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Capacitive sensing, also known as capacitance sensing, is a technology used in electrical engineering that uses capacitive coupling to detect and quantify anything that is conductive or has a dielectric other than air.
The dielectric constant of the object being detected is used by the sensors to detect its presence. The hidden object must have a higher dielectric constant than what you are trying to “see through” if you are trying to find something hidden.
Due to their higher capacitance and irrelevant target dielectric constant, conductive targets pose an intriguing challenge to capacitive sensors. Metal, water, blood, acids, bases, and salt water are examples of conductive targets.
These targets are detectable by any capacitive sensor. The tricky part is getting the sensor to stop working when the conductive material is gone.
This is particularly true when working with acids or liquids that stick to the container wall as the level declines below the sensor face, like blood.
The Global dielectric capacitive sensor market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
High performance flexible pressure sensors offer a vast array of application possibilities with the continued development of wearable electronics, health care, and smart terminals.
It is proposed to fabricate a capacitive pressure sensor with a novel preparation method, high sensitivity, and micro-array structured electrodes and dielectric layers with high dielectric constant.
The prepared micro-array structure serves as the framework for highly sensitive sensors. Additionally, as the loading is increased, the contact area between the two electrodes transforms from linear to planar, resulting in a wider linear responding range.
Additionally, the sensitivity of the sensor is increased by a factor of two by adding ceramic dielectric material—barium titanate (BT) fillers—to the dielectric layer to raise its dielectric constant.
