Crash! Scientists explain what happens when nanoparticles…

Crash! Scientists explain what happens when nanoparticles collide

Study results could one day inform the design of new materials for protective gear, energy-harvesting devices and more

Helmets that do a better job of preventing concussions and other brain injuries. Earphones that protect people from damaging noises. Devices that convert “junk” energy from airport runway vibrations into usable power.

New research on the events that occur when tiny specks of matter called nanoparticles smash into each other could one day inform the development of such technologies.

Using supercomputers, scientists led by the University at Buffalo modeled what happens when two nanoparticles collide in a vacuum. The team ran simulations for nanoparticles with three different surface geometries: those that are largely circular (with smooth exteriors); those with crystal facets; and those that possess sharp edges.

“Our goal was to lay out the forces that control energy transport at the nanoscale,” says study co-author Surajit Sen, PhD, professor of physics in UB’s College of Arts and Sciences. “When you have a tiny particle that’s 10, 20 or 50 atoms across, does it still behave the same way as larger particles, or grains? That’s the guts of the question we asked.”

“The guts of the answer,” Sen adds, “is yes and no.”

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ancientarthistory: Kalisanatha Temple – Southeast…

ancientarthistory:

Kalisanatha Temple – Southeast Asian/Hindu

Ellora, India

500 – 1800 CE

This is a site made up of 34 shrines built into a cliff. This is the temple at the site, the king built it to represent Mt. Kailasa, the mountain that Shiva used to live in. The exterior of the temple has reliefs of animals on it that tell stories. 

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Nether Largie South Cairn, Kilmartin Glen, Argyll, Scotland,…

Nether Largie South Cairn, Kilmartin Glen, Argyll, Scotland, 1.4.18.

One of the oldest monuments in the Glen, this cairn was reused and reworked extensively throughout the Neolithic and Bronze Age. The interior of the cairn features a series of smaller chambers and later burials took place in cist cairns offcentre from the main chambers.

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