Review on the Preparation, Performance, and Applications of Advanced Materials in Wearable PPG Sensors 1

A wearable PPG sensor is a sensor technology that monitors human physiological parameters through optical principles. PPG stands for photoplethysmography, a non-invasive physiological signal detection technique based on photoelectric detection. PPG sensors typically consist of an LED light source and a CD14538BF3A photosensitive component. diode The LED emits light that irradiates the skin surface, with a portion absorbed and another portion reflected back to the sensor through the skin. Changes in blood flow speed affect the intensity of the reflected light, enabling functions such as heart rate monitoring and blood oxygen saturation monitoring. Due to its compact size, portability, and low power consumption, this sensor is widely used in wearable devices like smart rings, smartwatches, and sports bands, providing users with health monitoring and exercise data analysis functionalities.diode

Wearable PPG sensors are essential technological tools for monitoring heart rate and blood oxygen saturation. The application of advanced materials in PPG sensors is crucial for their performance. Below is a review on the preparation, performance, and applications of advanced materials in wearable PPG sensors diode

1. Preparation of Advanced Materials:

1. Selecting appropriate materials: Commonly used advanced materials include optoelectronic materials, flexible substrate materials, conductive materials, etc. Choosing the right materials is crucial for enhancing sensor performance.

2. Preparation Process: Special attention must be paid to the thin-film preparation techniques of materials, such as sputtering, solution methods, and printing, to ensure material purity and uniformity.diode