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Gutes A.,University of California at Berkeley | Carraro C.,Leibniz Institute for New Materials | Maboudian R.,Leibniz Institute for New Materials
Journal of the American Chemical Society | Year: 2010

(Figure Presented) A silver galvanic displacement process on commercial aluminum foil has been carried out to produce cost-effective SERS substrates. The process is based on an extremely simple redox process where aluminum is oxidized while silver ions are reduced, yielding a final silver dendritic structure that offers a large surface area-to-volume ratio. XPS measurements confirmed the metallic nature of the formed dendrites. SERS substrates were fabricated by spreading of the dendrites on double side Scotch tape attached to a paper slide. Three different thiols were incubated to achieve SAM formation on the Ag dendrites and measured by Raman spectroscopy. The obtained spectra presented well resolved bands and provided valuable information regarding the orientation of the thiols. The high Raman intensity also demonstrates the high enhancement capacities of the produced silver structures. The overall method is cost-effective and allows the use of silver dendrite paste for the mass production of SERS-active substrates, including on flexible substrates and/or via screen printing. © 2010 American Chemical Society. Source

Agency: Cordis | Branch: H2020 | Program: MSCA-RISE | Phase: MSCA-RISE-2014 | Award Amount: 639.00K | Year: 2015

CREATe-Net is composed of 3 academic institutions in Europe (Saarland Univ., DE; Technical Univ. of Catalonia, ES; and INM - Leibniz Institute for New Materials, DE), 3 non-academic institutions in Europe (AB Sandvik Coromant, SE; Steinbeis Research and Innovation Centers, DE; and Nanoforce Ltd., UK), as well as 6 academic partners outside Europe (CSIR - Council for Scientific and Industrial Research, ZA; Univ. Catlica de Uruguay, UY; Instituto de Investigaciones en Ciencia e Ingeniera de Materiales, AR; Univ. de Concepcin, CL; Univ. de Sao Paulo, BR; and Georgia Institute of Technology, US). The network will cooperate in the field of design, processing and characterization of novel composite materials for resource-efficient applications and environmentally friendly technologies, in particular energy storage, bearings, electrical contacts, and cutting tools. The purpose of the network is to combine different thematic expertises of the academic and industrial network members in the multidisciplinary field of materials science and engineering in order to design new composite materials with superior properties and performance. The expertise of the network includes: a) design by modelling at different scales (e. g. atomistic modelling, thermodynamic and kinetic modelling, finite element modelling); b) novel processing methods (e . g. atomic layer deposition, severe plastic deformation and rapid solidification); c) advanced characterization methods (e. g. serial sectioning and atom probe tomography, high resolution transmission electron microscopy); d) processing/characterization of carbon materials, metal and ceramic matrix composites as well as functionally graded materials; and e) performance testing for targeted applications (available through special designed testing facilities at the research centres and industrial partners). Two workshops and one final conference will contribute to the exchange of knowledge beside the exchange of researchers.

Beguin F.,Poznan University of Technology | Presser V.,Leibniz Institute for New Materials | Balducci A.,University of Munster | Frackowiak E.,Poznan University of Technology
Advanced Materials | Year: 2014

Electrical energy storage (EES) is one of the most critical areas of technological research around the world. Storing and efficiently using electricity generated by intermittent sources and the transition of our transportation fleet to electric drive depend fundamentally on the development of EES systems with high energy and power densities. Supercapacitors are promising devices for highly efficient energy storage and power management, yet they still suffer from moderate energy densities compared to batteries. To establish a detailed understanding of the science and technology of carbon/carbon supercapacitors, this review discusses the basic principles of the electrical double-layer (EDL), especially regarding the correlation between ion size/ion solvation and the pore size of porous carbon electrodes. We summarize the key aspects of various carbon materials synthesized for use in supercapacitors. With the objective of improving the energy density, the last two sections are dedicated to strategies to increase the capacitance by either introducing pseudocapacitive materials or by using novel electrolytes that allow to increasing the cell voltage. In particular, advances in ionic liquids, but also in the field of organic electrolytes, are discussed and electrode mass balancing is expanded because of its importance to create higher performance asymmetric electrochemical capacitors. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Weiss I.M.,Leibniz Institute for New Materials
ChemBioChem | Year: 2010

The aragonite-specific proteins, Pif97 and Pif80, provide new views on remote control of nacre formation. A chitinous membrane is pinned to matured nacre in certain spots until the onset of nucleation of the next layer. In this model, diffusible low-molecular-weight acidic proteins would fulfill an important role as Ca2+/H+ shuttles to avoid local acidification and balance mineralization gradients. (Figure Presented) © 2010 Wiley-VCH Verlag GmbH& Co. KGaA. Source

Agency: Cordis | Branch: H2020 | Program: RIA | Phase: SC5-12a-2014 | Award Amount: 4.00M | Year: 2014

INFINITY will develop an inorganic alternative to a scarce and high cost material, indium tin oxide (ITO), currently used as a Transparent Conductive Coating (TCC) for display electrodes on glass and plastic substrates. The novel conductive materials to be developed in this project will be based on low cost sol-gel chemistry using more widely available metallic elements and will leverage recent advances in nanostructured coatings. Novel printing procedures will also be developed to enable direct writing of multi and patterned nano-layers, removing the waste associated with etch patterning.

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