Tag: fluids

With a New Chip, Scientists Use Chemistry to Identify Fluids (And Write Secret Messages)

By Veronique Greenwood | August 4, 2011 1:38 pm

wink
Each fluid reveals a different letter.

What’s the News: Scientists have developed a chip that can instantaneously identify fluids applied to it, just from their unique surface tension. In a handheld device, it could help toxic site remediators figure out what that ominous clear liquid is. And there’s a bonus for the kids-in-the-treehouse user demographic: different secret messages can appear on the chip depending on what fluid is applied.

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