2024-05-10T09:24:26Z https://saviorsofearth.ning.com/video/video/listTagged?tag=nano-snowman&rss=yes&xn_auth=no tag:saviorsofearth.ning.com,2009-12-12:2492330:Video:228675 2009-12-12T21:17:09.356Z CHRISTINA https://saviorsofearth.ning.com/profile/ChristinaA738

<a href="https://saviorsofearth.ning.com/video/the-worlds-smallest-snowman"><br /> <img alt="Thumbnail" height="180" src="https://storage.ning.com/topology/rest/1.0/file/get/1510412624?profile=original&amp;width=240&amp;height=180" width="240"></img><br /> </a> <br></br>The snowman is 10 µm across, 1/5th the width of a human hair.<br></br> <br></br> The snowman was made from two tin beads used to calibrate electron microscope astigmatism. The eyes and smile were milled using a focused ion beam, and the nose, which is under 1 µm wide (or 0.001 mm), is ion beam deposited platinum.<br></br> <br></br> A nanomanipulation system was used to assemble the parts…

<a href="https://saviorsofearth.ning.com/video/the-worlds-smallest-snowman"><br /> <img src="https://storage.ning.com/topology/rest/1.0/file/get/1510412624?profile=original&amp;width=240&amp;height=180" width="240" height="180" alt="Thumbnail" /><br /> </a><br />The snowman is 10 µm across, 1/5th the width of a human hair.<br /> <br /> The snowman was made from two tin beads used to calibrate electron microscope astigmatism. The eyes and smile were milled using a focused ion beam, and the nose, which is under 1 µm wide (or 0.001 mm), is ion beam deposited platinum.<br /> <br /> A nanomanipulation system was used to assemble the parts 'by hand' and platinum deposition was used to weld all elements together. The snowman is mounted on a silicon cantilever from an atomic force microscope whose sharp tip 'feels' surfaces creating topographic surveys at almost atomic scales.