Advanced Materials

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Recently Published Articles

  1. Transport Properties of Hybrids with Ferromagnetic MnAs Nanoclusters and Their Potential for New Magnetoelectronic Devices

    Matthias T. Elm and Shinjiro Hara

    Article first published online: 30 OCT 2014 | DOI: 10.1002/adma.201403136

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    Granular hybrid structures with ferromagnetic MnAs nanoclusters offer a hugh potential for new magnetoelectronic or spintronic nanodevices. This review gives an overview of the different preparation methods for hybrid structures, their transport properties, and recent progresses in making use of randomly distributed as well as arranged nanoclusters for nanodevice applications.

  2. Single-Crystal C60 Needle/CuPc Nanoparticle Double Floating-Gate for Low-Voltage Organic Transistors Based Non-Volatile Memory Devices

    Hsuan-Chun Chang, Chien Lu, Cheng-Liang Liu and Wen-Chang Chen

    Article first published online: 30 OCT 2014 | DOI: 10.1002/adma.201403771

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    Low-voltage organic field-effect transistor memory devices exhibiting a wide memory window, low power consumption, acceptable retention, endurance properties, and tunable memory performance are fabricated. The performance is achieved by employing single-crystal C60 needles and copper phthalocyanine nanoparticles to produce an ambipolar (hole/electron) trapping effect in a double floating-gate architecture.

  3. Highly Skin-Conformal Microhairy Sensor for Pulse Signal Amplification

    Changhyun Pang, Ja Hoon Koo, Amanda Nguyen, Jeffrey M. Caves, Myung-Gil Kim, Alex Chortos, Kwanpyo Kim, Paul J. Wang, Jeffrey B.-H. Tok and Zhenan Bao

    Article first published online: 30 OCT 2014 | DOI: 10.1002/adma.201403807

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    A bioinspired microhairy sensor is developed to enable ultraconformability on nonflat surfaces and significant enhancement in the signal-to-noise ratio of the retrieved signals. The device shows ≈12 times increase in the signal-to-noise ratio in the generated capacitive signals, allowing that the ultraconformal microhair pressure sensors are capable of measuring weak pulsations of internal jugular venous pulses stemming from a human neck.

  4. Random-Cavity Lasing from Electrospun Polymer Fiber Networks

    Sarah Krämmer, Christoph Vannahme, Cameron L. C. Smith, Tobias Grossmann, Michael Jenne, Stefan Schierle, Lars Jørgensen, Ioannis S. Chronakis, Anders Kristensen and Heinz Kalt

    Article first published online: 30 OCT 2014 | DOI: 10.1002/adma.201402995

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    Lasing emission from random cavities formed in networks of electrospun Rhodamine-doped polymer fibers is presented. Spatially resolved spectroscopy and spectral analysis prove that the observed laser emission stems from individual ring resonators randomly distributed throughout the network. These electrospun fiber lasers represent a facile and straightforward configuration for developing novel photonic devices that may advantageously utilize the network morphology.

  5. Perovskite Thin Films via Atomic Layer Deposition

    Brandon R. Sutherland, Sjoerd Hoogland, Michael M. Adachi, Pongsakorn Kanjanaboos, Chris T. O. Wong, Jeffrey J. McDowell, Jixian Xu, Oleksandr Voznyy, Zhijun Ning, Arjan J. Houtepen and Edward H. Sargent

    Article first published online: 30 OCT 2014 | DOI: 10.1002/adma.201403965

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    A new method to deposit perovskite thin films which benefit from the thickness control and conformality of atomic layer deposition (ALD) is detailed. A seed layer of ALD PbS is place-exchanged with PbI2 and subsequently CH3NH3PbI3 perovskite. These films show promising optical properties, with gain coefficients of 3200 ± 830 cm−1.