Manufacturing of Perfective Single Crystalline Metal Foils via Weak-Gravity and Hydrogen Maximization Aiming to Industrial Commercialization

Phuong V. Pham^1*

¹Department of physics, National Sun Yat-sen University, Kaohsiung, Taiwan

* Presenter:Phuong V. Pham, email:phuongpham@mail.nsysu.edu.tw

Single-crystalline metals (e.g., Cu(111), Ni(111)), with their distinctive symmetries, are the ideal medium for high-order molecular arrangement and the diminishing of grain boundaries, defect sites coupled with high anisotropy. Nevertheless, single crystalline metal foils have not been commercialized yet in the world market because (i) its unperfected polycrystalline ones that mainly affected to the growth quality of single crystalline 2D materials and (ii) consequently, led to unperfected synthesized 2D materials on unperfected polycrystalline substrates, (iii) making them not very high quality products and challenging to produce on large centimeter-scale. Here, we reveal a simple and inexpensive strategy as an alternative to conventional ones for manufacturing single crystalline metal foils. Miraculously, by miniaturization of grain boundary and promoting surface energy minimization during the rotation of the crystal lattice followed by the consumption of neighboring grains, the large-scale single-crystalline metal foils (Cu (111), Ni (111)) via vertically weak-gravity-assisted chemical vapor deposition annealing of polycrystalline metal foils. Additionally, the synthesis of single-crystalline monolayer graphene on single-crystalline metal foils (Cu (111), Ni (111)) is successfully fabricated in our Lab at Physics Department-NSYSU.

Keywords: Polycrystalline Metal Foil, Single Crystalline Metal Foil, Weak-Gravity-Assisted CVD, Horizontal Standing Annealing, Hydrogen Maximization