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Título: | Optical Transduction for Vertical Nanowire Resonators |
Autor: | Molina Fernández, Juan CSIC ORCID; Ramos Vega, Daniel CSIC ORCID; Gil-Santos, Eduardo CSIC ORCID; Escobar, Javier Enrique CSIC; Ruz Martínez, José Jaime CSIC ORCID; Tamayo de Miguel, Francisco Javier CSIC ORCID; San Paulo, Álvaro CSIC ORCID; Calleja, Montserrat CSIC ORCID | Palabras clave: | Semiconductor Nanowires Silicon Nanowires Nanomechanical Resonators Nanomechanical Sensors Nanoelectromechanical Systems (NEMS) |
Fecha de publicación: | 19-mar-2020 | Editor: | American Chemical Society | Citación: | Nano Letters 20(4): 2359-2369 (2020) | Resumen: | We describe an optical transduction mechanism to measure the flexural mode vibrations of vertically aligned nanowires on a flat substrate with high sensitivity, linearity, and ease of implementation. We demonstrate that the light reflected from the substrate when a laser beam strikes it parallel to the nanowires is modulated proportionally to their vibration, so that measuring such modulation provides a highly efficient resonance readout. This mechanism is applicable to single nanowires or arrays without specific requirements regarding their geometry or array pattern, and no fabrication process besides the nanowire generation is required. We show how to optimize the performance of this mechanism by characterizing the split flexural modes of vertical silicon nanowires in their full dynamic range and up to the fifth mode order. The presented transduction approach is relevant for any application of nanowire resonators, particularly for integrating nanomechanical sensing in functional substrates based on vertical nanowires for biological applications. | Versión del editor: | https://doi.org/10.1021/acs.nanolett.9b04909 | URI: | http://hdl.handle.net/10261/207624 | DOI: | 10.1021/acs.nanolett.9b04909 | ISSN: | 1530-6984 | E-ISSN: | 1530-6992 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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Optical Transduction_Molina.pdf | 5,68 MB | Adobe PDF | Visualizar/Abrir |
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