Open AccessSynthesis of SERS-encoded nanotags: From single nanoparticles to highly brilliant complex core-satellite structures
Author(s) -
Nicolás Pazos-Pérez,
Ramón A. ÁlvarezPuebla
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1461/1/012127
Subject(s) - satellite , fabrication , nanotechnology , nanoparticle , scalability , core (optical fiber) , materials science , raman spectroscopy , computer science , physics , engineering , optics , aerospace engineering , medicine , alternative medicine , pathology , composite material , database
In this work, we report novel methods to produce SERS encoded nanoparticles (SEPs). Either as single nanoparticles (NPs) or as more complex core-satellites structures. Single NPs are produced in an easy and fast one-pot approach which, are further use as building blocks to produce the core–satellite SEPs. The presented protocols are very versatile allowing the NPs SERS codification with an extensive variety of Raman codes. Moreover, this protocol can be applied to different NPs materials and shapes. Furthermore, the core–satellite SEPs are designed to exhibit minimal interparticle distances (<2–3 nm) with maximum satellite loading (i.e., maximum number of hot spots per assembly), while positioning the encoding agents at the gaps to achieve a very high optical efficiency. In addition to such versatility, these fabrication methods are simple, cheap, scalable and robust, yielding stable SPEs in high yields.