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Field Emission from an Array of Free-standing Metallic Nanowires |
| ZHANG Geng-Min1;Emmanuel ROY2;LIU Hong-Wen1;LIU Wei-Min1;HOU Shi-Min1;Kui YU-ZHANG2;XUE Zeng-Quan1 |
| 1Department of Electronics, Peking University, Beijing 100871
2Dynamique des Transferts aux Interfaces (DTI-CNRS), Faculté des Sciences, Université de Reims, 51687 Reims Cedex 02, France
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| Cite this article: |
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ZHANG Geng-Min, Emmanuel ROY, LIU Hong-Wen et al 2002 Chin. Phys. Lett. 19 1016-1018 |
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Abstract Arrays of single crystalline gold nanowires were synthesized
electrochemically in porous polycarbonate membranes. The polycarbonate membrane was then removed to obtain freestanding nanowires for field emission measurements. The turn-on electric field strength for field emission is found to be lower than 2V/μm. The actual electric field that extracted electrons out of the gold nanowires is estimated to be about 103 times higher than the field directly expected in the model of a parallel plate condenser. The availability of the field emission is therefore attributed to the strong electric field at the tips resulting from small curvature radius of the gold nanowires.
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| Keywords:
79.70.+q
81.07.-b
85.45.Db
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Published: 01 July 2002
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| PACS: |
79.70.+q
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(Field emission, ionization, evaporation, and desorption)
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81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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85.45.Db
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(Field emitters and arrays, cold electron emitters)
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