Handle URI:
http://hdl.handle.net/10754/598035
Title:
Dynamics and Rheology of Soft Colloidal Glasses
Authors:
Wen, Yu Ho; Schaefer, Jennifer L.; Archer, Lynden A.
Abstract:
© 2015 American Chemical Society. The linear viscoelastic (LVE) spectrum of a soft colloidal glass is accessed with the aid of a time-concentration superposition (TCS) principle, which unveils the glassy particle dynamics from in-cage rattling motion to out-of-cage relaxations over a broad frequency range 10-13 rad/s < ω < 101 rad/s. Progressive dilution of a suspension of hairy nanoparticles leading to increased intercenter distances is demonstrated to enable continuous mapping of the structural relaxation for colloidal glasses. In contrast to existing empirical approaches proposed to extend the rheological map of soft glassy materials, i.e., time-strain superposition (TSS) and strain-rate frequency superposition (SRFS), TCS yields a LVE master curve that satis fies the Kramers-Kronig relations which interrelate the dynamic moduli for materials at equilibrium. The soft glassy rheology (SGR) model and literature data further support the general validity of the TCS concept for soft glassy materials.
Citation:
Wen YH, Schaefer JL, Archer LA (2015) Dynamics and Rheology of Soft Colloidal Glasses. ACS Macro Letters 4: 119–123. Available: http://dx.doi.org/10.1021/mz5006662.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Macro Letters
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
20-Jan-2015
DOI:
10.1021/mz5006662
Type:
Article
ISSN:
2161-1653; 2161-1653
Sponsors:
This work was supported by the National Science Foundation, Award No. DMR-1006323 and by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). Facilities available through the Cornell Center for Materials Research (CCMR) were used for this study. The SAXS experiments were conducted at the Cornell High Energy Synchrotron Source (CHESS) which is supported by the National Science Foundation and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-1332208.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorWen, Yu Hoen
dc.contributor.authorSchaefer, Jennifer L.en
dc.contributor.authorArcher, Lynden A.en
dc.date.accessioned2016-02-25T13:11:25Zen
dc.date.available2016-02-25T13:11:25Zen
dc.date.issued2015-01-20en
dc.identifier.citationWen YH, Schaefer JL, Archer LA (2015) Dynamics and Rheology of Soft Colloidal Glasses. ACS Macro Letters 4: 119–123. Available: http://dx.doi.org/10.1021/mz5006662.en
dc.identifier.issn2161-1653en
dc.identifier.issn2161-1653en
dc.identifier.doi10.1021/mz5006662en
dc.identifier.urihttp://hdl.handle.net/10754/598035en
dc.description.abstract© 2015 American Chemical Society. The linear viscoelastic (LVE) spectrum of a soft colloidal glass is accessed with the aid of a time-concentration superposition (TCS) principle, which unveils the glassy particle dynamics from in-cage rattling motion to out-of-cage relaxations over a broad frequency range 10-13 rad/s < ω < 101 rad/s. Progressive dilution of a suspension of hairy nanoparticles leading to increased intercenter distances is demonstrated to enable continuous mapping of the structural relaxation for colloidal glasses. In contrast to existing empirical approaches proposed to extend the rheological map of soft glassy materials, i.e., time-strain superposition (TSS) and strain-rate frequency superposition (SRFS), TCS yields a LVE master curve that satis fies the Kramers-Kronig relations which interrelate the dynamic moduli for materials at equilibrium. The soft glassy rheology (SGR) model and literature data further support the general validity of the TCS concept for soft glassy materials.en
dc.description.sponsorshipThis work was supported by the National Science Foundation, Award No. DMR-1006323 and by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). Facilities available through the Cornell Center for Materials Research (CCMR) were used for this study. The SAXS experiments were conducted at the Cornell High Energy Synchrotron Source (CHESS) which is supported by the National Science Foundation and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-1332208.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleDynamics and Rheology of Soft Colloidal Glassesen
dc.typeArticleen
dc.identifier.journalACS Macro Lettersen
dc.contributor.institutionCornell University, Ithaca, United Statesen
kaust.grant.numberKUS-C1-018-02en
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