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dc.contributor.author Neogi, Arup
dc.contributor.author Walker, Ezekiel L.
dc.contributor.author Reyes-Contreras, Delfino
dc.contributor.author Jin, Yuqi
dc.date.accessioned 2020-02-21T23:34:27Z
dc.date.available 2020-02-21T23:34:27Z
dc.date.issued 2019-09-30
dc.identifier.issn 2470-1343
dc.identifier.uri http://hdl.handle.net/20.500.11799/105758
dc.description.abstract Solid phononic crystal (PnC) lenses were made active on infiltration with thermosensitive polymers to produce a thermoactuated hybrid solid lens with variable focusing. Acoustic lenses, both solid state and PnCbased, are passive elements with a fixed focal length. Their focal characteristics are functions of the lens structure or the arrangement of the PnC unit cell. Dispersion effects, liquid-filled membranes, and phase delay in a multi-element emitter have been used for variable focusing. The high thermal, electric, and electromagnetic sensitivity of the elastic properties of poly(vinyl alcohol) (PVA) poly(N-isopropylacrylamide) (PNIPAm)-based hydrogels enable them to operate as tunable solids. However, these solids do not have strong enough contrast with water or well-controlled shape parameters to function as standalone lenses. Here, a tunable hybrid solid ultrasonic lens is realized by combining a PnC lens with PVA-PNIPAm thermoacoustic hydrogel to modify the transmission and dispersion properties of transient acoustic waves. Variable focusing is demonstrated from 40 to 50 mm using the anomalous thermosensitivity of the elasticity and speed of sound of the hydrogel. es
dc.description.sponsorship NSF es
dc.language.iso eng es
dc.publisher ACS es
dc.rights openAccess es
dc.rights.uri http://creativecommons.org/licenses/by/4.0 es
dc.subject Acoustic lenses es
dc.subject Hydrogel es
dc.subject.classification CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA es
dc.title Tunable hybrid phononic crystal lens using thermo-acoustic polymers es
dc.type Artículo es
dc.provenance Científica es
dc.road Dorada es
dc.organismo Ciencias es
dc.ambito Internacional es
dc.relation.vol 4


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  • Título
  • Tunable hybrid phononic crystal lens using thermo-acoustic polymers
  • Autor
  • Neogi, Arup
  • Walker, Ezekiel L.
  • Reyes-Contreras, Delfino
  • Jin, Yuqi
  • Fecha de publicación
  • 2019-09-30
  • Editor
  • ACS
  • Tipo de documento
  • Artículo
  • Palabras clave
  • Acoustic lenses
  • Hydrogel
  • Los documentos depositados en el Repositorio Institucional de la Universidad Autónoma del Estado de México se encuentran a disposición en Acceso Abierto bajo la licencia Creative Commons: Atribución-NoComercial-SinDerivar 4.0 Internacional (CC BY-NC-ND 4.0)

Mostrar el registro sencillo del objeto digital

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