Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared

Rozin, Matthew J.; Rosen, David A.; Dill, Tyler J.; Tao, Andrea R.

doi:10.1038/ncomms8325

Cited by 88 publications

(95 citation statements)

References 28 publications

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“…[[qv: 9a]],36 During coherent electron oscillation, nanostructures with sharp corners facilitate charge separation more easily than rounded structures. This reduces the restoring force for the electron oscillation, leading to a longer resonance wavelength.…”

Section: Noble Metal/semiconductor Materials Systems For Plasmonic Phomentioning

confidence: 99%

Plasmon‐Mediated Solar Energy Conversion via Photocatalysis in Noble Metal/Semiconductor Composites

et al. 2016

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Plasmonics has remained a prominent and growing field over the past several decades. The coupling of various chemical and photo phenomenon has sparked considerable interest in plasmon‐mediated photocatalysis. Given plasmonic photocatalysis has only been developed for a relatively short period, considerable progress has been made in improving the absorption across the full solar spectrum and the efficiency of photo‐generated charge carrier separation. With recent advances in fundamental (i.e., mechanisms) and experimental studies (i.e., the influence of size, geometry, surrounding dielectric field, etc.) on plasmon‐mediated photocatalysis, the rational design and synthesis of metal/semiconductor hybrid nanostructure photocatalysts has been realized. This review seeks to highlight the recent impressive developments in plasmon‐mediated photocatalytic mechanisms (i.e., Schottky junction, direct electron transfer, enhanced local electric field, plasmon resonant energy transfer, and scattering and heating effects), summarize a set of factors (i.e., size, geometry, dielectric environment, loading amount and composition of plasmonic metal, and nanostructure and properties of semiconductors) that largely affect plasmonic photocatalysis, and finally conclude with a perspective on future directions within this rich field of research.

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Section: Noble Metal/semiconductor Materials Systems For Plasmonic Phomentioning

confidence: 99%

Plasmon‐Mediated Solar Energy Conversion via Photocatalysis in Noble Metal/Semiconductor Composites

et al. 2016

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“…This method is highly advantageous as the metamaterial assembly relies on colloidal properties. The interface between the Au film and Ag nanocubes exhibited extreme light confinement to optical cavities with dimensions less than 200 nm, however >98% of the signal is absorbed at the desired wavelength, representing an area for future optimization 82 . Genevet et al .…”

Section: Metamaterials and Photonic Crystalsmentioning

confidence: 99%

Utilizing the power of Cerenkov light with nanotechnology

2017

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The characteristic blue glow of Cerenkov luminescence (CL) arises from the interaction between a charged particle travelling faster than the phase velocity of light and a dielectric medium, such as water or tissue. As CL emanates from a variety of sources, such as cosmic events, particle accelerators, nuclear reactors and clinical radionuclides, it has been used in applications such as particle detection, dosimetry, and medical imaging and therapy. The combination of CL and nanoparticles for biomedicine has improved diagnosis and therapy, especially in oncological research. Although radioactive decay itself cannot be easily modulated, the associated CL can be through the use of nanoparticles, thus offering new applications in biomedical research. Advances in nanoparticles, metamaterials and photonic crystals have also yielded new behaviours of CL. Here, we review the physics behind Cerenkov luminescence and associated applications in biomedicine. We also show that by combining advances in nanotechnology and materials science with CL, new avenues for basic and applied sciences have opened.

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“…NSL has enabled the fabrication of structures such as silicon nanopillar arrays, photonic crystals, and plasmonic metasurfaces . However, most of the patterns created by NSL are periodic . Recently, Zheng and co‐workers have developed moiré nanosphere lithography (MNSL) to fabricate quasiperiodic moiré patterns .…”

Section: Fabrication Of Moiré Metasurfaces and Metamaterialsmentioning

confidence: 99%

Moiré Metamaterials and Metasurfaces

Zheng

2018

Advanced Optical Materials

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IntroductionOur ever-increasing knowledge of light-matter interactions has enabled the development of optical components and devices for light control. These range from macroscale mirrors for the Hubble Space Telescope to nanoscale optical cavities for onchip light sources. Devices made from conventional materials, however, enable limited light manipulation. For example, the most-skilled craftsmen of conventional lenses cannot exceed the diffraction limit of light to realize subwavelength focusing.Optical metamaterials and metasurfaces of microscale or nanoscale building blocks, also known as "meta-atoms," have emerged to overcome the limits of natural materials. Due to the reduced differences in length scale between electromagnetic waves and these building blocks, metamaterials and metasurfaces enhance light-matter interactions by orders. Advancements in modeling, nanofabrication, and characterization tools [1][2][3][4][5][6][7][8] have spawned metamaterials and metasurfaces with unprecedented light-manipulation capabilities, including subwavelength focusing, negative refraction, and superabsorption. [9][10][11][12][13][14][15] Optical metamaterials and metasurfaces often rely on the strong interactions between light and meta-atoms to manipulate light-propagation properties (e.g., phase, polarization, and amplitude). With the ability of surface plasmons to concentrate light at the nanoscale, plasmonic nanostructures enhance Optical metamaterials and metasurfaces enable versatile light manipulations. Advancements in modeling, nanofabrication, and characterization tools have led to the development of metamaterials and metasurfaces for many applications: energy conversion, biomedicine, and information technology. Recently, metamaterials and metasurfaces with moiré configurations have attracted strong interest due to their highly tunable optical responses and high-throughput fabrication. Herein, state-of-the-art moiré metamaterials and metasurfaces are reviewed. The presentation covers fabrication techniques, structure-property relationships, and applications in lasing and biomedical sensing. The review concludes with challenges and opportunities for moiré metamaterials and metasurfaces. www.advopticalmat.de metasurfaces which feature microscale and nanoscale metaatoms. Next, we discuss their properties and applications. We conclude with perspectives on challenges and opportunities.

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Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared

Cited by 88 publications

References 28 publications

Plasmon‐Mediated Solar Energy Conversion via Photocatalysis in Noble Metal/Semiconductor Composites

Plasmon‐Mediated Solar Energy Conversion via Photocatalysis in Noble Metal/Semiconductor Composites

Utilizing the power of Cerenkov light with nanotechnology

Moiré Metamaterials and Metasurfaces

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