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Physical Review Letters, ISSN 0031-9007, 04/2013, Volume 110, Issue 17, p. 175501
We report the experimental demonstration of a broadband negative refractive index obtained in a labyrinthine acoustic metamaterial structure. Two different... 
PHYSICS, MULTIDISCIPLINARY
Journal Article
Journal of Applied Physics, ISSN 0021-8979, 03/2011, Volume 109, Issue 5, pp. 054906 - 054906-6
We present the experimental realization and characterization of a broadband acoustic metamaterial with strongly anisotropic effective mass density. The... 
PHYSICS, APPLIED | MODULUS | Waveguides | Anisotropy | Analysis | Sound-waves
Journal Article
Nature materials, ISSN 1476-4660, 2014, Volume 13, Issue 4, pp. 352 - 355
... omnidirectional acoustic ground cloak Lucian Zigoneanu, Bogdan-Ioan Popa and Steven A. Cummer* The control of sound propagation and reection has always been the goal... 
CHEMISTRY, PHYSICAL | PHYSICS, CONDENSED MATTER | PHYSICS, APPLIED | INVISIBILITY CLOAK | MATERIALS SCIENCE, MULTIDISCIPLINARY | Materials science | Acoustics | Sound design | Design engineering | Broadband | Control systems | Transformations | Sound | Metamaterials | Devices | Three dimensional
Journal Article
Physical review letters, ISSN 1079-7114, 2011, Volume 106, Issue 25, p. 253901
We present the design, fabrication, and performance analysis for a class of two-dimensional acoustic cloaking coatings in air. Our approach takes advantage of... 
DENSITY | OPTICAL CLOAK | PHYSICS, MULTIDISCIPLINARY
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 07/2011, Volume 84, Issue 2
We describe the design, fabrication, and measurement of a 2D broadband gradient index acoustic lens in air. The index of refraction is tuned by controlling the... 
PHYSICS, CONDENSED MATTER
Journal Article
Physical review. B, Condensed matter and materials physics, ISSN 1550-235X, 2013, Volume 88, Issue 2
We describe and demonstrate an architecture for active acoustic metamaterials whose effective material parameters can be tuned independently over a wide range... 
PHYSICS, CONDENSED MATTER | DESIGN | PHYSICS, APPLIED | CLOAKING | MATERIALS SCIENCE, MULTIDISCIPLINARY
Journal Article
Geophysical research letters, ISSN 0094-8276, 2014, Volume 41, Issue 22, pp. 7777 - 7784
We report on the development of an easily deployable LF near‐field interferometric‐time of arrival (TOA) 3‐D Lightning Mapping Array applied to imaging of... 
lightning discharges | LF emission | lightning imaging | stepped and dart leaders | interferometer/TOA | SYSTEM | VHF RADIO PICTURES | FLASHES | GEOSCIENCES, MULTIDISCIPLINARY | TOA | interferometer | Lightning | Correlation | Methodology | Emission | Imaging techniques | Mapping | Lightning location | Ground stations | Maps | Imaging | Stepped | Very high frequencies | Frequency | Links | Sensors | Lightning flashes | Interferometry | VHF | Arrays | Three dimensional
Journal Article
Journal of Geophysical Research: Space Physics, ISSN 0148-0227, 09/2012, Volume 117, Issue A9, p. n/a
Sprites are structured high altitude optical emissions produced by lightning‐driven electric fields. Both strong positive and negative cloud to ground flashes... 
sprite | INITIATION | VIDEO | ELVES | ASTRONOMY & ASTROPHYSICS | STROKES
Journal Article
The Journal of the Acoustical Society of America, ISSN 0001-4966, 2012, Volume 132, Issue 4, pp. 2823 - 2833
Journal Article
Physical Review B (Condensed Matter and Materials Physics), ISSN 1098-0121, 07/2013, Volume 88, Issue 2
We describe and demonstrate an architecture for active acoustic metamaterials whose effective material parameters can be tuned independently over a wide range... 
Transducers | Unit cell | Architecture | Refraction | Acoustics | Metamaterials | Density | Bulk modulus
Journal Article
Journal of Geophysical Research: Space Physics, ISSN 0148-0227, 09/2012, Volume 117, Issue A9, p. n/a
Journal Article
Geophysical research letters, ISSN 0094-8276, 11/2014, Volume 41, Issue 22, pp. 7777 - 7784
Journal Article
01/2013, ISBN 1303021846, Volume 74, Issue 8
Acoustic metamaterials are engineered materials that were extensively investigated over the last years mainly because they promise properties otherwise hard or... 
Acoustic absorption
Book Chapter
Acoustic metamaterials are engineered materials that were extensively investigated over the last years mainly because they promise properties otherwise hard or... 
Electrical engineering | transformation acoustics | Materials Science | cloak | active acoustic metamaterials | acoustic metamaterials | metamaterials | Acoustics
Dissertation
Grain-boundary (GB) diffusion creep (Coble creep) is the dominant deformation mechanism for the fine-grained materials under low stress and at elevated... 
Mechanical Engineering
Dissertation
12/2012
We report the experimental demonstration of broadband negative refractive index obtained in a labyrinthine acoustic metamaterial structure. Two different... 
Journal Article
American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD, 2012, pp. 521 - 528
Conference Proceeding
41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012, 2012, Volume 2, pp. 1555 - 1562
Conference Proceeding
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