Programmable assembly of colloidal particles using magnetic microwell templates.
Journal Article (Journal Article)
A substrate of thin micromagnets covered by a template of microwells is used to direct the assembly of superparamagnetic colloidal beads into two-dimensional arrays. It is confirmed that the magnetization of the micromagnets can direct beads to programmed locations on the substrate with assistance of externally applied magnetic fields. Empirical investigations on this topic were guided by mathematical models with the intent to elucidate the conditions that promote a single bead to be assembled in the desired microwells. To demonstrate that this technique is programmable, heterogeneous arrays of colored beads are produced.
Full Text
Duke Authors
Cited Authors
- Yellen, BB; Friedman, G
Published Date
- March 2004
Published In
Volume / Issue
- 20 / 7
Start / End Page
- 2553 - 2559
PubMed ID
- 15835123
Electronic International Standard Serial Number (EISSN)
- 1520-5827
International Standard Serial Number (ISSN)
- 0743-7463
Digital Object Identifier (DOI)
- 10.1021/la0352016
Language
- eng