Advanced Functional Materials

Cover image for Vol. 22 Issue 17

September 11, 2012

Volume 22, Issue 17

Pages 3529–3744

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Nanotechnology Meets Plant Sciences: Gold Functionalized Mesoporous Silica Nanoparticle Mediated Protein and DNA Codelivery to Plant Cells Via the Biolistic Method (Adv. Funct. Mater. 17/2012) (page 3529)

      Susana Martin-Ortigosa, Justin S. Valenstein, Victor S.-Y. Lin, Brian G. Trewyn and Kan Wang

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290102

      Thumbnail image of graphical abstract

      The cell wall of plant cells is a physical barrier for nanoparticle uptake that limits nanotechnology development in plant sciences. On page 3576, Brian G. Trewyn, Kan Wang, and co-workers report using gold-plated mesoporous silica nanoparticles, which have increased performance as projectiles through the biolistic method, to co-deliver proteins and plasmid DNA into walled plant cells.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Nanowalls: Lateral Buckling of High Aspect Ratio Janus Nanowalls (Adv. Funct. Mater. 17/2012) (page 3530)

      Hyunsik Yoon, Abhijit Ghosh, Jung Yeon Han, Seung Hyun Sung, Won Bo Lee and Kookheon Char

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290103

      Thumbnail image of graphical abstract

      On page 3723, Won Bo Lee, Kookheon Char, and co-workers report the fabrication of Janus nanowalls and the phenomenon of lateral buckling in the walls. To realize Janus nanowalls, metal films are deposited on one side of the polymeric nanowalls. During the metal deposition, the nanowalls themselves buckle laterally because of the compressive residual stress in the metal films and geometric constraints.

  3. Back Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Lithium Ion Batteries: Graphene Oxide Gel-Derived, Free-Standing, Hierarchically Porous Carbon for High-Capacity and High-Rate Rechargeable Li-O2 Batteries (Adv. Funct. Mater. 17/2012) (page 3745)

      Zhong-Li Wang, Dan Xu, Ji-Jing Xu, Lei-Lei Zhang and Xin-Bo Zhang

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290104

      Thumbnail image of graphical abstract

      On page 3699 Xin-Bo Zhang and co-workers report the synthesis of free-standing hierarchically porous carbon (FHPC) derived from a graphene oxide gel in nickel foam by a facile in situ sol-gel method. As a cathode for Li-O2 batteries, the FHPC electrode exhibits a large capacity and high rate capability. This study opens up a promising strategy for the development of high-efficient oxygen electrodes for Li-O2 batteries.

  4. Masthead

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Masthead: (Adv. Funct. Mater. 17/2012)

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290105

  5. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Contents: (Adv. Funct. Mater. 17/2012) (pages 3531–3538)

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290100

  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Near-Infrared Fluorescent Silica/Porphyrin Hybrid Nanorings for In Vivo Cancer Imaging (pages 3539–3546)

      Koichiro Hayashi, Michihiro Nakamura, Hirokazu Miki, Shuji Ozaki, Masahiro Abe, Toshio Matsumoto and Kazunori Ishimura

      Article first published online: 10 MAY 2012 | DOI: 10.1002/adfm.201200219

      Thumbnail image of graphical abstract

      Near-infrared fluorescent silica/porphyrin hybrid nanorings (HNRs) are synthesized using a one-pot sol-gel reaction with a porphyrin-binding silica precursor. They are functionalized with amino groups and are easily modified with polyethylene glycol (PEG). The PEGylated HNRs (PEG-HNRs) accumulate in tumors through multiple factors such as their size, uncharged surface, unique shape, and long circulation time in blood, resulting in the acquisition of clear images of tumor.

