2025

• Zambach, Mathias; Ouyang, Ziwei; Knaapila, Matti Pekka; Beleggia, Marco; Frandsen, Cathrine. (2025) Design of superparamagnetic nanoparticle-materials for high-frequency inductor cores. APL Materials
  Academic article
• Li, Tao; Liu, Longhui; Zhang, Yuhua; Cheng, Dongyang; Guan, Yijia; Ravindranathan, Rini Padinjakkara. (2025) Polymer concentration and solvent quality-driven effects on chain structure and β conformation in poly(9,9-dioctylfluorene) solutions. Polymer
  Academic article

2024

• Yadav, Suraj; Pranav, Manasi; Gangadharappa, Chandrasekhar; Huss-Hansen, Mathias; Schwartzkopf, Matthias; Kjelstrup-Hansen, Jakob. (2024) Rational Third Component Choices Drive Enhanced Morphology and Efficiency in Ternary Blend Organic Solar Cells. ACS Energy Letters
  Academic article

2015

• Sandsaunet, Marit Ulset; Knaapila, Matti; Tavares, Luciana; Kjelstrup-Hansen, Jacob; Helgesen, Geir. (2015) Parallel integration of aligned carbon strings in polymer composite: Dielectrophoretic preparation, finite element simulation, and electrical characterization. Polymer Composites
  Academic article

2012

• Høyer, Henrik; Knaapila, Matti; Kjelstrup-Hansen, Jacob; Helgesen, Geir. (2012) Microelectromechanical strain and pressure sensors based on electric field aligned carbon cone and carbon black particles in a silicone elastomer matrix. Journal of Applied Physics
  Academic article
• Helgesen, Geir; Knaapila, Matti; Skjeltorp, Arne Torbjørn; Høyer, Henrik; Cernak, J. (2012) Field induced microparticle structure formation in fluids. Revista Cubana de Física
  Academic article

2011

• Høyer, Henrik; Knaapila, Matti; Kjelstrup-Hansen, Jacob; Liu, Xuhai; Helgesen, Geir. (2011) A strain sensor based on an aligned carbon particle string in a UV-cured polymer matrix. Applied Physics Letters
  Academic article
• Knaapila, Matti; Evans, Rachel C.; Gutacker, Andrea; Garamus, Vasil M.; Székely, Noémi K.; Scherf, Ulrich. (2011) Conjugated polyelectrolyte (CPE) poly[3-[6-(N-methylimidazolium)hexyl]-2,5-thiophene] complexed with aqueous sodium dodecylsulfate amphiphile: synthesis, solution structure and "surfactochromic" properties. Soft Matter
  Academic article
• Knaapila, Matti; Bright, Daniel W.; Stepanyan, Roman; Torkkeli, Mika; Almásy, László; Schweins, Ralf. (2011) Network structure of polyfluorene sheets as a function of alkyl side chain length. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics
  Academic article
• Knaapila, M.; Høyer, Henrik; Svåsand, Eldrid; Buchanan, Mark; Skjeltorp, Arne Torbjørn; Helgesen, Geir. (2011) Aligned Carbon Cones in Free-Standing UV-Curable Polymer Composite. Journal of Polymer Science Part B: Polymer Physics
  Academic article
• Knaapila, Matti; Pinheiro, Jean Patrick; Buchanan, Mark; Skjeltorp, Arne Torbjørn; Helgesen, Geir. (2011) Directed assembly of carbon nanocones into wires with an epoxy coating in thin films by a combination of electric field alignment and subsequent pyrolysis. Carbon
  Academic article

2009

• Burrows, Hugh D.; Tapia, Maria J.; Fonseca, Sofia M.; Valente, Artur J.M.; Lobo, Victor M.M.; Justino, Licínia L.G.. (2009) Aqueous solution behavior of anionic fluorene-co-thiophene-based conjugated polyelectrolytes. ACS Applied Materials & Interfaces
  Academic literature review