Tweedie, M. http://orcid.org/0000-0001-7073-0517
Maguire, P. D. http://orcid.org/0000-0002-2725-4647
Funding for this research was provided by:
Invest Northern Ireland (RD0714186)
Department for Employment and Learning, Northern Ireland (US-IRL 013)
Science Foundation Ireland (09/US/I1758)
National Science Foundation (NSF 0961250)
Article History
Received: 22 May 2020
Accepted: 26 May 2020
First Online: 1 June 2020
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: The authors would also like to acknowledge Gerardo Igler of Universal Laser Systems GmbH, Austria, for supply of test samples fabricated for evaluation of HFDFO defocus settings.