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  1. A Light Sensitive Nanogenerator for Self-Powered UV Detection with Two Measuring Ranges

    Li Cheng, Youbin Zheng, Qi Xu and Yong Qin

    Version of Record online: 27 OCT 2016 | DOI: 10.1002/adom.201600623

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    An integrated UV sensor with two measuring ranges for self-powered UV light detection is fabricated, which itself can simultaneously harvest the mechanical energy from the environment and quantitatively detect the intensity of UV light as a self-powered sensor without any storage circuit or external measurement instruments. This work contributes towards the development and application of nanogenerators and self-powered nanosystems.

  2. High-Q Plasmonic Fano Resonance for Multiband Surface-Enhanced Infrared Absorption of Molecular Vibrational Sensing

    Govind Dayal, Xin Yu Chin, Cesare Soci and Ranjan Singh

    Version of Record online: 24 OCT 2016 | DOI: 10.1002/adom.201600559

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    A multiband high-Q plasmonic metasurface with tunable line-width and line-shape is utilized to amplify the infrared vibrational signal of nearly all the functional groups of poly(methyl methacrylate). It is shown that plasmon–vibrational mode coupling is stronger for Fano resonances than the dipolar resonances due to the steeper dispersion of the asymmetric Fano resonances.

  3. Programmable Microfluidic Synthesis of Over One Thousand Uniquely Identifiable Spectral Codes

    Huy Q. Nguyen, Brian C. Baxter, Kara Brower, Camilo A. Diaz-Botia, Joseph L. DeRisi, Polly M. Fordyce and Kurt S. Thorn

    Version of Record online: 18 OCT 2016 | DOI: 10.1002/adom.201600548

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    The ability to produce and distinguish microparticles containing >1100 spectral codes via the ratiometric incorporation of lanthanide nanophosphors is demonstrated. It is shown that 98% of these microparticles, which are termed MRBLEs (microspheres with ratiometric barcode lanthanide encoding), can be assigned to a code with >99.99% confidence, representing the largest purely spectral code set produced to date.

  4. Electrically Tunable Scattering from Devitrite–Liquid Crystal Hybrid Devices

    Haider Butt, Ali K. Yetisen, Ammar A. Khan, Kevin M. Knowles, Malik M. Qasim, Seok Hyun Yun and Timothy D. Wilkinson

    Version of Record online: 18 OCT 2016 | DOI: 10.1002/adom.201600414

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    The optical characteristics of devitrite and liquid crystal are integrated to fabricate an electrically variable optical diffuser. The magnitude and the transmission scattering angle of the device are tuned by changing the voltage between graphene and indium tin oxide electrodes to achieve optical diffusion up to ±60°.

  5. A Complete Quantitative Analysis of Spatio-Temporal Dynamics of Excitons in Functional Organic Light-Emitting Diodes

    Amrita Dey, Akshay Rao and Dinesh Kabra

    Version of Record online: 14 OCT 2016 | DOI: 10.1002/adom.201600678

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    The spatio-temporal dynamics of excitons in functional polymer light-emitting diodes reveal that singlet–triplet annihilation (STA) is significantly higher than the often invoked singlet–polaron annihilation (SPA). STA holds back the efficiencies of PLEDs and further realization of organic injection lasers. Additional singlets are found in F8BT that are related to thermally activated delayed fluorescence (TADF), as triplet–triplet annihilation (TTA) alone cannot account for the observed high external quantum efficiencies.