Electronic supporting information: Testing gold nanostructures fabricated by hole-mask colloidal lithography as potential substrates for SERS sensor: Sensitivity, signal variability, and the aspect of adsorbate deposition
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چکیده
منابع مشابه
Dimer-on-mirror SERS substrates with attogram sensitivity fabricated by colloidal lithography.
Nanoplasmonic substrates with optimized field-enhancement properties are a key component in the continued development of surface-enhanced Raman scattering (SERS) molecular analysis but are challenging to produce inexpensively in large scale. We used a facile and cost-effective bottom-up technique, colloidal hole-mask lithography, to produce macroscopic dimer-on-mirror gold nanostructures. The o...
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Nanostructuring for tailored optical functionality suffers from a lack of methods for large-area and low-cost fabrication. While electron beam lithography allows different complex shapes to be deposited onto the same substrate layer, the writing process is sequential and the fabrication is very expensive. Large-area methods, such as nanosphere lithography, [ 1 ] colloidal lithography using shad...
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In this thesis, we introduce hole-mask colloidal lithography and nanosphere lithography techniques for low-cost nanofabrication of large-area (about 1 cm) plasmonic nanostructures with different complex shapes. For the first one, we use thin film PMMA-gold hole-masks, which are first prepared with polystyrene colloids, combined with following tilted-angle-rotation evaporation to fabricate large...
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Surface-enhanced Raman scattering (SERS) has become increasingly popular in the scientific and industrial communities because of its analytical capabilities and potential to study fundamentals in plasmonics. Although under certain conditions extremely high sensitivity is possible, the practical use of SERS is frequently limited by instability and poor reproducibility of the enhancement factor. ...
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The surface-enhanced Raman scattering (SERS) effect is considered important for fast detection of characteristic ‘‘fingerprint’’ signatures of analytes. In the SERS effect, a substantial Raman enhancement arises on localized spots (‘‘hot spots’’) in metallic nanostructures owing to strong local electromagnetic fields associated with the surface plasmon resonances of metal nanostructures. SERS o...
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تاریخ انتشار 2016