    2. Novel Signal-Amplifying Fluorescent Nanofibers for Naked-Eye-Based Ultrasensitive Detection of Buried Explosives and Explosive Vapors (pages 3547–3555)

      Ying Wang, Anthony La, Yu Ding, Yixin Liu and Yu Lei

      Article first published online: 11 MAY 2012 | DOI: 10.1002/adfm.201200047

      Thumbnail image of graphical abstract

      Novel electrospun fluorescent nanofibers are developed for the detection of part per trillion to part per billion level nitro explosive vapors and buried explosives using the naked eyes with UV excitation. The outstanding sensing performance can be attributed to the proposed “sandwich-like” conformation between pyrene and phenyl pendants of polystyrene, which may allow efficient long-range energy migration similar to a molecular wire thus achieving amplified fluorescence quenching.

    3. White Electrofluorescence Switching from Electrochemically Convertible Yellow Fluorescent Dyad (pages 3556–3561)

      Seogjae Seo, Yuna Kim, Qing Zhou, Gilles Clavier, Pierre Audebert and Eunkyoung Kim

      Article first published online: 11 MAY 2012 | DOI: 10.1002/adfm.201102153

      Thumbnail image of graphical abstract

      Multi-color fluorescence switching is achieved by blending a naphthalimide to the electrofluorochromic layer, to show white–blue–dark state of fluorescence. The reversible electrochemistry of the tetrazine and naphthalimide is accompanied by the fluorescence change in an electrochemical cell. The emission color can be tuned by quenching emission at selected wavelengths, reversibly, under low working potentials.

    4. Assembly of Layered Rare-Earth Hydroxide Nanosheets and SiO2 Nanoparticles to Fabricate Multifunctional Transparent Films Capable of Combinatorial Color Generation (pages 3562–3569)

      Byung-Il Lee, Eun-su Lee and Song-Ho Byeon

      Article first published online: 9 MAY 2012 | DOI: 10.1002/adfm.201200295

      Thumbnail image of graphical abstract

      Antireflection and antifogging properties are integrated into transparent luminescent films by the layer-by-layer assembly of Eu3+, Tb3+, Dy3+ doped-hydroxocation nanosheets and negatively charged SiO2 nanoparticles. Resulting multifunctional films exhibit efficient red, green, and blue emissions with controllable intensity. Multiple overlap of individual films generates combinatorial color and bright white-light under 254 nm UV irradiation.

    5. Three Dimensional PtRh Alloy Porous Nanostructures: Tuning the Atomic Composition and Controlling the Morphology for the Application of Direct Methanol Fuel Cells (pages 3570–3575)

      Yuan Zhang, Metini Janyasupab, Chen-Wei Liu, Xinxin Li, Jiaqiang Xu and Chung-Chiun Liu

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200678

      Thumbnail image of graphical abstract

      PtRh alloy 3D nanostructures are synthesized by controlling aggregation of nanoparticles in oleylamine. The 3D alloy catalyst, composed of interconnected metallic particles, provides a large surface area and effective transport of reactive species. The properly prepared 3D porous nanostructures exhibit high electrochemical activity and good durability toward the methanol oxidation.

    6. Gold Functionalized Mesoporous Silica Nanoparticle Mediated Protein and DNA Codelivery to Plant Cells Via the Biolistic Method (pages 3576–3582)

      Susana Martin-Ortigosa, Justin S. Valenstein, Victor S.-Y. Lin, Brian G. Trewyn and Kan Wang

      Article first published online: 24 MAY 2012 | DOI: 10.1002/adfm.201200359

      Thumbnail image of graphical abstract

      Gold functionalized mesoporous silica nanoparticles are loaded with fluorescent proteins (eGFP) and coated with plasmid DNA expressing the red fluorescent protein mCherry. These nanoparticles are introduced to living plant cells using the biolistic method. This methodology delivers both protein and plasmid DNA, resulting in plant cells that exhibit both fluorescences.

