2018
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Ando, Toshio (author), Bhamidimarri, Satya Prathyusha (author), Brending, Niklas (author), Colin-York, H. (author), Collinson, Lucy (author), De Jonge, Niels (author), De Pablo, P. J. (author), Debroye, Elke (author), Eggeling, Christian (author), Franck, Christian (author), Hoogenboom, J.P. (author)
Developments in microscopy have been instrumental to progress in the life sciences, and many new techniques have been introduced and led to new discoveries throughout the last century. A wide and diverse range of methodologies is now available, including electron microscopy, atomic force microscopy, magnetic resonance imaging, small-angle x...
review 2018
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Eeftens, J.M. (author)
Every cell deals with the challenge of organising its DNA. First, the DNA needs to be compacted in size by several orders of magnitude. For example, in each human cell, 2 meters of DNA need to fit inside a micron-sized cell nucleus. Second, the DNA needs to stay accessible for cellular processes such as transcription and replication. To achieve...
doctoral thesis 2017
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Keyvani Janbahan, A. (author), Alijani, F. (author), Sadeghian, Hamed (author), Maturova, Klara (author), Goosen, J.F.L. (author), van Keulen, A. (author)
This paper investigates the closed-loop dynamics of the Tapping Mode Atomic Force Microscopy using a new mathematical model based on the averaging method in Cartesian coordinates. Experimental and numerical observations show that the emergence of chaos in conventional tapping mode AFM strictly limits the imaging speed. We show that, if the...
journal article 2017
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Chu, L. (author), Korobko, A.V. (author), Cao, A. (author), Sachdeva, S. (author), Liu, Z. (author), de Smet, L.C.P.M. (author), Sudholter, E.J.R. (author), Picken, S.J. (author), Besseling, N.A.M. (author)
The Hamaker constant between graphene oxide and silica, which quantifies the strength of van der Waals forces is determined, by mimicking a “vacuum spacer” in an atomic force microscopyforce study. It is demonstrated that, a 2D spacer is expected to yield an accurately defined separation, owing to the high atom density and strength in planar...
journal article 2017
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Rull Trinidad, E. (author), Gribnau, T.W. (author), Belardinelli, P. (author), Staufer, U. (author), Alijani, F. (author)
The accuracy of measurements in Amplitude Modulation Atomic Force Microscopy (AFM) is directly related to the geometry of the tip. The AFM tip is characterized by its radius of curvature, which could suffer from alterations due to repetitive mechanical contact with the surface. An estimation of the tip change would allow the user to assess...
journal article 2017
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van Driel, B.A. (author), Wezendonk, T.A. (author), van den Berg, K. J. (author), Kooyman, P.J. (author), Gascon, Jorge (author), Dik, J. (author)
Titanium white (TiO<sub>2</sub>) has been widely used as a pigment in the 20th century. However, its most photocatalytic form (anatase) can cause severe degradation of the oil paint in which it is contained. UV light initiates TiO<sub>2</sub>-photocatalyzed processes in the paint film, degrading the oil binder into volatile components...
journal article 2017
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Ushakova, K. (author)
doctoral thesis 2016
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Nahar, S.N. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Schitter, G (author), Scarpas, A. (author)
Self-healing of bitumen is a property that positively contributes to the sustainability, maintenance requirements and cost effectiveness of asphalt pavements. Ideally one would like to design an asphalt mix with a well-defined healing potential. Although substantial research efforts have been dedicated to the healing mechanism in bitumen,...
conference paper 2016
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Nahar, S.N. (author)
During the service life of flexible asphalt pavements, asphalt concrete degrades due to traffic loading and environmental conditions like temperature, rain, oxidation, ultraviolet-radiation from the sun. All these environmental factors have adverse effects on the performance of bitumen, which is the binder of asphalt concrete. They are known to...
doctoral thesis 2016
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Fabre, A. (author), Salameh, S. (author), Colombi Ciacchi, Lucio (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
Efficient nanopowder processing requires knowledge of the powder’s mechanical properties. Due to the large surface area to volume ratio, nanoparticles experience relatively strong attractive interactions, leading to the formation of micron-size porous structures called agglomerates. Significant effort has been directed towards the development of...
journal article 2016
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Nanda, G. (author), Van Veldhoven, E. (author), Maas, D. (author), Sadeghian, H. (author), Alkemade, P.F.A. (author)
The authors report the direct-write growth of hammerhead atomic force microscope(AFM) probes by He+beam induced deposition of platinum-carbon. In order to grow a thin nanoneedle on top of a conventional AFM probe, the authors move a focused He+beam during exposure to a PtC precursor gas. In the final growth stage, a perpendicular movement of the...
journal article 2015
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Herfst, R. (author), Dekker, B. (author), Witvoet, G. (author), Crowcombe, W.E. (author), de Lange, D. (author), Sadeghian Marnani, H. (author)
One of the major limitations in the speed of the atomic force microscope (AFM) is the bandwidth of the mechanical scanning stage, especially in the vertical (z) direction. According to the design principles of “light and stiff” and “static determinacy,” the bandwidth of the mechanical scanner is limited by the first eigenfrequency of the AFM...
journal article 2015
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Gaitas, A. (author)
This dissertation aims to advance the current state of cantilevers with integrated metal thermal and deflection sensing elements. Metallic sensing elements enable the use of alternative substrate materials (such as polymers), that tend to exhibit higher compliance properties and are more robust (less brittle) compared to Si or Si3N4 cantilevers....
doctoral thesis 2013
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Brancart, J. (author), Scheltjes, G. (author), Diaz, M.M. (author), Van Mele, B. (author), Van Assche, G. (author)
Research in the field of smart materials that exhibit self-repair mechanisms has greatly expanded over the last few years. This is especially true for polymers and polymer composite materials. One class of self-healing polymer materials is the reversible polymer network systems that use dynamic covalent bonds as a means to repair sustained...
conference paper 2013
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Kuiper, S. (author)
This research is focused on improving the mechatronic design and control strategies of Atomic Force Microscopes (AFM) in order to increase the imaging speed of these instruments, while maintaining the resolution and accuracy of AFM. Different techniques are developed which have led to a faster lateral scanning speed, higher bandwidth control of...
doctoral thesis 2012
Searched for: subject:"Atomic%5C+force%5C+microscopy"
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