SisuSemi Oy Secures over €1 Million in Seed funding to Revolutionize Semiconductor Industry with Groundbreaking Surface Cleaning Technology  

Turku, Finland – March 14, 2025

SisuSemi Oy, a pioneering deep tech company founded in 2024 and based in Turku, is set to transform the semiconductor industry with its innovative silicon-based surface cleaning technology. This breakthrough, developed over a decade of research at the University of Turku, promises to significantly enhance surface quality, enabling higher density chip designs and improving overall chip performance. SisuSemi changes the focus from particle level cleanliness to atomic-level cleanliness. As component size decreases and node width in state-of-the-art microchips is 2 nm, which is merely 20 atoms thick, atomics-level cleanliness has become a limiting factor to keep Moore law valid. 

 

SisuSemi's atomic-level cleaning technology addresses critical challenges in semiconductor manufacturing by decreasing surface defects and leakage current. This advancement is poised to be a game changer, offering unparalleled improvements in chip quality and reliability. 

"We are thrilled to introduce this cutting-edge technology to the market," said Erkki Seppäläinen, CEO of SisuSemi Oy. "Our research has shown that our surface cleaning process can dramatically improve the performance and efficiency of silicon-based semiconductors, paving the way for more advanced and powerful electronic devices." 

 

Key benefits of SisuSemi's technology include: 

• Enhanced surface quality for higher density chip designs 

• Reduction in surface defects 

• Improved chip performance 

• Decreased leakage current 

 

SisuSemi Oy is committed to driving innovation in the semiconductor industry and looks forward to collaborating with industry leaders to bring this revolutionary technology to the forefront of electronic manufacturing.

SisuSemi is grateful for the funding of Finnish Butterfly Venture Fund IV, NSI Nordic Science I, Monttu Ventures, Swedish BVF Venture Fund IV, Danish PSV Hafnium Fund I and European Investment Fund. Additionally, Business Finland supports the development and commercialization of the solution.  

 

About SisuSemi Oy: Founded in 2024 and based in Turku, Finland, SisuSemi Oy specializes in silicon-based semiconductor surface cleaning at the atomic level. Leveraging over 10 years of research from the University of Turku, SisuSemi is dedicated to improving chip quality and performance through innovative technology solutions. 

 

For more information, see SisuSemi web page: www.SisuSemi.com   

Erkki Seppäläinen 

CEO, Co-founder, SisuSemi  

erkki@sisusemi.com  

+358 40 7687591