Research Output

2010

Uncertainty estimate of a split-core Rogowski coil for high AC current

Suomalainen, E. P. & Hällström, J., 21 Sep 2010, 2010 Conference on Precision Electromagnetic Measurements, CPEM 2010. IEEE Institute of Electrical and Electronic Engineers, p. 653-654 2 p. 5544844

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)
2009

Experimental investigation of hybrid single-electron turnstiles with high charging energy

Kemppinen, A., Kafanow, S., Pashkin, Y. A., Tsai, J. S., Averin, D. V. & Pekola, J. P., 2009, In : Applied Physics Letters. 94, 17, 3 p.

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)
Open Access

Interaction-time-averaged optical pumping in alkali-metal-atom Doppler spectroscopy

Lindvall, T. & Tittonen, I., 9 Sep 2009, In : Physical Review A - Atomic, Molecular, and Optical Physics. 80, 3, 032505.

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Pumping properties of the hybrid single-electron transistor in dissipative environment

Lotkhov, S. V., Kemppinen, A., Kafanov, S., Pekola, J. P. & Zorin, A. B., 2009, In : Applied Physics Letters. 95, 11, 3 p.

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Quantized current of a hybrid single-electron transistor with superconducting leads and a normal-metal island

Kemppinen, A., Meschke, M., Möttönen, M., Averin, D. V. & Pekola, J. P., 2009, In : European Physical Journal: Special Topics. 172, 1, p. 311-321

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Single-electronic radio-frequency refrigerator

Kafanov, S., Kemppinen, A., Pashkin, Y. A., Meschke, M., Tsai, J. S. & Pekola, J. P., 2009, In : Physical Review Letters. 103, 4 p., 120801.

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)
2008

Suppression of the critical current of a balanced superconducting quantum interference device

Kemppinen, A., Manninen, A. J., Möttönen, M., Vartiainen, J. J., Peltonen, J. T. & Pekola, J. P., 2008, In : Applied Physics Letters. 92, 5, 3 p., 052110.

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)
2007

Construction and performance evaluation of calibration system for low voltage impulse

Wakimoto, T., Shimizu, H., Ishii, M., Hällström, J. & Lucas, W., 2007, In : IEEJ Transactions on Power and Energy. 127, 1, p. 261-266

Research output: Contribution to journalArticleScientificpeer-review

Open Access
4 Citations (Scopus)

Effect of optical pumping on alkali-atom Doppler-limited spectra

Lindvall, T. & Tittonen, I., 1 Dec 2007, In : Journal of Modern Optics. 54, 18, p. 2779-2793

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Electrical stability of a MEMS-based AC voltage reference

Kärkkäinen, A., Tisnek, N., Manninen, A., Pesonen, N., Oja, A. S. & Seppä, H., 2007, In : Sensors and Actuators A: Physical. 137, 1, p. 169-174

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
Open Access

High-accuracy comparison of lightning and switching impulse calibrators

Wakimoto, T., Hällström, J. K., Chekurov, Y., Ishii, M., Lucas, W., Piiroinen, J. & Shimizu, H., 2007, In : IEEE Transactions on Instrumentation and Measurement. 56, 2, p. 619-623

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Microelectromechanical components in electrical metrology

Manninen, A., Kärkkäinen, A., Pesonen, N., Oja, A. & Seppä, H., 2007, 21 p.

Research output: Book/ReportReport

Open Access

Millimeter wave engineering of distributed Josephson junction arrays

Hassel, J., Grönberg, L., Helistö, P., Seppä, H., Nissilä, J. & Manninen, A., 2007, In : IEEE Transactions on Applied Superconductivity. 17, 2, p. 930-933

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Nanoampere pumping of Cooper pairs

Vartiainen, J. J., Möttönen, M., Pekola, J. P. & Kemppinen, A., 2007, In : Applied Physics Letters. 90, 8, 082102.

Research output: Contribution to journalArticleScientificpeer-review

40 Citations (Scopus)

Worldwide comparison of lightning impulse voltage measuring systems at the 400-kV level

Hällstrom, J., Aro, M., Bergman, A., Bovier-Lapierre, V., Garnacho, F., Juvik, J. I., Kiseliev, V., Lian Hong, Z., Lucas, W., Li, Y., Pykälä, M. L., Rungis, J., Schon, K. & Truong, V. H., 2007, In : IEEE Transactions on Instrumentation and Measurement. 56, 2, p. 388-391

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
2006

Trapping atoms on a transparent permanent-magnet atom chip

Shevchenko, A., Heiliö, M., Lindvall, T., Jaakkola, A., Tittonen, I., Kaivola, M. & Pfau, T., 15 May 2006, In : Physical Review A - Atomic, Molecular, and Optical Physics. 73, 5, 051401.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Yleismittarin vertailumittaus: Loppuraportti

Rajala, R., 2006, Espoo: Centre of Metrology and Accreditation. 42 p. (MIKES Julkaisu; No. J9/2006).

