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Recently Published Articles

  1. Domain Wall Architecture in Tetragonal Ferroelectric Thin Films

    Gabriele De Luca, Marta D. Rossell, Jakob Schaab, Nathalie Viart, Manfred Fiebig and Morgan Trassin

    Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605145

    Thumbnail image of graphical abstract

    Non-Ising-like 180° ferroelectric domain wall architecture and domain distribution in tetragonal PbZrxTi1−xO3 thin films are probed using a combination of optical second harmonic generation and scanning transmission electron microscopy. In the remnant state, a specific nonlinear optical signature of tilted 180° domain walls corresponding to a mixed Ising–Néel-type rotation of polarization across the wall is shown.

  2. Ultrafast Digital Printing toward 4D Shape Changing Materials

    Limei Huang, Ruiqi Jiang, Jingjun Wu, Jizhou Song, Hao Bai, Bogeng Li, Qian Zhao and Tao Xie

    Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605390

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    Ultrafast 4D printing (<30 s) of responsive polymers is reported. Visible light triggered polymerization of commercial monomers defines digitally stress distribution in a 2D polymer film. Releasing the stress after the printing converts the structure into 3D. An additional dimension can be incorporated by choosing the printing precursors. The process overcomes the speed limiting steps of typical 3D (4D) printing.

  3. Probing Bilayer Grain Boundaries in Large-Area Graphene with Tip-Enhanced Raman Spectroscopy

    Kyoung-Duck Park, Markus B. Raschke, Joanna M. Atkin, Young Hee Lee and Mun Seok Jeong

    Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201603601

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    The bilayer grain boundaries (GBs) in chemical-vapor-deposition-grown large-area graphene are identified using multispectral tip-enhanced Raman imaging with 18 nm spatial resolution. The misorientation angle of the bilayer GBs is determined from a quantitative analysis of the phonon-scattering properties associated with the modified electronic structure.

  4. Nonlinear Frameworks for Reversible and Pluripotent Wetting on Topographic Surfaces

    Junsoo Kim, Yifan Wang, Hyunchul Park, Min Cheol Park, Seung Eon Moon, Soon Man Hong, Chong Min Koo, Kahp-Yang Suh, Shu Yang and Hyesung Cho

    Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605078

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    Soft, ultrathin frameworks nonlinearly organized in tandem are presented to realize both reversible and pluripotent wetting on topographic surfaces. A design rule is introduced by establishing and proving the theoretical model upon hierarchical textures. Nonlinear frameworks can be conformally and reversibly wet upon complex topography in nature, thereby overcoming the wetting problems in previous conventional solid systems.

  5. Toward Arbitrary-Direction Energy Harvesting through Flexible Piezoelectric Nanogenerators Using Perovskite PbTiO3 Nanotube Arrays

    Young Bum Lee, Jin Kyu Han, Suttinart Noothongkaew, Seong Ku Kim, Wooseok Song, Sung Myung, Sun Sook Lee, Jongsun Lim, Sang Don Bu and Ki-Seok An

    Version of Record online: 7 DEC 2016 | DOI: 10.1002/adma.201604500

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    New fiber-type piezoelectric nanogenerator devices consisting of radially aligned perovskite PbTiO3 nanotubes are designed for energy harvesting from arbitrary mechanical motion. The free-standing fiber-type nanogenerators generate constant amount of electric power by bending or wind motion regardless of direction, thus, extending the possibility of their practical applications.

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