Ville Laitinen

Ville Laitinen is a Post-doctoral Researcher in the Physics Department at Lappeenranta-Lahti University of Technology (LUT), School of Engineering Sciences. His research focuses on developing magnetically shape-shifting materials, particularly magnetic shape memory alloys (MSM alloys), for applications in micropumps, robotics, and valves. He works within LUT's AMBI research platform and collaborates internationally with institutions including University of Birmingham, University of Pittsburgh, University College London, and Paul Scherrer Institute.

Laitinen received his D.Sc. (Tech.) from LUT School of Engineering Science (2018-2021) following an M.Sc. (Tech.) from Lappeenranta University of Technology (2011-2015). His doctoral research centered on laser powder bed fusion for manufacturing Ni-Mn-Ga magnetic shape memory alloy actuators.

Laitinen's research interests span additive manufacturing, laser processing of magnetic shape memory alloys, and 4D printing technologies. He is particularly known for pioneering work in fabricating functional magnetic shape memory structures using 4D printing techniques. His research demonstrates how these smart materials can change shape under magnetic fields, achieving up to 6% magnetic-field-induced strain. The research has significant implications for replacing complex mechanical assemblies with intelligent materials in small motion-generating devices, with potential applications in robotics and biomedical engineering.

Analysis of Laitinen's recent publications reveals a strong focus on optimizing laser-based additive manufacturing processes for Ni-Mn-Ga magnetic shape memory alloys. His work spans fundamental material characterization, process development, and application-oriented research. Key trends include advancing femtosecond laser micromachining techniques, investigating solidification behavior during laser powder bed fusion, exploring elemental doping effects, and developing novel actuator designs. The research consistently addresses challenges in producing functional MSM structures with precise control over microstructure and magnetic properties.

• Invitation to join Young Academy Finland (2025)

Laitinen has successfully secured funding from the Research Council of Finland for his research on magnetic shape memory materials. His work is conducted within a collaborative team environment that includes doctoral students like Meysam Norouzi Inallu and Professor Kari Ullakko, who pioneered magnetic shape memory alloys at MIT in the 1990s. The research group maintains strong international partnerships that provide complementary expertise and resources.

Laitinen's research is conducted primarily within LUT's AMBI research platform, which focuses on advanced manufacturing technologies. His team works extensively with laser-based additive manufacturing equipment to produce and characterize magnetic shape memory structures. The laboratory environment combines materials processing capabilities with comprehensive characterization tools to analyze the relationship between manufacturing parameters, microstructure, and functional properties of these smart materials.