Author(s): Jianfeng Wu, Binghao Ng, Haidong Liang, Mark B. H. Breese, Minghui Hong, Stefan A. Maier, Herbert O. Moser, and Ortwin Hess

In recent years metamaterials have afforded high optical anisotropy, beyond the levels available using naturally occurring materials—but with limited spectral bandwidth. The authors have produced flexible gold “metafoils” of subwavelength thickness that sort circularly polarized light with very high contrast, over a broad frequency range that could be extended to include the important infrared “fingerprint” region used routinely for molecular spectroscopy. These metafoils can be made using established hot-embossing and nanoimprinting processes for cost-effective mass manufacture.

[Phys. Rev. Applied 2, 014005] Published Fri Jul 18, 2014

http://link.aps.org/doi/10.1103/PhysRevApplied.2.014005

Author(s): J. Zhang, K. F. MacDonald, and N. I. Zheludev
[Phys. Rev. B 89, 239901] Published Fri Jun 06, 2014

http://link.aps.org/doi/10.1103/PhysRevB.89.239901

Author(s): Carlo Forestiere, Luca Dal Negro, and Giovanni Miano

We present a theory for the cloaking of arbitrarily shaped objects and demonstrate electromagnetic scattering cancellation through designed homogeneous coatings. First, in the small-particle limit, we expand the dipole moment of a coated object in terms of its resonant modes. By zeroing the numerato...

[Phys. Rev. B 89, 205120] Published Thu May 22, 2014

http://link.aps.org/doi/10.1103/PhysRevB.89.205120

Author(s): Xin Zhang, Haitao Liu, and Ying Zhong

We build up a microscopic description of the surface Bloch mode (SBM) on metallic surfaces patterned with a periodic array of subwavelength holes. The SBM also is called a spoof surface plasmon when metals approach perfect electric conductors at terahertz or microwave frequencies. In the description...

[Phys. Rev. B 89, 195431] Published Wed May 21, 2014

http://link.aps.org/doi/10.1103/PhysRevB.89.195431

Author(s): Romain Fleury and Andrea Al`u

We study the possibility of controlling the propagation of ballistic electrons using an electronic metamaterial with zero quantum index of refraction. This is obtained by tailoring the band structure of a semiconductor superlattice to exhibit a Dirac cone at the center of the Brillouin zone, creatin...

[Phys. Rev. B 90, 035138] Published Tue Jul 29, 2014

http://link.aps.org/doi/10.1103/PhysRevB.90.035138

Author(s): Sergei V. Zhukovsky, Viktoriia E. Babicheva, Andrey B. Evlyukhin, Igor E. Protsenko, Andrei V. Lavrinenko, and Alexander V. Uskov

Photovoltaics are garnering new attention given rising energy costs. A numerical model shows how metallic nanoparticles in a uniform semiconductor matrix can efficiently produce a directional current from a uniform light source.

[Phys. Rev. X 4, 031038] Published Wed Sep 03, 2014

http://link.aps.org/doi/10.1103/PhysRevX.4.031038

Author(s): Alena V. Shchelokova, Dmitry S. Filonov, Polina V. Kapitanova, and Pavel A. Belov

We study the magnetic topological transition of the isofrequency curves in the wave vector space from a closed ellipsoid to an open hyperboloid in a metamaterial based on artificial transmission lines. In the radio frequency band we directly measure the emission pattern of a point source placed in t...

[Phys. Rev. B 90, 115155] Published Tue Sep 30, 2014

http://link.aps.org/doi/10.1103/PhysRevB.90.115155

Author(s): Daniel Torrent, Yan Pennec, and Bahram Djafari-Rouhani

An effective medium theory for resonant and nonresonant metamaterials for flexural waves in thin plates is presented. The theory provides closed-form expressions for the effective mass density, rigidity, and Poisson's ratio of arrangements of isotropic scatterers in thin plates, valid for low freque...

[Phys. Rev. B 90, 104110] Published Mon Sep 29, 2014

http://link.aps.org/doi/10.1103/PhysRevB.90.104110

Author(s): Nian-Hai Shen, Philippe Tassin, Thomas Koschny, and Costas M. Soukoulis

Graphene exhibits unique material properties, and in electromagnetic wave technology it raises the prospect of devices miniaturized down to the atomic length scale. Here we study split-ring resonator metamaterials made from graphene and we compare them to gold-based metamaterials. We find that graph...

[Phys. Rev. B 90, 115437] Published Mon Sep 29, 2014

http://link.aps.org/doi/10.1103/PhysRevB.90.115437

Author(s): V. G. Kravets, F. Schedin, G. Pisano, B. Thackray, P. A. Thomas, and A. N. Grigorenko

We study optical properties of optomagnetic metamaterials consisting of regular arrays of single and double Au nanodots (nanopillars). Using a combination of data from variable angle spectroscopic ellipsometry, transmission, and reflection measurements, we identify localized plasmon resonances of go...

[Phys. Rev. B 90, 125445] Published Fri Sep 26, 2014

http://link.aps.org/doi/10.1103/PhysRevB.90.125445

Author(s): I~nigo Liberal, I~nigo Ederra, Ram'on Gonzalo, and Richard W. Ziolkowski

Resonant nanoparticles allow devices to be constructed to selectively concentrate, guide, or scatter light in unique ways—for example, to make highly efficient solar cells or transparent displays. In this work, scientists develop a method to intentionally design nanoparticles with desired characteristics. This approach provides a promising new tool, which the authors demonstrate by designing a novel nanoparticle laser.

