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View article: Reconfigurable Flexible Haptic Interface Using Localized Friction Modulation
Reconfigurable Flexible Haptic Interface Using Localized Friction Modulation Open
Current flexible haptic technologies struggle to render textures as effectively as rigid surfaces with friction reduction due to poor propagation of elastic waves in flexible substrates. Alternative solutions using different actuators have…
View article: Development of a friction modulation haptic interface based on thin-film AlN actuators
Development of a friction modulation haptic interface based on thin-film AlN actuators Open
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View article: Transparent PZT Capacitors on Glass for Actuating Applications
Transparent PZT Capacitors on Glass for Actuating Applications Open
Fully integrated transparent ITO/PZT/ITO capacitors on glass were obtained thanks to a recently developed wafer-to-wafer layer-transfer process to bypass the thermal budget issue associated with the high crystallization temperature of PZT …
View article: MEMS Loudspeaker for In-Ear Application
MEMS Loudspeaker for In-Ear Application Open
the models are then explained, and ways of improving the models and the performance of the loudspeaker are discussed.
View article: High performance piezoelectric MEMS loudspeaker based on an innovative wafer bonding process
High performance piezoelectric MEMS loudspeaker based on an innovative wafer bonding process Open
International audience
View article: High performance piezoelectric MEMS loudspeaker based on an innovative wafer bonding process
High performance piezoelectric MEMS loudspeaker based on an innovative wafer bonding process Open
Despite a significant number of new structures in the past few years, MEMS loudspeaker still aren't competitive in terms of performance compared to non-MEMS loudspeakers for free field applications. For industrial perspectives, a high soun…
View article: Development, Optimization, Biological Assays, and In Situ Field Immersion of a Transparent Piezoelectric Vibrating System for Antifouling Applications
Development, Optimization, Biological Assays, and In Situ Field Immersion of a Transparent Piezoelectric Vibrating System for Antifouling Applications Open
This paper presents the development and experimentations of transparent vibrating piezoelectric micromembranes dedicated to protecting immersed measurement instruments from marine biofouling. As any surface immersed is subject to the adhes…
View article: Total Harmonic Distortion of a Piezoelectric MEMS Loudspeaker in an IEC 60318-4 Coupler Estimation Using Static Measurements and a Nonlinear State Space Model
Total Harmonic Distortion of a Piezoelectric MEMS Loudspeaker in an IEC 60318-4 Coupler Estimation Using Static Measurements and a Nonlinear State Space Model Open
We propose a method to evaluate the Total Harmonic Distortion generated by a cantilever-based PZT loudspeaker inside an IEC 60318-4 coupler. The model is validated using experimental data of a commercial loudspeaker. Using the time domain …
View article: Piezoelectric Actuated Glass Plate for Liquid Density and Viscosity Measurement
Piezoelectric Actuated Glass Plate for Liquid Density and Viscosity Measurement Open
This paper reports on a new system for liquid density and viscosity measurement based on a freely suspended rectangular vibrating plate actuated by piezoelectric ceramic (PZT) actuators. The Lamb mode used for these measurements allows us …
View article: Stress optic modulator using thin-film PZT for LIDAR applications
Stress optic modulator using thin-film PZT for LIDAR applications Open
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View article: Low Voltage Haptic Slider Built Using Sol-Gel Thin-Film PZT Actuators Reported on Glass
Low Voltage Haptic Slider Built Using Sol-Gel Thin-Film PZT Actuators Reported on Glass Open
This paper reports on the development of a unique haptic solution based on thin-film Pb(Zr0.52,Ti0.48)O3 (PZT) actuators reported on glass substrate, allowing the feeling of textured surfaces playing with the variable friction between a fi…
View article: Ferroelastic relaxation at 20 GHz evidenced by large frequency range picosecond acoustics
Ferroelastic relaxation at 20 GHz evidenced by large frequency range picosecond acoustics Open
We present a method to perform elastic measurements on a thin-film as a function of frequency between a few GHz and a few hundred GHz. The technique is mainly based on Picosecond Acoustics (PA), which is an ultrafast optical technique that…
View article: Development of a resonant asymmetric micro mirror using an electro active polymer actuation
Development of a resonant asymmetric micro mirror using an electro active polymer actuation Open
In this paper we present the development of a resonant asymmetric micro mirror. In particular, we prove the possibility of using an Electro Active Polymer as actuation material. The working principle of the micro mirror and the design reta…
View article: Designing Vibrotactile Widgets with Printed Actuators and Sensors
Designing Vibrotactile Widgets with Printed Actuators and Sensors Open
Physical controls are fabricated through complicated assembly of parts requiring expensive machinery and are prone to mechanical wear. One solution is to embed controls directly in interactive surfaces, but the proprioceptive part of gestu…
View article: Development of a MEMS Plate Based on Thin-Film Piezoelectric AlN Actuators for Biological Applications
Development of a MEMS Plate Based on Thin-Film Piezoelectric AlN Actuators for Biological Applications Open
This paper presents the development of a lab-on-chip system based on the use of local vibrations to mechanically stimulate biological materials. It reports on the development and characterization of a piezoelectric actuators driven system …
View article: Static and Dynamic Studies of Electro-Active Polymer Actuators and Integration in a Demonstrator
Static and Dynamic Studies of Electro-Active Polymer Actuators and Integration in a Demonstrator Open
Nowadays, the haptic effect is used and developed for many applications—particularly in the automotive industry, where the mechanical feedback induced by a haptic system enables the user to receive information while their attention is kept…
View article: Development of Haptic Button Based on Electro Active Polymer Actuator
Development of Haptic Button Based on Electro Active Polymer Actuator Open
In this paper, we present the study of haptic circular buttons, providing force restitution or vibration sensations when they are touched by the user. A FEM (finite element method) model was developed, to predict the frequency and the disp…
View article: PZT Actuated MEMS Membrane Characterization and Post Simulation for Digital Loudspeaker Array Application
PZT Actuated MEMS Membrane Characterization and Post Simulation for Digital Loudspeaker Array Application Open
A Digital Loudspeaker Array (DLA) is an electro-mechanical transductor which receives a numerical signal as input data and allows the analogical conversion directly in the air. We designed PZT actuated membranes in order to obtain the high…
View article: Low Voltage MEMS Digital Loudspeaker Array Based on Thin-film PZT Actuators
Low Voltage MEMS Digital Loudspeaker Array Based on Thin-film PZT Actuators Open
This paper reports on the development of a Digital Loudspeaker Array (DLA) solution based on Pb(Zr0.52,Ti0.48)O3 (PZT) thin-film actuated membranes. These membranes called speaklets are arranged in a matrix and operate in a binary manner b…
View article: A 256 MEMS Membrane Digital Loudspeaker Array Based on PZT Actuators
A 256 MEMS Membrane Digital Loudspeaker Array Based on PZT Actuators Open
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