Advanced Materials

Cover image for Vol. 22 Issue 18

May 11, 2010

Volume 22, Issue 18

Pages 1987–2091

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. Stretchable Batteries: Arrays of Ultracompliant Electrochemical Dry Gel Cells for Stretchable Electronics (Adv. Mater. 18/2010)

      Martin Kaltenbrunner, Gerald Kettlgruber, Christian Siket, Reinhard Schwödiauer and Siegfried Bauer

      Article first published online: 3 MAY 2010 | DOI: 10.1002/adma.201090061

      Thumbnail image of graphical abstract

      The front cover illustrates an ultracompliant battery for powering stretchable electronic items useful in wearable and comfortable electronic items integrated into clothing or implants. The battery combines acrylic elastomers with functional gel electrodes and withstands stretch ratios up to 100%. Shown is a series connection of two batteries, sufficient for driving a green light-emitting diode. More details can be found in the article by Siegfried Bauer and co-workers on p. 2065. Image design by Georg Wiesner.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. Nanoporous Metal Membranes: Nanoporous Metal Membranes with Bicontinuous Morphology from Recyclable Block-Copolymer Templates (Adv. Mater. 18/2010)

      Yong Wang, Changcheng He, Weihong Xing, Fengbin Li, Ling Tong, Zhiquan Chen, Xingzhi Liao and Martin Steinhart

      Article first published online: 3 MAY 2010 | DOI: 10.1002/adma.201090062

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      Nondestructive preparation of bicontinuous nanoporous metal membranes by replication of bicontinuous nanoporous polymeric membranes consisting of a recoverable asymmetric block copolymers (BCPs) is reported by Yong Wang, Martin Steinhart, and co-workers on p. 2068. The BCP membranes are generated by swelling the minority domains of the BCP with selective solvents accompanied by reconstruction of the glassy matrix formed by the majority component.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. Contents: (Adv. Mater. 18/2010) (pages 1987–1992)

      Article first published online: 3 MAY 2010 | DOI: 10.1002/adma.201090063

  4. Review

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. Chemical Vapor Deposition of Conformal, Functional, and Responsive Polymer Films (pages 1993–2027)

      Mahriah E. Alf, Ayse Asatekin, Miles C. Barr, Salmaan H. Baxamusa, Hitesh Chelawat, Gozde Ozaydin-Ince, Christy D. Petruczok, Ramaswamy Sreenivasan, Wyatt E. Tenhaeff, Nathan J. Trujillo, Sreeram Vaddiraju, Jingjing Xu and Karen K. Gleason

      Article first published online: 4 DEC 2009 | DOI: 10.1002/adma.200902765

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      Chemical vapor deposition (CVD) polymerization bridges all-dry microfabrication technology with the chemistry of functional and responsive organic materials. In a single step, vapor-phase monomers can be transformed through selective reaction for surface modification of micro- and nanostructured surfaces. Shown is conformal CVD polymer deposition, ∼350 nm thick, on trenches 7 μm deep and 2 μm wide etched on silicon.

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. Highly Ordered Nanoporous Alumina on Conducting Substrates with Adhesion Enhanced by Surface Modification: Universal Templates for Ultrahigh-Density Arrays of Nanorods (pages 2028–2032)

      Jinseok Byun, Jeong In Lee, Seungchul Kwon, Gumhye Jeon and Jin Kon Kim

      Article first published online: 9 FEB 2010 | DOI: 10.1002/adma.200903763

      Thumbnail image of graphical abstract

      A highly ordered nanoporous anodized aluminum oxide template with excellent adhesion is fabricated on various conducting substrates by surface modification of the substrates. This template can be universally utilized to fabricate laterally long-range-ordered and hexagonally packed arrays of freestanding and vertically aligned metal, semiconductor, and conducting polymer nanorods on various substrates, including flexible substrates (see image).

    2. Multilevel Atomic-Scale Transistors Based on Metallic Quantum Point Contacts (pages 2033–2036)

      Fangqing Xie, Robert Maul, Christian Obermair, Wolfgang Wenzel, Gerd Schön and Thomas Schimmel

      Article first published online: 1 FEB 2010 | DOI: 10.1002/adma.200902953

      Thumbnail image of graphical abstract

      Multilevel logic and storage devices on the atomic scale are of great interest as they allow more efficient data storage and processing with a smaller number of logical gates. Here we demonstrate a multilevel atomic quantum transistor, allowing for the gate-controlled switching between different quantized conducting states providing a basis for the future development of novel ultra-small quantum- electronic devices.

