Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Manfred Weihnacht"'
Publikováno v:
Sensors, Vol 24, Iss 7, p 2292 (2024)
Ice accumulation on infrastructure poses severe safety risks and economic losses, necessitating effective detection and monitoring solutions. This study introduces a novel approach employing surface acoustic wave (SAW) sensors, known for their small
Externí odkaz:
https://doaj.org/article/246798eb91bd4260bc3354e99a5a7988
Autor:
Andrei Sotnikov, Holger Fritze, Hagen Schmidt, Nikita O. Asafiev, Denis A. Shcherbakov, Yuriy Suhak, Manfred Weihnacht, Boris P. Sorokin, Gennady M. Kvashnin
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 68:3423-3429
This article presents a study of special material properties of the single crystalline material Ca3TaGa3Si2O14 (CTGS = Catangasite). The comparatively highly ordered crystal structure and acceptable piezoelectric strength make it a candidate for micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c5342008d5d633a1f45f921edb7b903
https://doi.org/10.1109/tuffc.2021.3092831
https://doi.org/10.1109/tuffc.2021.3092831
Autor:
Manfred Weihnacht
Publikováno v:
Journal of Sensors and Sensor Systems, Vol 8, Pp 133-147 (2019)
Multi-parameter sensing is examined for thickness shear mode (TSM) resonators that are in mechanical contact with thin films and half-spaces on both sides. An expression for the frequency-dependent electrical admittance of such a system is derived wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15306f5a9ca0172a492a23f402dd40c8
https://www.j-sens-sens-syst.net/8/133/2019/jsss-8-133-2019.pdf
https://www.j-sens-sens-syst.net/8/133/2019/jsss-8-133-2019.pdf
Publikováno v:
Ultrasonics. 84:366-372
The paper numerically investigates the transmission of harmonic surface acoustic waves (SAWs) across the perfectly bonded and perfectly sliding contacts between two 90°-wedges, at least one of which possessing piezoelectric properties. The finite el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a879edc755146839a94a2b54344f7c6
https://doi.org/10.1016/j.ultras.2017.11.016
https://doi.org/10.1016/j.ultras.2017.11.016
Publikováno v:
Ultrasonics. 106
The present paper studies experimentally and numerically the surface acoustic wave (SAW) field on a piezoelectric substrate generated by interdigital transducers (IDT). On the one hand, mechanical displacements produced by the SAW are measured with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d712206010c7a4662680ef51b13bfee9
https://pubmed.ncbi.nlm.nih.gov/32305680
https://pubmed.ncbi.nlm.nih.gov/32305680
Publikováno v:
Physics of the Solid State. 57:2241-2245
The permittivity spectra of solid solutions (1–x)SrTiO3–xDyScO3 (x = 0, 0.01, 0.03) and ceramic samples of strontium titanate doped with Sc3+ ions have been studied in the frequency range from 10 Hz to 1MHz. It has been found that the permittivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f390a42ee9ea9d1579b06b01deb72c3
https://doi.org/10.1134/s1063783415110335
https://doi.org/10.1134/s1063783415110335
Publikováno v:
Journal of Physics and Chemistry of Solids. 85:91-95
Dielectric measurements of disordered La 3 Ga 5 SiO 14 (LGS), La 3 Ga 5,5 Ta 0,5 O 14 (LGT) and ordered Sr 3 NbGa 3 Si 2 O 14 (SNGS), Sr 3 TaGa 3 Si 2 O 14 (STGS) single crystals of the langasite family performed at frequencies from 10 Hz to 1 MHz at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6883aa05eea6686de900dfb3039baaf
https://doi.org/10.1016/j.jpcs.2015.05.014
https://doi.org/10.1016/j.jpcs.2015.05.014
Publikováno v:
Physics of the Solid State. 57:1183-1187
The elastic properties of new piezoelectric Sr3NbGa3Si2O14 crystals of the langasite (lanthanum gallium silicate) family have been investigated. The temperature dependences of the elastic constants C 11, C 33, C 66, and C 44 have been measured in a w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61559d43bd26e7cb6a8dd55606808429
https://doi.org/10.1134/s1063783415060311
https://doi.org/10.1134/s1063783415060311
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Based on the least squares method which is arranged to the problem of fitting theoretical to experimental measured variables, such as phase velocities of acoustic waves and/or resonant frequencies, the environment of the minimum sum of squares (SSQ)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e59eab590d5a493e00a3e04854749293
https://doi.org/10.1109/ultsym.2017.8092822
https://doi.org/10.1109/ultsym.2017.8092822
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b90452ba5990a4debc4ce791f507aae
https://doi.org/10.1109/ultsym.2017.8092688
https://doi.org/10.1109/ultsym.2017.8092688