Research output per year
Research output per year
- 1 - 50 out of 199 results
Search results
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2024
18SIB05 ROCIT – Robust Optical Clocks for International Timescales: Final
Lindvall, T. & ROCIT project, 2024, Euramet. 23 p. (VTT Research Report; No. VTT-R-00148-24).Research output: Book/Report › Report
Open AccessFile99 Downloads (Pure) -
3D camera based on laser light absorption by atmospheric oxygen at 761 nm
Kääriäinen, T. (Corresponding Author) & Seppä, J., 12 Feb 2024, In: Optics Express. 32, 4, p. 6342-6349 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
A 3D numerical model for the performance analysis of a differential pressure flow meter in transient conditions for liquid fuels
Canale, C., Arpino, F., Cortellessa, G., Ficco, G., Grossi, G., Huovinen, M. & Karvinen, A., 2024, In: Journal of Physics: Conference Series. 2685, 1, 8 p., 012015.Research output: Contribution to journal › Article in a proceedings journal › Scientific › peer-review
Open Access -
Artificial neural network assisted spectral scatterometry for grating quality control
Mattila, A. (Corresponding Author), Nysten, J., Heikkinen, V., Kilpi, J., Korpelainen, V., Hansen, P.-E., Karvinen, P., Kuittinen, M. & Lassila, A., 31 May 2024, In: Measurement Science and Technology. 35, 8, 085025.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile9 Downloads (Pure) -
Comparing novel small-angle x-ray scattering approaches for absolute size and number concentration measurements of spherical SiO2 particles to established methods
Schürmann, R., Gaál, A., Sikora, A., Ojeda, D., Bartczak, D., Goenaga-Infante, H., Korpelainen, V., Sauvet, B., Deumer, J., Varga, Z. & Gollwitzer, C., 16 Sept 2024, In: Nanotechnology. 35, 38, 385701.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Cryogenic Fiber-coupled Electro-optic Characterization Platform for High-speed Photodiodes
Priyadarshi, S. (Corresponding Author), Tian, H., Fernandez Scarioni, A., Wolter, S., Kieler, O., Kohlmann, J., Nissilä, J. & Bieler, M., Feb 2024, In: Journal of Infrared, Millimeter, and Terahertz Waves. 45, 1-2, p. 159-170 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
EMPIR 19ENG08 WindEFCY - Final Publishable Report
Kananen, T. & WindEFCY project, 19 Mar 2024, Euramet. 24 p. (VTT Research Report; No. VTT-R-00195-24).Research output: Book/Report › Report
Open AccessFile27 Downloads (Pure) -
Hybrid integrated GaSb/Si3N4 narrow linewidth (<50 kHz) distributed Bragg reflector laser
Ojanen, S.-P. (Corresponding Author), Zia, N., Viheriälä, J., Koivusalo, E., Hilska, J., Quashef, A., Wallin, A., Hanhijärvi, K., Fordell, T. & Guina, M., 26 Aug 2024, In: Applied Physics Letters. 125, 9, 091106.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Kemian metrologia
Järvinen, J. (Editor), 2024, VTT Technical Research Centre of Finland. 60 p. (VTT Technology; No. 428).Research output: Book/Report › Report
Open Access -
Kvalitatiivisen kemian metrologia
Järvinen, J. (Editor), 2024, VTT Technical Research Centre of Finland. 48 p. (VTT Technology; No. 429).Research output: Book/Report › Report
Open Access -
Mikrobiologisten menetelmien epävarmuuden laskeminen: Elintarvikkeet, vesi ja asumisterveys
Järvinen, J. (Editor), 2024, VTT Technical Research Centre of Finland. 64 p. (VTT Technology; No. 430).Research output: Book/Report › Report
Open Access -
Recent advances and perspectives in photometry in the era of LED lighting
Ikonen, E., Feb 2024, In: Measurement Science and Technology. 35, 2, 021001.Research output: Contribution to journal › Other journal contribution › Scientific › peer-review
Open Access2 Citations (Scopus) -
Sensitive Detection of Metal Concentrations in Aqueous Solution Using Real-Time Micro-Plasma Emission Spectroscopy
Das, S., Blomberg von der Geest, K., Mäkinen, A., Roos, A., Ikonen, E. & Laurila, T., 2024, In: Analytical Letters. 57, 14, p. 2376-2387 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Spectral analysis of deviations from key comparison reference values
Maham, K. (Corresponding Author), Kosonen, V., Peltoniemi, J., Kärhä, P. & Ikonen, E., 2 Feb 2024, In: Metrologia. 61, 1, 015002.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Traceable characterization of hollow organosilica beads as potential reference materials for extracellular vesicle measurements with optical techniques
Deumer, J. (Corresponding Author), Schürmann, R., Gaál, A., Varga, Z., Bettin, B., van der Pol, E., Nieuwland, R., Ojeda, D., Sikora, A., Bartczak, D., Goenaga-Infante, H., Noireaux, J., Khakpour, M., Korpelainen, V. & Gollwitzer, C., 22 Jan 2024, In: Discover Nano. 19, 1, p. 14 17 p., 14.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
