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Recently Published Articles

  1. Broadband Light Out-Coupling Enhancement of Flexible Organic Light-Emitting Diodes Using Biomimetic Quasirandom Nanostructures

    Rong Wang, Lu-Hai Xu, Yan-Qing Li, Lei Zhou, Chi Li, Qing-Dong Ou, Jing-De Chen, Su Shen and Jian-Xin Tang

    Article first published online: 29 OCT 2014 | DOI: 10.1002/adom.201400391

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    A broadband light extraction scheme using the biomimetic quasirandom nanostructures is demonstrated in a quest toward efficient light manipulation for flexible organic light-emitting diodes. The enhanced out-coupling of waveguided light and superior color stability for wide viewing angles can be achieved simultaneously with the broadening of the periodicity and the random orientation for emission directionality.

  2. Large-Scale Green Synthesis of Fluorescent Carbon Nanodots and Their Use in Optics Applications

    Jie Wang, Fei Peng, Yimei Lu, Yiling Zhong, Siyi Wang, Meifeng Xu, Xiaoyuan Ji, Yuanyuan Su, Liangsheng Liao and Yao He

    Article first published online: 29 OCT 2014 | DOI: 10.1002/adom.201400307

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    A 25 min microwave reaction using 20 mL milk achieves about 0.3 g of fluorescent carbon nanodots (C-dots). Furthermore, the as-prepared C-dots can serve as high-quality fluorescent stains and are highly efficacious for a variety of optics-related applications, such as in vitro and in vivo bioimaging, printing inks, and sensors.

  3. Ultrabroadband Plasmonic Absorber for Terahertz Waves

    Yong Zhi Cheng, Withawat Withayachumnankul, Aditi Upadhyay, Daniel Headland, Yan Nie, Rong Zhou Gong, Madhu Bhaskaran, Sharath Sriram and Derek Abbott

    Article first published online: 28 OCT 2014 | DOI: 10.1002/adom.201400368

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    Localized surface plasmon resonances are employed for ultrabroadband absorption at terahertz frequencies. The absorber created from a patterned silicon substrate can achieve a bandwidth of 90%. The broadband performance and structural simplicity are ideal for various emerging applications.

  4. Self-Assembly of Cationic Dipeptides Forming Rectangular Microtubes and Microrods with Optical Waveguiding Properties

    Qi Li, Hongchao Ma, Anhe Wang, Yi Jia, Luru Dai and Junbai Li

    Article first published online: 27 OCT 2014 | DOI: 10.1002/adom.201400308

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    Rectangular microtubes and microrods are obtained using a slow solvent-evaporation method that induces the self-assembly of cationic diphenylalanine peptide (CDP). The microrods and microtubes have similar structures, but the microrods are single-crystalline. The microrods can be made fluorescent, revealing evident optical waveguiding properties.

  5. Uniaxial-isotropic Metamaterials by Three-Dimensional Split-Ring Resonators

    Che-Chin Chen, Atsushi Ishikawa, Yu-Hsiang Tang, Ming-Hua Shiao, Din Ping Tsai and Takuo Tanaka

    Article first published online: 24 OCT 2014 | DOI: 10.1002/adom.201400316

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    A uniaxial-isotropic IR metamaterial consisting of fourfold-symmetric 3D split-ring resonators (SRRs) formed by a metal stress-driven self-folding method is fabricated and characterized. Unambiguous isotropic characteristics are demonstrated for any lateral rotation, polarization, and incident angle up to 40°. The corresponding numerical simulations reveal that the interplay of electric and magnetic interactions of the 3D SRR plays a crucial role in the bi-anisotropic responses.