Journal article
Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
Scientific reports, v 11(1), pp 11042-11042
26 May 2021
PMID: 34040047
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
External fields are commonly applied to accelerate colloidal crystallization; however, accelerated self-assembly kinetics can negatively impact the quality of crystal structures. We show that cyclically applied electric fields can produce high quality colloidal crystals by annealing local disorder. We find that the optimal off-duration for maximum annealing is approximately one-half of the characteristic melting half lifetime of the crystalline phase. Local six-fold bond orientational order grows more rapidly than global scattering peaks, indicating that local restructuring leads global annealing. Molecular dynamics simulations of cyclically activated systems show that the ratio of optimal off-duration for maximum annealing and crystal melting time is insensitive to particle interaction details. This research provides a quantitative relationship describing how the cyclic application of fields produces high quality colloidal crystals by cycling at the fundamental time scale for local defect rearrangements; such understanding of dynamics and kinetics can be applied for reconfigurable colloidal assembly.
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Details
- Title
- Accelerated annealing of colloidal crystal monolayers by means of cyclically applied electric fields
- Creators
- Peng-Kai Kao - Department of Chemical Engineering, University of Michigan, North Campus Research Complex, Building 10 - A151, 2800 Plymouth Road, Ann Arbor, MI, 48109, USABryan J VanSaders - University of Michigan–Ann ArborSharon C Glotzer - University of Michigan–Ann ArborMichael J Solomon - University of Michigan–Ann ArborUniv. of Michigan, Ann Arbor, MI (United States)
- Publication Details
- Scientific reports, v 11(1), pp 11042-11042
- Publisher
- Springer Nature
- Grant note
- DE-SC0013562 / Basic Energy Sciences
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000659148400034
- Scopus ID
- 2-s2.0-85106904015
- Other Identifier
- 991021879783204721
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- Web of Science research areas
- Chemistry, Physical