[Phys. Rev. Applied 1, 044002] Published Thu May 15, 2014

http://link.aps.org/doi/10.1103/PhysRevApplied.1.044002

Author(s): Mohammad Parvinnezhad Hokmabadi, David S. Wilbert, Patrick Kung, and Seongsin M. Kim

Applications of terahertz radiation include security imaging, nondestructive testing, novel spectroscopic applications, and skin cancer diagnostics. In this work, a “stereometamaterial” constructed from geometrically placed copper rings acts as a perfect absorber and exhibits rotationally asymmetric absorption behavior. Mimicking chiral molecules found in nature, this device offers new possibilities for customized functionality at terahertz frequencies.

[Phys. Rev. Applied 1, 044003] Published Thu May 15, 2014

http://link.aps.org/doi/10.1103/PhysRevApplied.1.044003

Author(s): Shang-Chi Jiang, Xiang Xiong, Yuan-Sheng Hu, Yu-Hui Hu, Guo-Bin Ma, Ru-Wen Peng, Cheng Sun, and Mu Wang

Metamaterials, artificial structures with unexpected properties, only function over a limited spectral window. Scientists have recently determined that the technique of combining a metallic metamaterial with a dielectric interlayer creates a device that modulates light over a wide range of frequencies.

[Phys. Rev. X 4, 021026] Published Thu May 15, 2014

http://link.aps.org/doi/10.1103/PhysRevX.4.021026

Author(s): Massimo Moccia, Giuseppe Castaldi, Salvatore Savo, Yuki Sato, and Vincenzo Galdi

Artificially engineered materials—metamaterials—typically alter only one heat or electromagnetic parameter at once. Researchers test a metamaterial that behaves simultaneously like a thermal concentrator and an electrical invisibility cloak.

[Phys. Rev. X 4, 021025] Published Mon May 12, 2014

http://link.aps.org/doi/10.1103/PhysRevX.4.021025

Author(s): Salvatore Campione, Alexander Benz, John F. Klem, Michael B. Sinclair, Igal Brener, and Filippo Capolino

Strong light-matter coupling has recently been demonstrated in subwavelength volumes by coupling engineered optical transitions in semiconductor heterostructures (e.g., quantum wells) to metasurface resonances via near fields. It has also been shown that different resonator shapes may lead to differ...

[Phys. Rev. B 89, 165133] Published Mon Apr 28, 2014

http://link.aps.org/doi/10.1103/PhysRevB.89.165133

Author(s): M. S. Mirmoosa, Y. Ra’di, V. S. Asadchy, C. R. Simovski, and S. A. Tretyakov

Scientists combine metals and ferrites to construct metamaterial particles that transform electric and magnetic fields in a controllable manner, producing nonreciprocal light scattering and other counterintuitive properties. These materials could be used in future exotic applications such as perfect electromagnetic isolators or thin-sheet phase shifters.

[Phys. Rev. Applied 1, 034005] Published Mon Apr 28, 2014

http://link.aps.org/doi/10.1103/PhysRevApplied.1.034005

Author(s): Meng Xiao, Z. Q. Zhang, and C. T. Chan

Surface impedance of a photonic material governs how an impinging light wave behaves at its surface, whereas its bulk “band structure” determines what wave modes can propagate in it. Is there a surface-to-bulk correspondence? A new study of one-dimensional photonic crystals indeed uncovers a rigorous fundamental relationship between the two.

[Phys. Rev. X 4, 021017] Published Fri Apr 25, 2014

http://link.aps.org/doi/10.1103/PhysRevX.4.021017

Author(s): Paloma A. Huidobro, Xiaopeng Shen, J. Cuerda, Esteban Moreno, L. Martin-Moreno, F. J. Garcia-Vidal, Tie Jun Cui, and J. B. Pendry

Surface plasmons, electromagnetic fields generated by the charge oscillations at the surface of a light-illuminated metallic nanoparticle, are typically described in terms of effective electric dipoles and their dynamics. Scientists discover that adding periodic grooves to the surface of subwavelength metallic disks creates localized surface plasmons of magnetic character in addition to the typical electric ones.

[Phys. Rev. X 4, 021003] Published Thu Apr 03, 2014

http://link.aps.org/doi/10.1103/PhysRevX.4.021003

Author(s): S. Br^ul'e, E. H. Javelaud, S. Enoch, and S. Guenneau

Materials engineered at the micro- and nanometer scales have had a tremendous and lasting impact in photonics and phononics. At much larger scales, natural soils civil engineered at decimeter to meter scales may interact with seismic waves when the global properties of the medium are modified, or al...

[Phys. Rev. Lett. 112, 133901] Published Mon Mar 31, 2014

http://link.aps.org/doi/10.1103/PhysRevLett.112.133901

Author(s): Aditya Jain, Philippe Tassin, Thomas Koschny, and Costas M. Soukoulis

Metamaterials—or artificial electromagnetic materials—can create media with properties unattainable in nature, but mitigating dissipation is a key challenge for their further development. Here, we demonstrate a low-loss metamaterial by exploiting dark bound states in dielectric inclusions coupled to...

[Phys. Rev. Lett. 112, 117403] Published Thu Mar 20, 2014

http://link.aps.org/doi/10.1103/PhysRevLett.112.117403