1 research outputs found
Plasmonic Cavity for Self-Powered Chemical Detection and Performance Boosted Surface-Enhanced Raman Scattering Detection
With the popularization of the Internet of Things, the
application
of chemical sensors has become more and more extensive. However, it
is difficult for a single functional sensor to meet multiple needs
at the same time. For the next generation of chemical sensors, in
addition to rapid qualitative and quantitative detection, it is also
necessary to solve the problem of a distributed sensor power supply.
Triboelectric nanogenerator (TENG) and surface-enhanced Raman scattering
(SERS) are two emerging technologies that can be used for chemical
testing. The combination of TENG and SERS technology is proposed to
be an attractive research strategy to implement qualitative and quantitative
analysis, as well as self-powered detection in one device. Herein,
the Ag nanoparticle (NP)@polydimethylsiloxane (PDMS) plasmonic cavity
is demonstrated, which can be exploited not only as a SERS substrate
for qualitative analysis of the target molecules but also as a TENG
based self-powered chemical sensor for rapid quantitative analysis.
More importantly, the as-designed plasmonic cavity enables prolonged
triboelectric field generated by the phenomena of triboelectricity,
which in turn enhances the “hot spot” intensities from
Ag NPs in the cavity and boosts the SERS signals. In this way, the
device can have good feasibility and versatility for chemical detection.
Specifically, the measurement of the concentration of many analytes
can be successfully realized, including ions and small molecules.
The results verify that the proposed sensor system has the potential
for self-powered chemical sensors for environmental monitoring and
analytical chemistry