ARC Centre of Excellence in Exciton Science, School of Physics, UNSW Sydney, Sydney, NSW, 2052, Australia.
Nat Commun. 2023 Mar 15;14(1):1441. doi: 10.1038/s41467-023-37090-y.
Quantum sensing and imaging of magnetic fields has attracted broad interests due to its potential for high sensitivity and spatial resolution. Common systems used for quantum sensing require either optical excitation (e.g., nitrogen-vacancy centres in diamond, atomic vapor magnetometers), or cryogenic temperatures (e.g., SQUIDs, superconducting qubits), which pose challenges for chip-scale integration and commercial scalability. Here, we demonstrate an integrated organic light emitting diode (OLED) based solid-state sensor for magnetic field imaging, which employs spatially resolved magnetic resonance to provide a robust mapping of magnetic fields. By considering the monolithic OLED as an array of individual virtual sensors, we achieve sub-micron magnetic field mapping with field sensitivity of ~160 µT Hz µm. Our work demonstrates a chip-scale OLED-based laser free magnetic field sensor and an approach to magnetic field mapping built on a commercially relevant and manufacturable technology.
由于其具有高灵敏度和空间分辨率的潜力，磁场的量子传感和成像引起了广泛的关注。用于量子传感的常见系统要么需要光学激发（例如，金刚石中的氮空位中心、原子蒸气磁力计），要么需要低温（例如，SQUIDs、超导量子比特），这给芯片级集成和商业可扩展性带来了挑战。在这里，我们展示了一种基于集成有机发光二极管 (OLED) 的固态磁场成像传感器，该传感器采用空间分辨磁共振来提供磁场的稳健映射。通过将单片 OLED 视为单个虚拟传感器的阵列，我们实现了具有 ~160 µT Hz µm 场灵敏度的亚微米磁场映射。我们的工作展示了一种基于芯片级 OLED 的无激光磁场传感器，以及一种基于商业相关且可制造技术的磁场映射方法。
