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Título: | Tapered silicon nanowires for enhanced nanomechanical sensing |
Autor: | Malvar, Óscar CSIC ORCID; Gil-Santos, Eduardo CSIC ORCID; Ruz Martínez, José Jaime CSIC ORCID; Ramos Vega, Daniel CSIC ORCID; Pini, Valerio CSIC ORCID; Fernández-Regúlez, Marta; Calleja, Montserrat CSIC ORCID ; Tamayo de Miguel, Francisco Javier CSIC ORCID; San Paulo, Álvaro CSIC ORCID | Fecha de publicación: | 2013 | Editor: | American Institute of Physics | Citación: | Applied Physics Letters 103: 033101 (2013) | Resumen: | We investigate the effect of controllably induced tapering on the resonant vibrations and sensing performance of silicon nanowires. Simple analytical expressions for the resonance frequencies of the first two flexural modes as a function of the tapering degree are presented. Experimental measurements of the resonance frequencies of singly clamped nanowires are compared with the theory. Our model is valid for any nanostructure with tapered geometry, and it predicts a reduction beyond two orders of magnitude of the mass detection limit for conical resonators as compared to uniform beams with the same length and diameter at the clamp. © 2013 AIP Publishing LLC. | Versión del editor: | http://dx.doi.org/10.1063/1.4813819 | URI: | http://hdl.handle.net/10261/132832 | DOI: | 10.1063/1.4813819 | Identificadores: | issn: 0003-6951 e-issn: 1077-3118 |
Aparece en las colecciones: | (IMN-CNM) Artículos (IMB-CNM) Artículos |
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silicon_nanowires_Malver.pdf | 1,51 MB | Adobe PDF | Visualizar/Abrir |
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