{"action":"created","issue":{"url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/16","repository_url":"https://api.github.com/repos/NanoLabStaff/nanolab","labels_url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/16/labels{/name}","comments_url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/16/comments","events_url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/16/events","html_url":"https://github.com/NanoLabStaff/nanolab/issues/16","id":31147256,"number":16,"title":"Making gold nano particles on carbon substrates by sputtering","user":{"login":"vidartf","id":510760,"avatar_url":"https://avatars.githubusercontent.com/u/510760?v=3","gravatar_id":"","url":"https://api.github.com/users/vidartf","html_url":"https://github.com/vidartf","followers_url":"https://api.github.com/users/vidartf/followers","following_url":"https://api.github.com/users/vidartf/following{/other_user}","gists_url":"https://api.github.com/users/vidartf/gists{/gist_id}","starred_url":"https://api.github.com/users/vidartf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vidartf/subscriptions","organizations_url":"https://api.github.com/users/vidartf/orgs","repos_url":"https://api.github.com/users/vidartf/repos","events_url":"https://api.github.com/users/vidartf/events{/privacy}","received_events_url":"https://api.github.com/users/vidartf/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/NanoLabStaff/nanolab/labels/Deposition","name":"Deposition","color":"f7c6c7"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2014-04-09T10:56:22Z","updated_at":"2016-02-18T11:51:51Z","closed_at":"2016-02-18T11:51:51Z","body":"by Vidar T. Fauske (vidar.fauske@ntnu.no)\r\n\r\n***\r\n\r\nThe Cressington sputtercoater can be used to deposit gold nano particles on a carbon substrate (e.g. a TEM grid with carbon support film), and possibly other substrates as well. To do so, simply use a low deposition thickness (around 1 nm for gold on carbon). The thickness should be chosen such that the gold is prevented from forming a film. This should give a high density of small (1-3 nm) nano particles on the substrate. The substrate can then possibly be heated to allow [Ostwald ripening](http://en.wikipedia.org/wiki/Ostwald_ripening) to occur, which will give a lower density of larger particles.\r\n\r\n***\r\n\r\n![1nm df 01](https://cloud.githubusercontent.com/assets/510760/2654556/238576fc-bfd5-11e3-8c99-6f6dc6a1df49.jpg)\r\nDark field STEM image taken on the Hitachi S-5500 of gold nanoparticles on a TEM grid with ultrathin carbon support. The sample was created by a 1 nm sputtering target. No annealing was performed.\r\n"},"comment":{"url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/comments/185680403","html_url":"https://github.com/NanoLabStaff/nanolab/issues/16#issuecomment-185680403","issue_url":"https://api.github.com/repos/NanoLabStaff/nanolab/issues/16","id":185680403,"user":{"login":"vidartf","id":510760,"avatar_url":"https://avatars.githubusercontent.com/u/510760?v=3","gravatar_id":"","url":"https://api.github.com/users/vidartf","html_url":"https://github.com/vidartf","followers_url":"https://api.github.com/users/vidartf/followers","following_url":"https://api.github.com/users/vidartf/following{/other_user}","gists_url":"https://api.github.com/users/vidartf/gists{/gist_id}","starred_url":"https://api.github.com/users/vidartf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vidartf/subscriptions","organizations_url":"https://api.github.com/users/vidartf/orgs","repos_url":"https://api.github.com/users/vidartf/repos","events_url":"https://api.github.com/users/vidartf/events{/privacy}","received_events_url":"https://api.github.com/users/vidartf/received_events","type":"User","site_admin":false},"created_at":"2016-02-18T11:51:51Z","updated_at":"2016-02-18T11:51:51Z","body":"Closing this as it clutters my github \"issues\" view."}}