Piezoresistive pressure sensors for various biomedical applications 1

Piezoresistive pressure sensors are commonly used in various biomedical applications to measure and monitor pressure changes inside and outside of living organisms. It is based on the piezoresistive effect, which is the principle that the resistance value changes under the action of force. The DS2450S piezoresistive pressure sensor has the advantages of high sensitivity, fast response speed, and small size, and is therefore widely used in pressure measurement and monitoring tasks in the biomedical field.diode

The basic structure of a piezoresistive pressure sensor includes an elastic thin film and a pair of electrodes. The thin film is usually made of metal or semiconductor materials. When subjected to external pressure, the thin film will deform, causing a change in the resistance value between the electrodes. This change can indirectly measure the magnitude of pressure by measuring the change in resistance value.diode

In biomedical applications, piezoresistive pressure sensors are widely used in the following fields:

1. Blood pressure monitoring: Piezoresistive pressure sensors can be embedded into blood pressure monitors to measure changes in arterial blood pressure. Place the sensor inside a blood vessel or artery, and when blood passes through, pressure acts on the sensor, causing its resistance value to change, thereby measuring blood pressure.diode