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Asked by anon-267549 on 11 Nov 2020.
Question: What is the smallest human-made thing?
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Bradley Young answered on 11 Nov 2020:
This is an amazing movie created by IBM by moving individual atoms!
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Iain Tullis answered on 12 Nov 2020: last edited 12 Nov 2020 1:02 am
I think the small manufactured item that you can buy is a silicon nano particle – which is about 2 nm in diameter. That’s 0.000000002 m. They’re used as a standard in measuring small particles. https://www.nist.gov/news-events/news/2014/09/worlds-smallest-reference-material-big-plus-nanotechnology
The new iPhone has a computer chip with 5 nm features, but there are a lot of these small transistors on one chip – there are 11.8 billion transistors on this chip – which is about 9 mm x 9 mm in size – https://en.wikipedia.org/wiki/5_nm_process
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Daisy Shearer answered on 13 Nov 2020:
I don’t know what the smallest thing is (someone could have made something really tiny that I haven’t heard of) but here are some examples of some tiny things that have been made using nanofabrication:
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The world’s smallest snowman which is 3um tall and made of silica spheres https://www.chemistryworld.com/news/new-record-claimed-for-worlds-tiniest-snowman/2500188.article
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Some scientists recently 3D printed a tiny Millennium Falcon which is about 70um long but has some really impressive detail with features that must be of nm resolution: https://3dprintingindustry.com/news/grenoble-scientists-develop-novel-method-of-3d-printing-controllable-magnetic-microstructures-178627/
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