In the world of molecular chemistry, bigger is not better.

In order for scientists to… In the world of molecular chemistry, bigger is not better.

In order for scientists to study the behavior of the smallest particles in the universe, they need the smallest instruments engineering can provide.

For two Pitt professors, the inescapable need to go smaller led to the presentation of the tiniest test tube ever made this week, according to a University press release.

The single-walled carbon nanotube (SWNT) was developed by Pitt’s John Yates, Mellon Professor of Chemistry, and Karl Johnson, Whiteford Professor of Chemical Engineering.

SWNTs are specially engineered carbon molecules with a cylindrical shape. The mouth of the tube is the width of about three atoms.

Just like its larger brother, the SWNT can hold and isolate whatever is inside from whatever is outside.

At the molecular level, this kind of isolation allows scientists to observe unique chemical properties that don’t necessarily occur in ordinary configurations, the release said.

SWNTs may also be used to contain certain chemicals during a reaction in order to prevent them from reacting.

In a practical sense, Yates’ and Johnson’s research into SWNTs may lead to advancements in time-released medications that take effect over a period of time, as well as filters and gas masks able to efficiently and effectively isolate specific toxins.

Yates began studying nanotubes in the 1990s with Nobel Laureate Richard Smalley, whose pioneering research was honored at the 232nd meeting of the American Chemical Society in San Francisco this week.