Detecting E.coli Strains Using Molecular Electronics

New technology developed by Josh Hihath and colleagues at UC Davis uses atomically fine electrodes to suspend a DNA probe that binds target RNA. The device is able to detect as little as a one-base change in RNA, enough to detect toxic strains of E. coli.

By AditiĀ Risbud Bartl

Finding a fast and inexpensive way to detect specific strains of bacteria and viruses is critical to food safety, water quality, environmental protection and human health. However, current methods for detecting illness-causing strains of bacteria such as E. coliĀ require either time-intensive biological cell cultures or DNA amplification approaches that rely on expensive laboratory equipment.