2023
AFRIMETS.AUV.A-S2 final report, calibration of a multi-function acoustic calibrator
Nel, R., Potgieter, H., Dobrowolska, D., Młyńska, A., Shawky, H. A., Maina, A. & Ojasalo, K., 2023, In: Metrologia. 60, 1 A, 09003.Research output: Contribution to journal › Article › Scientific › peer-review
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Application of UV–Vis spectroscopy for the detection of adulteration in Mediterranean honeys
Dimakopoulou-Papazoglou, D. (Corresponding Author), Ploskas, N., Serrano, S., Silva, C. S., Valdramidis, V., Koutsoumanis, K. & Katsanidis, E., Dec 2023, In: European Food Research and Technology. p. 3043-3053 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
2 Citations (Scopus) -
A preliminary study of fingerprint aging using near infrared hyperspectral imaging (NIR-HSI)
Carneiro, C. T., Silva, C. S. & Weber, I. T. (Corresponding Author), 2023, In: Analytical Methods. 15, 46, p. 6451-6459 9 p.Research output: Contribution to journal › Article › Scientific › peer-review
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Cantilever-based photoacoustic sensor for terahertz range
Ikonen, E., Sharma, S., Ahmadi, M., Rossi, J., Vainio, M., Sun, Z. & Steiger, A., 2023, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI. Sadwick, L. P. & Yang, T. (eds.). International Society for Optics and Photonics SPIE, 124200A. (Proceedings of SPIE - The International Society for Optical Engineering, Vol. 12420).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Cantilever-Enhanced Photoacoustic Detector for Black and Brown Carbon
Karhu, J., Kuula, J., Mikkonen, T., Ward, M., Virkkula, A., Ikonen, E., Hieta, T., Timonen, H. & Vainio, M., 2023, 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023. IEEE Institute of Electrical and Electronic Engineers, 1 p. (Conference on Lasers and Electro-Optics Europe (CLEO EUROPE)).Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific
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Characterization of PillarHall test chip structures using a reflectometry technique
Danilenko, A. (Corresponding Author), Rastgou, M., Manoocheri, F., Kinnunen, J., Korpelainen, V., Lassila, A. & Ikonen, E., Sept 2023, In: Measurement Science and Technology. 34, 9, 094006.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Detecting consistent patterns in pseudorange residuals in GNSS timing data
Kotilainen, M., Mäkelä, M., Hanhijärvi, K., Olkkonen, M.-K., Wallin, A., Fordell, T. & Kaasalainen, S., 8 Jun 2023, 2023 International Conference on Localization and GNSS, ICL-GNSS 2023 - Proceedings. Nurmi, J., Sospedra, J. T., Lohan, E.-S., Huerta, J. & Ometov, A. (eds.). IEEE Institute of Electrical and Electronic Engineers, 5 p. 10148921Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Development of primary reference facilities and measurement comparison of standard artifacts for the bidirectional transmittance distribution function
Fu, J. (Corresponding Author), Quast, T., Velke, E., Esslinger, M., Pastuschek, M., Schirmacher, A., Aschan, R., Manoocheri, F. & Ikonen, E., 1 Aug 2023, In: Review of Scientific Instruments. 94, 8, 083102.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access3 Citations (Scopus) -
Development of ScAlN PMUTs for Medical Applications
Karuthedath, C. B., Sebastian, A. T., Helistö, P., Sillanpää, T. & Kärkkäinen, A., Oct 2023, In: Journal of Microelectromechanical Systems. 32, 5, p. 505-512 8 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access6 Citations (Scopus) -
Differential Spectral Responsivity of Solar Cells Measured with an LED Based Experimental Setup
Eghbali, A., Ikonen, E. & Karha, P., 2023, 2023 Middle East and North Africa Solar Conference, MENA-SC 2023 - Proceedings. IEEE Institute of Electrical and Electronic EngineersResearch output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Digital Calibration Certificate in an industrial application
Nummiluikki, J., Saxholm, S., Kärkkäinen, A. & Koskinen, S., 2023, In: Acta IMEKO. 12, 1, 6 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access2 Citations (Scopus) -
Digital implementations for determination of temporal light artefacts of LED luminaires
Mantela, V., Nordlund, R., Askola, J., Kärhä, P. & Ikonen, E., 2023, (E-pub ahead of print) In: Lighting Research and Technology.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Empirical Characterization of Cable Effects on a Reference Lightning Impulse Voltage Divider
