If anyone would like to read the journal article, it can be downloaded from library genesis.<p><a href="http:&#x2F;&#x2F;libgen.io&#x2F;scimag&#x2F;index.php?s=10.1021%2Facsnano.5b07848&amp;journalid=&amp;v=&amp;i=&amp;p=&amp;redirect=1" rel="nofollow">http:&#x2F;&#x2F;libgen.io&#x2F;scimag&#x2F;index.php?s=10.1021%2Facsnano.5b0784...</a>