期刊
OPTICS EXPRESS
卷 17, 期 7, 页码 5075-5082出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.005075
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- Icelandic Science and Technology Policy Council Research Programme for Nanotechnology
- University of Iceland Research Fund
- Reykjavik Energy Environmental and Energy Research Fund
We describe a new evanescent-wave fluorescence excitation method, ideally suited for imaging of biological samples. The excitation light propagates in a planar optical waveguide, consisting of a thin waveguide core sandwiched between a sample in an aqueous solution and a polymer with a matching refractive index, forming a symmetric cladding environment. This configuration offers clear advantages over other waveguide-excitation methods, such as superior image quality, wide tunability of the evanescent field penetration depth and compatibility with optical fibers. The method is well suited for cell membrane imaging on cells in culture, including cell-cell and cell-matrix interaction, monitoring of surface binding events and similar applications involving aqueous solutions. (C) 2009 Optical Society of America
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