Characterization of Chiro-optic and Dynamical Responses of Bespoke Semiconducting Materials for Spin Transport and Long-Wavelength Information Transmission
Abstract
Polymer-carbon nanotube superstructures in which the polymer wrapping drives sufficient symmetry-breaking to open band gaps in metallic single-walled carbon nanotubes (m-SWNTs) enables unique low band gap spin transport materials and long-wavelength detection materials by design. Combining electronic structural modification of chiral polymers with specialized, well-defined nanotube electronic structures, provides a strategy to realize tailor-made materials important for applications that include night-vision and hostile fire detection, as well as novel devices that rely on electron spin filtering and propagation for information transmission. Key to the development of these novel chiral nano materials are experimental capabilities that- (i) measure both the temperature-dependent excited-state dynamics of and long wavelength chiro-optical signals associated with these structures over broad temperature regimes, and (ii) provide chiro-optic characterization of chiral semiconductors and conductors as a function of dielectric environment over long-wavelength spectral regions. These experimental capabilities will lay the groundwork necessary for establishing important structure-function relationships that determine the electronic, vibronic, and chiroptical properties of low band gap chiral metals and semiconductors, and the mechanisms by which energy, charge, electron spin, and information are transported in these systems.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502510069
Entities
People
- Michael Therien
Organizations
- Air Force Office of Scientific Research
- Duke University
- United States Air Force