Understanding water-repellent enzymes

The ability of some molecules, such as fatty or oily molecules, to repel water is known as hydrophobicity. The opposite, water attracting, is hydrophilicity. The hydrophobic force that keeps water molecules at bay is one ...

Winds spread PFAS pollution far from a manufacturing facility

Concerns about environmental and health risks of some fluorinated carbon compounds used to make non-stick coatings and fire-fighting foams have prompted manufacturers to develop substitutes, but these replacements are increasingly ...

Polymer membranes could benefit from taking a dip

Many industrial processes rely on thin membranes that can clean water, for example, by filtering out impurities. In recent years, a technique called atomic layer deposition (ALD) has been used to tune these membranes for ...

POCKET DNA-testing kit uses smartphone to detect mutations

A team of researchers affiliated with several institutions in China and one in the U.S. has developed the POCKET DNA-testing kit—a small, inexpensive system that uses a 3-D-printed integrated chip and a smartphone to perform ...

Blocking sugar structures on viruses and tumor cells

During a viral infection, viruses enter the body and multiply in its cells. Viruses often specifically attach themselves to the sugar structures of the host cells, or present characteristic sugar structures on their surface ...

A possible end to 'forever' chemicals

Synthetic chemicals known as per- and polyfluoroalkyls, or PFAS, contain bonds between carbon and fluorine atoms considered the strongest in organic chemistry. Unfortunately, the widespread use of these nonbiodegradable products ...

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