Havunen, J., Passon, S., Hällström, J., Meisner, J. & Schlüterbusch, T. C., 15 May 2023, In: IEEE Transactions on Instrumentation and Measurement. 72, p. 1-9 9 p., 1005009.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile78 Downloads (Pure) -
EURAMET supplementary comparison EURAMET.L-S26.1, measurement of groove depth standards in the range 5 μm up to 0.9 mm
Lassila, A., Byman, V., Kirchhoff, J., Aksulu, M., Ozaita, M. & Carcedo, L., 1 Jan 2023, In: Metrologia. 60, 1 A, 04003.Research output: Contribution to journal › Article › Scientific › peer-review
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Evaluation of a Sr+88 Optical Clock with a Direct Measurement of the Blackbody Radiation Shift and Determination of the Clock Frequency
Steinel, M., Shao, H., Filzinger, M., Lipphardt, B., Brinkmann, M., Didier, A., Mehlstäubler, T. E., Lindvall, T., Peik, E. & Huntemann, N., 23 Aug 2023, In: Physical Review Letters. 131, 8, 083002.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access2 Citations (Scopus) -
Impact ionization in silicon at low charge-carrier energies
Korpusenko, M. (Corresponding Author), Vaskuri, A., Manoocheri, F. & Ikonen, E., 1 Aug 2023, In: AIP Advances. 13, 8, 085119.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access2 Citations (Scopus) -
Internal quantum efficiency of silicon photodetectors at ultraviolet wavelengths
Korpusenko, M., Vaskuri, A., Manoocheri, F. & Ikonen, E., 1 Oct 2023, In: Metrologia. 60, 5, 055010.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access2 Citations (Scopus) -
Large-Scale Dimensional Metrology for Geodesy—First Results from the European GeoMetre Project
Pollinger, F., Courde, C., Eschelbach, C., García-Asenjo, L., Guillory, J., Hedekvist, P. O., Kallio, U., Klügel, T., Neyezhmakov, P., Pesce, D., Pisani, M., Seppä, J., Underwood, R., Wezka, K. & Wiśniewski, M., 2023, Geodesy for a Sustainable Earth: Proceedings of the 2021 Scientific Assembly of the International Association of Geodesy. Freymueller, J. T. & Sánchez, L. (eds.). Cham: Springer, p. 105-110 (International Association of Geodesy Symposia, Vol. 154).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open Access3 Citations (Scopus) -
LED reference spectrum for photometer calibration
Poikonen, T. (Corresponding author), Bergen, T., Blattner, P., Dekker, P., Ferrero, A., Godo, K., Hui, L., Jost, S., Källberg, S., Klej, A., Kokka, A., Ledig, J., Lee, D.-H., Pellegrino, O., Pulli, T., Reiners, T., Schneider, T., Sperling, A., Stuker, F. & Thorseth, A. & 4 others, , 2023, CIE International Commission on Illumination. 24 p. (CIE Publication; No. 251:2023).Research output: Book/Report › Report
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Noise-induced servo errors in optical clocks utilizing Rabi interrogation
Lindvall, T. (Corresponding Author), Wallin, A. E., Hanhijärvi, K. & Fordell, T., 4 Jul 2023, In: Metrologia. 60, 4, 045008.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile20 Downloads (Pure) -
Out-of-Band Fiber-Optic Time and Frequency Transfer Using Asymmetric and Symmetric Opto-Electronic Repeaters
Fordell, T., Hanhijarvi, K., Wallin, A. E., Myyry, J. & Lindvall, T., 1 Jul 2023, In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 70, 7, p. 792-797 6 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Phase-stepping interferometry for parallelism measurement of step gauge faces
Sharma, S. (Corresponding Author), Nysten, J., Lassila, A. & Ikonen, E., 1 Oct 2023, In: Metrologia. 60, 5, 12 p., 055004.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Spectral Mismatch Uncertainty Estimation in Solar Cell Calibration Using Monte Carlo Simulation
Maham, K., Karha, P. & Ikonen, E., 1 Nov 2023, In: IEEE Journal of Photovoltaics. 13, 6, p. 899-904 6 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Supplementary comparisons of national standards of ratio error and phase displacement of AC voltage of power frequency COOMET 411/RU-a/07 (COOMET.EM-S6)
Kiselev, V., Bergman, A., Garnacho, F., Grishin, M., Dimitrov, E., Draxler, K., Dubrovskaya, T., Kikalo, V., Kopshin, V., Kumanova, G., Martin, R., Styblikova, R. & Hallstrom, J., 1 Jan 2023, In: Metrologia. 60, 1A, 01011.Research output: Contribution to journal › Article › Scientific › peer-review
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Supporting quantum technologies with an ultralow-loss silicon photonics platform
