MXene-Based Textile-Integrated Dry Electrodes for Surface Electromyography (sEMG).

Area of Science:

• Biomedical Engineering
• Materials Science
• Wearable Technology

Background:

• Surface electromyography (sEMG) requires reliable, comfortable electrodes.
• Existing dry electrodes often face challenges with adhesion, signal quality, and long-term wearability.
• Textile integration offers potential for improved comfort and conformability in wearable biosensors.

Purpose of the Study:

• To develop and characterize a textile-integrated dry sEMG electrode system utilizing a layered MXene structure.
• To evaluate the adhesion, signal performance, and biocompatibility of the novel electrode design.
• To demonstrate the potential for long-term, self-administered sEMG monitoring.

Main Methods:

• Fabric substrate pretreatment with tannic acid to enhance adhesion.
• Deposition of layered MXene films onto the treated fabric.
• Morphological and chemical analysis (FTIR) for material characterization.
• Mechanical testing (tensile peeling) for adhesion assessment.
• Skin-contact impedance and sEMG signal measurements.

Main Results:

• Tannic acid pretreatment successfully enhanced adhesion and MXene deposition.
• The textile-integrated electrodes exhibited stable adhesion and reliable sEMG signal transmission comparable to gel electrodes.
• Multi-layered MXene electrodes demonstrated superior sEMG signal strength.
• The electrodes showed no skin irritation or residue and maintained integrity under mechanical stress.

Conclusions:

• The proposed MXene-based textile electrode system offers a comfortable and effective solution for dry sEMG.
• The tannic acid pretreatment and layered MXene structure are key to achieving robust performance.
• This technology holds promise for advanced biomedical engineering and human-machine interfacing applications.