Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Hannu Pekka Hedman"'
Autor:
Mikhail Kuzmin, Juha-Pekka Lehtiö, Zahra Jahanshah Rad, Svetlana V. Sorokina, Marko P. J. Punkkinen, Hannu-Pekka Hedman, Risto Punkkinen, Pekka Laukkanen, Kalevi Kokko
Publikováno v:
ACS Materials Au, Vol 2, Iss 2, Pp 204-214 (2021)
Externí odkaz:
https://doaj.org/article/f63dccdced084190a21772491368fcdc
Autor:
Jaan Praks, Arttu Punkkinen, Hannu Leppinen, Risto Punkkinen, Petri Niemelä, Nemanja Jovanovic, Andris Slavinskis, Petri Toivanen, Philipp Oleynik, Hannu Pekka Hedman, M. Rizwan Mughal, Tuomas Tikka, Antti Näsilä, Rami Vainio, S. Nyman, Bagus Riwanto, J. M.K. Slotte, Jan Gieseler, J. O. Lill, Jouni Envall, Pekka Janhunen
Publikováno v:
Mughal, M R, Praks, J, Vainio, R, Janhunen, P, Envall, J, Näsilä, A, Oleynik, P, Niemelä, P, Nyman, S, Slavinskis, A, Gieseler, J, Jovanovic, N, Riwanto, B, Toivanen, P, Leppinen, H, Tikka, T, Punkkinen, A, Punkkinen, R, Hedman, H P, Lill, J O & Slotte, J M K 2021, ' Aalto-1, multi-payload CubeSat : In-orbit results and lessons learned ', Acta Astronautica, vol. 187, pp. 557-568 . https://doi.org/10.1016/j.actaastro.2020.11.044
The in-orbit results and lessons learned of the first Finnish satellite Aalto-1 are briefly presented in this paper. Aalto-1, a three-unit CubeSat which was launched in June 2017, performed AaSI (Aalto Spectral Imager), Radiation Monitor (RADMON), an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb0240ca7b083aa29eaea94d5dfb6a8a
https://cris.vtt.fi/en/publications/ec0876e3-87e5-4e12-9d41-100822466e0c
https://cris.vtt.fi/en/publications/ec0876e3-87e5-4e12-9d41-100822466e0c
Autor:
Petri Niemelä, Risto Punkkinen, T. Peltola, Jaan Praks, Hannu Leppinen, Gabriel Jörg Schwarzkopf, Hannu Pekka Hedman, A. Bosser, Arttu Punkkinen, Nemanja Jovanovic, Antti Näsilä, Tuomas Tikka, J. M.K. Slotte, J. O. Lill, M. Rizwan Mughal, Jan Gieseler, Rami Vainio, Ari Virtanen, Jouni Envall, Heikki Kettunen, Bagus Riwanto, Petri Toivanen, Tero Säntti, Philipp Oleynik, Andris Slavinskis, A. Kestilä, Pekka Janhunen
Publikováno v:
Praks, J, Mughal, M R, Vainio, R, Janhunen, P, Envall, J, Oleynik, P, Näsilä, A, Leppinen, H, Niemelä, P, Slavinskis, A, Gieseler, J, Toivanen, P, Tikka, T, Peltola, T, Bosser, A, Schwarzkopf, G, Jovanovic, N, Riwanto, B, Kestilä, A, Punkkinen, A, Punkkinen, R, Hedman, H P, Säntti, T, Lill, J O, Slotte, J M K, Kettunen, H & Virtanen, A 2021, ' Aalto-1, multi-payload CubeSat : Design, integration and launch ', Acta Astronautica, vol. 187, pp. 370-383 . https://doi.org/10.1016/j.actaastro.2020.11.042
The design, integration, testing, and launch of the first Finnish satellite Aalto-1 is briefly presented in this paper. Aalto-1, a three-unit CubeSat, launched into Sun-synchronous polar orbit at an altitude of approximately 500 km, is operational si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55b99c83000e861810bacecc26274663
https://aaltodoc.aalto.fi/handle/123456789/110888
https://aaltodoc.aalto.fi/handle/123456789/110888
Autor:
Zahra Jahanshah Rad, Juha-Pekka Lehtiö, Kexun Chen, Iris Mack, Ville Vähänissi, Mikko Miettinen, Marko Punkkinen, Risto Punkkinen, Petri Suomalainen, Hannu-Pekka Hedman, Mikhail Kuzmin, Jekaterina Kozlova, Mihkel Rähn, Aile Tamm, Hele Savin, Pekka Laukkanen, Kalevi Kokko
Publikováno v:
Vacuum. 202:111134
Growing SiO2 layer by wet-chemical oxidation of Si surfaces before growth of another insulating film(s) is a used method to passivate Si interfaces in applications (e.g., solar cell, photodiode) at low temperatures (LT) below 450 oC. We report on pot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec6bb7dc5729876a5bfe3d6125f61d01
https://doi.org/10.1016/j.vacuum.2022.111134
https://doi.org/10.1016/j.vacuum.2022.111134
Autor:
Pekka Laukkanen, Marko Patrick John Punkkinen, Kalevi Kokko, Ismo T.S. Rauha, Juha-Pekka Lehtiö, Hannu-Pekka Hedman, S. Granroth, Hele Savin, Muhammad Yasir, Risto Punkkinen, Zahra Jahanshah Rad, Jean-Pascal Rueff
Publikováno v:
Advanced Electronic Materials
Advanced Electronic Materials, Wiley, In press, ⟨10.1002/aelm.202100034⟩
