impurity

In this model, a single impurity moves through a sea of fermions, including electrons, protons, or neutrons, while interacting with nearby particles.

From Science Daily ● Jul. 9, 2026

It followed concerns in several countries that the products may contain the impurity.

From BBC ● Oct. 9, 2024

"OTOCs were actually invented in a very different context about 55 years ago, when they were used to look at how electrons in superconductors are affected by disturbances from an impurity," Wolynes said.

From Science Daily ● Apr. 5, 2024

A specific lot labeled L200183 tested high in impurity and low in the inactive ingredient ascorbic acid, commonly called Vitamin C.

From Washington Times ● Aug. 3, 2023

Perhaps she’s the impurity in him, the static in his signal that the bullies can sense.

From "All the Light We Cannot See" by Anthony Doerr

"Our research not only advances the theoretical understanding of quantum impurities but is also directly relevant for ongoing experiments with ultracold atomic gases, two-dimensional materials, and novel semiconductors," adds the Heidelberg physicist.

From Science Daily ● Jul. 9, 2026

In real materials, tiny imperfections such as atomic defects and impurities tend to disrupt these delicate quantum effects, making them nearly impossible to observe.

From Science Daily ● Apr. 15, 2026

The manufacturing process can also introduce impurities — like bacteria or heavy metals — into peptide drugs.

From Salon ● Apr. 4, 2026

Novo Nordisk referenced the FDA's concerns in its lawsuit announcement on Monday, saying Hims & Hers' compounded drugs "may contain dangerous impurities or incorrect amounts of active ingredients, which can result in life-threatening immune responses".

From BBC ● Feb. 10, 2026

"You were changed by the flower itself—I wasn't. Daoud's perfume contained impurities, so the effects were never going to be the same. Just think about it," she said as she rolled her sleeve back down.

From "City of the Plague God" by Sarwat Chadda