EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Hacker News·Jul 23·5 min read
A solid-state "atomic channel" for separating rare earth elements
TL;DR
Researchers at UChicago have developed a novel method using manganese oxide to separate rare earth elements without toxic chemicals, enhancing purification efficiency.
✦ Why It Matters
Consider exploring manganese oxide applications in your own materials processing to reduce environmental impact.
Key Takeaways
- Investigate manganese oxide for ion separation in your applications.
- Explore electrochemical methods to reduce reliance on toxic solvents.
- Consider the implications of cleaner processing on supply chain logistics.
- Stay updated on advancements in rare earth element purification technologies.
How It Works
The method utilizes manganese oxide with engineered channel widths that allow selective separation of rare earth ions based on the size of their hydration shells. Lighter ions with larger water shells are less tightly bound, while heavier ions with smaller shells are held more firmly.
The addition of magnesium ions stabilizes the channel structure, enhancing the separation efficiency.