Bifunctional Laser-Induced Graphene Platforms for Integrated Electrochemical Sensing and Matrix-Free LDI-MS Quantitation of Sarcosine.
This work introduces a dual-modality analytical platform based on laser-induced graphene (LIG) for the label-free, noninvasive detection of the prostate cancer biomarker sarcosine in human urine. The tunable porosity and high conductivity of LIG enable its bifunctional application as both a sensitive electrochemical el...