Fabricating Nanoporous Silica Structure on D-Fibres through Room Temperature Self-Assembly

Materials

John Canning³  Lucas Moura³  Lachlan Lindoy³  Kevin Cook³  Maxwell J. Crossley⁴  Yanhua Luo¹  Gang-Ding Peng¹  Lars Glavind²  George Huyang³  Masood Naqshbandi³  Martin Kristensen²  Cicero Martelli⁵ 

[1]Photonics & Optical Communications, School of Electrical Engineering and Telecommunications, the University of New South Wales, Sydney, NSW 2052, Australia

[2] E-Mails:

[3]Department of Engineering, Finlandsgade 22, Aarhus University, Aarhus N 8200, Denmark

[4] E-Mails:

[5]interdisciplinary Photonics Laboratories (iPL), School of Chemistry, the University of Sydney, Sydney, NSW 2006, Australia

[6] E-Mails:

[7]School of Chemistry, the University of Sydney, Sydney, NSW 2006, Australia

[8] E-Mail:

[9]Graduate School of Electrical Engineering and Applied Computer Science, Federal University of Technology-Paraná, Curitiba PR 80230-901, Brazil

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关键词: lab-in-a-fibre;    lab-on-fibre;    nanoparticles;    biochemical;    self-assembly;    microfibers;    filters;    nanoreactions;    sensors;   

DOI  :  10.3390/ma7032356

来源: mdpi

【 摘 要 】

The room temperature deposition of self-assembling silica nanoparticles onto D-shaped optical fibres (“D-fibre”), drawn from milled preforms fabricated by modified chemical vapour deposition (MCVD), is studied. Vertical dip-and-withdraw produces tapered layers, with one end thicker (surface coverage >0.85) than the other, whilst horizontal dip-and-withdraw produces much more uniform layers over the core region. The propagation of induced fracturing over the core region during drying is overcome using a simple protrusion of the inner cladding. Thick coatings are discernible through thin film interference colouring, but thinner coatings require scanning electron microscopy (SEM) imaging. Here, we show that fluorescence imaging, using Rhodamine B, in this example, can provide some qualitative and speedy assessment of coverage.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland