Zobrazeno 1 - 10
of 345
pro vyhledávání: '"Leena Ukkonen"'
Publikováno v:
Proceedings of the XXth Conference of Open Innovations Association FRUCT, Vol 36, Iss 1, Pp 817-823 (2024)
The electrochemical analysis is one of the most popular implementations of a dopamine-sensing brain implant. Its performance depends significantly on the interaction between the dopamine molecule and the working electrode. Carbon nanofiber is an allo
Externí odkaz:
https://doaj.org/article/bd67e33b318943b0a6309ce81134f71b
Autor:
Asimina Kiourti, Amin M. Abbosh, Maria Athanasiou, Toni Bjorninen, Aline Eid, Cynthia Furse, Koichi Ito, Gianluca Lazzi, Mohamed Manoufali, Matteo Pastorino, Manos M. Tentzeris, Katrina Tisdale, Erdem Topsakal, Leena Ukkonen, William G. Whittow, Huanan Zhang, Konstantina S. Nikita
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 363-390 (2022)
Rapid advances in antennas, propagation, electromagnetics, and materials are opening new and unexplored opportunities in body area sensing and stimulation. Next-generation wearables and implants are seamlessly providing round-the-clock monitoring. In
Externí odkaz:
https://doaj.org/article/97577f91a45c43d5878ad3b9e38d0bf7
Autor:
Kai Kordelin, Johanna Virkki, Jaana Kordelin, Juhani Norokallio, Jari Heikkinen, Jyrki Liimatainen, Leena Ukkonen, Lauri Sydänheimo
Publikováno v:
International Journal of Geophysics, Vol 2023 (2023)
This research work is aimed at studying different rock types and the effect of their mineral contents on an active 434 MHz RFID card’s radio signal attenuation. This research was done at the ONKALO nuclear waste storage facility using radio frequen
Externí odkaz:
https://doaj.org/article/3205560ef41149c9a4805fb6856b0aa8
Publikováno v:
IEEE Access, Vol 9, Pp 77229-77238 (2021)
We present a quasi-Yagi antenna mounted on a periodic surface for a wearable UHF RFID reader operating in the UHF RFID frequency band centered at 915 MHz. The periodic surface was co-optimized with the antenna to enhance the launching of surface wave
Externí odkaz:
https://doaj.org/article/da5bbf1fb69745bebf174e4c7e69360b
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
We present a meandered triple-band planar-inverted-F antenna (PIFA) for integration into brain-implantable biotelemetric systems. The target applications are wireless data communication, far-field wireless power transfer, and switching control betwee
Externí odkaz:
https://doaj.org/article/dbac15dfabea43cb84f23a5fc041b5f1
Publikováno v:
International Journal of Antennas and Propagation, Vol 2020 (2020)
Externí odkaz:
https://doaj.org/article/0b2519c8ca044c21acccd8a86b2e34e3
Publikováno v:
International Journal of Antennas and Propagation, Vol 2020 (2020)
Externí odkaz:
https://doaj.org/article/887c17474b3748e4add1baf4eda203c7
Publikováno v:
Journal of Engineering, Vol 2020 (2020)
Externí odkaz:
https://doaj.org/article/06a4d16149894c668b340d381666d1b8
Autor:
Roy B. V. B. Simorangkir, Yang Yang, Raheel M. Hashmi, Toni Bjorninen, Karu P. Esselle, Leena Ukkonen
Publikováno v:
IEEE Access, Vol 6, Pp 48102-48112 (2018)
We present our study on polydimethylsiloxane (PDMS)-embedded conductive fabric, which we propose as a simple yet effective solution to the challenging issue of poor PDMS-metal adhesion, allowing for a relatively easy realization of robust flexible an
Externí odkaz:
https://doaj.org/article/963d703037344a10a3fd82ab1dc0c78b
Autor:
Anindya Nag, Roy B. V. B. Simorangkir, Elizabeth Valentin, Toni Bjorninen, Leena Ukkonen, Raheel M. Hashmi, Subhas Chandra Mukhopadhyay
Publikováno v:
IEEE Access, Vol 6, Pp 71020-71027 (2018)
In this paper, we present a new approach to realize flexible transparent strain sensors. It combines the use of transparent conductive fabric with polydimethylsiloxane (PDMS) through a simple and straightforward layer-by-layer assembly process. The c
Externí odkaz:
https://doaj.org/article/8d9eed682ad84615ad5fbb0f2a9a37ee