Interatomic force laws that evade dynamic measurement
Abstract
Measurement of the force between two atoms is performed routinely with the atomic force microscope. The shape of this interatomic force law is now found to directly regulate this capability: rapidly varying interatomic force laws, which are common in nature, can corrupt their own measurement.
Copyright and License
© 2018 Nature Publishing Group.
Acknowledgement
We acknowledge support from the Australian Research Council Centre of Excellence in Exciton Science (CE170100026), the Australian Research Council Grants Scheme and Deutsche Forschungsgemeinschaft within SFB 689, project A9, and CRC 1277, project A02. The referees are thanked for their comments.
Contributions
J.E.S. supervised the project. F.H. and F.J.G. performed initial measurements on the Cu–Cu atomic system in which an anomaly between the matrix and Sader–Jarvis methods was observed. This was communicated to J.E.S. who explored with B.D.H. various theories to explain the anomaly. J.E.S. identified ill-posedness in the inverse problem, formulated the inflection point test and performed all calculations. F.H. and F.J.G. devised and performed further measurements using the Cu–CO system to validate the inflection point test. All authors analysed the data and contributed to the writing of the paper.
Conflict of Interest
The authors declare no competing interests.
Additional details
Identifiers
- ISSN
- 1748-3395
- URL
- https://rdcu.be/doe2F
Funding
- Australian Research Council
- CE170100026
- Deutsche Forschungsgemeinschaft
- SFB 689, project A9
- Deutsche Forschungsgemeinschaft
- CRC 1277, project A02