Integrated optofluidic microsystem based on vertical high-order one-dimensional silicon photonic crystals
In this work, fabrication and testing of an optofluidic microsystem exploiting high aspect-ratio, vertical, silicon/air one-dimensional (1D) photonic crystals (PhC) are reported. The microsystem is composed of an electrochemically micromachined silicon substrate integrating a 1D PhC featuring high-o...
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| Veröffentlicht in: | Microfluidics and nanofluidics 2012, Vol.12 (1-4), p.545-552 |
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| creator | Barillaro, G. Merlo, S. Surdo, S. Strambini, L. M. Carpignano, F. |
| description | In this work, fabrication and testing of an optofluidic microsystem exploiting high aspect-ratio, vertical, silicon/air one-dimensional (1D) photonic crystals (PhC) are reported. The microsystem is composed of an electrochemically micromachined silicon substrate integrating a 1D PhC featuring high-order bandgaps in the near-infrared region, bonded to a glass cover provided with inlet/outlet holes for liquid injection/extraction in/out the PhC-itself. Wavelength shifts of the reflectivity spectrum of the photonic crystal, in the range 1.0–1.7 μm, induced by flow of different liquids through the PhC air gaps are successfully measured using an in-plane all-fibre setup, thanks to the PhC high aspect-ratio value. Experimental results well agree with theoretical predictions and highlight the good linearity and high sensitivity of such an optofluidic microsystem in measuring refractive index changes. The sensitivity value is estimated to be 1,049 nm/RIU around 1.55 μm, which is among the highest reported in the literature for integrated refractive index sensors, and explained in terms of enhanced interaction between light and liquid within the PhC. |
| doi_str_mv | 10.1007/s10404-011-0896-0 |
| format | Article |
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Experimental results well agree with theoretical predictions and highlight the good linearity and high sensitivity of such an optofluidic microsystem in measuring refractive index changes. 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M.</creatorcontrib><creatorcontrib>Carpignano, F.</creatorcontrib><title>Integrated optofluidic microsystem based on vertical high-order one-dimensional silicon photonic crystals</title><title>Microfluidics and nanofluidics</title><addtitle>Microfluid Nanofluid</addtitle><description>In this work, fabrication and testing of an optofluidic microsystem exploiting high aspect-ratio, vertical, silicon/air one-dimensional (1D) photonic crystals (PhC) are reported. The microsystem is composed of an electrochemically micromachined silicon substrate integrating a 1D PhC featuring high-order bandgaps in the near-infrared region, bonded to a glass cover provided with inlet/outlet holes for liquid injection/extraction in/out the PhC-itself. 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M.</au><au>Carpignano, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Integrated optofluidic microsystem based on vertical high-order one-dimensional silicon photonic crystals</atitle><jtitle>Microfluidics and nanofluidics</jtitle><stitle>Microfluid Nanofluid</stitle><date>2012</date><risdate>2012</risdate><volume>12</volume><issue>1-4</issue><spage>545</spage><epage>552</epage><pages>545-552</pages><issn>1613-4982</issn><eissn>1613-4990</eissn><abstract>In this work, fabrication and testing of an optofluidic microsystem exploiting high aspect-ratio, vertical, silicon/air one-dimensional (1D) photonic crystals (PhC) are reported. The microsystem is composed of an electrochemically micromachined silicon substrate integrating a 1D PhC featuring high-order bandgaps in the near-infrared region, bonded to a glass cover provided with inlet/outlet holes for liquid injection/extraction in/out the PhC-itself. Wavelength shifts of the reflectivity spectrum of the photonic crystal, in the range 1.0–1.7 μm, induced by flow of different liquids through the PhC air gaps are successfully measured using an in-plane all-fibre setup, thanks to the PhC high aspect-ratio value. Experimental results well agree with theoretical predictions and highlight the good linearity and high sensitivity of such an optofluidic microsystem in measuring refractive index changes. The sensitivity value is estimated to be 1,049 nm/RIU around 1.55 μm, which is among the highest reported in the literature for integrated refractive index sensors, and explained in terms of enhanced interaction between light and liquid within the PhC.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s10404-011-0896-0</doi><tpages>8</tpages></addata></record> |
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| ispartof | Microfluidics and nanofluidics, 2012, Vol.12 (1-4), p.545-552 |
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| subjects | Analytical Chemistry Applied fluid mechanics Biomedical Engineering and Bioengineering Crystals Engineering Engineering Fluid Dynamics Exact sciences and technology Fabrication Fluid dynamics Fluidics Fundamental areas of phenomenology (including applications) Linearity Liquids Nanostructure Nanotechnology and Microengineering Optical elements, devices, and systems Optics Photonic band gaps Photonic crystals Physics Refractive index Refractivity Research Paper Silicon |
| title | Integrated optofluidic microsystem based on vertical high-order one-dimensional silicon photonic crystals |
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