Výsledky vyhledávání - "L. P. Tran Huu Hue"

Symmetric Reflector Ultrasonic Transducer Modeling and Characterization: Role of the Matching Layer on Electroacoustic Performance

Autor: Marc Lethiecq, Naoufal Saadaoui, Van Thien Nguyen, Jean Francois Saillant, Guy Feuillard, L. P. Tran Huu Hue

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 68:3608-3615

Symmetric reflector ultrasonic transducers (SRUTs) are a new type of ultrasonic transducer that take advantage of the ultrasonic wave emitted on the rear face of the active element. In this work, the electroacoustic modeling and characterization of s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82cff48b20906782140dd5291ca17046
https://doi.org/10.1109/tuffc.2021.3101124

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Free carrier enhanced depletion in ZnO nanorods decorated with bimetallic AuPt nanoclusters

Autor: V. Strano, Salvatore Cosentino, Peter Lievens, Giorgia Franzò, C. Spinella, Rahim Bahariqushchi, Guylaine Poulin-Vittrant, Salvo Mirabella, L. P. Tran-Huu-Hue, Mario Scuderi, Didier Grandjean, Antonio Terrasi, E. Dumons

Publikováno v: Nanoscale
Nanoscale, Royal Society of Chemistry, 2020, 12 (37), pp.19213-19222. ⟨10.1039/D0NR04134C⟩
Nanoscale, 2020, 12 (37), pp.19213-19222. ⟨10.1039/D0NR04134C⟩

The decoration of semiconductor nanostructures with small metallic clusters usually leads to an improvement of their properties in sensing or catalysis. Bimetallic cluster decoration typically is claimed to be even more effective. Here, we report a d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b19b9fab5c18931ea95c2ef40b552e2f
https://lirias.kuleuven.be/handle/20.500.12942/688448

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Modelling nonlinearity in piezoceramic transducers: From equations to nonlinear equivalent circuits

Autor: Denis Parenthoine, Marc Lethiecq, M. Lematre, L.-P. Tran-Huu-Hue, F. Vander Meulen, Lionel Haumesser

Publikováno v: Ultrasonics. 51:109-114

Quadratic nonlinear equations of a piezoelectric element under the assumptions of 1D vibration and weak nonlinearity are derived by the perturbation theory. It is shown that the nonlinear response can be represented by controlled sources that are add

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e601971bc2339710a4df29d1b109da5c
https://doi.org/10.1016/j.ultras.2010.08.009

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Calculation of dissipation resistances in a single-element transducer

Autor: Marc Lethiecq, G. Feuillard, V. Loyau, L. P. Tran Huu Hue

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 54:2385-2393

In this paper, a new formulation of the electrical input impedance of a single element transducer is presented. The resistive part of the electrical impedance that takes into account acoustic radiation in the front medium and losses in the transducer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e90e862f88537a2280cad35de0fef87
https://doi.org/10.1109/tuffc.2007.543

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Fabrication and Characterization of ZnO Nanowire-based Piezoelectric Nanogenerators for Low Frequency Mechanical Energy Harvesting

Autor: Nicolas Camara, Abhishek Singh Dahiya, Marc Lethiecq, Daniel Alquier, L.-P. Tran Huu Hue, Charles Opoku, Christopher Oshman, Guylaine Poulin-Vittrant

Publikováno v: Physics Procedia
Physics Procedia, Elsevier, 2015, 70, pp.909-913. ⟨10.1016/j.phpro.2015.08.188⟩

International audience; The present work investigates the possibility to charge a Lithium micro-battery (LiB) via direct conversion of ambient mechanical energy into electricity using piezoelectric ZnO nanowire (NW) based microgenerators (PGs). An es

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ed8854c084a356529d929fbd0507c1f
https://hal.archives-ouvertes.fr/hal-02092562/document

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Characterisation of P(VDF-TrFE) material taking into account dielectric relaxation: application to modelling of high frequency transducers

Autor: Franck Levassort, Marc Lethiecq, Guy Feuillard, L. P. Tran Huu Hue

Publikováno v: Ultrasonics. 36:41-45

A piezoelectric copolymer has been characterised with a new method which takes into account the frequency dispersion by modelling the dielectric relaxation phenomenon in the material. The different steps of the characterisation are presented and expe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ad7e0d5ef7d6cbf9afea0b4791d5605
https://doi.org/10.1016/s0041-624x(97)00081-4

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Strategy of Modelling and Simulation of Electromechanical Conversion in ZnO Nanowires

Autor: Marc Lethiecq, Guylaine Poulin-Vittrant, Olivier Graton, L.-P. Tran Huu Hue

Publikováno v: Advances in Applied Ceramics
Advances in Applied Ceramics, Maney Publishing, 2013, 112 (2), pp.85-90. 〈10.1179/1743676112Y.0000000029〉
Advances in Applied Ceramics, Maney Publishing, 2013, 112 (2), pp.85-90. ⟨10.1179/1743676112Y.0000000029⟩

International audience; A strategy to establish a model that takes into account the different pitfalls relative to the simulation of ZnO nanowire (NW) based devices is proposed. Starting from the governing equations of the problem, an equivalent circ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e74bc534b0b10573b386af0b5ffcaf5
https://hal.archives-ouvertes.fr/hal-01814885

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Study of mechanical and dielectric losses contribution to the surface‐acoustic‐wave attenuation in piezoelectric ceramics

Autor: Marc Lethiecq, L. Tessier, Guy Feuillard, C. Millar, L. P. Tran‐Huu‐Hue

Publikováno v: Journal of Applied Physics. 77:3061-3066

The surface‐acoustic‐wave (SAW) propagation losses of two ceramics, a lead zirconate titanate composition and a modified lead titanate composition, are studied. Contrary to crystals, where only mechanical losses contribute, dielectric losses and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3e0e20505c82bdf27aa5887f5cfe250
https://doi.org/10.1063/1.358657

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New tools for electromechanical characterisation of piezoceramics

Autor: E. Le Clezio, T. Delaunay, L. P. Tran Huu Hue, Guy Feuillard, Franck Levassort, Marc Lethiecq

Publikováno v: Journal of Electroceramics
Journal of Electroceramics, Springer Verlag, 2007, 19 (4), pp.419-426. ⟨10.1007/s10832-007-9177-4⟩

This paper presents three methods that can be used to characterise piezoelectric integrated structures or materials, based on the resolution of an inverse problem. Analytical models that describe the electrical and/or mechanical behaviour of the mate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d078e59de32ff272ad3c88a810135e8
https://hal.archives-ouvertes.fr/hal-01804614

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