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Snippet: Permanent liquid magnets

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 Physics   |   Science   |   Technology
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Description

These little magnets are made of liquid. But unlike the dancing ferrofluids you've probably seen elsewhere on YouTube, they stay magnetized even without the presence of external magnets.

A team writing this week in Science found that jamming iron-based nanoparticles at the interface of two liquids led to this characteristic. The liquid magnets can be shaped and moved by magnetic forces, electricity, and pH.

Read more: https://science.sciencemag.org/content/365/6450/264

Credit: X. Liu et al., Science 2019

About Science Snippets:

These videos are short snippets from researchers' workoften videos actually used as data in a study or to demonstrate results in a paper. For context or additional explanation, check paper links and credits.

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