    3. Oxidized Gold Thin Films: An Effective Material for High-Performance Flexible Organic Optoelectronics (pages 2037–2040)

      Michael G. Helander, Zhi-Bin Wang, Mark T. Greiner, Zhi-Wei Liu, Jacky Qiu and Zheng-Hong Lu

      Article first published online: 21 DEC 2009 | DOI: 10.1002/adma.200903248

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      Oxidized Au thin film is shown to function as a direct drop-in replacement for the de facto standard indium tin oxide anode in high-performance flexible organic light-emitting diodes fabricated on plastic substrates (see image). The thin films offer a new materials-technology platform for enabling the roll-to-roll processing of next-generation flexible organic optoelectronics for applications such as solid-state lighting.

    4. Microcrimped Collagen Fiber-Elastin Composites (pages 2041–2044)

      Jeffrey M. Caves, Vivek A. Kumar, Wenjun Xu, Nisarga Naik, Mark G. Allen and Elliot L. Chaikof

      Article first published online: 24 FEB 2010 | DOI: 10.1002/adma.200903612

      Thumbnail image of graphical abstract

      A flexible membrane templating technique (a) is developed for the fabrication of microcrimped collagen microfibers (b) that are embedded in an elastin-like protein matrix to generate hierarchical, biologically inspired fiber-reinforced composites (c). The microcrimped structure is stable under cyclic loading and the mechanical response of the engineered collagen-elastin composite mimics that of native tissue.

    5. Ambipolar Memory Devices Based on Reduced Graphene Oxide and Nanoparticles (pages 2045–2049)

      Sung Myung, Jaesung Park, Hyungwoo Lee, Kwang S. Kim and Seunghun Hong

      Article first published online: 26 FEB 2010 | DOI: 10.1002/adma.200903267

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      A directed-assembly method on the basis of graphene oxide (GO) pieces is developed, which allowed us to mass-produce a uniform array of graphene-based ambipolar memory devices using only conventional microfabrication facilities. Significantly, we successfully demonstrated that this device can be operated as both conventional conductivity-switching memory and new type-switching memory by adjusting the charge density on the nanoparticles.

    6. Structural Characterization of Multi-Quantum Wells in Electroabsorption-Modulated Lasers by using Synchrotron Radiation Micrometer-Beams (pages 2050–2054)

      Lorenzo Mino, Diego Gianolio, Giovanni Agostini, Andrea Piovano, Marco Truccato, Angelo Agostino, Stefano Cagliero, Gema Martinez-Criado, Simone Codato and Carlo Lamberti

      Article first published online: 22 FEB 2010 | DOI: 10.1002/adma.200903407

      Thumbnail image of graphical abstract

      Advanced optoelectronic devices require monolithic integration of different functions at chip level. This is the case of multi-quantum well (MQW) electro absorption modulated lasers (EMLs) realized by using the selective area growth (SAG) technique, and which can be employed in long-distance, high-frequency optical fiber communication applications. We demonstrate that a micrometer-resolved X-ray beam available at third-generation synchrotron radiation sources allows direct measurement of determinant structural parameters of MQW EML structures.

    7. B4C-Nanowires/Carbon-Microfiber Hybrid Structures and Composites from Cotton T-shirts (pages 2055–2059)

      Xinyong Tao, Lixin Dong, Xinnan Wang, Wenkui Zhang, Bradley J. Nelson and Xiaodong Li

      Article first published online: 8 MAR 2010 | DOI: 10.1002/adma.200903071

      Thumbnail image of graphical abstract

      B4C-nanowire/carbon-microfiber hybrid structures are synthesized using cotton T-shirts as both the template and carbon source. The B4C nanowires exhibit a high elastic modulus of 428.1 ± 9.3 GPa and elastic recovery after multiple high-strain bending cycles without brittle failure or obvious residual deformation for the strain up to 45%. The hybrid structures can block 99.8% UV irradiation and achieve a superior reinforcing effect in epoxy composites.

    8. Peptide/Graphene Hybrid Assembly into Core/Shell Nanowires (pages 2060–2064)

      Tae Hee Han, Won Jun Lee, Duck Hyun Lee, Ji Eun Kim, Eun-Young Choi and Sang Ouk Kim

      Article first published online: 29 MAR 2010 | DOI: 10.1002/adma.200903221

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      Hybrid assembly of peptides and graphene into core/shell nanowires is presented here. Electroconductive nanowires comprised of multilayered graphene shells wrapped around peptide nanowire cores were readily assembled upon diluting peptide solution into an aqueous reduced graphene dispersion. Calcination of peptide cores generated a hollow graphene-shell network with large surface area and high thermal/chemical stability.

    9. Arrays of Ultracompliant Electrochemical Dry Gel Cells for Stretchable Electronics (pages 2065–2067)

      Martin Kaltenbrunner, Gerald Kettlgruber, Christian Siket, Reinhard Schwödiauer and Siegfried Bauer

      Article first published online: 30 MAR 2010 | DOI: 10.1002/adma.200904068

      Thumbnail image of graphical abstract

      Ultracompliant electrochemical dry cells are connected in series powering an embedded light emitting diode in different states of mechanical stretch.

