Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite Charge''
In a recent Letter, Gurovitch and Sens studied the adsorption of a weakly charged polyelectrolyte chain onto an oppositely charged colloidal particle. By using a variational technique they found that the colloidal particle can adsorb a polymer of higher charge than its own, and thus be ``overcharged...
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| Formatua: | Journal article |
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1999
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| _version_ | 1826260073849028608 |
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| author | Golestanian, R |
| author_facet | Golestanian, R |
| author_sort | Golestanian, R |
| collection | OXFORD |
| description | In a recent Letter, Gurovitch and Sens studied the adsorption of a weakly charged polyelectrolyte chain onto an oppositely charged colloidal particle. By using a variational technique they found that the colloidal particle can adsorb a polymer of higher charge than its own, and thus be ``overcharged.'' I argue that the observed overcharging by a factor of 16/5 is indeed an artifact of the approximations involved in the study. Moreover, I show that the existence of overcharging depends crucially on the choice of the trial wave function, contrary to their claim. |
| first_indexed | 2024-03-06T18:59:50Z |
| format | Journal article |
| id | oxford-uuid:1326fdfa-e054-41ba-b56c-47051f563a7f |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:59:50Z |
| publishDate | 1999 |
| record_format | dspace |
| spelling | oxford-uuid:1326fdfa-e054-41ba-b56c-47051f563a7f2022-03-26T10:12:07ZComment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite Charge''Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1326fdfa-e054-41ba-b56c-47051f563a7fSymplectic Elements at Oxford1999Golestanian, RIn a recent Letter, Gurovitch and Sens studied the adsorption of a weakly charged polyelectrolyte chain onto an oppositely charged colloidal particle. By using a variational technique they found that the colloidal particle can adsorb a polymer of higher charge than its own, and thus be ``overcharged.'' I argue that the observed overcharging by a factor of 16/5 is indeed an artifact of the approximations involved in the study. Moreover, I show that the existence of overcharging depends crucially on the choice of the trial wave function, contrary to their claim. |
| spellingShingle | Golestanian, R Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite Charge'' |
| title | Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite
Charge'' |
| title_full | Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite
Charge'' |
| title_fullStr | Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite
Charge'' |
| title_full_unstemmed | Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite
Charge'' |
| title_short | Comment on ``Adsorption of Polyelectrolyte onto a Colloid of Opposite
Charge'' |
| title_sort | comment on adsorption of polyelectrolyte onto a colloid of opposite charge |
| work_keys_str_mv | AT golestanianr commentonadsorptionofpolyelectrolyteontoacolloidofoppositecharge |