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Angle-dependent ultrasonic transmission through plates with subwavelength hole arrays

Héctor Estrada1, F Javier García de Abajo, Pilar Candelas

  • 1Centro de Tecnologías Físicas, Unidad Asociada ICMM-CSIC/UPV, Universidad Politécnica de Valencia, Avenida de los Naranjos s/n. 46022 Valencia, Spain.

Physical Review Letters
|April 28, 2009
PubMed

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Standing Waves in a Cavity01:28

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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by: