Effect of topological patterning on self-rolling of nanomembranes

Cheng Chen, Pengfei Song, Fanchao Meng, Pengfei Ou, Xinyu Liu, Jun Song

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The effects of topological patterning (i.e., grating and rectangular patterns) on the self-rolling behaviors of heteroepitaxial strained nanomembranes have been systematically studied. An analytical modeling framework, validated through finite-element simulations, has been formulated to predict the resultant curvature of the patterned nanomembrane as the pattern thickness and density vary. The effectiveness of the grating pattern in regulating the rolling direction of the nanomembrane has been demonstrated and quantitatively assessed. Further to the rolling of nanomembranes, a route to achieve predictive design of helical structures has been proposed and showcased. The present study provides new knowledge and mechanistic guidance towards predictive control and tuning of roll-up nanostructures via topological patterning.

Original languageEnglish
Article number345301
Issue number34
Publication statusPublished - 14 Jun 2018
Externally publishedYes


  • anisotropic
  • helical structures
  • roll-up
  • strained nanomembranes
  • topological patterning

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