Morphology Controlled Fabrication of Rare Earth Magnetic Materials Using Engineered Biosystems
Abstract
The core goal of our BIO-INC project is to demonstrate the viability of engineered proteins as templates to create magnetically active rare earth element (REE) nanoparticles by examining relationships between protein structure/functionality, REE chemistry, nanomaterials structure/morphology, and subsequent magnetic properties. Using two different protein templates, filamentous gamma-prefoldin (gammaPFD) and encapsulation protein cages, REE nanoparticles were synthesized onto either wild-type (WT) proteins or those functionalized with previously established REE binding motifs, focusing mostly on Dy-based materials. To date, our best-performing material exceeds the 15-month milestone of saturation magnetization of > 100 emu/g, while our lowest coercivity values are approaching the < 10 Oe 15-month benchmark. Advanced characterization methods, including high resolution (HR) cryo-electron microscopy (Cyro-EM) and advanced synchrotron scattering and spectroscopy experiments, have been integrated into our workflow to help establish synthesis-structure-property relationships to help guide future materials design.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 2024
- Accession Number
- AD1231193
Entities
People
- Nicholas M Bedford
- Yuwei Yang
Organizations
- University of New South Wales