    10. Nanoporous Metal Membranes with Bicontinuous Morphology from Recyclable Block-Copolymer Templates (pages 2068–2072)

      Yong Wang, Changcheng He, Weihong Xing, Fengbin Li, Ling Tong, Zhiquan Chen, Xingzhi Liao and Martin Steinhart

      Article first published online: 26 APR 2010 | DOI: 10.1002/adma.200903655

      Thumbnail image of graphical abstract

      Nondestructive preparation of bicontinuous nanoporous metal membranes by replication of bicontinuous nanoporous polymeric membranes consisting of recoverable asymmetric block copolymers (BCPs) is reported. The BCP membranes are generated by swelling the minority domains of the BCP with selective solvents accompanied by reconstruction of the glassy matrix formed by the majority component (see figure).

    11. Poly(9,9-dioctylfluorene)-Based Conjugated Polyelectrolyte: Extended π-Electron Conjugation Induced by Complexation with a Surfactant Zwitterion (pages 2073–2077)

      Giuseppina Pace, Guoli Tu, Emiliano Fratini, Sylvain Massip, Wilhelm T. S. Huck, Piero Baglioni and Richard H. Friend

      Article first published online: 19 APR 2010 | DOI: 10.1002/adma.200903633

      Thumbnail image of graphical abstract

      We report on a conjugated polyelectrolyte (CPE) based on fluorene repeat units, which forms a supramolecular complex with a zwitterion surfactant. The complex self-assembles into multilamellar structures on solid substrates. The luminescence efficiency, low in the uncomplexed polymer, is strongly increased after complexation. This originates from the phase segregation between the aromatic backbone and ionic sides, reducing conformational defects and ionic dipole-induced quenching.

    12. Chemosensors for Viruses Based on Artificial Immunoglobulin Copies (pages 2078–2081)

      Romana Schirhagl, Peter A. Lieberzeit and Franz L. Dickert

      Article first published online: 21 DEC 2009 | DOI: 10.1002/adma.200903517

      Thumbnail image of graphical abstract

      “Plastic replicas” of natural antibodies are accessible by molecular imprinting procedures. The first step involves the synthesis of molecularly imprinted polymer (MIP) particles templated with human immunoglobulin. They then can be utilized as templates for a stamp-based surface imprinting procedure that results in polymer surface structures exactly mimicking the initial globulin. Compared to their natural counterparts, these artificial antibodies show improved selectivity and sensitivity on quartz crystal microbalance sensors.

    13. Bio-Inspired Synthesis and Mechanical Properties of Calcite–Polymer Particle Composites (pages 2082–2086)

      Yi-Yeoun Kim, Luis Ribeiro, Fabien Maillot, Oliver Ward, Stephen J. Eichhorn and Fiona C. Meldrum

      Article first published online: 4 MAR 2010 | DOI: 10.1002/adma.200903743

      Thumbnail image of graphical abstract

      Calcite single crystals containing polystyrene particles are synthesized using a straightforward, one-pot method, through control of the particle surface structure and the crystallization conditions. Investigation of the mechanical behavior of these composite crystals using nanoindentation shows enhanced fracture toughness via a crack bridging mechanism.

    14. Efficient Blue-Light-Emitting Polymer Heterostructure Devices: The Fabrication of Multilayer Structures from Orthogonal Solvents (pages 2087–2091)

      Stefan Sax, Nicole Rugen-Penkalla, Alfred Neuhold, Sebastian Schuh, Egbert Zojer, Emil J. W. List and Klaus Müllen

      Article first published online: 8 MAR 2010 | DOI: 10.1002/adma.200903076

      Thumbnail image of graphical abstract

      An all-solution processed organic light-emitting diode with enhanced device efficiency based on an additional methanol-soluble polyfluorene layer (see figure) with nonionic ethylene glycol side chains is presented. Due to an asymmetric shift of the energy levels at the polymer/polymer interface, significant efficiency enhancements were obtained.

  6. Corrections

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Review
    6. Communications
    7. Corrections
    1. You have free access to this content
      Chemosensors for Viruses Based on Artificial Immunoglobulin Copies

      Romana Schirhagl, Peter A. Lieberzeit and Franz L. Dickert

      Article first published online: 3 MAY 2010 | DOI: 10.1002/adma.201090064

      This article corrects:

      Chemosensors for Viruses Based on Artificial Immunoglobulin Copies1

      Vol. 22, Issue 18, 2078–2081, Article first published online: 21 DEC 2009

    2. You have free access to this content
      Engineering a Material Surface for Drug Delivery and Imaging using Layer-by-Layer Assembly of Functionalized Nanoparticles

      Thomas Soike, Amanda K. Streff, Chenxia Guan, Ryan Ortega, Mohammed Tantawy, Christopher Pino and V. Prasad Shastri

      Article first published online: 3 MAY 2010 | DOI: 10.1002/adma.201090065

      This article corrects:

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