Concept
Quartz (électronique)
Publications associées (502)
Controlling crystal cleavage in focused ion beam shaped specimens for surface spectroscopy
Philip Johannes Walter Moll, Matthias Carsten Putzke, Andrew Scott Hunter
Our understanding of quantum materials is commonly based on precise determinations of their electronic spectrum by spectroscopic means, most notably angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy. Both require atomicall ...
Melville2024Ultrahigh-quality-factor micro- and nanomechanical resonators using dissipation dilution
Tobias Kippenberg, Alberto Beccari, Nils Johan Engelsen
Mechanical resonators are widely used in sensors, transducers and optomechanical systems, where mechanical dissipation sets the ultimate limit to performance. Over the past 15 years, the quality factors in strained mechanical resonators have increased by f ...
Berlin2024Experimental observation of topological transition in linear and nonlinear parametric oscillators
Romain Christophe Rémy Fleury, Benjamin Apffel
Parametric oscillators are examples of externally driven systems that can exhibit two stable states with opposite phase depending on the initial conditions. In this work, we propose to study what happens when the external forcing is perturbed by a continuo ...
2024Room-temperature quantum optomechanics using an ultralow noise cavity
Tobias Kippenberg, Guanhao Huang, Alberto Beccari, Nils Johan Engelsen
At room temperature, mechanical motion driven by the quantum backaction of light has been observed only in pioneering experiments in which an optical restoring force controls the oscillator stiffness1,2. For solid-state mechanical resonators in which oscil ...
Berlin2024Study of growth-induced point defects and their impact on InGaN-based optoelectronic devices
GaN exhibits a decomposition tendency for temperatures far below its melting point and common growth temperatures used in metal-organic vapour phase epitaxy (MOVPE).This characteristic is known to be a major obstacle for realising GaN bulk substrate. There ...
EPFL2024Error field detection and correction studies towards ITER operation
Olivier Sauter, Bernhard Sieglin, Leonardo Pigatto
In magnetic fusion devices, error field (EF) sources, spurious magnetic field perturbations, need to be identified and corrected for safe and stable (disruption-free) tokamak operation. Within Work Package Tokamak Exploitation RT04, a series of studies hav ...
Iop Publishing Ltd2024Transversal Spurious Mode Suppression in Ultra-Large-Coupling SH0 Acoustic Resonators on YX36 degrees-Cut Lithium Niobate
Luis Guillermo Villanueva Torrijo, Silvan Stettler
This work reports on the design and fabrication of fundamental shear horizontal (SH0) mode acoustic resonators based on a suspended lithium niobate (LNO) film at 1.04 GHz. Due to the large e16 piezoelectric coefficient of YX36 degrees.-cut LNO, fabricated ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023A 5G n77 Filter Using Shear Bulk Mode Resonator With Crystalline X-cut Lithium Niobate Films
This paper presents the use of a shear bulk acoustic mode resonator made of a membrane of X-cut lithium niobate (LiNbO3) for ultra-wide band filter applications. Aluminum interdigitated (IDT) electrodes are deposited on top of the LiNbO3 thin film as well ...
IEEE2023Piezoelectric thin films on Quartz substrate
The aim of this project is to deposit a thin film of aluminum nitride (AlN) or aluminum scandium nitride (AlScN) on a quartz substrate showing good piezoelectric properties for use in tuning fork oscillators. Quartz oscillators are commonly used in various ...
2023Low-temperature processing of screen-printed piezoelectric KNbO3 with integration onto biodegradable paper substrates
Danick Briand, Luis Guillermo Villanueva Torrijo, Morgan Mc Kay Monroe
The development of fully solution-processed, biodegradable piezoelectrics is a critical step in the development of green electronics towards the worldwide reduction of harmful electronic waste. However, recent printing processes for piezoelectrics are hind ...
2023