    7. Hydrogen Selective NH2-MIL-53(Al) MOF Membranes with High Permeability (pages 3583–3590)

      Feng Zhang, Xiaoqin Zou, Xue Gao, Songjie Fan, Fuxing Sun, Hao Ren and Guangshan Zhu

      Article first published online: 11 MAY 2012 | DOI: 10.1002/adfm.201200084

      Thumbnail image of graphical abstract

      Continuous NH2-MIL-53(Al) metal-organic framework (MOF) membranes are prepared successfully on macroporous glass frit discs assisted with colloidal seeds to be evaluated for hydrogen gas separation. As-prepared membrane is studied by single and binary gas permeation of H2, CH4, N2 and CO2 at different temperatures. The supported NH2-MIL-53(Al) membranes exhibit high permeance and high selectivity, which result in a very high separation power. The robust membranes with high performance are expected in potential applications for hydrogen recycling.

    8. Low-Field Magnetoresistance in La0.67Sr0.33MnO3:ZnO Composite Film (pages 3591–3595)

      Margo Staruch, Haiyong Gao, Pu-Xian Gao and Menka Jain

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200489

      Thumbnail image of graphical abstract

      A La0.67Sr0.33MnO3:ZnO composite film is fabricated by spin-depositing a La0.67Sr0.33MnO3 phase in between ZnO nanorods hydrothermally grown on a (0001)-Al2O3 substrate. This unique nanocomposite fabrication method results in an enhanced low-field magnetoresistance effect that is believed to be due to spin polarized tunneling through modified La0.67Sr0.33MnO3 grain boundaries in the composite film.

    9. Preparation of Highly Ordered Nitrogen-Containing Mesoporous Carbon from a Gelatin Biomolecule and its Excellent Sensing of Acetic Acid (pages 3596–3604)

      Gurudas P. Mane, Siddulu N. Talapaneni, Chokkalingam Anand, Shaji Varghese, Hideo Iwai, Qingmin Ji, Katsuhiko Ariga, Toshiyuki Mori and Ajayan Vinu

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200207

      Thumbnail image of graphical abstract

      Highly basic and well-ordered nitrogen-doped mesoporous carbon with tunable pore diameters is prepared and its sensing capability for acidic molecules is demonstrated. It is found that the prepared material is highly basic and stable and shows excellent selectivity for sensing acetic acid.

  7. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Biomimetics: Controlling the Synaptic Plasticity of a Cu2S Gap-Type Atomic Switch (Adv. Funct. Mater. 17/2012) (page 3605)

      Alpana Nayak, Takeo Ohno, Tohru Tsuruoka, Kazuya Terabe, Tsuyoshi Hasegawa, James K. Gimzewski and Masakazu Aono

      Article first published online: 3 SEP 2012 | DOI: 10.1002/adfm.201290101

      Thumbnail image of graphical abstract

      Representing a synapse, which is the basic unit of neural communication in the human brain, by a single device is a challenging task. On page 3606, Alpana Nayak and co-workers represent a synapse by a single solid-state electrochemical nanodevice called a Cu2S gap-type atomic switch. The switch exhibits the sensory, short- and long-term memories and shows the potential for perceiving two important environmental factors, namely air and temperature.

  8. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    8. Frontispiece
    9. Full Papers
    1. Controlling the Synaptic Plasticity of a Cu2S Gap-Type Atomic Switch (pages 3606–3613)

      Alpana Nayak, Takeo Ohno, Tohru Tsuruoka, Kazuya Terabe, Tsuyoshi Hasegawa, James K. Gimzewski and Masakazu Aono

      Article first published online: 25 MAY 2012 | DOI: 10.1002/adfm.201200640

      Thumbnail image of graphical abstract

      Features of human memory are mimicked by a Cu2S gap-type atomic switch, which behaves as a biological synapse element under voltage pulse stimulation. The fact that it responds to the presence of air and the change of temperature distinguish it as an advanced synthetic synapse with the potential to perceive environment, similar to the human brain.

    2. Synthesis and Fabrication of Multifunctional Nanocomposites: Stable Dispersions of Nanoparticles Tethered with Short, Dense and Polydisperse Polymer Brushes in Poly(methyl methacrylate) (pages 3614–3624)

      Minhao Wong, Johannes Guenther, Luyi Sun, Janet Blümel, Riichi Nishimura and Hung-Jue Sue

      Article first published online: 23 MAY 2012 | DOI: 10.1002/adfm.201200083

      Thumbnail image of graphical abstract

      Nanoparticles tethered with short, dense and polydisperse polymer brushes exhibit excellent compatibility and stability in a poly(methyl methacrylate) matrix, despite the large mismatch in molecular weights of matrix polymer and grafted polymer. Polymer brushes are prepared through free radical polymerization, which is generally applicable to a wide range of nanoparticle-nanocomposite combinations. The tunability of multifunctional properties of these hybrid materials is reported.

    3. Nanopatterning of Anionic Nanoparticles based on Magnetic Prussian-Blue Analogues (pages 3625–3633)

      Eugenio Coronado, Alicia Forment-Aliaga, Elena Pinilla-Cienfuegos, Sergio Tatay, Laure Catala and José A. Plaza

      Article first published online: 23 MAY 2012 | DOI: 10.1002/adfm.201200067

      Thumbnail image of graphical abstract

      Local oxidation nanolithography combined with self-assembled monolayers result in an efficient method for the precise organization of different diameter anionic Prussian-blue analogue nanoparticles (NPs) on silicon surfaces. The electrostatic forces, which fix the NPs on the oxide patterns, guarantee their electronic decoupling from the surface and ensure the prevalence of their interesting physical properties.

    4. Efficient Synthesis of Heteroatom (N or S)-Doped Graphene Based on Ultrathin Graphene Oxide-Porous Silica Sheets for Oxygen Reduction Reactions (pages 3634–3640)

      Shubin Yang, Linjie Zhi, Kun Tang, Xinliang Feng, Joachim Maier and Klaus Müllen

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200186

      Thumbnail image of graphical abstract

      Heteroatom (N or S)-doped graphenes are synthesized via thermal reaction between graphene oxide and guest gases (NH3 or H2S) on ultrathin graphene oxide-porous silica sheets at high temperatures. It is found that both N and S-doping can occur to form the different binding configurations in the graphene and both N and S-doped graphene sheets exhibit excellent electrocatalytic properties for oxygen reduction reaction.

    5. Chemical and Topographical Effects on Cell Differentiation and Matrix Elasticity in a Corneal Stromal Layer Model (pages 3641–3649)

      Samantha L. Wilson, Ian Wimpenny, Mark Ahearne, Saaeha Rauz, Alicia J. El Haj and Ying Yang

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200655

      Thumbnail image of graphical abstract

      A novel engineering strategy is devised to create a nanofiber-hydrogel composite scaffold, which displays the characteristic morphological cues of native corneal tissue. Investigation of cell response to nanofibrous topographical cues, combined with media supplementation, highlighted that orthogonal arrangement of adult human derived corneal stromal (AHDCS) cells in 3D constructs with the presence of insulin and ascobate promotes keratogenesis, which could be a new strategy for generation of complex corneal tissue.

    6. Nickel Silicide Nanowire Arrays for Anti-Reflective Electrodes in Photovoltaics (pages 3650–3657)

      Neil P. Dasgupta, Shicheng Xu, Hee Joon Jung, Andrei Iancu, Rainer Fasching, Robert Sinclair and Fritz B. Prinz

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200398

      Thumbnail image of graphical abstract

      Single-crystalline, metallic NixSi nanowire arrays are grown on flexible metal foil substrates, without the need for lithography, etching, or catalysts. The optical properties of these NW arrays demonstrate broadband suppression of reflection due to light scattering, and high electrical conductivity (10−4 Ω-cm), suggesting their use as an efficient and low-cost back electrode material for photovoltaics.

    7. Reversible Lithium Storage with High Mobility at Structural Defects in Amorphous Molybdenum Dioxide Electrode (pages 3658–3664)

      Jun H. Ku, Ji Heon Ryu, Sun Ha Kim, Oc Hee Han and Seung M. Oh

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201102669

      Thumbnail image of graphical abstract

      An amorphous MoO2 (a-Mo2)electrode exhibits an unexpectedly high Li+ storage capacity (up to 810 mA h g−1), which is larger by a factor of four than that of its crystalline counterpart. Li+ ions are hosted by the structural defects in a-MoO2 and opened vacancies and void spaces give a much faster charge/discharge rate as compared with the crystalline counterpart.

