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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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Colossal grain growth yields single-crystal metal foils by contact-free annealing

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Title
Colossal grain growth yields single-crystal metal foils by contact-free annealing
Author
Jin, SunghwanHuang, MingKwon, YoungwooZhang, LeiningLi, Bao-WenOh, SangjunDong, JichenLuo, DaBiswal, MandakiniCunning, Benjamin VBakharev, Pavel VMoon, InyoungYoo, Won JongCamacho-Mojica, Dulce CKim, Yong-JinLee, Sun HwaWang, BinSeong, Won KyungSaxena, ManavDing, FengShin, Hyung-JoonRuoff, Rodney S.
Issue Date
201810
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v., no., pp.eaao3373 -
Abstract
Single-crystal metals have unique properties due to the absence of grain boundaries and strong anisotropy. Commercial single-crystal metals are usually synthesized by bulk crystal growth or by deposition of thin films onto substrates, and they are expensive and small. We prepare extremely large single-crystal metal foils by ‘contact-free annealing’ from commercial polycrystalline foils. The colossal grain growth (up to 32 cm2) is achieved by minimizing contact stresses, resulting in a preferred in-plane and out-of-plane crystal orientation, and is driven by surface energy minimization during the rotation of the crystal lattice followed by ‘consumption’ of neighboring grains. Industrial scale production of single-crystal metal foils is possible from this discovery.
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DOI
http://dx.doi.org/10.1126/science.aao3373
ISSN
0036-8075
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