Original paper: <a href="https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.5c06155?ref=article_openPDF" rel="nofollow">https://pubs.acs.org/doi/pdf/10.1021/acs.nanolett.5c06155?re...</a><p>The scale is micrometer sizes… I wonder what the limits for shrinking are?