Esko I. Kauppinen

Aalto University

Esko I. Kauppinen

Carbon nanotube thin films for transparent, flexible and stretchable electronics applications


Esko I. Kauppinen

Department of Applied Physics, Aalto University School of Science

PO Box 15100, FI-00076 Aalto, FINLAND


Canatu Ltd

Konalankuja 5, FI-00390 Helsinki, FINLAND



We present the direct dry printing (DPP) manufacturing method of single walled carbon nanotube (SWNT) based transparent conducting films (TCF) for touch sensors with electrical properties on par with those of ITO-on-PET, and with optical as well as mechanical properties i.e. bendability, flexibility and stretchability better than those of ITO, metal nanowire and metal mesh touch sensors. All carbon transparent, flexible and stretchable TFT-FETs have been made using percolating SWNT network as the semiconductor and SWNT transparent conducting film as the source, drain, gate and interconnect material.  SWNT networks consisting of long, clean and highly individualized SWNTs exhibit substantially improved TCF performance. We introduce SWNT thin films in 3D formable touch sensors for novel future electronics applications.


Professor Esko I. Kauppinen, PhD (Physics) is the Tenured Professor of Physics at Aalto University School of Science, Department of Applied Physics. He has published more than 380  scientific journal papers e.g. in Nature Nanotechnology, NanoLetters, ACS Nano, Angewandte Chemie, Carbon, Energy and Environmental Sciences etc., having Hirsch-index over 43 and over 7500 citations.  He has given more than 101 keynote and invited conference talks and 206  talks at world leading companies and universities. He is considered one of the world leading authors in the area of single walled carbon nanotube synthesis, characterisation and thin film applications as well as in the gas phase synthesis of particles for inhalation drug delivery. He is the founding member of the companies Canatu Oy ( and Teicos Pharma Oy (