A Universal and Ultrasensitive Vectorial Nanomechanical Sensor For Imaging 2D Force Fields
| Autor: | Benjamin Pigeau, O. Arcizet, Philippe Poncharal, Pascal Vincent, Laure Mercier de Lépinay, Benjamin Besga |
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| Přispěvatelé: | Nano-Optique et Forces (NOF ), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Characteristic length
Biomedical Engineering Nanowire Physics::Optics Bioengineering 02 engineering and technology 01 natural sciences Optics 0103 physical sciences Miniaturization General Materials Science [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Electrical and Electronic Engineering [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 010306 general physics Topology (chemistry) Brownian motion Physics Force field (physics) business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Transverse plane Trajectory 0210 nano-technology business |
| Zdroj: | Nature Nanotechnology Nature Nanotechnology, Nature Publishing Group, 2016, 12 (2), pp.156-162. ⟨10.1038/nnano.2016.193⟩ |
| ISSN: | 1748-3387 1748-3395 |
| Popis: | International audience; The miniaturization of force probes into nanomechanical oscillators enables ultrasensitive investigations of forces on dimensions smaller than their characteristic length scales. It also unravels the vectorial character of the force field and how its topology impacts the measurement. Here we present an ultrasensitive method for imaging two-dimensional vectorial force fields by optomechanically following the bidimensional Brownian motion of a singly clamped nanowire. This approach relies on angular and spectral tomography of its quasi-frequency-degenerated transverse mechanical polarizations: immersing the nanoresonator in a vectorial force field not only shifts its eigenfrequencies but also rotates the orientation of the eigenmodes, as a nanocompass. This universal method is employed to map a tunable electrostatic force field whose spatial gradients can even dominate the intrinsic nanowire properties. Enabling vectorial force field imaging with demonstrated sensitivities of attonewton variations over the nanoprobe Brownian trajectory will have a strong impact on scientific exploration at the nanoscale. |
| Databáze: | OpenAIRE |
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