Reference health

Acoustic focusing by coiling up space

20/20 checkable references clean · checked 2026-07-24

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

1 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 20 checked references that resolve

resolves10.1103/PhysRevE.71.036609

Gradient index metamaterials

resolves10.1103/PhysRevB.73.235119

Mirage and superbending effect in two-dimensional graded photonic crystals

resolves10.1063/1.2901684

Graded photonic crystals curve the flow of light: An experimental demonstration by the mirage effect

resolves10.1103/PhysRevB.84.195142

Extraordinary light focusing and Fourier transform properties of gradient-index metalenses

resolves10.1088/1367-2630/9/9/323

Acoustic metamaterials for new two-dimensional sonic devices

resolves10.1088/0022-3727/42/18/185505

Graded negative index lens with designable focal length by phononic crystal

resolves10.1063/1.3213361

Acoustic mirage in two-dimensional gradient-index phononic crystals

resolves10.1103/PhysRevB.79.094302

Gradient-index phononic crystals

resolves10.1063/1.3488349

Sound focusing by gradient index sonic lenses

resolves10.1063/1.3489373

Sonic gradient index lens for aqueous applications

resolves10.1063/1.3457447

Acoustic far-field focusing effect for two-dimensional graded negative refractive-index sonic crystals

resolves10.1103/PhysRevB.85.161103

Elastic shells with high-contrast material properties as acoustic metamaterial components

resolves10.1103/PhysRevB.84.024305

Design and measurements of a broadband two-dimensional acoustic lens

resolves10.1088/1367-2630/14/3/035011

Enhanced control of light and sound trajectories with three-dimensional gradient index lenses

resolves10.1126/science.289.5485.1734

Locally Resonant Sonic Materials

resolves10.1038/nmat1644

Ultrasonic metamaterials with negative modulus

resolves10.1088/1367-2630/9/3/045

One path to acoustic cloaking

resolves10.1103/PhysRevLett.108.114301

Extreme Acoustic Metamaterial by Coiling Up Space

resolves10.1103/PhysRevB.76.144302

Method for retrieving effective properties of locally resonant acoustic metamaterials

resolves10.1038/nphys1804

A holey-structured metamaterial for acoustic deep-subwavelength imaging

The 1 reference without a DOI — listed, not checked

no DOI — not checkedGradient-Index Optics: Fundamentals and Applications

What this badge says. CiteStamped means the CHECKABLE references of this work were clean at the dated check: each resolved to a known work in a public registry, and none carried a retraction notice at that time. It says nothing about the quality, findings, or importance of the work itself, and nothing about references deposited without a DOI.

checked 2026-07-24 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record

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