Nanotechnology | St. Louis Public Radio

Nanotechnology

A Washington University researcher holds a piece of paper coated with tiny gold particles that can be used to test blood for Zika virus.
Provided | Washington University School of Medicine

Scientists at Washington University in St. Louis are developing a test for the Zika virus that produces results quickly and don't require refrigeration. 

To test for the Zika virus, which is transmitted by mosquitos and is linked to birth defects, blood samples have to be sent to a laboratory, where a positive or negative result is generated in a couple days. The blood and the chemicals used in the test have to be refrigerated. Researchers at Wash U's medical and engineering schools created a test for the virus using nanotechnology, or particles smaller than 100 nanometers. It shows results in a matter of minutes.

Engineers at Washington University used locusts to test a nasal spray that could be used to treat brain cancer and other diseases.
Washington University

Washington University researchers are developing a device that could vastly improve how doctors treat cancer and other diseases in the brain. 

Delivering drugs to the brain is complicated because the three-pound organ is shielded by a complex network of blood vessels, called the blood-brain barrier, that keeps out foreign substances. However, the fortress of vessels works so well that it's challenging to provide medication through a pill or an injection.

The Wash U device could change everything. It would deliver tiny particles by nasal spray.

Provided by Washington University in St. Louis

The future of clean water may depend on developing technologies that aim to clean dirty water. With that in mind, engineers at Washington University are using nanotechnology, the manipulation of materials on a molecular level, to develop a foam that can remove salt and contaminants from water.

(Image courtesy of the George Gokel Laboratory)

Nanotechnology is the science of the very small.

Nanoscientists manipulate matter at the scale of atoms and molecules – often ending up with materials that behave very differently than their macroscale counterparts.

Women who are diagnosed with breast cancer may soon be helped by a discovery made in 1880 by Alexander Graham Bell.