Enhancing the Performance of Planar SERS Sensors with Pyroelectrohydrodynamic Jet Printing.

ABSTRACT: An alternative method for fabricating planar surface-enhanced Raman spectroscopy (SERS) sensors, offering enhanced performance compared to conventional drop-casting techniques, is presented. We synthesized stable gold nanoparticles (AuNPs) with an average diameter of 16 ± 2 nm and developed two types of SERS sensors using pyro-electrohydrodynamic jet printing (p-jet) technology. The first sensor, printed on a glass substrate, featured a corona pattern with sensing areas aligned to the laser spot size, enabling efficient sampling with minimal material waste. The second sensor, fabricated on a dithiol-functionalized gold substrate, demonstrated uniform nanoparticle coverage. SERS activity was evaluated using p-Mercaptoaniline (pMA), yielding intense and reproducible spectra. Raman imaging co

SUBMITTER: Pannico M 

PROVIDER: S-EPMC12492332 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature