Projects per year
Personal profile
Short bio
Dr. Aapo Varpula received his degree of Doctor of Science from Aalto University in 2011. Since late 2011 he has been working on scientific and industrial projects on photonics and MEMS at VTT Technical Research Centre of Finland Ltd. He is currently leading the Medical microsystems team, which is working on various devices and sensor systems for a broad range of applications, including medical applications. These include Fabry-Pérot-interferometer (FPI) modules and MEMS devices, ultrasonic and acoustic MEMS sensors and systems, MEMS sensors, infrared detectors, and thermophotonics. He has strong expertise in optical and thermal detectors and devices, thermoelectrics, chemical sensors, solar energy, photovoltaics, energy harvesting, MEMS, semiconductor devices, device physics, and device modelling, design, fabrication, and characterization.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
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Projects
- 1 Active
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EPheS : Efficient Photonics for Sustainable Imaging and Sensing
Varpula, A. (Manager), Ylivaara, O. M. E. (Participant), Miranto, A. (Participant), Maurya, S. (Participant), Mannila, R. (Participant) & Tappura, K. (Participant)
1/01/25 → 31/12/27
Project: Business Finland project
Research output
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Infrared bolometers based on 40-nm-Thick Nano-Thermoelectric silicon membranes
Murros, A., Sovanto, K., Tiira, J., Tappura, K., Prunnila, M. & Varpula, A., Mar 2025, In: Infrared Physics and Technology. 145, 105720.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Citations (Scopus)131 Downloads (Pure) -
High-performance silicon-based nano-thermoelectric bolometers for uncooled infrared sensing
Varpula, A., Murros, A., Sovanto, K., Rantala, A., Martins, D. G., Tappura, K., Tiira, J. & Prunnila, M., 2023, Electro-Optical and Infrared Systems: Technology and Applications XX. Hickman, D. L., Bursing, H., Kamerman, G. W. & Steinvall, O. (eds.). International Society for Optics and Photonics SPIE, 15 p. 1273702. (Proceedings of SPIE, Vol. 12737).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open AccessFile3 Citations (Scopus)195 Downloads (Pure) -
Uncooled nano-thermoelectric bolometers for infrared imaging and sensing
Varpula, A., Murros, A., Sovanto, K., Rantala, A., Martins, D. G., Tappura, K., Tiira, J. & Prunnila, M., 14 Mar 2023, Optical Components and Materials XX. Jiang, S. & Digonnet, M. J. (eds.). International Society for Optics and Photonics SPIE, 124170U. (Proceedings of SPIE, Vol. 12417).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open AccessFile3 Citations (Scopus)183 Downloads (Pure) -
Characterization of predictable quantum efficient detector at 488 nm and 785 nm wavelengths with an order of magnitude change of incident optical power
Korpusenko, M., Manoocheri, F., Kilpi, O. P., Varpula, A., Kainlauri, M., Vehmas, T., Prunnila, M. & Ikonen, E., Jan 2022, In: Measurement Science and Technology. 33, 1, 015206.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access4 Citations (Scopus) -
Absorber structure for thermal detectors
Tappura, K. (Inventor), Varpula, A. (Inventor) & Prunnila, M. (Inventor), 30 Dec 2021, IPC No. G01J 5/ 20 A I, Patent No. US11402272, Priority date 30 Oct 2019, Priority No. WO2019FI50776Research output: Patent › Patent