Paavo Penttilä awarded Hayashi Jisuke Award for 2022

Dr. Penttilä has devoted his research efforts on investigating the structure of hierarchical cellulosic materials by X-ray and neutron scattering. He has applied these techniques in various research cases, resulting in more than 50 scientific articles with a wide network of co-authors around the world. Paavo Penttilä has received several research grants, including the Academy of Finland Research Fellow grant for 2021-2026.
Paavo Penttilä has made significant contributions to the interpretation of scattering data measured from cellulosic systems, which includes the development of a data analysis model for wood. In his research, Dr. Penttilä has used scattering methods specially to study the interactions between wood and water at nanoscale. This research has yielded fundamental information on the water-induced swelling behaviour of microfibrillar structures within wood cell walls and a better understanding of the effects of moisture on cellulose crystals. Most recently, Dr. Penttilä has adopted tools from machine learning to enable efficient analysis of large amounts of scattering data from wood.
The award also acknowledges Dr. Penttilä’s efforts in international exchange activities. He has actively promoted international collaboration and connected European and Japanese researchers, by making visits to research groups at Japanese universities and building collaborations with researchers from both communities. During the three weeks following the award ceremony, he will be staying as visitor at Kyoto University under a fellowship of the Japan Society for the Promotion of Science. He is also actively contributing to scientific societies, being currently an Alternate Councilor of the Cellulose and Renewable Materials Division of the American Chemical Society and Secretary of the Finnish National Committee for Crystallography.
Previously only one Finn has received this acknowledgement, Professor Eero Kontturi from Aalto University in 2017.
Previous winners.


Biobased Materials Structure
Group led by Research Fellow Paavo Penttilä
Read more news

Erasmus+ Staff Training Week: Transnational Joint Courses and the Exchange Student’s Path from Home to Host
Twenty-five participants from across Europe gathered at Aalto University for this year’s Erasmus+ Staff Training Week, focused on transnational joint courses and student mobility.
Miguel Caro has been appointed as a fixed term Assistant Professor in the Department of Chemistry and Materials Science
PhD. Miguel Caro has been appointed to a four-year fixed-term Assistant Professor (2nd term.) position at the Department of Chemistry and Materials Science as of 1 July 2025.TUM + Aalto SGT summer course explores economic land dynamics in West-Africa through innovative simulation
The summer course offered a dynamic simulation on land economics tailored for West African countries: Liberia, Ivory Coast, Ghana, Togo, and Benin.