Results 211 to 220 of about 124,304 (265)
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Acoustic Microscopy by Atomic Force Microscopy
Applied Physics Letters, 1994We have constructed an atomic force microscope enabling one to image the topography of a sample, and to monitor simultaneously ultrasonic surface vibrations in the MHz range. For detection of the distribution of the ultrasonic vibration amplitude, a part of the position-sensing light beam reflected from the cantilever is directed to an external knife ...
U. Rabe, W. Arnold
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Capillary force in atomic force microscopy
The Journal of Chemical Physics, 2004Under ambient conditions, a water meniscus generally forms between a nanoscale atomic force microscope tip and a hydrophilic surface. Using a lattice gas model for water and thermodynamic integration methods, we calculate the capillary force due to the water meniscus for both hydrophobic and hydrophilic tips at various humidities.
Joonkyung, Jang +2 more
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Hyphenating Atomic Force Microscopy
Analytical Chemistry, 2014Atomic force microscopy can be readily combined with complementary instrumental techniques ranging from optical to mass-sensitive methods. This Feature highlights recent advances on hyphenated AFM technology, which enables localized studies and mapping of complementary information at surfaces and interfaces.
Alexander, Eifert, Christine, Kranz
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Nanorheology by atomic force microscopy
Review of Scientific Instruments, 2014We present an Atomic Force Microscopy (AFM) based method to investigate the rheological properties of liquids confined within a nanosize gap formed by an AFM tip apex and a solid substrate. In this method, a conventional AFM cantilever is sheared parallel to a substrate surface by means of a lock-in amplifier while it is approaching and retracting from
Tai-De, Li +3 more
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Scanning in atomic force microscopy
2009 IEEE International Conference on Robotics and Automation, 2009In this paper, we present an adaptive scanning approach for atomic force microscopy (AFM) imaging. Our simulation results demonstrate that this new approach can achieve approximately one order of magnitude better scanning efficiency over current scanning method.
Dongdong Zhang, Xiaoping Qian
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Atomic Force Microscopy of Viruses
2019Atomic force microscopy employs a nanometric tip located at the end of a micro-cantilever to probe surface-mounted samples at nanometer resolution. Because the technique can also work in a liquid environment it offers unique possibilities to study individual viruses under conditions that mimic their natural milieu.
P J, de Pablo, I A T, Schaap
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Current Protocols in Microbiology, 2008
AbstractThe atomic force microscope (AFM) is an important tool for studying biological samples due to its ability to image surfaces under liquids. The AFM operates by physical interaction of a cantilever tip with the molecules on the cell surface. Adhesion forces between the tip and cell surface molecules are detected as cantilever deflections.
Andreea, Trache, Gerald A, Meininger
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AbstractThe atomic force microscope (AFM) is an important tool for studying biological samples due to its ability to image surfaces under liquids. The AFM operates by physical interaction of a cantilever tip with the molecules on the cell surface. Adhesion forces between the tip and cell surface molecules are detected as cantilever deflections.
Andreea, Trache, Gerald A, Meininger
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Nanofabrication with Atomic Force Microscopy
Journal of Nanoscience and Nanotechnology, 2004Atomic force microscopy (AFM) was developed in 1986. It is an important and versatile surface technique, and is used in many research fields. In this review, we have summarized the methods and applications of AFM, with emphasis on nanofabrication. AFM is capable of visualizing surface properties at high spatial resolution and determining biomolecular ...
Qian, Tang, San-Qiang, Shi, Limin, Zhou
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Chaos in Atomic Force Microscopy
Physical Review Letters, 2006Chaotic oscillations of microcantilever tips in dynamic atomic force microscopy (AFM) are reported and characterized. Systematic experiments performed using a variety of microcantilevers under a wide range of operating conditions indicate that softer AFM microcantilevers bifurcate from periodic to chaotic oscillations near the transition from the ...
Hu, Shuiqing, Raman, Arvind
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Atomic Force Microscopy and Proteins
Protein & Peptide Letters, 2002This review briefly introduces the principles of atomic force microscopy (AFM) applied to protein samples. AFM provides three-dimensional surface images of the proteins with high resolution. The advantage of AFM for protein studies is that AFM can visualize directly the molecule under physiological conditions without previous treatment. AFM operated in
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