Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Tappura, Kirsi"'
Autor:
Cherchi, Matteo, Bera, Arijit, Kemppinen, Antti, Nissilä, Jaani, Tappura, Kirsi, Caputo, Marco, Lehtimäki, Lauri, Lehtinen, Janne, Govenius, Joonas, Hassinen, Tomi, Prunnila, Mika, Aalto, Timo
Photonic integrated circuits (PICs) are expected to play a significant role in the ongoing second quantum revolution, thanks to their stability and scalability. Still, major upgrades are needed for available PIC platforms to meet the demanding requir
Externí odkaz:
http://arxiv.org/abs/2201.04715
Autor:
Kamada, Masahiro, Zeng, Weijun, Laitinen, Antti, Sarkar, Jayanta, Yeh, Sheng-Shiuan, Tappura, Kirsi, Seppä, Heikki, Hakonen, Pertti
Low frequency resistance variations due to mobility fluctuations is one of the key factors of $1/f$ noise in metallic conductors. According to theory, such noise in a two-dimensional (2D) device can be suppressed to zero at small magnetic fields, imp
Externí odkaz:
http://arxiv.org/abs/2112.11933
Autor:
Kamada, Masahiro, Laitinen, Antti, Zeng, Weijun, Will, Marco, Sarkar, Jayanta, Tappura, Kirsi, Seppä, Heikki, Hakonen, Pertti
Low-frequency $1/f^{\gamma}$ noise is ubiquitous, even in high-end electronic devices. For qubits such noise results in decrease of their coherence times. Recently, it was found that adsorbed O$_2$ molecules provide the dominant contribution to flux
Externí odkaz:
http://arxiv.org/abs/2106.12452
Autor:
Varpula, Aapo, Tappura, Kirsi, Tiira, Jonna, Grigoras, Kestutis, Kilpi, Olli-Pekka, Sovanto, Kuura, Ahopelto, Jouni, Prunnila, Mika
Publikováno v:
APL Photon. 6 (2021) 036111
Infrared (IR) radiation detectors are used in numerous applications from thermal imaging to spectroscopic gas sensing. Obtaining high speed and sensitivity, low-power operation and cost-effectiveness with a single technology remains to be a challenge
Externí odkaz:
http://arxiv.org/abs/1912.12868
Autor:
Tappura, Kirsi, Juntunen, Taneli, Jaakkola, Kaarle, Ruoho, Mikko, Tittonen, Ilkka, Ritasalo, Riina, Pudas, Marko
Publikováno v:
Renewable Energy 147 (2020) 1292-1298
A large-area thermoelectric generator (TEG) utilizing a folded thin-film concept is implemented and the performance evaluated for near room temperature applications having modest temperature gradients (< 50 K). The TEGs with the area of ~0.33 m^2 are
Externí odkaz:
http://arxiv.org/abs/1909.12042
Akademický článek
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Autor:
Jaakkola, Kaarle, Tappura, Kirsi
Publikováno v:
IEEE Sensors Journal, Year: 2018, Volume: 18, Issue: 17, Pages: 7193 - 7202
Exploitation of transparent conductive oxides (TCO) to implement an energy-autonomous sensor node for a wireless sensor network (WSN) is studied and a practical solution presented. In the practical implementations, flexible and rigid substrates that
Externí odkaz:
http://arxiv.org/abs/1901.02699
Autor:
Tappura, Kirsi
Publikováno v:
Renewable Energy 120 (2018) 78-87
Thin-film thermoelectric generators with a novel folding scheme are proposed for large-area, low energy-density applications. Both the electrical current and heat transfer are in the plane of the thermoelectric thin-film, yet the heat transfer is acr
Externí odkaz:
http://arxiv.org/abs/1801.06418
Autor:
Tappura, Kirsi, Juntunen, Taneli, Jaakkola, Kaarle, Ruoho, Mikko, Tittonen, Ilkka, Ritasalo, Riina, Pudas, Marko
Publikováno v:
In Renewable Energy March 2020 147 Part 1:1292-1298
Akademický článek
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