Direct‐Write Freeform Colloidal Assembly
Name
10.1002-adma.201803620.pdf
Size
1.18 MB
Format
Adobe PDF
Checksum (MD5)
dd6baf0a669c9c30cb2b32842d5e7fd1
Author(s)
Tan, Alvin T. L.
Beroz, Justin
Kolle, Mathias
Hart, A. John
Date Issued
August 30, 2018
Journal
Advanced Materials
Publisher
Wiley
Citation
Tan, A. T. L., Beroz, J., Kolle, M., Hart, A. J., Adv. Mater. 2018, 30, 1803620.
Version
Author's final manuscript
Abstract
Colloidal assembly is an attractive means to control material properties via hierarchy of particle composition, size, ordering, and macroscopic form. However, despite well-established methods for assembling colloidal crystals as films and patterns on substrates, and within microscale confinements such as droplets or microwells, it has not been possible to build freeform colloidal crystal structures. Direct-write colloidal assembly, a process combining the bottom-up principle of colloidal self-assembly with the versatility of direct-write 3D printing, is introduced in the present study. By this method, centimeter-scale, free-standing colloidal structures are built from a variety of materials. A scaling law that governs the rate of assembly is derived; macroscale structural color is tailored via the size and crystalline ordering of polystyrene particles, and several freestanding structures are built from silica and gold particles. Owing to the diversity of colloidal building blocks and the means to control their interactions, direct-write colloidal assembly could therefore enable novel composites, photonics, electronics, and other materials and devices.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1002/adma.201803620
