Jaakko Timonen

T304 Dept. Applied Physics

I'm an assistant professor of experimental condensed matter physics, research group leader (Active Matter) and Academy Research Fellow 2018-2023. I'm broadly interested in physics of soft and biological materials. Some examples include pattern formation in ferrofluids, lotus-mimicking superhydrophobic surfaces, magnetic tweezing of 'non-magnetic' matter, coloration of a certain spider from Madagascar and fundamentals of slippery lubricated surfaces. Currently, my Academy Research Fellowship focuses on developing techniques for controlling phase transitions in microscopic active matter systems.

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Contact information

Phone number

Areas of expertise

114 Physical sciences, Biological and soft matter physics

Honors and awards

Doctoral thesis award

Doctoral thesis award, Academic Engineers and Architects in Finland TEK and Tekniska Föreningen i Finland (TFiF), 7,500 € (2014)
Award or honor granted for a specific work Department of Applied Physics Jan 2014

Distinction prize for doctoral thesis, Aalto University

Distinction prize for doctoral thesis, Aalto University, 3,000 € (2013)
Award or honor granted for a specific work Department of Applied Physics Jan 2013

Distinction prize for master’s thesis, Helsinki University of Technology

Distinction prize for master’s thesis, Helsinki University of Technology, 1,000 € (2009)
Award or honor granted for a specific work Department of Applied Physics Jan 2009

Research groups

  • Active Matter, Academy Research Fellow
  • Active Matter, Assistant Professor


Functional Magnetic Microdroplets for Antibody Extraction

Hedar H. Al-Terke, Mika Latikka, Jaakko V. I. Timonen, Ladislau Vekas, Arja Paananen, Jussi Joensuu, Robin H. A. Ras 2022 Advanced Materials Interfaces

Dispersing swimming microalgae in self-assembled nanocellulose suspension: Unveiling living colloid dynamics in cholesteric liquid crystals

Guang Chu, Fereshteh Sohrabi, Jaakko V.I. Timonen, Orlando J. Rojas 2022 Journal of Colloid and Interface Science

Recombinant protein condensation inside E. coli enables the development of building blocks for bioinspired materials engineering – Biomimetic spider silk protein as a case study

Bartosz Gabryelczyk, Fred-Eric Sammalisto, Julie-Anne Gandier, Jianhui Feng, Grégory Beaune, Jaakko V.I. Timonen, Markus B. Linder 2022 Materials Today Bio

Magnetic field-driven particle assembly and jamming for bistable memory and response plasticity

Xianhu Liu, Hongwei Tan, Carlo Rigoni, Teemu Hartikainen, Nazish Asghar, Sebastiaan van Dijken, Jaakko V.I. Timonen, Bo Peng, Olli Ikkala 2022 Science Advances

β-1,3-Glucan synthesis, novel supramolecular self-assembly, characterization and application

Robert Pylkkänen, Pezhman Mohammadi, Ville Liljeström, Wojciech Płaziński, Grégory Beaune, Jaakko Timonen, Merja Penttilä 2022 Nanoscale

Ferrofluidic aqueous two-phase system with ultralow interfacial tension and micro-pattern formation

Carlo Rigoni, Grégory Beaune, Bent Harnist, Fereshteh Sohrabi, Jaakko V.I. Timonen 2022 Communications Materials

Fusion Dynamics of Hybrid Cell–Microparticle Aggregates

Grégory Beaune, Laura Sinkkonen, David Gonzalez-Rodriguez, Jaakko V.I. Timonen, Françoise Brochard-Wyart 2021 Langmuir

Ferrofluidic Manipulator

Zoran Cenev, P. A. Diluka Harischandra, Seppo Nurmi, Mika Latikka, Ville Hyninen, Robin H.A. Ras, Jaakko V.I. Timonen, Quan Zhou 2021 IEEE/ASME Transactions on Mechatronics

Electroferrofluids with nonequilibrium voltage-controlled magnetism, diffuse interfaces, and patterns

Tomy Cherian, Fereshteh Sohrabi, Carlo Rigoni, Olli Ikkala, Jaakko V.I. Timonen 2021 Science Advances

Diversity of non-equilibrium patterns and emergence of activity in confined electrohydrodynamically driven liquids

Geet Raju, Nikos Kyriakopoulos, Jaakko V.I. Timonen 2021 Science Advances