Nouvelles approches pour la nano-caractérisation, et la micro- et nano-robotique par sondes locales

Jérôme Polesel 1
1 Service de Physique et Chimie des Surfaces et des Interfaces
SPCSI - Service de Physique et de Chimie des Surfaces et Interfaces
Abstract : The development of the Scanning Tunnelling Microscope (STM), and after the Atomic Force Microscope (AFM) in the 80's represent the most significant breakthrough of Nanosciences, else its true starting point. Since 1991, Atomic Force Microscopy has been used successfully to investigate the biological world. The versatility of the instrument allowed to study different biological objects from the isolated protein to cells' tissue in their living environment. Recently, an increasing interest rose up for a transition from micrometric scanning probes to nanometric scanning probes in order to increase the acquisition data rate, to improve the minimal detection force and to open the avenue for High Speed characterization. Some of these problematics have been partially resolved with new High Speed AFM prototypes, but with limited image resolution and with limited scanning range (<1 micron). Furthermore, these techniques need the use of AFM cantilevers smaller to tens of micrometres to keep high detection sensitivity with high resonance frequency in the order of the megahertz and even more. So, today, the conventional optical lever detection of AFM arrives to its diffraction limits to implement probes with dimensions of few light wavelengths. New methods of detection for the scanning probes or even new kind of scanning probes have to be realized and optimized for the next generation of scanning probe instruments. In this context, a panorama of works giving some ways of answer to these new problematics of characterization, of handling, and of fabrication at the nanometre and micrometer scales by the use of new scanning probes instruments will be exhibited in this manuscript.
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Jérôme Polesel. Nouvelles approches pour la nano-caractérisation, et la micro- et nano-robotique par sondes locales. Chimie-Physique [physics.chem-ph]. Université de Versailles-Saint Quentin en Yvelines, 2012. ⟨tel-00845307⟩

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