    8. A New View of Microcrystalline Silicon: The Role of Plasma Processing in Achieving a Dense and Stable Absorber Material for Photovoltaic Applications (pages 3665–3671)

      Grégory Bugnon, Gaetano Parascandolo, Thomas Söderström, Peter Cuony, Matthieu Despeisse, Simon Hänni, Jakub Holovský, Fanny Meillaud and Christophe Ballif

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200299

      Thumbnail image of graphical abstract

      The growth of intrinsic microcrystalline silicon material at high deposition rates is studied for photovoltaic applications. The contribution of two distinct material phases on solar cell performance on textured substrates is shown. The porosity of the material is demonstrated through damp-heat experiments. Based on the developments, a single junction p-i-n microcrystalline record solar cell is presented.

    9. Model Organic Surfaces to Probe Marine Bacterial Adhesion Kinetics by Surface Plasmon Resonance (pages 3672–3681)

      Alice Pranzetti, Stéphanie Salaün, Sophie Mieszkin, Maureen E. Callow, James A. Callow, Jon A. Preece and Paula M. Mendes

      Article first published online: 21 MAY 2012 | DOI: 10.1002/adfm.201103067

      Thumbnail image of graphical abstract

      Surface plasmon resonance (SPR) spectroscopy, in combination with self-assembled monolayers (SAMs) that have different backbone structures and/or functional groups, is used for the first time to study the initial stages of bacterial adhesion to surfaces. The role of extracellular polymeric substances (EPS) in bacterial adhesion is also investigated. SPR spectroscopy is revealed as a powerful and unique way to probe bacterial adhesion in real time.

    10. Microwave-Assisted Surface Synthesis of a Boron–Carbon–Nitrogen Foam and its Desorption Enthalpy (pages 3682–3690)

      Rajib Paul, Andrey A. Voevodin, Dimitry Zemlyanov, Ajit K. Roy and Timothy S. Fisher

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200325

      Thumbnail image of graphical abstract

      Carbon foams provide the combined advantages of large surface area and high thermal conductivity, which are critical for thermal energy storage, but they have low adsorption enthalpy for lightweight hydrocarbons. Microwave heating-assisted chemical treatment converts carbon foam to B–C–N foam. An enhanced adsorption enthalpy for B–C–N foams can enhance adsorption processes for thermal storage and utilization.

    11. Nitroxide Radicals@US-Tubes: New Spin Labels for Biomedical Applications (pages 3691–3698)

      Eladio J. Rivera, Richa Sethi, Feifei Qu, Ramkumar Krishnamurthy, Raja Muthupillai, Michael Alford, Michael A. Swanson, Sandra S. Eaton, Gareth R. Eaton and Lon J. Wilson

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201102826

      Thumbnail image of graphical abstract

      Nitroxide radicals within ultrashort single-walled carbon nanotubes (US-tubes) are a promising new technology for magnetic resonance imaging (MRI) and electron paramagnetic resonance imaging (EPRI) biomedical applications. These materials display characteristic electron paramagnetic resonance (EPR) signals due to the incorporation of immobilized nitroxide spin probes in the US-tubes and short proton relaxation times for MRI.

    12. Graphene Oxide Gel-Derived, Free-Standing, Hierarchically Porous Carbon for High-Capacity and High-Rate Rechargeable Li-O2 Batteries (pages 3699–3705)

      Zhong-Li Wang, Dan Xu, Ji-Jing Xu, Lei-Lei Zhang and Xin-Bo Zhang

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200403

      Thumbnail image of graphical abstract

      Graphene oxide gel-derived, free-standing, hierarchically porous carbon in nickel foam without any additional binder is synthesized successfully by an in situ sol-gel method. As the cathode of Li-O2 batteries, the as-synthesized electrodes have excellent performance with a high capacity and a high rate capability.

