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Bistability, higher harmonics, and chaos in AFM / Robert W. Stark in Materials today, Vol. 13 N° 9 (Septembre 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 24-32 Titre : Bistability, higher harmonics, and chaos in AFM Type de document : texte imprimé Auteurs : Robert W. Stark, Auteur Année de publication : 2011 Article en page(s) : pp. 24-32 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Bistability  Nanometres  Sensor  Force  electrostatic  Force  magnetic  Non-linearity  Nanoscale  material  Atomic  force Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie 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. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701620 [article] Bistability, higher harmonics, and chaos in AFM [texte imprimé] / Robert W. Stark, Auteur . - 2011 . - pp. 24-32. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 24-32 Mots-clés : Bistability  Nanometres  Sensor  Force  electrostatic  Force  magnetic  Non-linearity  Nanoscale  material  Atomic  force Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie 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. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701620