Advanced Optical Materials

Cover image for Vol. 1 Issue 3

March 2013

Volume 1, Issue 3

Pages 195–271

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      Optical Transmission: A Subwavelength Extraordinary-Optical-Transmission Channel in Babinet Metamaterials (Advanced Optical Materials 3/2013) (page 195)

      W.-C. Chen, N. I. Landy, K. Kempa and W. J. Padilla

      Version of Record online: 21 MAR 2013 | DOI: 10.1002/adom.201370017

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      W. J. Padilla and co-workers report on page 221 extremely subwavelength extraordinary optical transmission (EOT) using Babinet metamaterial apertures. The front cover image depicts enhanced transmission and the importance of the strong coupling between light and surface and bulk plasmons, where the geometry of the aperture plays a crucial role.

  2. Inside Front Cover

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      Liquid Crystals: Deformation-Free, Microsecond Electro-Optic Tuning of Liquid Crystals (Advanced Optical Materials 3/2013) (page 196)

      Yo Inoue, Hiroyuki Yoshida, Hitoshi Kubo and Masanori Ozaki

      Version of Record online: 21 MAR 2013 | DOI: 10.1002/adom.201370018

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      The macroscopic alignment of nanosized liquid crystal domains in a polymer matrix with helical order is demonstrated by H. Yoshida and co-workers on page 256. The alignment can be switched to induce a change in the effective refractive index. Nanosizing of liquid crystal domains enables access to fast reorientation dynamics (˜10 μs), while helical order is retained in the polymer matrix, resulting in deformationfree tuning of the Bragg reflection band.

  3. Back Cover

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      Metallic Nanopillars: Selective Plasmonic Platforms Based on Nanopillars to Enhance Vibrational Sum-Frequency Generation Spectroscopy (Advanced Optical Materials 3/2013) (page 274)

      Dan Lis, Yves Caudano, Marie Henry, Sophie Demoustier-Champagne, Etienne Ferain and Francesca Cecchet

      Version of Record online: 21 MAR 2013 | DOI: 10.1002/adom.201370019

      Thumbnail image of graphical abstract

      Molecules adsorbed on metallic nanopillars give an enhanced vibrational sum-frequency generation (SFG) signal when a localized surface plasmon resonance is excited. The metallic nanopillars, created on page 244 by D. Lis et al., possess two plasmon modes that can be selectively excited by either incident visible or generated SFG polarized laser beams. Depending on which mode is excited, the molecules adsorb either onto the vertical nanopillar wall, on top of it, or on the flat substrate.

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  5. Contents

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  6. PROGRESS REPORTS

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    1. Epitaxially Self-Assemblied Quantum Dot Pairs (pages 201–214)

      Jiang Wu, Xian Hu, Jihoon Lee, Eun-Soo Kim and Zhiming M. Wang

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/adom.201300020

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      Progress on the fabrication of self-assembled quantum dot pairs (QDPs) is reviewed. Coupled QDPs are promising to serve as building blocks for future quantum information technology. This report assembles recent developments on the fabrication of both vertically aligned and laterally aligned QDPs.

  7. COMMUNICATIONS

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    1. Near-Infrared Spectrally Selective Plasmonic Electrochromic Thin Films (pages 215–220)

      Guillermo Garcia, Raffaella Buonsanti, Anna Llordes, Evan L. Runnerstrom, Amy Bergerud and Delia J. Milliron

      Version of Record online: 22 FEB 2013 | DOI: 10.1002/adom.201200051

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      A plasmonic electrochromic effect in which electrochemical doping reversibly modulates near-infrared surface plasmon absorption of aluminium-doped zinc oxide and tin-doped indium oxide nanocrystals is reported. Optical performance, switching kinetics, and cycling durability point to high-performance NIR selective plasmonic electrochromic coatings based on earth-abundant materials.

    2. A Subwavelength Extraordinary-Optical-Transmission Channel in Babinet Metamaterials (pages 221–226)

      W.-C. Chen, N. I. Landy, K. Kempa and W. J. Padilla

      Version of Record online: 12 FEB 2013 | DOI: 10.1002/adom.201200016

      Thumbnail image of graphical abstract

      Babinet metamaterials exhibit higher transmission efficiencies at lower frequencies than traditional extraordinary-optical-transmission designs and provide an additional parameter for the creation of more efficient aperture structures, which may be useful for future applications in sensing and energy harvesting.

    3. Macroscopic Polarized Emission from Aligned Hybrid Gold Nanorods Embedded in a Polyvinyl Alcohol Film (pages 227–231)

      Siyun Liu, Jiafang Li and Zhi-Yuan Li

      Version of Record online: 12 FEB 2013 | DOI: 10.1002/adom.201200043

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      Macroscopic polarized emission is realized from aligned hybrid gold nanorods (HGNRs) embedded in a polyvinyl alcohol film. The alignment of HGNRs is achieved by employing a film stretch method. Under a circularly polarized pump, the emission polarization of the stretched film shows a dipole-like pattern while the original film shows an isotropic emission polarization.

