Optical properties of in-vitro biomineralised silica
- Universita del Salento, Lecce (Italy). National Nanotechnology Lab. of Istituto Nanoscienze-CNR; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Universita del Salento, Lecce (Italy). National Nanotechnology Lab. of Istituto Nanoscienze-CNR; Univ. of Cambridge (United Kingdom). Cavendish Lab.
- Universita del Salento, Lecce (Italy). National Nanotechnology Lab. of Istituto Nanoscienze-CNR; Istituto Italiano di Tecnologia, Arnesano-LE (Italy). Center for Biomolecular Nanotechnologies @UNILE
- Italian Inst. of Technology, Genova (Italy)
- Johannes Gutenberg Univ., Mainz (Germany). Univ. Medical Centre, Inst. for Physiological Chemistry
- Universita del Salento, Lecce (Italy). National Nanotechnology Lab. of Istituto Nanoscienze-CNR and Dipartimento di Matematica e Fisica "Ennio De Giorgi"; Istituto Italiano di Tecnologia, Arnesano-LE (Italy). Center for Biomolecular Nanotechnologies @UNILE
Silicon is the second most common element on the Earth’s crust and its oxide (SiO2) the most abundant mineral. Silica and silicates are widely used in medicine and industry as well as in micro- and nano-optics and electronics. However, the fabrication of glass fibres and components requires high temperature and non-physiological conditions, in contrast to biosilica structures in animals and plants. Here, we show for the first time the use of recombinant silicatein-α, the most abundant subunit of sponge proteins catalyzing biosilicification reactions, to direct the formation of optical waveguides in-vitro through soft microlithography. The artificial biosilica fibres mimic the natural sponge spicules, exhibiting refractive index values suitable for confinement of light within waveguides, with optical losses in the range of 5–10 cm–1 , suitable for application in lab-on-chips systems. This method extends biosilicification to the controlled fabrication of optical components by physiological processing conditions, hardly addressed by conventional technologies.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division; European Research Council (ERC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1624573
- Journal Information:
- Scientific Reports, Vol. 2, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Supercontinuum Generation in Naturally Occurring Glass Sponges Spicules
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journal | July 2016 |
Self-healing, an intrinsic property of biomineralization processes
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journal | March 2013 |
Optical Properties of Diatom Nanostructured Biosilica in Arachnoidiscus sp: Micro-Optics from Mother Nature
|
journal | July 2014 |
Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors
|
journal | September 2015 |
Efficient silica synthesis from tetra(glycerol)orthosilicate with cathepsin- and silicatein-like proteins
|
journal | November 2018 |
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