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Advanced Materials

Biosilica Electrically-Insulating Layers by Soft Lithography-Assisted Biomineralisation with Recombinant Silicatein

Authors

  • Alessandro Polini,

    1. at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy
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  • Stefano Pagliara,

    1. at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy
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  • Andrea Camposeo,

    1. at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy
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  • Adriana Biasco,

    1. at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy
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  • Heinz C. Schröder,

    1. at Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55099 Mainz, Germany
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  • Werner E. G. Müller,

    1. at Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55099 Mainz, Germany
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  • Dario Pisignano

    Corresponding author
    1. at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy
    2. Dipartimento di Ingegneria dell'Innovazione, Università del Salento, via, Arnesano, I-73100 Lecce, Italy
    • at National Nanotechnology Laboratory of Istituto Nanoscienze-CNR, Università del Salento, via Arnesano, I-73100 Lecce, Italy.
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Abstract

A microcontact printing-based approach for realizing biosilica microstructures is reported, as well as biomineralised films exploiting the enzymatic activity of immobilized recombinant silicatein, by simply varying the biomineralisation time in precursor solution. The electrically-insulating properties of biomineralised films are demonstrated, for potential device applications.

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