Directional superficial photofluidization for deterministic shaping of complex 3d architectures

Seungwoo Lee, Hong Suk Kang, Antonio Ambrosio, Jung Ki Park, Lorenzo Marrucci

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)


The fabrication of micro- and nanostructures is one of the cornerstones of current materials science and technology. There is a strong interest in processing methods capable of manufacturing engineered complex structures on a large area. A method that is gaining a growing attention in this context is based on surface reshaping of photosensitive materials, such as certain azobenzene derivatives by way of a process of light-induced mass migration, also described as athermal photofluidization. Here, we apply this method to prestructured substrate, converting simple periodic structures initially patterned only in two dimensions into complex-shaped three-dimensional (3D) structures by a single processing step over a large area. The optical variables of the irradiating beam are used to gain unprecedented deterministic control on the resulting 3D architectures. We also provide some initial demonstrations of the potential application of this novel shaping method, including unidirectional wetting surfaces and micro- and nanoscaled fluidic channel manufactured with it.

Original languageEnglish
Pages (from-to)8209-8217
Number of pages9
JournalACS Applied Materials and Interfaces
Issue number15
Publication statusPublished - 2015 Apr 22
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.


  • complex structures
  • directional photofluidization
  • fluidic channels
  • soft matter
  • unidirectional wetting

ASJC Scopus subject areas

  • Materials Science(all)


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