Tuesday, January 21, 2020

Details in the process of making "blacker than vantablack" coatings (part 1?)



Recreating MIT's "blacker than vantablack" in a home shop (almost). MIT press release: http://news.mit.edu/2019/blackest-black-material-cnt-0913 MIT nanotube-on-aluminum paper: https://sci-hub.tw/https://doi.org/10.1021/acsami.9b08290 NIST nanotube darkness comparison: https://aip.scitation.org/doi/pdf/10.1063/1.5009190 Shaper handheld CNC router: https://www.shapertools.com/
Almost-as-large quartz tube (I used 76mm OD) : https://www.ebay.com/itm/Fused-quartz-glass-tubing-OD-50mm-x-ID-46mm-x-L-1-240mm-48-Free-Shipping/113713893883 Insulating firebrick for tube furnace: https://www.ebay.com/itm/Insulating-FireBrick-Thermal-Ceramics-K-26-3-10-pk/131698699891 Black velvet on Amazon: https://www.amazon.com/gp/product/B07BGZ82XH/ LR-1 spectrometer: http://www.aseq-instruments.com/LR1.html Applied Science on Patreon: https://www.patreon.com/AppliedScience

6 comments:

  1. Why not just contact the authors of the paper?

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  2. Copper nitrate and salt will create a dark(er) surface.

    http://www.nontoxicprint.com/etchzincsteelaluminum.htm

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    1. sorry miss typed copper sulfate (root kill) and salt water

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  3. Hello, I would try conc. solution of soduim chlorate. I dont have ultrasonic cleaner, but still it has made the aluminium turn black. It might contain some sodium chloride, because of impurities.

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  4. I don't have a lab at my disposal so I'm not sure about the chemical mixtures measurements without actually experimenting. I would first suggest that you make sure that you soak your foil in salt. Your target goal is to bind the salt at a molecular level to the foil before hitting it with a sonic emitter of some sort. You need to work every element of this project under 20um or you won't have the photonic results necessary to bend natural law. I would first use the most ancient method of alchemical solvent/binder mercury. Your admixture will consult of a neutralizer (might try sterile sodium chloride or medical water as a dilute) bind the salt to the aluminum using the mercury mix. Then hit it with your ultrasonic soundwaves to get the nanoscopic meta structures you need. If you really wanna get fancy I've got a lot of stuff to work with at 10um that will actually force photonic bending. I even have a solution to make it a viable material for use by utilizing a nano translucent meta "epoxy" in theory will protect the delicate nano carbon tubes while providing a portable, useable version of the meta structure; unlike anything available utilising current existing technology. If you're interested in collaborating, reach out to me.

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  5. Mr. Krasnow, I'm a journalist and I would love to talk to you about your work. Please send me an email! ~Teresa

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