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Pressure Gauges

Pressure Gauges

Most pressure gauges, like those on scuba tanks, are calibrated to read zero at atmospheric pressure. Readings from such gauges are called the gauge pressure, which is the pressure relative to atmospheric pressure. When the pressure inside the tank exceeds atmospheric pressure, the gauge reports a positive value. Some gauges are designed to measure negative pressure. For example, many physics experiments must take place in a vacuum chamber, a rigid chamber from which some of the air is pumped...

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Production of a Strain-Measuring Device with an Improved 3D Printer

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Published on: January 30, 2020

Laser patterned graphene pressure sensor with adjustable sensitivity in an ultrawide response range.

Siyuan Zhang¹, Chao Yang¹, Zhengpan Qi¹

¹School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, People's Republic of China.

|June 11, 2024

Summary

This study introduces a novel laser patterned graphene pressure sensor (LPGPS) with adjustable sensitivity for ultrawide pressure ranges. This flexible sensor offers tunable sensitivity, enabling diverse applications in wearable electronics and healthcare.

Keywords:

adjustable sensitivity flexible pressure sensor patterned laser-induced graphene ultrawide response range

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Published on: March 24, 2023

Area of Science:

Materials Science
Nanotechnology
Sensor Technology

Background:

Flexible pressure sensors are crucial for wearable electronics, human-computer interfaces, and healthcare.
Achieving adjustable sensitivity across an ultrawide response range remains a significant challenge for current pressure sensor designs.

Purpose of the Study:

To develop a laser patterned graphene pressure sensor (LPGPS) with tunable sensitivity and an ultrawide response range.
To leverage a pre-stretched kirigami structure for adjustable sensitivity in flexible pressure sensors.

Main Methods:

Fabrication of a laser patterned graphene pressure sensor (LPGPS) utilizing a pre-stretched kirigami structure.
Tuning sensor sensitivity by adjusting the pre-stretched level of the kirigami structure.
Characterization of sensor performance, including sensitivity, response range, detection limit, response time, and stability.

Main Results:

The LPGPS demonstrated adjustable sensitivity, achieving a maximum of 0.243 kPa⁻¹, and an ultrawide response range up to 1600 kPa.
The sensor exhibited a low detection limit of 6 Pa, a rapid response time of 42 ms, and excellent stability under high pressure (1200 kPa for 500 cycles).
The sensor successfully detected physiological and kinematic signals, showcasing its potential for diverse pressure intensities.

Conclusions:

The proposed LPGPS offers adjustable sensitivity and an ultrawide response range, addressing key limitations in current flexible pressure sensor technology.
The laser programmable patterning allows for easy configuration into arrays for pressure distribution mapping.
This sensor technology holds significant potential for advanced applications in wearable electronics and human-computer interfaces.