Model-free measurement of the pair potential in colloidal fluids using optical microscopy
We report a straightforward, model-free approach for measuring pair potentials from particle-coordinate data, based on enforcing consistency between the pair distribution function measured separately by the distance-histogram and test-particle insertion routes. We demonstrate the method’s accuracy a...
| Main Authors: | , , |
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| Format: | Journal article |
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American Physical Society
2019
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| _version_ | 1797058161332453376 |
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| author | Stones, A Dullens, R Aarts, D |
| author_facet | Stones, A Dullens, R Aarts, D |
| author_sort | Stones, A |
| collection | OXFORD |
| description | We report a straightforward, model-free approach for measuring pair potentials from particle-coordinate data, based on enforcing consistency between the pair distribution function measured separately by the distance-histogram and test-particle insertion routes. We demonstrate the method’s accuracy and versatility in simulations of simple fluids, before applying it to an experimental system composed of superparamagnetic colloidal particles. The method will enable experimental investigations into many-body interactions and allow for effective coarse graining of interactions from simulations. |
| first_indexed | 2024-03-06T19:46:39Z |
| format | Journal article |
| id | oxford-uuid:22838dae-95c4-4afd-9207-acdb5d58980e |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:46:39Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:22838dae-95c4-4afd-9207-acdb5d58980e2022-03-26T11:39:16ZModel-free measurement of the pair potential in colloidal fluids using optical microscopyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:22838dae-95c4-4afd-9207-acdb5d58980eSymplectic Elements at OxfordAmerican Physical Society2019Stones, ADullens, RAarts, DWe report a straightforward, model-free approach for measuring pair potentials from particle-coordinate data, based on enforcing consistency between the pair distribution function measured separately by the distance-histogram and test-particle insertion routes. We demonstrate the method’s accuracy and versatility in simulations of simple fluids, before applying it to an experimental system composed of superparamagnetic colloidal particles. The method will enable experimental investigations into many-body interactions and allow for effective coarse graining of interactions from simulations. |
| spellingShingle | Stones, A Dullens, R Aarts, D Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title | Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title_full | Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title_fullStr | Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title_full_unstemmed | Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title_short | Model-free measurement of the pair potential in colloidal fluids using optical microscopy |
| title_sort | model free measurement of the pair potential in colloidal fluids using optical microscopy |
| work_keys_str_mv | AT stonesa modelfreemeasurementofthepairpotentialincolloidalfluidsusingopticalmicroscopy AT dullensr modelfreemeasurementofthepairpotentialincolloidalfluidsusingopticalmicroscopy AT aartsd modelfreemeasurementofthepairpotentialincolloidalfluidsusingopticalmicroscopy |