Català, Frederic
Marsà, Ferran
Montes-Usategui, Mario
Farré, Arnau
Martín-Badosa, Estela http://orcid.org/0000-0002-1162-3567
Article History
Received: 11 August 2017
Accepted: 1 November 2017
First Online: 22 November 2017
Competing Interests
: M.M.-U. and A.F. are holders of the patents US 8,637,803 and JP 5,728,470, which protect the technology for measuring forces used in the research presented here. F.M., M.M.-U. and A.F. are shareholders in the company Impetux Optics S.L., which commercially exploits that patented technology. In addition, F.M. and A.F. were employees of that company during the development of the research.