Blobs of water encased in nanoparticles can be carved into precise shapes with a laser, and even turned into a kind of miniature lab device.
When water is added to a gel of hydrophobic silicon dioxide nanoparticles, it naturally forms a pancake-shaped blob. Fei Li at Xi’an Jiaotong University in China and her colleagues have discovered that these blobs can be carved into extremely precise shapes using a high-powered laser. These shapes maintain…