GRADIENT-INDEX PHONONIC CRYSTAL FLAT LENS AND DESIGN METHOD FOR SAME

WIPO Patent Application WO/2021/107461

A1

Various embodiments relate to a gradient-index phononic crystal flat lens which controls the behavior of an acoustic wave having a designated frequency, and includes at least one super cell in which layers are vertically laminated according to a target gradient index distribution, wherein each of the layers is composed of an aggregate in which unit cells having identically-sized scatterers in the center are arrayed in a horizontal direction. The at least one super cell may include dividing units which are provided between adjacent layers to the layer, and force the traveling direction of the acoustic wave traveling inside the gradient-index phononic crystal flat lens to be oriented in the horizontal direction. Various other embodiments are also possible.

CHOI WON JAE (KR)
KIM MISO (KR)
HYUN JAE YUB (KR)

PCT/KR2020/015759

June 03, 2021

November 11, 2020

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KOREA RES INST STANDARDS & SCI (KR)

G02B3/00

KR20190129570A	2019-11-20
US20130025961A1	2013-01-31
EP2933225A1	2015-10-21

HYUN JAEYUB , CHOI WONJAE , KIM MISO: "Gradient-index phononic crystals for highly dense flexural energy harvesting", APPLIED PHYSICS LETTERS, vol. 115, no. 17, 21 October 2019 (2019-10-21), pages 1 - 5, XP012241596, ISSN: 0003-6951, DOI: 10.1063/1.5111566
SZ-CHIN STEVEN LIN, TONY JUN HUANG, JIA-HONG SUN, TSUNG-TSONG WU: "Gradient-index phononic crystals", PHYSICAL REVIEW B, vol. 79, no. 9, 094302, 18 March 2009 (2009-03-18), pages 1 - 6, XP055815020, ISSN: 1098-0121, DOI: 10.1103/PhysRevB.79.094302

PCR INTELLECTUAL PROPERTY LAW FIRM (KR)

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