Kern, MichalChu, AnhAnders, Jens2025-05-2220241613-75070937-9347http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-164200https://elib.uni-stuttgart.de/handle/11682/16420https://doi.org/10.18419/opus-16401In this article we provide an overview of chip-integrated voltage-controlled oscillator (VCO)-based EPR detection as a new paradigm in EPR sensing. After a brief motivation for this alternative detection method, we provide a self-contained overview of the detection principle, both for continuous-wave and pulsed detection. Based on this introduction, we will highlight the advantages and disadvantages of VCO-based detection compared to conventional resonator-based detection. This is followed by an overview of the current state of the art in VCO-based EPR and interesting emerging applications of the technology. The paper concludes with a brief summary and outlook on future research directions.enCC BYinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/621.3article2025-01-24