US 11,866,847 B2
Systems and methods for disassembling two-dimensional van der Waals crystals into macroscopic monolayers and reassembling into artificial lattices
Fang Liu, New York, NY (US); Xiaoyang Zhu, New York, NY (US); James Hone, New York, NY (US); and Sang Hoon Chae, New York, NY (US)
Assigned to THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, New York, NY (US)
Filed by THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, New York, NY (US)
Filed on Nov. 25, 2020, as Appl. No. 17/105,105.
Claims priority of provisional application 62/963,839, filed on Jan. 21, 2020.
Claims priority of provisional application 62/944,753, filed on Dec. 6, 2019.
Prior Publication US 2021/0172087 A1, Jun. 10, 2021
Int. Cl. C30B 33/00 (2006.01); B32B 7/02 (2019.01); B32B 37/18 (2006.01); C30B 29/68 (2006.01); B32B 37/00 (2006.01); B32B 18/00 (2006.01); C30B 29/46 (2006.01); C23C 14/30 (2006.01); C23C 14/16 (2006.01); B32B 43/00 (2006.01); C01G 41/00 (2006.01); C01G 39/06 (2006.01)
CPC C30B 33/00 (2013.01) [B32B 7/02 (2013.01); B32B 18/00 (2013.01); B32B 37/025 (2013.01); B32B 37/18 (2013.01); B32B 43/006 (2013.01); C23C 14/16 (2013.01); C23C 14/30 (2013.01); C30B 29/46 (2013.01); C30B 29/68 (2013.01); B32B 2315/02 (2013.01); C01G 39/06 (2013.01); C01G 41/00 (2013.01); C01P 2004/24 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for generating one or more single crystal monolayers from two-dimensional van der Waals crystals, comprising:
providing a bulk material comprising a plurality of van der Waals crystal layers; and
exfoliating one or more single crystal monolayers of van der Waals crystal from the bulk material by applying a flexible and flat thermal release metal tape having a soluble protection layer and a metal layer to a surface of the bulk material;
wherein the flexible and flat metal thermal release tape has a surface root-mean-square roughness of less than 2 nm.