| Full text | |
| Author(s): Show less - |
Dehn, M. H.
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Arseneau, D. J.
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Boeni, P.
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Bridges, M. D.
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Buck, T.
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Cortie, D. L.
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Fleming, D. G.
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Kelly, J. A.
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MacFarlane, W. A.
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MacLachlan, M. J.
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McFadden, R. M. L.
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Morris, G. D.
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Wang, P. -X.
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Xiao, J.
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Zamarion, V. M.
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Kiefl, R. F.
Total Authors: 16
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| Document type: | Journal article |
| Source: | Journal of Chemical Physics; v. 145, n. 18 NOV 14 2016. |
| Web of Science Citations: | 3 |
| Abstract | |
Chemisorption of muonium onto the surface of gold nanoparticles has been observed. Muonium (mu(+)e(-)), a light hydrogen-like atom, reacts chemically with uncapped 7 nm gold nanoparticles embedded in mesoporous silica (SBA-15) with a strong temperature-dependent rate. The addition rate is fast enough to allow coherent spin transfer into a diamagnetic muon state on the nanoparticle surface. The muon is well established as a sensitive probe of static or slowly fluctuating magnetic fields in bulk matter. These results represent the first muon spin rotation signal on a nanoparticle surface or any metallic surface. Only weak magnetic effects are seen on the surface of these Au nanoparticles consistent with Pauli paramagnetism. Published by AIP Publishing. (AU) | |
| FAPESP's process: | 14/01025-0 - Development of new chemical sensors exploring chirality of silver and gold nanoparticles inside chiral nematic mesoporous silica |
| Grantee: | Vitor de Moraes Zamarion |
| Support Opportunities: | Scholarships abroad - Research |