biostudies-literatureSeo DKorea Research Institute of Ships and Ocean Engineering721https://www.ebi.ac.uk/biostudies/studies/S-EPMC11673239biostudies-literatureUnknown9(12)Although the Doppler velocity log is widely applied to measure underwater fluid flow, it requires high power and is inappropriate for measuring low flow velocity. This study proposes a fluid flow sensor that utilizes optical flow sensing. The proposed sensor mimics the neuromast of a fish by attaching a phosphor to two pillar structures (A and B) produced using ethylene propylene diene monomer rubber. The optical signal emitted by the phosphor is measured using a camera. An experiment was conducted to apply an external force to the reactive part using a push-pull force gauge sensor to confirm the performance of the proposed sensor. The optical signal emitted by the phosphor was obtained using an image sensor, and a quantitative value was calculated using image analysis. A simulation enviroBiomimetics (Basel, Switzerland)Optical Flow Sensor with Fluorescent-Conjugated Hyperelastic Pillar: A Biomimetic Approach.PMC11673239PES5191Seo DLee SPark JYoon SOh SHan SByun SHfalseOptical Flow Sensor with Fluorescent-Conjugated Hyperelastic Pillar: A Biomimetic Approach.Although the Doppler velocity log is widely applied to measure underwater fluid flow, it requires high power and is inappropriate for measuring low flow velocity. This study proposes a fluid flow sensor that utilizes optical flow sensing. The proposed sensor mimics the neuromast of a fish by attaching a phosphor to two pillar structures (A and B) produced using ethylene propylene diene monomer rubber. The optical signal emitted by the phosphor is measured using a camera. An experiment was conducted to apply an external force to the reactive part using a push-pull force gauge sensor to confirm the performance of the proposed sensor. The optical signal emitted by the phosphor was obtained using an image sensor, and a quantitative value was calculated using image analysis. A simulation enviro2024-01-01T00:00:00Z2024 Nov2025-04-04T01:32:50.285Z2025-04-04T01:32:50.285ZS-EPMC116732393972772510.3390/biomimetics9120721