Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials
Abstract Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-03-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-020-03296-y |
| _version_ | 1797706361231900672 |
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| author | Maureen L. Nietiadi Yudi Rosandi Herbert M. Urbassek |
| author_facet | Maureen L. Nietiadi Yudi Rosandi Herbert M. Urbassek |
| author_sort | Maureen L. Nietiadi |
| collection | DOAJ |
| description | Abstract Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface energy. We study the effect of surface hydroxylation on silica nanoparticle collisions by atomistic simulation, using the REAX potential that allows for bond breaking and formation. We find that the bouncing velocity is reduced by more than an order of magnitude compared to clean nanoparticle collisions. |
| first_indexed | 2024-03-12T05:50:06Z |
| format | Article |
| id | doaj.art-01f3956bf0634293b1ababcc3caf17bb |
| institution | Directory Open Access Journal |
| issn | 1556-276X |
| language | English |
| last_indexed | 2024-03-12T05:50:06Z |
| publishDate | 2020-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-01f3956bf0634293b1ababcc3caf17bb2023-09-03T05:08:49ZengSpringerOpenNanoscale Research Letters1556-276X2020-03-011511610.1186/s11671-020-03296-yBouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX PotentialsMaureen L. Nietiadi0Yudi Rosandi1Herbert M. Urbassek2Physics Department and Research Center OPTIMAS, University KaiserslauternDepartment of Geophysics, Universitas PadjadjaranPhysics Department and Research Center OPTIMAS, University KaiserslauternAbstract Clean silica surfaces have a high surface energy. In consequence, colliding silica nanoparticles will stick rather than bounce over a wide range of collision velocities. Often, however, silica surfaces are passivated by adsorbates, in particular water, which considerably reduce the surface energy. We study the effect of surface hydroxylation on silica nanoparticle collisions by atomistic simulation, using the REAX potential that allows for bond breaking and formation. We find that the bouncing velocity is reduced by more than an order of magnitude compared to clean nanoparticle collisions.http://link.springer.com/article/10.1186/s11671-020-03296-ySilicaHydroxylationCluster collisionsMolecular dynamicsNanoparticles |
| spellingShingle | Maureen L. Nietiadi Yudi Rosandi Herbert M. Urbassek Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials Nanoscale Research Letters Silica Hydroxylation Cluster collisions Molecular dynamics Nanoparticles |
| title | Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials |
| title_full | Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials |
| title_fullStr | Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials |
| title_full_unstemmed | Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials |
| title_short | Bouncing of Hydroxylated Silica Nanoparticles: an Atomistic Study Based on REAX Potentials |
| title_sort | bouncing of hydroxylated silica nanoparticles an atomistic study based on reax potentials |
| topic | Silica Hydroxylation Cluster collisions Molecular dynamics Nanoparticles |
| url | http://link.springer.com/article/10.1186/s11671-020-03296-y |
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