Cherchi, M., Bera, A., Kemppinen, A., Nissilä, J., Tappura, K., Caputo, M., Lehtimäki, L., Lehtinen, J., Govenius, J., Hassinen, T., Prunnila, M. & Aalto, T. (Corresponding Author), 6 Apr 2023, In: Advanced Photonics Nexus. 2, 2, 024002.Research output: Contribution to journal › Review Article › peer-review
Open AccessFile65 Downloads (Pure) -
The European GeoMetre project: developing enhanced large-scale dimensional metrology for geodesy
Pollinger, F. (Corresponding Author), Baselga, S., Courde, C., Eschelbach, C., García-Asenjo, L., Garrigues, P., Guillory, J., Hedekvist, P. O., Helojärvi, T., Jokela, J., Kallio, U., Klügel, T., Köchert, P., Lösler, M., Luján, R., Meyer, T., Neyezhmakov, P., Pesce, D., Pisani, M. & Poutanen, M. & 8 others, , 20 Feb 2023, In: Applied Geomatics. 15, 2, p. 371-381 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access4 Citations (Scopus) -
Towards a Robust and Stand-Alone Ultra-Stable Laser System Based on a 124 K Si Resonator with an Instability of $4\times 10^{-17}$
Herbers, S., Yu, J., Anders, L., Kawohl, J., Misera, M., Legero, T., Hanhijärvi, K., Wallin, A., Lindvall, T., Fordell, T. & Sterr, U., 30 Jun 2023, 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). Wiley-IEEE Press, 1 p. 10231948Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific
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Toward the optical control of cryogenic quantum technologies
Kemppinen, A. (Corresponding author), Bera, A., Delrosso, G., Nissila, J., Senior, J., Mykkanen, E., Tappura, K., Vesterinen, V., Selvasundaram, P., Kohopaa, K., Ronzani, A., Walchli, B., Hunnakko, J., Jabdaraghi, R. N., Fordell, T., Ribeiro, M., Hazra, D., Haatainen, T., Loreto, R. P. & Hatinen, J. & 7 others, , 2023, 2023 IEEE Photonics Society Summer Topicals Meeting Series, SUM 2023. IEEE Institute of Electrical and Electronic Engineers, 2 p. (LEOS Summer Topical Meeting, Vol. 2023-July).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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2022
A comparison of relative humidity calibration facilities at temperatures up to 170 °C
Peruzzi, A. (Corresponding Author), Bosma, R., Tabandeh, S., Fernicola, V. & Georgin, E., 15 Feb 2022, In: Measurement. 189, 110435.Research output: Contribution to journal › Article › Scientific › peer-review
4 Citations (Scopus) -
A comparison of traceable spatial angle autocollimator calibrations performed by PTB and VTT MIKES
Geckeler, R. D., Schumann, M., Just, A., Krause, M., Lassila, A. & Heikkinen, V., Apr 2022, In: Metrologia. 59, 2, 024002.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access6 Citations (Scopus) -
Active hyperspectral imager based on a supercontinuum laser and a MEMS Fabry-Pérot interferometer
Kääriäinen, T. & Dönsberg, T. (Corresponding author), 23 Sept 2022, 2022 Conference on Lasers and Electro-Optics, CLEO 2022. IEEE Institute of Electrical and Electronic Engineers, 2 p. SF3F.5. (OSA Technical Digest). (Quantum Electronics and Laser Science).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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A dual-species optical clock to investigate variations of the fine-structure constant and test local position invariance
Steinel, M. (Corresponding author), Shao, H., Lindvall, T., Filzinger, M., Lange, R., Mehlstäubler, T. E., Peik, E. & Huntemann, N., 2022, High-precision measurements and searches for New Physics: 766. WE-Heraeus-Seminar. Wilhelm and Else Heraeus Foundation, p. 87-87 1 p.Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific
Open Access -
An unconventional ultra-low loss silicon photonics platform for quantum technologies
Cherchi, M. (Corresponding author), Bera, A., Kemppinen, A., Nissilä, J., Tappura, K., Caputo, M., Lehtimäki, L., Lehtinen, J., Govenius, J., Prunnila, M. & Aalto, T., 2022, Quantum 2.0 Conference and Exhibition: QUANTUM 2022. Optical Society of America OSA, QW4A.5. (Optics InfoBase Conference Papers).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Compact active hyperspectral imager based on tuneable short wave infrared supercontinuum laser
Kääriäinen, T. & Dönsberg, T., 2022, 3D Image Acquisition and Display: Technology, Perception and Applications 2022. Optical Society of America OSA, JTu2A.2. (Optics InfoBase Conference Papers).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Design and Verification of a Calculable Composite Voltage Calibrator
Havunen, J., Hällström, J., Meisner, J., Gerdinand, F. & Elg, A.-P., 5 Jul 2022, Proceedings of the 27th Nordic Insulation Symposium. Nordic Insulation Symposium, 5 p. (Proceedings of the Nordic Insulation Symposium, Vol. 27).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open Access