The Internet of Things (IoT) has transformed industries by enabling seamless data collection, automation, and real-time decision-making. A critical component of IoT systems is advanced sensing technology capable of high sensitivity, selectivity, and energy efficiency. Quantum dots (QDs), nanoscale semiconductor particles with unique optoelectronic properties, have emerged as a revolutionary material for next-generation sensors. This paper provides an in-depth study of quantum dot-based sensors and their integration into IoT applications. We explore the fundamental principles of QDs, their advantages over conventional sensing technologies, and various types of QD-based sensors, including optical, chemical, and biological sensors. Additionally, we examine their applications in environmental monitoring, healthcare, industrial automation, and smart agriculture. The challenges related to stability, scalability, and costs are discussed, along with future research directions to enhance the performance and adoption of QD-based IoT sensors.
Quantum dots, IoT, nanosensors, environmental monitoring, healthcare, smart agriculture, wearable sensors
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