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An Event-Driven Sensor Based on Colloidal Quantum Dots for Contactless Human-Machine Interaction

Authors: ZHANG Zinan; SHEN Li; HUANG Fei; RAN Wenhao; WEI Bin; DENG Qingsong; TIAN Jianjun; SHEN Guozhen; WANG Zhuoran

DOI: 10.1007/s40843-025-3997-9Status: Verified Translated Edition
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Key Findings in This Report

• • The event-driven sensor achieves a gesture recognition accuracy exceeding 92.5%, enabling reliable UAV control in real-time HMI scenarios. • • In a simulated 10-second scene at 1920×1080 resolution, the event-based sensor generates an average file size of 7.5 MB, compared to 14.8 MB for a frame-based sensor, representing a 49.3% reduction in data redundancy. • • The device architecture (Sb-doped TiO2/QDs/PEDOT:PSS) is solution-processed and two-terminal, simplifying fabrication and potentially lowering production costs compared to complex DVS circuits. • • The hybrid HMI system combines event-driven sensing for low-latency gesture control with frame-based sensing for high-precision gaze control, demonstrating a scalable strategy for multi-stage tasks.