Device (image) Eindhoven University of Technology Share Print E-Mail Caption Scanning electron microscope image of the device wherein clearly a 'hashtag' is formed. Credit Eindhoven University of Technology Usage Restrictions The image can be used freely by mentioning 'Eindhoven University of Technology' as the source. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.