Publications by authors named "R Bachelet"

Background: End-stage chronic kidney disease (CKD) is a significant concern for older adults and is often associated with cognitive impairment (CI). The origin of this CI is multifactorial, involving vascular and metabolic factors. Additionally, renal treatments, including dialysis, may affect cognition.

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Development of bulk acoustic wave filters with ultra-wide pass bands and operating at high frequencies for 5and 6generation telecommunication applications and micro-scale actuators, energy harvesters and sensors requires lead-free piezoelectric thin films with high electromechanical coupling and compatible with Si technology. In this paper, the epitaxial growth of 36°Y-X and 30°X-Y LiNbOfilms by direct liquid injection chemical vapour deposition on Si substrates by using epitaxial SrTiOlayers, grown by molecular beam epitaxy, has been demonstrated. The stability of the interfaces and chemical interactions between SrTiO, LiNbOand Si were studied experimentally and by thermodynamical calculations.

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Crystallization temperature is a critical parameter in the stabilization of the metastable ferroelectric phase of HfO. The optimal crystallization temperature used for polycrystalline films is too low to grow epitaxial films. We have developed a new growth strategy, based on the use of an ultrathin seed layer, to obtain high-quality epitaxial films of orthorhombic HfZrO at a lower temperature.

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Objective: During the COVID-19 pandemic, older people and patients with psychiatric disorders had an increased risk of being isolated. The French National Authority for Health has recommended a reinforced follow-up of these patients. Cross-sectional studies reported an increased risk of developing anxiety and depression during pandemic.

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The growth of crystalline Li-based oxide thin films on silicon substrates is essential for the integration of next-generation solid-state lithionic and electronic devices including on-chip microbatteries, memristors, and sensors. However, growing crystalline oxides directly on silicon typically requires high temperatures and oxygen partial pressures, which leads to the formation of undesired chemical species at the interface compromising the crystal quality of the films. In this work, we employ a 2 nm gamma-alumina (γ-AlO) buffer layer on Si substrates in order to grow crystalline thin films of LiTiO (LTO), a well-known active material for lithium-ion batteries.

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