    13. Magnetic Anisotropy of Cr7Ni Spin Clusters on Surfaces (pages 3706–3713)

      Valdis Corradini, Alberto Ghirri, Elena Garlatti, Roberto Biagi, Valentina De Renzi, Umberto del Pennino, Valerio Bellini, Stefano Carretta, Paolo Santini, Grigore Timco, Richard E. P. Winpenny and Marco Affronte

      Article first published online: 21 MAY 2012 | DOI: 10.1002/adfm.201200478

      Thumbnail image of graphical abstract

      The experimental and theoretical determination of magnetic anisotropy in molecular spin clusters is addressed. The method used provides hints for the interpretation of X-ray magnetic dichroism (XMCD) spectra and the results are evidence for the interplay between the single ion magnetic anisotropy and that of the whole molecule.

    14. Inorganic Solids of CdSe Nanocrystals Exhibiting High Emission Quantum Yield (pages 3714–3722)

      Elena Khon, Scott Lambright, Dmitry Khon, Bryan Smith, Timothy O'Connor, Pavel Moroz, Martene Imboden, Geoffrey Diederich, Cesar Perez-Bolivar, Pavel Anzenbacher and Mikhail Zamkov

      Article first published online: 11 MAY 2012 | DOI: 10.1002/adfm.201200939

      Thumbnail image of graphical abstract

      The emission quantum yield of CdSe nanocrystals embedded into a matrix of CdS semiconductor is tunable via interparticle distance. The transmission electron microscopy images show the cross section of a film along with nanoparticle precursors used for its assembly.

    15. Lateral Buckling of High Aspect Ratio Janus Nanowalls (pages 3723–3728)

      Hyunsik Yoon, Abhijit Ghosh, Jung Yeon Han, Seung Hyun Sung, Won Bo Lee and Kookheon Char

      Article first published online: 18 MAY 2012 | DOI: 10.1002/adfm.201200749

      Thumbnail image of graphical abstract

      The fabrication of a novel structure – Janus nanowalls – and the phenomenon of lateral buckling within the wall are demonstrated. Metal films are deposited on one side of the polymeric nanowalls. During the metal deposition, the nanowalls themselves buckle laterally; this buckling is induced by the compressive residual stress in the metal film and geometric confining constraints.

    16. Casimir Force Contrast Between Amorphous and Crystalline Phases of AIST (pages 3729–3736)

      Gauthier Torricelli, Peter J. van Zwol, Olex Shpak, George Palasantzas, Vitaly B. Svetovoy, Chris Binns, Bart J. Kooi, Peter Jost and Matthias Wuttig

      Article first published online: 23 MAY 2012 | DOI: 10.1002/adfm.201200641

      Thumbnail image of graphical abstract

      The Casimir force is measured to be higher for crystalline than for amorphous phase change materials. The contribution of free electrons (Drude term) and the change of bonding to the Casimir force contrast are determined. This finding suggests potential pathways to optimize the Casimir force contrast for applications.

    17. Adjustable Hyperthermia Response of Self-Assembled Ferromagnetic Fe-MgO Core–Shell Nanoparticles by Tuning Dipole–Dipole Interactions (pages 3737–3744)

      Carlos Martinez-Boubeta, Konstantinos Simeonidis, David Serantes, Iván Conde-Leborán, Ioannis Kazakis, George Stefanou, Luis Peña, Regina Galceran, Lluis Balcells, Claude Monty, Daniel Baldomir, Manassis Mitrakas and Makis Angelakeris

      Article first published online: 11 MAY 2012 | DOI: 10.1002/adfm.201200307

      Thumbnail image of graphical abstract

      The correlations arising from dipole–dipole interactions and their influence on the hyperthermia efficacy are studied both theoretically and experimentally and found to be in quantitative agreement. The calculation represents an analytical model of hyperthermia in magnetic interacting particle systems to explain in a simple way the ubiquitous behavior observed in this class of materials.

SEARCH

SEARCH BY CITATION