Department of Electronics and Nanoengineering

Micro and Quantum Systems

The Micro and Quantum Systems (MQS) group is located in Micronova, the nanofabrication facility of Aalto University. Our research interests span from nanoscale transport phenomena to quantum technologies and nanotechnology-based green energy production.
group photo
Group photo from recreation day in Porkkala. From the left: Ramesh Raju, Lassi Hällström, Matti Raasakka, Daryna Ihnatiuk, Pyry Vaara, Aadesh Singh, Arttu Pönni, Camilla Tossi, Ilkka Tittonen, Shihan Zhao, Cynthia Vidal, Ornella Laouadi, Artem Lopatenko

 Our current research topics include

-    Photoelectrocatalysis
-    Plasmonic nanoparticles
-    Nanoscale thermal engineering and thermoelectrics
-    Semiconductor quantum optics
-    Quantum information and -computing

We aim to combine simulation studies with experimental work to find intriguing approaches for experiments and concurrently, to validate the computational effort. In addition to research work, we participate actively in teaching, especially in the frameworks of Quantum Technologies B.Sc. program and Electronics and Nanotechnology M.Sc. program.

We are always interested in collaborating with new people. If you are interested in working with us, whether in terms of a M. Sc. thesis, or a research visit or -collaboration, please contact Prof. Ilkka Tittonen (contact details below).

Research frameworks:

We are part of the Flagship on Photonics and Research Innovation (PREIN) programme managed by the Academy of Finland, as well as the Centre for Quantum Engineering (CQE) in Aalto University.

Current research frameworks:

  • The Academy of Finland project CarbonSurf, within the C1 Value program, for the development of novel CO2 catalysts and catalytic structures
  • The Academy of Finland project eVapor, within the ICT 2023 program, for the self-standing harvest of energy from water evaporation into electrical power for the operation of microcontrollers and other low-power devices

Past research frameworks:

  • The European Union project TransFlexTeg , within the H2020 program, for the development of large-area transparent thin films, their thermoelectric applications, and the investigation of thermal transport phenomena
  •  The Academy of Finland project OPTOBIO, within the New Energy Program, for the generation of solar fuels via photoelectrochemical water electrolysis by semiconductor and plasmonic materials

Latest publications

Single-step chemical vapour deposition of anti-pyramid MoS2/WS2vertical heterostructures

Xueyin Bai, Shisheng Li, Susobhan Das, Luojun Du, Yunyun Dai, Lide Yao, Ramesh Raju, Mingde Du, Harri Lipsanen, Zhipei Sun 2021 Nanoscale

Quantum information probes of charge fractionalization in large-N gauge theories

Brandon S. DiNunno, Niko Jokela, Juan F. Pedraza, Arttu Pönni 2021 Journal of High Energy Physics

Computational Study Revealing the Influence of Surface Phenomena in p-GaAs Water-Splitting Cells

Lassi Hällström, Camilla Tossi, Ilkka Tittonen 2021 Journal of Physical Chemistry C

Photoelectrochemical, photocatalytic and electrocatalytic behavior of titania films modified by nitrogen and platinum species

D. Ihnatiuk, V. Vorobets, M. Šihor, C. Tossi, G. Kolbasov, N. Smirnova, I. Tittonen, A. Eremenko, K. Kočí, O. Linnik 2021 Applied Nanoscience (Switzerland)

Towards precision holography

Niko Jokela, Arttu Pönni 2021 Physical Review D

Influence of AlN interlayer on AlGaN/GaN heterostructures grown by metal organic chemical vapour deposition

Raju Ramesh, Ponnusamy Arivazhagan, K. Prabakaran, S. Sanjay, K. Baskar 2021 Materials Chemistry and Physics

Enhancement of visible light photodetector performance for ultrafast switching using flower shaped gallium nitride nanostructures

Sanjay Sankaranarayanan, Prabakaran Kandasamy, Ramesh Raju, Saravanan Gengan, Baskar Krishnan 2021 Scripta Materialia

Hydrogen induced interface engineering in Fe2O3-TiO2heterostructures for efficient charge separation for solar-driven water oxidation in photoelectrochemical cells

Aadesh P. Singh, Richard Baochang Wang, Camilla Tossi, Ilkka Tittonen, Björn Wickman, Anders Hellman 2021 RSC Advances

Enhancing the Hydrogen Evolution Properties of Kesterite Absorber by Si-Doping in the Surface of CZTS Thin Film

Manoj Vishwakarma, Mukesh Kumar, Mylène Hendrickx, Joke Hadermann, Aadesh P. Singh, Yogita Batra, B. R. Mehta 2021 Advanced Materials Interfaces
More information on our research in the Research database.
Research database


In addition to the extensive Micronova cleanroom facilities, important equipment on which MQS members have considerable expertise are listed below.

Professor Ilkka Tittonen
Email: ilkka.tittonen at

Postal address:
Department of Electronics and Nanoengineering
Aalto University School of Electrical Engineering
P.O. Box 13500, 00076 Aalto, Finland

Visiting address:
Micronova, 4th floor, room 4131
Tietotie 3, 02150 Espoo

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