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Claquage Electrique et Optique d'Allotropes du Carbone : Mécanismes et Applications pour le Stockage de Données

Abstract : Today, data storage applications rely mainly on two types of materials: chalcogenides for optical storage (e.g. Blu-Ray) and silicon for electronic storage (e.g. Flash memory). While these materials have proven to be the most efficient for widespread applications, both have limitations. Recently, with the rise of graphene, carbon allotropes have been studied both for their intrinsic properties and for applications; graphene and other carbon allotropes have very interesting electronic, thermal and mechanical properties that can make these materials more efficient than either chalcogenides or silicon for certain applications. In this thesis, we study the feasibility and potential of the usage of carbon as a data storage material.Firstly, we focus on developing optical data storage. It is found that both continuous-wave and pulsed lasers can be used to induce reversible phase changes in carbon thin films, thus opening the way toward carbon-based data storage. Along the way, several phenomena are discovered, shown and explained by using advanced characterization techniques and thermal modelling.Secondly, we focus on electronic data storage by developing graphene-based memories that are found to switch reliably between two well-separated resistance states for a large number of cycles. To assess the potential of this new technology, we characterize the switching mechanism and develop an electro-mechanical model enabling to predict the best performances attainable: these memories would potentially be much faster than Flash memories while playing the same role (non-volatile storage).
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Submitted on : Wednesday, January 17, 2018 - 8:35:07 PM
Last modification on : Wednesday, November 3, 2021 - 6:13:20 AM
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  • HAL Id : tel-01665811, version 2


Loïc Loisel. Claquage Electrique et Optique d'Allotropes du Carbone : Mécanismes et Applications pour le Stockage de Données. Physique [physics]. Université Paris Saclay (COmUE); Nanyang Technological University (Singapour), 2016. Français. ⟨NNT : 2016SACLX021⟩. ⟨tel-01665811v2⟩



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