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Hot‐Spot Engineering Through Soft Actuators for Surface‐Enhanced Raman Spectroscopy (SERS) Applications
Author(s) -
Liman Gorkem,
Yildiz Emrecan,
Ilhan Hasan,
Cetin Arif E.,
Demirel Gokhan
Publication year - 2021
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.202100009
Subject(s) - raman spectroscopy , materials science , surface enhanced raman spectroscopy , nanotechnology , hot spot (computer programming) , plasmon , fabrication , folding (dsp implementation) , actuator , signal (programming language) , raman scattering , optoelectronics , computer science , optics , mechanical engineering , medicine , physics , alternative medicine , pathology , artificial intelligence , programming language , engineering , operating system
Surface‐enhanced Raman spectroscopy (SERS) is a powerful analytical tool to detect molecular species at ultralow concentrations. However, considering current approaches, controlling and tuning plasmonic hot‐spot formations where the Raman signal enhancements maximize are still challenging due to high process cost, complexity, and inability of large‐area fabrication. To address these problems, a strategy is demonstrated based on the controlled folding of polymeric materials, which is a new perspective in the field of SERS. Manipulation of hot‐spot formations through controlled polymer folding enables a Raman signal enhancement up to 70 folds for the probe methylene blue molecule. Furthermore, sample collection and analysis have been successfully implemented through the magnetic field control of the platform motion and folding manipulation. The results demonstrate that soft actuator platforms can bring new modalities in sensing applications.