    4. Color-Tuned, Highly Emissive Dicyanodistyrylbenzene Single Crystals: Manipulating Intermolecular Stacking Interactions for Spontaneous and Stimulated Emission Characteristics (pages 232–237)

      Seong-Jun Yoon, Shinto Varghese, Sang Kyu Park, Reinhold Wannemacher, Johannes Gierschner and Soo Young Park

      Version of Record online: 27 FEB 2013 | DOI: 10.1002/adom.201200064

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      Solid-state, luminescent, aggregation-induced enhanced emission (AIEE)-active dicyanodistyrylbenzene-based organic π-conjugated materials, i.e. α-MODCS, α-MODBDCS, β-MODCS, and β-MODBDCS, are designed. In virtue of the systematically substituted modular molecular systems combined with thorough structural analyses, photophysical studies, and electronic structure calculations, the spontaneous and stimulated emission properties are quantified and rationalized from a perspective of well-established structure–property correlations.

  8. Frontispiece

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      CdTe Nanocrystals: Dynamic Effect of Solvation on the Optical Properties of a CdTe Nanocrystal (Advanced Optical Materials 3/2013) (page 238)

      Osman Barış Malcıoğlu and Jean-Yves Raty

      Version of Record online: 21 MAR 2013 | DOI: 10.1002/adom.201370022

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      Molecular dynamics simulations are used to establish a correlation between the time evolution of spectral features with various structural components of a ligand-stabilized CdTe quantum dot. The localization of charge oscillations due to light absorption is investigated by O. B. Malcıoğlu et al. on page 239 before and after embedding the quantum dot in an explicit solvent environment. The image shows a snapshot from the solvated molecular dynamics trajectory. The response charge density of a quantum dot to two different frequencies of irradiation is depicted as colored glass bubbles.

  9. FULL PAPERS

    1. Top of page
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    3. Inside Front Cover
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    1. Dynamic Effect of Solvation on the Optical Properties of a CdTe Nanocrystal (pages 239–243)

      Osman Barış Malcıoğlu and Jean-Yves Raty

      Version of Record online: 12 FEB 2013 | DOI: 10.1002/adom.201200037

      Thumbnail image of graphical abstract

      Using TDDFT and ab-initio molecular dynamics, a correlation is established between the time evolution of spectral features with various structural components of a ligand-stabilized CdTe quantum dot. The localization of charge oscillations due to light absorption is investigated before and after embedding the quantum dot in an explicit solvent environment.

    2. Selective Plasmonic Platforms Based on Nanopillars to Enhance Vibrational Sum-Frequency Generation Spectroscopy (pages 244–255)

      Dan Lis, Yves Caudano, Marie Henry, Sophie Demoustier-Champagne, Etienne Ferain and Francesca Cecchet

      Version of Record online: 15 FEB 2013 | DOI: 10.1002/adom.201200034

      Thumbnail image of graphical abstract

      Molecules adsorbed on metallic nanopillars give an enhanced vibrational sum-frequency generation (SFG) signal when a localized surface plasmon resonance is excited. The nanopillars possess two plasmon modes that can be selectively excited by either the incident visible or the generated SFG polarized laser beams. Depending on which mode is excited, one can probe molecules adsorbed at different regions of the nanostructured surface selectively, i.e., the vertical pillar sidewall, the pillar top, or the flat surface between the pillars. Owing to the largely improved sensitivity combined with a specific spatial selectivity, a plasmon-enhanced SFG boosts the versatility of SFG spectroscopy with regard to specific chemical sensing.

    3. Deformation-Free, Microsecond Electro-Optic Tuning of Liquid Crystals (pages 256–263)

      Yo Inoue, Hiroyuki Yoshida, Hitoshi Kubo and Masanori Ozaki

      Version of Record online: 12 FEB 2013 | DOI: 10.1002/adom.201200028

      Thumbnail image of graphical abstract

      Microsecond electro-optic tuning of the Bragg reflection band is demonstrated using a polymer–liquid crystal nanocomposite. Liquid crystalline order promotes formation of nanodomains in the composite, allowing scattering free-tuning of the effective refractive index without deforming the macroscopic helical structure. Nanoconfinement of the liquid crystal enables ultra-fast switching, reaching a decay time of 4 μs.

    4. Unraveling Bright Molecule-Like State and Dark Intrinsic State in Green-Fluorescence Graphene Quantum Dots via Ultrafast Spectroscopy (pages 264–271)

      Lei Wang, Shou-Jun Zhu, Hai-Yu Wang, Ya-Feng Wang, Ya-Wei Hao, Jun-Hu Zhang, Qi-Dai Chen, Yong-Lai Zhang, Wei Han, Bai Yang and Hong-Bo Sun

      Version of Record online: 22 FEB 2013 | DOI: 10.1002/adom.201200020

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      Graphene quantum dots (GQDs) are a kind of recently emerging carbon nanomaterial. However, to date, the picture of this fascinating photoluminescence is still under discussion. Here, a detailed ultrafast dynamics study on green-fluorescence GQDs is presented, which depicts the electronic structure and origin of photoluminescence. These results will be of great benefit to understand the photophysics in GQDs and other carbon nanodots.

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