| Titre : | Bistability, higher harmonics, and chaos in AFM (2011) |
| Auteurs : | Robert W. Stark, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Materials today (Vol. 13 N° 9, Septembre 2010) |
| Article en page(s) : | pp. 24-32 |
| Note générale : | Ingénierie |
| Langues : | Anglais |
| Index. décimale : | 620 (Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie) |
| Tags : | Bistability Nanometres Sensor Force electrostatic magnetic Non-linearity Nanoscale material Atomic force |
| Résumé : |
A dynamic atomic force microscope sensitively probes surface properties with subnanometre lateral resolution. In the amplitude modulation mode, the force-sensing tip oscillates a few nanometres. The force sensor is a harmonic oscillator that interacts with a barrier, which can be described as a non-linear potential consisting of an attractive well and a repulsive wall. Further non-linearities may be introduced by adhesion, electrostatic or magnetic forces. Thus, the character of the non-linearity is intimately related to the material properties. This review highlights the non-linear dynamics in the amplitude modulation mode and how they enable and affect nanoscale material characterisation.
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| DEWEY : | 620 |
| ISSN : | 1369-7021 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1369702110701620 |
