Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Jyrki Ollila"'
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 66, Iss No 2, Pp 361-367 (2020)
VTT Technical Research Centre of Finland Ltd. has developed and utilized Low Temperature Co-fired Ceramic (LTCC) technology for about 25 years. This paper presents our activities related to photonics and millimetre-waves, including also a relevant li
Externí odkaz:
https://doaj.org/article/fbc97ea49b084b639f33899645bddfcc
Publikováno v:
Polymers, Vol 14, Iss 9, p 1863 (2022)
Printed flexible hybrid electronics (FHE) is finding an increasing number of applications in the fields of displays, sensors, actuators and in energy harvesting and storage. The technology involves the printing of conductive and insulating patterns a
Externí odkaz:
https://doaj.org/article/2447c1f656ec495a8f0bf6b711e6838d
Autor:
Janne Lyytinen, Petri Tikka, Jukka Koskinen, Mikko Karppinen, Jyrki Ollila, Daria Nikolaeva, Sergey Bender
Publikováno v:
Lyytinen, J, Tikka, P, Koskinen, J, Karppinen, M, Ollila, J, Nikolaeva, D & Bender, S 2023, ' Development of the optical remote handling connector for ITER Divertor Operational Instrumentation ', Fusion Engineering and Design, vol. 194, 113735 . https://doi.org/10.1016/j.fusengdes.2023.113735
Lyytinen, J, Tikka, P, Koskinen, J, Karppinen, M, Ollila, J, Nikolaeva, D & Bender, S 2022, ' Development of the optical remote handling connector for ITER Divertor Operational Instrumentation ', 32nd Symposium on Fusion Technology. SOFT 2022, Dubrovnik, Croatia, 18/09/22-23/09/22 pp. P-1.76 .
Lyytinen, J, Tikka, P, Koskinen, J, Karppinen, M, Ollila, J, Nikolaeva, D & Bender, S 2022, ' Development of the optical remote handling connector for ITER Divertor Operational Instrumentation ', 32nd Symposium on Fusion Technology. SOFT 2022, Dubrovnik, Croatia, 18/09/22-23/09/22 pp. P-1.76 .
Divertor Operational Instrumentation (DOI) measures mechanical, electromagnetics and thermal parameters of the ITER Divertor Cassettes. The maintenance of the Cassettes requires their periodic removal and replacement by remote handling tools. The rem
Autor:
Hannu Sääskilahti, Jari Rekilä, Kirsi Immonen, Marja Välimäki, Enni Luoma, Jyrki Ollila, Teijo Rokkonen
Publikováno v:
Luoma, E, Välimäki, M, Rokkonen, T, Sääskilahti, H, Ollila, J, Rekilä, J & Immonen, K 2021, ' Oriented and annealed poly(lactic acid) films and their performance in flexible printed and hybrid electronics ', Journal of Plastic Film and Sheeting, vol. 37, no. 4, pp. 429-462 . https://doi.org/10.1177/8756087920988569
Flexible and hybrid electronics (FHE) are widely utilized from wearable to automotive applications. Instead of commonly used poly(ethylene terephthalate) (PET) film, bio-based and biodegradable polymer, poly(lactic acid) (PLA), is a most promising no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f727225a62e30e9bd7b5ac5ed3883589
https://cris.vtt.fi/en/publications/a39d4c2e-c74a-45ef-b16f-fda8c8b50426
https://cris.vtt.fi/en/publications/a39d4c2e-c74a-45ef-b16f-fda8c8b50426
Autor:
Jyrki Ollila, Jussi Hiltunen, Johanna Hiitola-Keinänen, Pentti Korhonen, Olli Heikki Huttunen, Tuomas Happonen
Publikováno v:
Huttunen, O H, Happonen, T, Hiitola-Keinänen, J, Korhonen, P, Ollila, J & Hiltunen, J 2019, ' Roll-To-Roll Screen-Printed Silver Conductors on a Polydimethyl Siloxane Substrate for Stretchable Electronics ', Industrial and Engineering Chemistry Research, vol. 58, no. 43, pp. 19909-19916 . https://doi.org/10.1021/acs.iecr.9b03628
Stretchable electronics has attracted much interest recently because of its potential applications in the area of wearable electronics and healthcare. Highly elastic polydimethyl siloxane (PDMS) has been for decades a widely used material in prototyp
Autor:
Marja Välimäki, Teijo Rokkonen, Heidi Peltola, Jyrki Ollila, Sami Ihme, Timo Kurkela, Arttu Korhonen, Jukka Hast, Laura Sokka
Publikováno v:
Välimäki, M K, Sokka, L I, Peltola, H B, Ihme, S S, Rokkonen, T M J, Kurkela, T J, Ollila, J T, Korhonen, A T & Hast, J T 2020, ' Printed and hybrid integrated electronics using bio-based and recycled materials—increasing sustainability with greener materials and technologies ', International Journal of Advanced Manufacturing Technology, vol. 111, pp. 325–339 . https://doi.org/10.1007/s00170-020-06029-8
Printed and hybrid integrated electronics produced from recycled and renewable materials can reduce the depletion of limited material resources while obtaining energy savings in small electronic applications and their energy storage. In this work, bi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c38a0913e6777d062c073f6c5a41c1e
