Weymouth, Alfred John and Hofmann, Thomas and Giessibl, Franz J. (2014) Quantifying Molecular Stiffness and Interaction with Lateral Force Microscopy. SCIENCE, 343 (6175). pp. 1120-1122. ISSN 0036-8075, 1095-9203
Full text not available from this repository. (Request a copy)Abstract
The spatial resolution of atomic force microscopy (AFM) can be drastically increased by terminating the tip with a single carbon monoxide (CO) molecule. However, the CO molecule is not stiff, and lateral forces, such as those around the sides of molecules, distort images. This issue begs a larger question of how AFM can probe structures that are laterally weak. Lateral force microscopy (LFM) can probe lateral stiffnesses that are not accessible to normal-force AFM, resulting in higher spatial resolution. With LFM, we determined the torsional spring constant of a CO-terminated tip molecule to be 0.24 newtons per meter. This value is less than that of a surface molecule and an example of a system whose stiffness is a product not only of bonding partners but also local environment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCANNING TUNNELING MICROSCOPE; REAL-SPACE; ATOM; IDENTIFICATION; SPECTROSCOPY; RESOLUTION; SURFACES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Nov 2019 09:16 |
| Last Modified: | 18 Nov 2019 09:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10478 |
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