Ultrasonic Lens Based on a Subwavelength Slit Surrounded by Grooves

The lensing capabilities of a single subwavelength slit surrounded by a finite array of grooves milled into a brass plate is presented. The modulation of the beam intensity of this ultrasonic lens can be adjusted by varying the groove depth. Numerical simulations as well as experimental validations...

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Detalles Bibliográficos
Autores principales: Gomez-Lozano, Vicente, Candelas, Pilar, Belmar, Francisco, Rubio, Constanza, Uris, Antonio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2014
Materias:
Letter
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4063062/
https://www.ncbi.nlm.nih.gov/pubmed/24854059
http://dx.doi.org/10.3390/s140508821
Descripción
Sumario:The lensing capabilities of a single subwavelength slit surrounded by a finite array of grooves milled into a brass plate is presented. The modulation of the beam intensity of this ultrasonic lens can be adjusted by varying the groove depth. Numerical simulations as well as experimental validations at 290 kHz are shown. The experimental results are in good agreement with the numerical simulations. This system is believed to have potential applications for medical ultrasound fields such as tomography and therapy.

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