Graphene quantum dot bolometer for on-chip detection of organic radical Article Swipe

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Bolometer Quantum dot Graphene Optoelectronics Graphene quantum dot Chip Materials science Nanotechnology Chemistry Physics Detector Optics Computer science Telecommunications

Jakub Hrubý , Oleksii Laguta , Antonín Sojka , Luke St. Marie , R.L. Myers-Ward , D. Kurt Gaskill , A. El Fatimy , Paola Barbara , Petr Neugebauer ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.1063/5.0191087 · OA: W4393005763

We present a proof-of-concept magnetic resonance detection of organic radical 2,2-diphenyl-1-picrylhydrazyl via a nanostructured on-chip graphene quantum dot bolometer. In a common electron paramagnetic resonance setup, the microwave propagates from a source into a sample and back to a detector. Yet, by using on-chip detection, it is possible to skip the whole detection arm and, thus, mitigate lab expenses on instrument and cooling costs. The bolometric detection was demonstrated at a frequency of 151 GHz and a temperature of 15 K.