Výsledky vyhledávání - "Meltaus, Johanna"

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Acoustic Phonon Tunneling and Heat Transport due to Evanescent Electric Fields

Publikováno v: Phys. Rev. Lett. 105, 125501 (2010)

The authors describe how acoustic phonons can directly tunnel through vacuum and, therefore, transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezo

Externí odkaz: http://arxiv.org/abs/1003.1408

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Laterally coupled bulk acoustic wave filter with improved passband characteristics

Autor: Meltaus, Johanna, Pensala, Tuomas

Publikováno v: Meltaus, J & Pensala, T Oct. 23 2014, Laterally coupled bulk acoustic wave filter with improved passband characteristics, Patent No. US2014312994 .

The invention relates to a laterally coupled bulk acoustic wave (LBAW) filter comprising a vibration layer for carrying bulk acoustic waves, electrode means comprising a first electrode coupled to the vibration layer for exciting to the vibration lay

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::2858cb760b0877fc2142a672a44d6a88
https://cris.vtt.fi/en/publications/1dc04981-5538-4b31-b992-f38b94030b8d

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Wide-band acoustically coupled thin-film BAW filter

Autor: Meltaus, Johanna, Pensala, Tuomas

Publikováno v: Meltaus, J & Pensala, T Feb. 27 2013, Wide-band acoustically coupled thin-film BAW filter, Patent No. EP2561613 .

In a bulk acoustic wave (BAW) filter based on laterally acoustically coupled resonators on piezoelectric thin films, one can utilize two distinct acoustic plate wave modes of different nature, for example the thickness extensional (longitudinal) TE1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::ae708f6342a6162c0c0c6efc4688e462
https://cris.vtt.fi/en/publications/0ecb91fa-45c8-4b4d-af96-e2722d55f00c

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A micromechanical resonator

Autor: Oja, Aarne, Pensala, Tuomas, Meltaus, Johanna

Publikováno v: Oja, A, Pensala, T & Meltaus, J Aug. 08 2012, A micromechanical resonator, Patent No. EP2484008 .

The invention relates to a micromechanical resonator comprising a substrate (1) of first material (2), a resonator (3) suspended to the supporting structure (1), the resonator (3) being at least partially of the same material (2) as the supporting st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::3a2bd4c7f6235cbe54777b1eb48f970d
https://cris.vtt.fi/en/publications/11dbeb07-9d05-4c7a-82ef-b5635ebb540a

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Method of manufacturing laterally coupled BAW thin films

Autor: Meltaus, Johanna, Pensala, Tuomas, Ylilammi, Markku, Riekkinen, Tommi, Mattila, Tomi

Publikováno v: Meltaus, J, Pensala, T, Ylilammi, M, Riekkinen, T & Mattila, T Apr. 12 2012, Method of manufacturing laterally coupled BAW thin films, Patent No. US2012086523 .

The invention describes a manufacturing method for an acoustic balanced-unbalanced (balun) or balanced-balanced thin-film BAW filter based on lateral acoustic coupling. In laterally acoustically coupled thin-film BAW filters (LBAW) one can realize tr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::9ca82954d18fb7fedc602a12e38d1eca
https://cris.vtt.fi/en/publications/e3516f91-134d-482a-894f-bb8d0e9ff971

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Acoustic phonon transmission and heat conduction through vacuum

Autor: Prunnila, Mika, Meltaus, Johanna

Publikováno v: Prunnila, M & Meltaus, J 2011, Acoustic phonon transmission and heat conduction through vacuum . in Proceedings of Phononics 2011, Paper Phononics-2011-0109, Santa Fe, New Mexico, USA, May 29-June 2, 2011 . pp. 220-221, 1st International Conference on Phononic Crystals, Metamaterials and Optomechanics, Phononics 2011, Santa Fe, New Mexico, United States, 29/05/11 . < https://phononics2011.phononics.org/conf/public/conferences/1/Phononics_2011_Proceedings_Track_4_195_244.pdf >

We describe theoretically how acoustic phonons can directly transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezoelectricity, that strongly couple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::7fdaa62fb026f47524c169607b717271
https://cris.vtt.fi/en/publications/31fb4f2f-e1dd-4317-ae04-1b5ac1cedfa8

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