Imaging of atomic orbitals with the Atomic Force Microscope — experiments and simulations
نویسندگان
چکیده
منابع مشابه
Force Spectroscopy with the Atomic Force Microscope
Introduction and Review Atomic Force Microscope (AFM) Spectroscopy is an AFM based technique to measure, and sometimes control the polarity and strength of the interaction between the AFM tip and the sample. Although the tip-sample interaction may be studied in terms of the energy, the quantity that is measured first is always the tip-sample force, and thus the nomenclature: force spectroscopy....
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In this paper, a simple analytical model to predict the nanowear of atomic force microscope tips is presented and experimentally validated. The model is based on the assumption that the energy consumed to remove the unit volume is a material/structural (i.e. size-dependent) parameter. Nanoscratch tests show that this hypothesis is plausible and, more importantly, that the specific energy is clo...
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Atomic force microscopy is a powerful characterization tool for polymer science, capable of revealing surface structures with superior spatial resolution [1]. The universal character of repulsive forces between the tip and the sample, which are employed for surface analysis in AFM, enables examination of even single polymer molecules without disturbance of their integrity [2]. Being initially d...
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We have developed a dynamic force microscope DFM working in a novel operation mode which is referred to as phase modulation atomic force microscopy PM-AFM . PM-AFM utilizes a fixed-frequency excitation signal to drive a cantilever, which ensures stable imaging even with occasional tip crash and adhesion to the surface. The tip-sample interaction force is detected as a change of the phase differ...
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In this paper, the free vibration behaviors and flexural sensitivity of atomic force microscope cantilevers with small-scale effects are investigated. To study the small-scale effects on natural frequencies and flexural sensitivity, the consistent couple stress theory is applied. In this theory, the couple stress is assumed skew-symmetric. Unlike the classical beam theory, the new model contain...
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ژورنال
عنوان ژورنال: Annalen der Physik
سال: 2001
ISSN: 0003-3804,1521-3889
DOI: 10.1002/1521-3889(200111)10:11/12<887::aid-andp887>3.3.co;2-2