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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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Updated: Jun 22, 2026

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

Ultra-Sensitive Dual-Resonator Graphene Pressure Sensor with Temperature Self-Compensation.

Zhen Wan¹, Cheng Li^1,2, Zhengwei Wu³

¹School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing, 100191, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|November 6, 2025

Summary

This summary is machine-generated.

This study introduces a highly sensitive graphene nanomechanical pressure sensor that overcomes silicon sensor limitations. Its novel design offers superior pressure detection and integrated temperature self-compensation for demanding applications.

Keywords:

dual‐resonator graphene pressure sensor temperature self‐compensation ultra‐sensitive

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Published on: March 24, 2023

Area of Science:

Materials Science
Nanotechnology
Sensor Technology

Background:

Silicon resonator sensors face limitations in detecting minute pressure variations due to structural constraints.
Graphene nanomechanical resonators present a promising alternative due to their minimal thickness and superior mechanical characteristics.

Purpose of the Study:

To develop a highly sensitive graphene nanomechanical pressure sensor with integrated temperature self-compensation.
To surpass the performance limitations of existing silicon-based pressure sensors.

Main Methods:

Fabrication of a dual-resonator system using vacuum anode-bonded graphene.
One resonator is designed for pressure and temperature sensitivity, the other for temperature only.
Cancellation of thermal effects by analyzing the difference in resonant frequencies.

Main Results:

Achieved a sensitivity of 24.1 kHz/kPa over a wide pressure range (0.001–500 kPa), 68 times higher than state-of-the-art silicon sensors.
Demonstrated low full-scale hysteresis error (0.31%) and excellent repeatability (0.75%).
Exhibited a maximum pressure error of 6.51 kPa across -40 to 120 °C, yielding 1.302% FS accuracy.

Conclusions:

The developed graphene nanomechanical sensor offers unprecedented sensitivity and accuracy for pressure measurement.
Integrated temperature self-compensation enhances reliability across a broad temperature range.
The sensor shows significant potential for high-sensitivity pressure sensing in aerospace, automotive, and healthcare industries.