Archive for February 14, 2017

Scientists accidentally create nanorods that harvest water from the air

Researchers have accidentally created nanorods that can absorb water at low humidity and expel it as the humidity increases
Learning from your mistakes is a key life lesson, and it’s one that researchers at Pacific Northwest National Laboratory (PNNL) can attest to. After unintentionally creating carbon-rich nanorods, the team realized its accidental invention behaves weirdly with water, demonstrating a 20-year old theory and potentially paving the way to low-energy water harvesting systems and sweat-removing fabrics.

Researchers have accidentally created nanorods that can absorb water at low humidity and expel it as the humidity increases

The researchers note that ordinarily materials will absorb more water as the humidity in the air around them increases. But between 50 and 80 percent relative humidity, these nanorods will actually do the opposite and expel water, a behavior they say is not shared by any other material. Below that range, they behave as normal, so the process is reversible by lowering the humidity again. Read more