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Experiments on Metamaterials with Negative Effective Static Compressibility

Qu, Jingyuan 1,2; Gerber, Alexander 1; Mayer, Frederik 1,2; Kadic, Muamer 1; Wegener, Martin 1,2
1 Institut für Angewandte Physik (APH), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


The volume of ordinary materials decreases in response to a pressure increase exerted by a surrounding gas or liquid, i.e., the material volume compressibility is positive. Recently, poroelastic metamaterial architectures have been suggested theoretically that allow for an unusual negative effective static volume compressibility—which appears to be forbidden for reasons of energy conservation at first sight. The challenge in the three-dimensional (3D) fabrication of these blueprints lies in the necessary many hollow 3D crosses sealed by thin membranes, which we realize in this work by using 3D laser microlithography combined with a serendipitous mechanism. By using optical-microscopy cross-correlation analysis, we determine an extraordinarily large negative metamaterial effective volume compressibility of κeff=−0.8%  bar−1=−80  GPa−1 under pressure control.

Verlagsausgabe §
DOI: 10.5445/IR/1000078448
Veröffentlicht am 08.01.2018
DOI: 10.1103/PhysRevX.7.041060
Zitationen: 31
Zitationen: 33
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Nanotechnologie (INT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2160-3308
KITopen-ID: 1000078448
HGF-Programm 43.23.01 (POF III, LK 01) Advanced Optical Lithography+Microscopy
Erschienen in Physical review / X
Verlag American Physical Society (APS)
Band 7
Heft 4
Seiten 041060
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