Ghost particles STM image (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Scanning tunneling microscopy image of a tantalum diselenide sample that is just 3 atoms thick. Credit Mike Crommie et al./Berkeley Lab Usage Restrictions Credit Mike Crommie et al./Berkeley Lab License Original content 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.