Highly Ordered Two-Dimensional MoS₂ Archimedean Scroll Bragg Reflectors as Chromatically Adaptive Fibers

Area of Science:

• Materials Science and Engineering
• Nanotechnology
• Optoelectronics

Background:

• Nanostructured fibers offer unique properties for advanced applications.
• Two-dimensional (2D) materials possess anisotropic optical, electrical, and thermal characteristics.
• Scroll fiber architectures enable the integration of 2D materials for enhanced functionality.

Purpose of the Study:

• To fabricate single-layer Archimedean scroll fibers using 2D materials.
• To investigate the optical properties of these novel nanostructured fibers.
• To explore the potential of these fibers in multifunctional textile and composite applications.

Main Methods:

• Utilized chemical vapor deposited (CVD) monolayer molybdenum disulfide (MoS2) and hexagonal boron nitride (hBN).
• Fabricated Bragg reflector scroll fibers incorporating MoS2/PMMA and MoS2/polydimethylsiloxane composites.
• Employed transfer matrix methods for simulating optical spectra and characterized hBN emission.

Main Results:

• Achieved scroll fibers with cross-sections from single 2D molecular layers.
• Demonstrated Bragg reflector fibers exhibiting anisotropic reflection at 630-709 nm with a memory effect.
• Incorporated few-layer hBN into scroll fibers, achieving photon emission at 576 nm.

Conclusions:

• Single-layer scroll fibers integrating 2D materials are feasible.
• These nanostructured fibers exhibit tunable optical properties, including wavelength-selective reflection and emission.
• The developed scroll fiber composites leverage the unique anisotropic properties of 2D materials for advanced applications.