Pollutant particles with a smaller diameter, density, and flow rate can enter the deep lung, but large particles with a low density may also enter the deep airways, according to a study. Researchers ...

(Nanowerk News) Physicists at JILA, the joint physics institute of the University of Colorado at Boulder and the National Institute of Standards and Technology, have made their "quantum crystal" of ...

Powder is a collection of single solid particles, which in most cases may be considered a basic unit. Powder is typically comprised of solid particles, interparticle voids, as well as open and closed ...