Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers
Atomic Force Microscopy (AFM) measurements are extensively used for a detailed understanding ofmolecular and surface forces. In this study, we present a technique for measuring such forces, using an AFM cantilever attached with a porous gamma alumina nanoparticle aggregate. The modified cantilever w...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Elsevier Science SA
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/20014 |
| _version_ | 1848750191454191616 |
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| author | Das, T. Becker, Thomas Nair, Balagopal |
| author_facet | Das, T. Becker, Thomas Nair, Balagopal |
| author_sort | Das, T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Atomic Force Microscopy (AFM) measurements are extensively used for a detailed understanding ofmolecular and surface forces. In this study, we present a technique for measuring such forces, using an AFM cantilever attached with a porous gamma alumina nanoparticle aggregate. The modified cantilever was used to measure the forces of interaction of the aggregate with hydrophilic and hydrophobic surfaces. A strong force of attraction was observed between the aggregate and hydrophilic surfaces when the aggregate was kept dry. However, the force of interaction on the aggregate in wet form (water filled in pores) was larger when the adjoining surface had hydrophobic characteristics. The results presented in this study show the versatility of the current technique and indicate its usefulness in directly characterizing hydrophilic/ hydrophobic properties of nano-scale surfaces and patterns. |
| first_indexed | 2025-11-14T07:32:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-20014 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:32:54Z |
| publishDate | 2009 |
| publisher | Elsevier Science SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-200142017-09-13T16:00:10Z Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers Das, T. Becker, Thomas Nair, Balagopal Atomic Force Microscopy (AFM) measurements are extensively used for a detailed understanding ofmolecular and surface forces. In this study, we present a technique for measuring such forces, using an AFM cantilever attached with a porous gamma alumina nanoparticle aggregate. The modified cantilever was used to measure the forces of interaction of the aggregate with hydrophilic and hydrophobic surfaces. A strong force of attraction was observed between the aggregate and hydrophilic surfaces when the aggregate was kept dry. However, the force of interaction on the aggregate in wet form (water filled in pores) was larger when the adjoining surface had hydrophobic characteristics. The results presented in this study show the versatility of the current technique and indicate its usefulness in directly characterizing hydrophilic/ hydrophobic properties of nano-scale surfaces and patterns. 2009 Journal Article http://hdl.handle.net/20.500.11937/20014 10.1016/j.ejcnurse.2008.12.001 Elsevier Science SA fulltext |
| spellingShingle | Das, T. Becker, Thomas Nair, Balagopal Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title | Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title_full | Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title_fullStr | Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title_full_unstemmed | Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title_short | Measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on Atomic Force Microscopy cantilevers |
| title_sort | measurements on hydrophobic and hydrophilic surfaces using a porous gamma alumina nanoparticle aggregate mounted on atomic force microscopy cantilevers |
| url | http://hdl.handle.net/20.500.11937/20014 |