Fracture of jammed colloidal suspensions
Concentrated colloidal suspensions display dramatic rises in viscosity, leading to jamming and granulation, with increasing shear rate. It has been proposed that these effects result from inter particle friction, as lubrication forces are overcome. This suggests the jamming of concentrated colloidal...
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| Format: | Article |
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Nature Publishing Group
2015
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| Online Access: | https://eprints.nottingham.ac.uk/31721/ |
| _version_ | 1848794260730544128 |
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| author | Smith, M.I. |
| author_facet | Smith, M.I. |
| author_sort | Smith, M.I. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Concentrated colloidal suspensions display dramatic rises in viscosity, leading to jamming and granulation, with increasing shear rate. It has been proposed that these effects result from inter particle friction, as lubrication forces are overcome. This suggests the jamming of concentrated colloidal suspensions should exhibit some shared phenomenology with macroscopic granular systems where friction leads to two different types of jammed state. Here we show that transient rheological measurements can be used to probe the processes of granulation in concentrated colloidal suspensions. Our results support the idea that frictional contacts are created between jammed particles. The jamming behaviour displays two qualitatively different regimes separated by a critical strain rate with qualitatively different types of fracture/break up behaviour. In the lower strain rate regime, it is found that vibrations can be used to control jamming and granulation, resulting in a flowable fluid. |
| first_indexed | 2025-11-14T19:13:22Z |
| format | Article |
| id | nottingham-31721 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:13:22Z |
| publishDate | 2015 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-317212020-05-04T17:16:56Z https://eprints.nottingham.ac.uk/31721/ Fracture of jammed colloidal suspensions Smith, M.I. Concentrated colloidal suspensions display dramatic rises in viscosity, leading to jamming and granulation, with increasing shear rate. It has been proposed that these effects result from inter particle friction, as lubrication forces are overcome. This suggests the jamming of concentrated colloidal suspensions should exhibit some shared phenomenology with macroscopic granular systems where friction leads to two different types of jammed state. Here we show that transient rheological measurements can be used to probe the processes of granulation in concentrated colloidal suspensions. Our results support the idea that frictional contacts are created between jammed particles. The jamming behaviour displays two qualitatively different regimes separated by a critical strain rate with qualitatively different types of fracture/break up behaviour. In the lower strain rate regime, it is found that vibrations can be used to control jamming and granulation, resulting in a flowable fluid. Nature Publishing Group 2015-09-16 Article PeerReviewed Smith, M.I. (2015) Fracture of jammed colloidal suspensions. Scientific Reports, 5 . 14175/1-14175/7. ISSN 2045-2322 http://www.nature.com/articles/srep14175 doi:10.1038/srep14175 doi:10.1038/srep14175 |
| spellingShingle | Smith, M.I. Fracture of jammed colloidal suspensions |
| title | Fracture of jammed colloidal suspensions |
| title_full | Fracture of jammed colloidal suspensions |
| title_fullStr | Fracture of jammed colloidal suspensions |
| title_full_unstemmed | Fracture of jammed colloidal suspensions |
| title_short | Fracture of jammed colloidal suspensions |
| title_sort | fracture of jammed colloidal suspensions |
| url | https://eprints.nottingham.ac.uk/31721/ https://eprints.nottingham.ac.uk/31721/ https://eprints.nottingham.ac.uk/31721/ |