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Acoustic Fabrication via the Assembly and Fusion of Particles

2017

Article

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Acoustic assembly promises a route toward rapid parallel fabrication of whole objects directly from solution. This study reports the contact-free and maskless assembly, and fixing of silicone particles into arbitrary 2D shapes using ultrasound fields. Ultrasound passes through an acoustic hologram to form a target image. The particles assemble from a suspension along lines of high pressure in the image due to acoustic radiation forces and are then fixed (crosslinked) in a UV-triggered reaction. For this, the particles are loaded with a photoinitiator by solvent-induced swelling. This localizes the reaction and allows the bulk suspension to be reused. The final fabricated parts are mechanically stable and self-supporting.

Author(s): Melde, Kai and Choi, Eunjin and Wu, Zhiguang and Palagi, Stefano and Qiu, Tian and Fischer, Peer
Journal: Advanced Materials
Volume: 30
Number (issue): 3
Pages: 1704507
Year: 2017
Month: December
Day: 4

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: https://doi.org/10.1002/adma.201704507
Note: 1704507
URL: http://dx.doi.org/10.1002/adma.201704507

BibTex

@article{ADMA:ADMA201704507,
  title = {Acoustic Fabrication via the Assembly and Fusion of Particles},
  author = {Melde, Kai and Choi, Eunjin and Wu, Zhiguang and Palagi, Stefano and Qiu, Tian and Fischer, Peer},
  journal = {Advanced Materials},
  volume = {30},
  number = {3},
  pages = {1704507},
  month = dec,
  year = {2017},
  note = {1704507},
  url = {http://dx.doi.org/10.1002/adma.201704507},
  month_numeric = {12}
}