https://cris.vtt.fi/en/publications/8873ea98-e517-46e0-ae2d-9c2516b2ef18
https://cris.vtt.fi/en/publications/8873ea98-e517-46e0-ae2d-9c2516b2ef18
Autor:
Mikko Karppinen, Christian Larsen, P. Ostrovskyy, J. B. Gonzalez, Norbert Venet, Minsu Ko, Mickael Faugeron, Rashid Safaisini, Anaelle Maho, Leontios Stampoulidis, Antti Tanskanen, Efstratios Kehayas, Dietmar Kissinger, Michel Sotom, I. McKenzie, Johan S. Gustavsson, Anders Larsson, Jyrki Ollila, Lars Gruner-Nielsen, Roger King
Publikováno v:
Stampoulidis, L, Kehayas, E, Karppinen, M, Tanskanen, A, Ollila, J, Gustavsson, J, Larsson, A, Grϋner-Nielsen, L, Larsen, C, Sotom, M, Maho, A, Faugeron, M, Venet, N, Ko, M, Ostrovskyy, P, Kissinger, D, Safaisini, R, King, R, McKenzie, I & Barbero Gonzalez, J 2019, High-speed, low-power and board-mountable optical transceivers for scalable and energy efficient advanced on-board digital processors . in Z Sodnik, N Karafolas & B Cugny (eds), International Conference on Space Optics, ICSO 2018 ., 111804C, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 11180, 12th International Conference on Space Optics, ICSO 2018, Crete, Greece, 9/10/18 . https://doi.org/10.1117/12.2536075
We present the development and verification testing of a high speed multimode, multicore transceiver technology for intra-satellite optical interconnects. We report the fabrication and functional testing of opto-parts including 25 Gb/s 850 nm VCSEL/P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a3cefcc144eee53abf4f7fecc8ff9fc
https://cris.vtt.fi/en/publications/43d0ac8e-56e8-41ce-b987-3cfc9dba5c14
https://cris.vtt.fi/en/publications/43d0ac8e-56e8-41ce-b987-3cfc9dba5c14
Autor:
Leontios Stampoulidis, Michel Sotom, Rashid Safaisini, Christian Larsen, Johan S. Gustavsson, Dietmar Kissinger, Lars Gruner-Nielsen, Anders Larsson, Jyrki Ollila, Minsu Ko, Antti Tanskanen, Anaelle Maho, Mikko Karppinen
Publikováno v:
Optical Interconnects XVIII.
Multicore fiber enables a parallel optic data link in a single optical fiber. Thus, it is an attractive approach to increase the aggregate data throughput and the integration density of the interconnection. We developed and demonstrated mid-board opt
Autor:
Marcin Ratajczyk, Rafal Kasztelanic, Noora Heinilehto, Jyrki Ollila, Jukka Viheriälä, Przemyslaw Kalinowski, Mircea Guina, Lars Borgen, Mikko Harjanne, Tomi Salo, Paweł Kluczyński, Matteo Cherchi, Sami Virtanen, Teemu Alajoki, Soile Suomalainen, Heidi Tuorila, Ryszard Buczynski, Pentti Karioja, Nouman Zia
Publikováno v:
Karioja, P, Alajoki, T, Cherchi, M, Ollila, J, Harjanne, M, Heinilehto, N, Suomalainen, S, Zia, N, Tuorila, H, Viheriälä, J, Guina, M, Buczynski, R, Kasztelanic, R, Salo, T, Virtanen, S, Kluczynski, P, Borgen, L, Ratajczyk, M & Kalinowski, P 2018, Integrated multi-wavelength Mid-IR light source for gas sensing . in M A Druy, S M Barnett, L T M Profeta, R A Crocombe & A K Azad (eds), Next-Generation Spectroscopic Technologies XI ., 106570A, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 10657, Next-Generation Spectroscopic Technologies XI, Orlando, Florida, United States, 16/04/18 . https://doi.org/10.1117/12.2305712
Next-Generation Spectroscopic Technologies XI
Next-Generation Spectroscopic Technologies XI
Cost effective multi-wavelength light sources are key enablers for spectroscopic applications at Mid-IR wavelength range. Utilizing a novel Mid-IR Si-based photonic integrated circuit filter and wide-band Mid-IR SLEDs, we show the concept of a light
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b75d54f8fe1db75539f416b0737627d
https://cris.vtt.fi/en/publications/3a4bee1d-e2c4-4d0a-b041-2b804f8f0a91
https://cris.vtt.fi/en/publications/3a4bee1d-e2c4-4d0a-b041-2b804f8f0a91
Autor:
Matteo Cherchi, Antonio Malacarne, Mikko Karppinen, Mikko Harjanne, Timo Aalto, Christian Neumeyr, Aila Sitomaniemi, Jyrki Ollila
Publikováno v:
Aalto, T, Harjanne, M, Karppinen, M, Cherchi, M, Sitomaniemi, A, Ollila, J, Malacarne, A & Neumeyr, C 2018, Optical interconnects based on VCSELs and low-loss silicon photonics . in Optical Interconnects XVIII ., 1053816, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 10538, Optical Interconnects XVIII 2018, San Francisco, United States, 29/01/18 . https://doi.org/10.1117/12.2290710
Silicon photonics with micron-scale Si waveguides offers most of the benefits of submicron SOI technology while avoiding most of its limitations. In particular, thick silicon-on-insulator (SOI) waveguides offer 0.1 dB/cm propagation loss, polarizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::495a6f3083a4b61a39511973ce98dfaf
https://doi.org/10.1117/12.2290710
https://doi.org/10.1117/12.2290710