Research output: Book/ReportReport

Open Access
2005

AC voltage standard based on an externally-shunted SIS Josephson junction array

Kemppinen, A., Nissilä, J., Ojasalo, K., Hassel, J., Manninen, A., Helistö, P. & Seppä, H., 2005, Extended abstracs of 10th international superconductive electronics conference (ISEC 2005). P-K.12

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Comparison EUROMET.EM-K8 of DC voltage ratio: Results

Marullo-Reedtz, G., Cerri, R., Waldmann, W., Streit, J., Immonen, P., Blanc, I., Raso, F., Funck, T., Schumacher, B., Dierikx, E. F., Nunes, M., Vrabček, P., Rudohradský, D., Gunnarsson, O., Rydler, K. E., Jeanneret, B., Jeckelmann, B., Pulfer, T., Turhan, S. S., Yilmaz, O. & 7 others, Williams, J. M., Slinde, H., Lind, K., Nicolas, J., Lindic, M., Flouda, E. & Erdos, G., 1 Apr 2005, In : IEEE Transactions on Instrumentation and Measurement. 54, 2, p. 576-579 4 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Comparison of two impulse calibrators with a high-resolution digitizer

Yi, L., Hällström, J. K. & Lucas, W., 2005, In : IEEE Transactions on Instrumentation and Measurement. 54, 2, p. 608-611

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

MEMS-based AC voltage reference

Kärkkäinen, A., Pesonen, N., Suhonen, M., Oja, A. S., Manninen, A., Tisnek, N. & Seppä, H., 2005, In : IEEE Transactions on Instrumentation and Measurement. 54, 2, p. 595 - 599 5 p.

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)
8 Citations (Scopus)

Stimulated power generation in ES-SIS junction arrays

Hassel, J., Helistö, P., Grönberg, L., Seppä, H., Nissilä, J. & Kemppinen, A., 2005, In : IEEE Transactions on Instrumentation and Measurement. 54, 2, p. 632 - 635 4 p.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
2004

Development of a quantum AC voltage standard based on externally shunted Josephson arrays

Nissilä, J., Ojasalo, K., Kemppainen, A., Manninen, A., Hassel, J., Helistö, P. & Seppä, H., 2004, 2004 Conference on Precision Electromagnetic Measurements Digest. IEEE Institute of Electrical and Electronic Engineers, p. 158-159

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Fast Josephson arrays for voltage and impedance metrology

Hassel, J., Grönberg, L., Helistö, P., Seppä, H., Nissilä, J. & Kemppainen, A., 2004, 2004 Conference on Precision Electromagnetic Measurements Digest. IEEE Institute of Electrical and Electronic Engineers, p. 154-155

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Finnish national standards laboratories: 2003 annual report

Järvinen, J. (ed.), Heinonen, M. (ed.), Lassila, A. (ed.) & Rajala, R. (ed.), 2004, Helsinki: Centre of Metrology and Accreditation. 62 p. (MIKES Publication; No. J1/2004).

Research output: Book/ReportReport

Open Access

Yleismittarin vertailumittaus: Loppuraportti

Rajala, R., 2004, Helsinki: Centre of Metrology and Accreditation. 38 p. (MIKES Julkaisu; No. J8/2004).

Research output: Book/ReportReport

Open Access
2003

AC voltage standard based on a programmable SIS array

Helistö, P., Nissilä, J., Ojasalo, K., Penttilä, J. S. & Seppä, H., 2003, In : IEEE Transactions on Instrumentation and Measurement. 52, 2, p. 533-537 5 p.

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Analysis of different measurement setups for a programmable Josephson voltage standard

Behr, R., Kohlmann, J., Janssen, J-T. B. M., Kleinschmidt, P., Williams, J. M., Djordjevic, S., Lo-Hive, J-P., Piquemal, F., Hetland, P-O., Reymann, D., Eklund, G., Hof, C., Jeanneret, B., Chevtchenko, O., Houtzager, E., van den Brom, H. E., Sosso, A., Andreone, D., Nissilä, J. & Helistö, P., 2003, In : IEEE Transactions on Instrumentation and Measurement. 52, 2, p. 524-528

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)
2001

Improvements in resistance calibration service in MIKES

Satrapinski, A., Rautiainen, A., Rajala, R. & Helistö, P., 2001, URSI XXVI Convention on Radio Science and Second Finnish Wireless Communications Workshop: Digest of technical papers. Tampere: Tampere University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1988

A computer-controlled Josephson voltage standard

Seppä, H., Immonen, P. & Räihä, J., 1988, In : IEEE Transactions on Instrumentation and Measurement. 37, 1, p. 2-9

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
1986

A computer controlled Josephson voltage standard

Seppä, H., Immonen, P. & Räihä, J., 1986, CPEM 86: 1986 Conference on precision electromagnet measurements. p. 110-111

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

An automatic AC bridge for precision resistance measurements

Seppä, H., Immonen, P., Saari, J-M. & Veijola, T., 1986, CPEM 86: 1986 Conference on precision electromagnetic measurements.. p. 205-206

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Kuitutekniikka suurjännitemittauksissa

Rajala, R., 1986, Sähkömittaukset ja mittauslaitteet. Härkönen, S. (ed.). Helsinki, p. 189-191

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

1985

Thin film process for Nb/NbOx/(Pb-In-Au) Josephson junction devices

Salmi, J., Knuutila, J., Seppä, H. & Immonen, P., 1985, In : Thin Solid Films. 126, 1-2, p. 77 - 81 5 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
1984

A quantum Hall effect silicon chip

Grönberg, L., Pohjonen, H., Murto, T., Heleskivi, J., Immonen, P. & Seppä, H., 1984, 11th Nordic Semiconductor Meeting. Espoo: VTT Technical Research Centre of Finland, p. 209-212 (VTT Symposium; No. 45).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Computer controlled attenuation claibrator of an x-band squid

Seppä, H., Immonen, P., Räihä, J. & Kulmala, T., 1984, CPEM 84 : Digest of Conference on Precision Electromagnetic Measurements. Postma, H. & Harmans, C. (eds.). IEEE Institute of Electrical and Electronic Engineers, p. 13-14

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Josephson voltage standard

Seppä, H., Immonen, P., Räihä, J., Salmi, J. & Vuorinen, J., 1984.

Research output: Contribution to conferenceConference articleScientific

Use of the quantum hall effect as a resistance standard

Immonen, P., Grönberg, L. & Seppä, H., 1984. 4 p.

Research output: Contribution to conferenceConference articleScientific