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http://hdl.handle.net/2289/4646Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Bandyopadhyay, Ranjini | - |
| dc.contributor.author | Liang, Dennis | - |
| dc.contributor.author | Colby, Ralph H. | - |
| dc.contributor.author | Harden, James L. | - |
| dc.contributor.author | Leheny, Robert L. | - |
| dc.date.accessioned | 2012-06-09T09:24:20Z | - |
| dc.date.available | 2012-06-09T09:24:20Z | - |
| dc.date.issued | 2005 | - |
| dc.identifier.citation | Physical Review Letters, 2005, Vol.94, p107801 | en |
| dc.identifier.issn | 0031-9007 | - |
| dc.identifier.issn | 1079-7114 (Online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/4646 | - |
| dc.description | Open Access. | en |
| dc.description.abstract | We report studies of the frequency dependent shear modulus, $G^*(\omega)=G'(\omega)+iG''(\omega)$, of the liquid crystal octylcyanobiphenyl (8CB) confined in a colloidal aerosil gel. With the onset of smectic order, $G'$ grows approximately linearly with decreasing temperature, reaching values that exceed by more than three orders of magnitude the values for pure 8CB. The modulus at low temperatures possesses a power-law component, $G^*(\omega) \sim \omega^\alpha$, with exponent $\alpha$ that approaches zero with increasing gel density. The amplitude of $G'$ and its variation with temperature and gel density indicate that the low temperature response is dominated by a dense population of defects in the smectic. In contrast, when the 8CB is isotropic or nematic, the modulus is controlled by the elastic behavior of the colloidal gel. | en |
| dc.language.iso | en | en |
| dc.publisher | American Physical Society | en |
| dc.relation.uri | http://arxiv.org/abs/cond-mat/0502454 | en |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevLett.94.107801 | en |
| dc.rights | 2005 American Physical Society | en |
| dc.title | Enhanced Elasticity and Soft Glassy Rheology of a Smectic in a Random Porous Environment | en |
| dc.type | Article | en |
| Appears in Collections: | Research Papers (SCM) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2005_PhysRevLett_V94_p107801.pdf Restricted Access | Open Access | 235.12 kB | Adobe PDF | View/Open Request a copy |
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