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Related Experiment Video

Updated: Apr 29, 2026

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

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Published on: January 16, 2021

A high-sensitivity current sensor utilizing CrNi wire and microfiber coils.

Xiaodong Xie¹, Jie Li², Li-Peng Sun³

¹Institute of Photonics Technology, Jinan University, Guangzhou 510632, China. xxd7288100@gmail.com.

Sensors (Basel, Switzerland)

|May 15, 2014

Summary

This summary is machine-generated.

Researchers achieved ultra-high current sensitivity using a microfiber wrapped on a thin chromium-nickel wire. This novel structure shows potential for advanced low-current sensing and tunable filtering applications.

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Published on: March 8, 2020

Area of Science:

Materials Science
Electrical Engineering
Nanotechnology

Background:

Current sensing technologies often face limitations in sensitivity and miniaturization.
Developing highly sensitive sensors is crucial for detecting low electrical currents in various applications.

Purpose of the Study:

To develop a novel structure for achieving extremely high current sensitivity.
To investigate the relationship between structure parameters and current sensitivity.
To explore potential applications in low-current sensing and tunable filtering.

Main Methods:

Wrapping a microfiber around a thin-diameter chromium-nickel wire to create a unique structure.
Measuring the current sensitivity of the fabricated structure.
Analyzing the influence of metal wire resistivity and diameter on sensitivity.

Main Results:

Achieved an unprecedented current sensitivity of 220.65 nm/A² for a 35 μm structure.
Demonstrated sensitivity two orders of magnitude higher than existing literature.
Identified that higher resistivity and/or thinner metal wire diameter enhance sensitivity.

Conclusions:

The presented microfiber-on-wire structure offers a significant advancement in current sensing technology.
The structure exhibits potential for highly sensitive low-current detection.
This technology could enable highly electrically-tunable filtering applications.