Determination of elastic constants of two-dimensional close-packed colloidal crystals
We present a noncontact, accurate, and efficient methodology for determination of elastic constants in two-dimensional colloidal crystals via the calculation of the local strain fluctuation of particles. The hexagonally close-packed colloidal crystals form from microsized particles subjected to an a...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 25(2009), 10 vom: 19. Mai, Seite 5432-6 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2009
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | We present a noncontact, accurate, and efficient methodology for determination of elastic constants in two-dimensional colloidal crystals via the calculation of the local strain fluctuation of particles. The hexagonally close-packed colloidal crystals form from microsized particles subjected to an alternating electric field. The elastic constants in the thermodynamic limit are obtained by the extrapolation of finite-size scaling of the elastic moduli as the functions of the frequency and field strength. It is found that the elastic constants in our system are larger than those in non-close-packed colloidal crystals reported before. This technique could be a rational method to study the elasticity of soft solids |
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| Beschreibung: | Date Completed 23.07.2009 Date Revised 12.05.2009 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la804301y |