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Watch this wooden knife cut effortlessly through juicy, medium-well-done steak - Ars Technica

Watch this wooden knife cut effortlessly through juicy, medium-well-done steak - Ars Technica

Watch this wooden knife cut effortlessly through juicy, medium-well-done steak - Ars Technica
Oct 21, 2021 1 min, 8 secs

Researchers at the University of Maryland (UMD) have figured out a simple, affordable method for creating natural wood materials that are 23 times harder than typical woods, according to a new paper published in the journal Matter.

They tested their hardened wood samples by fashioning a wooden knife and several wooden nails and found that the performance of both matched or exceeded that of their steel counterparts?

“When you look around at the hard materials you use in your daily life, you see many of them are man-made materials because natural materials won’t necessarily satisfy what we need,” said co-author Teng Li, a materials scientist at UMD.

“Cellulose, the main component of wood, has a higher ratio of strength to density than most engineered materials, like ceramics, metals, and polymers, but our existing usage of wood barely touches its full potential,” said Li. That's because wood isn't nearly as strong as pure cellulose.

Cellulose only makes up between 40-50 percent of wood; the rest is hemicellulose and lignin (a binding agent).

came up with a practical and affordable manufacturing method for creating hardened wood by removing its weaker components (i.e., the lignin).

Three different batches of wood samples and solution were boiled at 100 degrees Celsius for two, four, and six hours, respectively, and the samples were then rinsed with deionized water to remove any lingering chemicals.

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