Advanced Electronic Materials, Wiley, In press, ⟨10.1002/aelm.202100034⟩
Lataa OA-julkaisu, kun saatavilla. Abstract Negative static charge and induced internal electric field have often been observed in the interfaces between silicon and high-? dielectrics, for example Al2O3 and HfO2. The electric field provides either b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::529adecb4c4003abc4e8abccb4b6958d
https://hal.sorbonne-universite.fr/hal-03180431
https://hal.sorbonne-universite.fr/hal-03180431
Autor:
Pekka Laukkanen, Marko Patrick John Punkkinen, Zahra Jahanshah Rad, Mikhail Kuzmin, Iris Mack, Ville Vähänissi, Andrei Pavlov, Kalevi Kokko, Kexun Chen, Hele Savin, Hannu-Pekka Hedman, Kawa Rosta, Juha-Pekka Lehtiö, Risto Punkkinen
Publikováno v:
ACS applied materialsinterfaces. 12(41)
Low-temperature (LT) passivation methods ( 700oC). Therefore, the LT passivation of SiOx/Si has been, since long, a research topic to improve applications performance. Here, we demonstrate that a LT (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1bd689741d0a922fb03bee001692365
https://pubmed.ncbi.nlm.nih.gov/32960564
https://pubmed.ncbi.nlm.nih.gov/32960564
Autor:
J. Peltonen, Syed Rameez Ullah Kakakhel, Arttu Punkkinen, Minna Palmroth, Rami Vainio, Jarno Tuominen, Jaan Praks, Andris Slavinskis, Risto Punkkinen, Hannu-Pekka Hedman, L. Salomaa, Hannu Tenhunen, Philipp Oleynik, Jani Tammi, Juha Plosila, Emilia Kilpua, Tomi Westerlund, Alexandre Bosser, Pekka Janhunen, Pasi Virtanen, Tero Säntti
The Particle Telescope (PATE) of FORESAIL-1 mission is described. FORESAIL-1 is a CubeSat mission to polar Low Earth Orbit. Its scientific objectives are to characterize electron precipitation from the radiation belts and to observe energetic neutral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e8f34acbd51b363838867a6d99a6808
https://aaltodoc.aalto.fi/handle/123456789/111168
https://aaltodoc.aalto.fi/handle/123456789/111168
Autor:
Risto Punkkinen, Edward Hæggström, Eino Valtonen, Rami Vainio, Jaan Praks, Heli Hietala, Hannu-Pekka Hedman, Philipp Oleynik, J. Peltonen, Petri Niemelä, Jan Gieseler, Oleksiy Dudnik, Tero Säntti, Arttu Punkkinen
RADMON is a small radiation monitor designed and assembled by students of the University of Turku and the University of Helsinki. It is flown on-board Aalto-1, a 3-unit CubeSat in low Earth orbit at about 500 km altitude. The detector unit of the ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd69f03dc003fecb845cc45a9cf29ded
https://aaltodoc.aalto.fi/handle/123456789/42159
https://aaltodoc.aalto.fi/handle/123456789/42159
Autor:
Hannu-Pekka Hedman, Mircea Guina, Muhammad Yasir, Johnny Dahl, Mikhail Kuzmin, Ville Polojärvi, Roberto Félix, Jari Lyytikäinen, S. Granroth, Jaakko Mäkelä, Risto Punkkinen, Marko Patrick John Punkkinen, Kalevi Kokko, Marjukka Tuominen, Mikko Laitinen, Juha-Pekka Lehtiö, Pekka Laukkanen, Antti Tukiainen
InAs crystals are emerging materials for various devices like radio frequency transistors and infrared sensors. Control of oxidation-induced changes is essential for decreasing amounts of the harmful InAs surface (or interface) defects because it is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc9d1d4756f61ad8d942d8cb5b54bf40
https://trepo.tuni.fi/handle/10024/126796
https://trepo.tuni.fi/handle/10024/126796
Autor:
Marjukka, Tuominen, Jaakko, Mäkelä, Muhammad, Yasir, Johnny, Dahl, Sari, Granroth, Juha-Pekka, Lehtiö, Roberto, Félix, Pekka, Laukkanen, Mikhail, Kuzmin, Mikko, Laitinen, Marko P J, Punkkinen, Hannu-Pekka, Hedman, Risto, Punkkinen, Ville, Polojärvi, Jari, Lyytikäinen, Antti, Tukiainen, Mircea, Guina, Kalevi, Kokko
Publikováno v:
ACS applied materialsinterfaces. 10(51)
InAs crystals are emerging materials for various devices like radio frequency transistors and infrared sensors. Control of oxidation-induced changes is essential for decreasing amounts of the harmful InAs surface (or interface) defects because it is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3796df83fb01b92c3175f110c66c2ad9
https://pubmed.ncbi.nlm.nih.gov/30508372
https://pubmed.ncbi.nlm.nih.gov/30508372