20.500.12556/RUL-176726 Microdroplet magnetic field sensor utilizing magneto-birefringence effect Despite advancements in magnetometry, achieving precise, real-time local magnetic field sensing in microscale systems remains a significant challenge. Here, a compact and versatile magnetic field sensor is presented that utilizes magnetically induced birefringence in micrometer-sized droplets of an isotropic suspension of magnetic nanoplatelets. By measuring the light intensity with crossed polarizers, it is demonstrated that the sensor's capability to detect magnetic fields in the millitesla range with high sensitivity. Experimental results, supported by numerical simulations, confirm the sensor's accuracy and robustness. Its practical application is validated by measuring the magnetic field of a bent current-carrying wire at the microscale. Additionally, a method is introduced for determining both the magnitude and direction of an unknown field using a specialized polarization camera. This novel approach offers a promising pathway for precise, real-time magnetic field sensing in microfluidic and lab-on-chip applications, combining high spatial resolution with optical detection advantages. magnetic sensors nanoplatelets field-induced birefringence microscale magnetic sensor microfluidics magnetni senzorji magnetometri dvolom mikrofluidna tehnika true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-10 12:47:49 2025-12-10 12:47:55 2025-12-18 04:08:58 0000-00-00 00:00:00 2025 0 0 8 str. iss. 19, art. e00795 Vol. 10 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 537 2365-709X 10.1002/admt.202500795 242136835 Adv_Materials_Technologies_-_2025_-_Horvat_-_Microdroplet_Magnetic_Field_Sensor_Utilizing_Magneto‐Birefringence_Effect.pdf Adv_Materials_Technologies_-_2025_-_Horvat_-_Microdroplet_Magnetic_Field_Sensor_Utilizing_Magneto‐Birefringence_Effect.pdf 1 2AFC148B76B697F0F8E127A522F271AA bde5e8cb62d369ad4967306aa7d30f7177c95febb37f3629d056e6945547ce95 d202704f-d5bd-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223260 https://advanced.onlinelibrary.wiley.com/doi/10.1002/admt.202500795 1 a62f285d-d5bd-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=223259 Fakulteta za matematiko in fiziko 0 0 0