IBM’s patent 3d printing sound-wave of an acoustic hologram

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According to the IBM’s patent, “A method and associated systems for 3D printing on the surface of an acoustic hologram use an array of sound-wave emitters to generate a three-dimensional acoustic hologram of an object to be printed”.

https://patents.google.com/patent/US20180361680A1/en

https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?appname=skmwww&htmlfid=897%2FENUS291-069&infotype=AN&mhq=3d%20print%20patent&mhsrc=ibmsearch_a&subtype=CA

https://www.ibm.com

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