Tailoring the crystal growth of quartz on silicon for patterning epitaxial piezoelectric films
Qianzhe Zhang,Qianzhe Zhang,David Sánchez-Fuentes,Andrés Gómez,Rudy Desgarceaux,Benoit Charlot,Jaume Gazquez,Adrian Carretero-Genevrier,Martí Gich +8 more
- Vol. 1, Iss: 9, pp 3741-3752
TLDR
In this article, the authors showed that by increasing the quantity of devitrifying agent (Sr) it is possible to switch from a porous flat film to one dominated by larger, fully dense α-quartz crystals.Abstract:
Epitaxial films of piezoelectric α-quartz could enable the fabrication of sensors with unprecedented sensitivity for prospective applications in electronics, biology and medicine. However, the prerequisites are harnessing the crystallization of epitaxial α-quartz and tailoring suitable film microstructures for nanostructuration. Here, we bring new insights into the crystallization of epitaxial α-quartz films on silicon (100) from the devitrification of porous silica and the control of the film microstructures: we show that by increasing the quantity of devitrifying agent (Sr) it is possible to switch from an α-quartz microstructure consisting of a porous flat film to one dominated by larger, fully dense α-quartz crystals. We also found that the film thickness, relative humidity and the nature of the surfactant play an important role in the control of the microstructure and homogeneity of the films. Via a multi-layer deposition method, we have extended the maximum thickness of the α-quartz films from a few hundreds of nm to the μm range. Moreover, we found a convenient method to combine this multilayer approach with soft lithography to pattern silica films while preserving epitaxial crystallization. This improved control over crystallization and the possibility of preparing patterned films of epitaxial α-quartz on Si substrates pave the path to future developments in applications based on electromechanics, optics and optomechanics.read more
Citations
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Journal ArticleDOI
Micro/Nanostructure Engineering of Epitaxial Piezoelectric α-Quartz Thin Films on Silicon.
Qianzhe Zhang,Qianzhe Zhang,David Sánchez-Fuentes,Rudy Desgarceaux,Pau Escofet-Majoral,Judith Oró-Soler,Jaume Gazquez,Guilhem Larrieu,Benoit Charlot,Andrés Gómez,Martí Gich,Adrian Carretero-Genevrier +11 more
TL;DR: Unprecedented large-scale fabrication of ordered arrays of piezoelectric epitaxial quartz nanostructures on silicon substrates by the combination of soft-chemistry and top-down lithographic techniques to develop a cost-effective on-chip integration of nanostructureured α-quartz MEMS with enhanced sensing properties of relevance in different fields of application.
Journal ArticleDOI
Additive manufacturing of smart polymeric composites: Literature review and future perspectives
TL;DR: In this article , the additive manufacturing of functional polymer nanocomposites, which offer compliant structures with flexible manufacturing processes with high strength, low cost, and long-term stability, is investigated.
Journal ArticleDOI
Structural organization and dynamics of FCHo2 docking on membranes
Ignacio Casuso,David Sánchez-Fuentes,Charlotte Arpin-André,Raissa Rathar,Volker Baecker,Anna Castro,Thierry Lorca,Julien Viaud,Stéphane Vassilopoulos,Adrian Carretero-Genevrier,Laura Picas +10 more
TL;DR: The results indicate that PI(4,5)P2 domains assist FCHo2 docking at specific membrane regions, where it self-assembles into ring-like-shaped protein patches, and this accumulation enhances clathrin assembly.
Journal ArticleDOI
Surface-Directed Self-Epitaxial Crystallization of Poly(ε-caprolactone) from Isotropic to Highly Orientated Lamellae
Wei Liu,Hua-Mo Yin,Ai Shi,Wen-Jing Sun,Wu Diwei,Shishu Huang,Baisong Zhao,Jia-Zhuang Xu,Zhong-Ming Li +8 more
TL;DR: In this article, a facile means to engineer oriented surface topology of poly(e-caprolactone) (PCL) via homoepitaxial crystallization was presented.
Controlling Silica in its Crystalline and Amorphous States: A Problem in Surface Science
TL;DR: In this article, the glass-crystal transition in real space using scanning probe microscopy has been solved by solving a long-standing problem posed during the first half of the 20th century.
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