Funding for this research was provided by:
Finnish-American Exchange Commission
University of Colorado Boulder
Tekes
Finnish Ministry for Education
Luonnontieteiden ja Tekniikan Tutkimuksen Toimikunta (286898)
Aalto Science Institute
Article History
Received: 25 December 2015
Revised: 5 July 2016
Accepted: 8 July 2016
First Online: 26 July 2016