HapticV1, Main, Exploration, bibRecord, 003061

Holographic otoscope for nanodisplacement measurements of surfaces under dynamic excitation

Identifieur interne : 003061 ( Main/Exploration ); précédent : 003060; suivant : 003062

Holographic otoscope for nanodisplacement measurements of surfaces under dynamic excitation

Auteurs : J. M. Flores Oreno [États-Unis, Mexique] ; Cosme Furlong [États-Unis] ; John J. Rosowski [États-Unis] ; Ellery Harrington [États-Unis] ; Jeffrey T. Cheng [États-Unis] ; C. Scarpino [États-Unis] ; F. Mendoza Santoyo [Mexique]

Source :

Scanning [ 0161-0457 ] ; 2011-09.

RBID : ISTEX:DED27EF94B4A21AC594AC59EA5C39DE9A6D9F30B

English descriptors

KwdEn :
- digital holography, middle‐ear, optoelectronic holography, otology.

Abstract

We describe a novel holographic otoscope system for measuring nanodisplacements of objects subjected to dynamic excitation. Such measurements are necessary to quantify the mechanical deformation of surfaces in mechanics, acoustics, electronics, biology, and many other fields. In particular, we are interested in measuring the sound‐induced motion of biological samples, such as an eardrum. Our holographic otoscope system consists of laser illumination delivery (IS), optical head (OH), and image processing computer (IP) systems. The IS delivers the object beam (OB) and the reference beam (RB) to the OH. The backscattered light coming from the object illuminated by the OB interferes with the RB at the camera sensor plane to be digitally recorded as a hologram. The hologram is processed by the IP using the Fresnel numerical reconstruction algorithm, where the focal plane can be selected freely. Our holographic otoscope system is currently deployed in a clinic, and is packaged in a custom design. It is mounted in a mechatronic positioning system to increase its maneuverability degrees to be conveniently positioned in front of the object to be measured. We present representative results highlighting the versatility of our system to measure deformations of complex elastic surfaces in the wavelength scale including a copper foil membrane and postmortem tympanic membrane. SCANNING 33: 342–352, 2011. © 2011 Wiley Periodicals, Inc.

Url:

DOI: 10.1002/sca.20283

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">We describe a novel holographic otoscope system for measuring nanodisplacements of objects subjected to dynamic excitation. Such measurements are necessary to quantify the mechanical deformation of surfaces in mechanics, acoustics, electronics, biology, and many other fields. In particular, we are interested in measuring the sound‐induced motion of biological samples, such as an eardrum. Our holographic otoscope system consists of laser illumination delivery (IS), optical head (OH), and image processing computer (IP) systems. The IS delivers the object beam (OB) and the reference beam (RB) to the OH. The backscattered light coming from the object illuminated by the OB interferes with the RB at the camera sensor plane to be digitally recorded as a hologram. The hologram is processed by the IP using the Fresnel numerical reconstruction algorithm, where the focal plane can be selected freely. Our holographic otoscope system is currently deployed in a clinic, and is packaged in a custom design. It is mounted in a mechatronic positioning system to increase its maneuverability degrees to be conveniently positioned in front of the object to be measured. We present representative results highlighting the versatility of our system to measure deformations of complex elastic surfaces in the wavelength scale including a copper foil membrane and postmortem tympanic membrane. SCANNING 33: 342–352, 2011. © 2011 Wiley Periodicals, Inc.</div>
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Serveur d'exploration sur les dispositifs haptiques

Holographic otoscope for nanodisplacement measurements of surfaces under dynamic excitation

Holographic otoscope for nanodisplacement measurements of surfaces under dynamic excitation

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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