Nanoribbon Yarn with Versatile Inorganic Materials

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Nanomaterial-based yarns offer high surface-area-to-volume ratios, flexibility, and anisotropic conductivity.
• Current fabrication methods predominantly use organic materials like polymers, graphene, and carbon nanotubes.
• There is a need for inorganic nanomaterial-based yarns to expand applications.

Purpose of the Study:

• To present a novel fabrication method for fully inorganic nanoribbon yarn.
• To demonstrate the versatility of the method using various inorganic materials.
• To explore the application of these yarns in chemical sensing and energy transduction.

Main Methods:

• Inorganic material deposition onto a nanoline mold.
• Suspension of nanoribbons via plasma etching of the nanoline mold.
• Twisting of nanoribbons into yarn using a custom yarning machine.

Main Results:

• Successful fabrication of inorganic nanoribbon yarns from materials including Au, Pd, Ni, Al, Pt, WO3, SnO2, NiO, In2O3, and CuO.
• Demonstrated utility of yarns in palladium-based hydrogen sensors and metal oxide gas sensors.
• Utilized yarns as electrodes for water splitting and in triboelectric nanogenerators.

Conclusions:

• The developed method provides a versatile strategy for fabricating diverse inorganic nanomaterial-based yarns.
• Inorganic nanoribbon yarns show significant potential for next-generation chemical sensors and green energy devices.
• This fabrication approach enables the scaling of nanomaterial properties to macro-scale yarn structures.