Scientists have made rigid crystals stretchy in a new study

Scientists have developed a new method for making hard crystals capable of stretching to more than double their original length.

@AdamHuntTT
Published Wed, Dec 8 2021 6:30 AM CST   |   Updated Sun, Jan 2 2022 6:16 PM CST

In a new study published in the journal Chem, researchers have modified crystalline structures to make them stretchy.

Scientists have made rigid crystals stretchy in a new study 01 | TweakTown.com

Chenfeng Ke, Assistant Professor of Chemistry at Dartmouth College, and his research team have designed carbon-based, porous crystals that can stretch to more than double their length.

"Picture a diamond that behaves like a rubber band," said Ke.

Porous organic frameworks are built from light organic elements like carbon, oxygen, and nitrogen. They form lattice structures with pores forming in the spaces between atoms, which means they can be used as filters for certain pollutants in fluids that can pass through the structure.

Scientists can chemically alter the structure by adding different molecular crosslinks, and the researchers were able to add what they call "soft joints" to the lattice. The joints are comprised of ions that repel one another but are held in place by the interactions between them and other molecules in the crystal. When the specific chemicals are presented, the ions are repelled, and the crystal expands. When placed in phenol, the crystal swelled to twice its length in less than 20 minutes, returning to its original shape in half the time once the phenol was washed away.

Ke hopes to see the research employed in applications like water filtration, where the crystals can absorb impurities.

You can read more from the study here.

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NEWS SOURCES:doi.org, phys.org

Adam grew up watching his dad play Turok 2 and Age of Empires on a PC in his computer room, and learned a love for video games through him. Adam was always working with computers, which helped build his natural affinity for working with them, leading to him building his own at 14, after taking apart and tinkering with other old computers and tech lying around. Adam has always been very interested in STEM subjects, and is always trying to learn more about the world and the way it works.

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