(A-C) The target cell's shadow incrementally shifts across the sensor pixels (D) the ePetri prototype (E-F) the ePetri imaging platform
The ePetri platform is built from Lego blocks and uses a smartphone as a light source. The imaging chip is seen in detail on the right
The ePetri prototype uses an image sensor and a smartphone's LED display as a scanning light source (Image: Guoan Zheng, California Institute of Technology)
When it comes to laboratory equipment, it doesn’t get much more basic than the humble petri dish. Aside from moving from glass to plastic and the addition of rings on their lids and bases that allows them to be stacked, the petri dish has remained largely unchanged since its invention by German bacteriologist Julius Richard Petri and his assistant Robert Koch in the late 1800s. Now researchers at the California Institute of technology (Caltech) have dragged the petri dish into the 21st Century by incorporating an image sensor like those found in mobile phone cameras that does away with the need for bulky microscopes.
« Back to Petri dish gets 21st Century update
Other Images from this Gallery