Results 241 to 250 of about 397,310 (297)

Functional polymers: scanning force microscopy insights

Phys. Chem. Chem. Phys., 2006
Scanning force microscopy (SFM) and related techniques make it possible to visualize polymer systems with a molecular resolution. Beyond imaging, they also enable the unveiling of a variety of (dynamic) physico-chemical properties of both isolated polymer chains and their supramolecular architectures, including structural, mechanical and electronic ...
P Samorì, M Surin, V Palermo, R Lazzaroni, P Leclère   +4 more
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Scanning Lorentz force microscopy

Applied Physics Letters, 2002
We describe a technique for imaging magnetic flux density by measuring lateral Lorentz force generated by current through a nonmagnetic tip in a stray magnetic flux density emanating from a sample. We demonstrate its usefulness by showing Lorentz force images of recorded tracks in a magnetic hard disk together with the topographic image.
Atsushi OKUDA, Jun ICHIHARA, Yutaka MAJIMA   +2 more
openaire   +1 more source

Scanning Force Microscopy of Artificial Membranes

ChemBioChem, 2001
Visualization of biological membranes by scanning force microscopy (SFM) has tremendously improved the current understanding of protein-lipid interactions under physiological conditions. SFM is the only tool to directly image processes on surfaces in aqueous solution at molecular resolution.
A, Janshoff, C, Steinem
openaire   +2 more sources

Combined Scanning Electrochemical−Atomic Force Microscopy

Analytical Chemistry, 1999
A combined scanning electrochemical microscope (SECM)-atomic force microscope (AFM) is described. The instrument permits the first simultaneous topographical and electrochemical measurements at surfaces, under fluid, with high spatial resolution. Simple probe tips suitable for SECM-AFM, have been fabricated by coating flattened and etched Pt microwires
J V, Macpherson, P R, Unwin
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Combined scanning tunneling and force microscopy

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 1994
A combined scanning tunneling and force microscope (STM/FM) was built which allows for the simultaneous measurement of forces and force gradients along STM constant current contours. Measuring Au(111) surfaces with this combined STM/FM, very low tip–sample interaction forces and variations of the local stiffness (force gradient) in the vicinity of ...
Anselmetti, Dario, BARATOFF, A, GÜNTHERODT, HJ, GERBER, C, MICHEL, B, ROHRER, H   +5 more
openaire   +1 more source

Fast spiral-scan atomic force microscopy

Nanotechnology, 2009
In this paper, we describe a new scanning technique for fast atomic force microscopy. In this method, the sample is scanned in a spiral pattern instead of the well established raster pattern. A spiral scan can be produced by applying single frequency cosine and sine signals with slowly varying amplitudes to the x-axis and y-axis of an atomic force ...
Mahmood, I. A., Moheimani, S. O. Reza
openaire   +2 more sources

Scanning force microscopy based amperometric biosensors

Analytical and Bioanalytical Chemistry, 2007
Cantilever-based biosensing has developed into an important research area especially for biomedical and clinical analysis. In particular, the possibility to scan miniaturized amperometric biosensors with high-fidelity distance control across biomedically relevant sample surfaces enables the determination of pertinent analytes such as, e.g., adenosine 5′
Christine, Kranz, Justyna, Wiedemair
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Scanning Probe Microscopy: Ultrasonic Force and Scanning Kelvin Probe Force Microscopy

2004
In 1981, Gerd Binning and Heinrich Rohree at IBM Zurich developed the first generation of the scanning probe microscope, the scanning tunneling microscope for which they received the Noble Prize in physics. The Scanning Tunneling Microscope (STM) was a fantastic breakthrough with its capability to image atoms with angstrom precision.
C. Druffner, E. Schumaker, S. Sathish, G. S. Frankel, P. Leblanc   +4 more
openaire   +1 more source

Scanning Force Microscopy (SFM)

1992
The scanning tunneling microscope (STM) has revolutionized the field of microscopy. Even newer scanning microscopes are being developed which are based on piezoelectric transducers and sharp probing tips that scan a surface while a feedback loop regulates the distance between the probing tip and sample. In 1986 Binniget al.
E. Meyer, H. Heinzelmann
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Scanning force microscopy under aqueous solutions

Current Opinion in Structural Biology, 1997
Merely ten years after its invention, the scanning force microscope is becoming a powerful method to investigate the structure and dynamics of biological molecules under aqueous environments. From the visualization of transcription in real time to the mechanical manipulation of individual proteins, the advances made during the past year open up a vast ...
BUSTAMANTE C., KELLER D. J., RIVETTI, Claudio   +2 more
openaire   +2 more sources