A Universal and Ultrasensitive Vectorial Nanomechanical Sensor For Imaging 2D Force Fields - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nature Nanotechnology Année : 2016

A Universal and Ultrasensitive Vectorial Nanomechanical Sensor For Imaging 2D Force Fields

Benjamin Pigeau
Olivier Arcizet

Résumé

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.
Fichier principal
Vignette du fichier
document.pdf (6.96 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01978566 , version 1 (22-01-2019)

Identifiants

Citer

Laure Mercier de Lépinay, Benjamin Pigeau, Benjamin Besga, Pascal Vincent, Philippe Poncharal, et al.. A Universal and Ultrasensitive Vectorial Nanomechanical Sensor For Imaging 2D Force Fields. Nature Nanotechnology, 2016, 12 (2), pp.156-162. ⟨10.1038/nnano.2016.193⟩. ⟨hal-01978566⟩
69 Consultations
36 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More