Africa: Citizen Scientists Pitch New Uses for Paper Microscope

Photo: PrakashLab/Stanford University

Stanford bioengineer Manu Prakash, PhD, is giving away 10,000 build-your-own paper microscope kits to citizen scientists with the most inspiring ideas for things to do with this new invention.

Ten thousand 'print-and-fold' paper microscopes initially designed as low-cost medical diagnostic tools are being given away to researchers and citizen scientists who come up with novel ways to use them to test their ideas.

The goal of the Ten Thousand Microscopes initiative, funded by the Gordon and Betty Moore Foundation, is to create a crowdsourced lab manual for Foldscope, the low-cost microscope launched earlier this year by a US bioengineering team that combines pragmatic, origami design with sophisticated micro-optics.

The idea is to make "microscopy for everyone", says Manu Prakash, a bioengineering researcher at Stanford University, United States, who led the development of the frugal innovation to address the lack of cheap, easy-to-use diagnostic tools for diseases in remote and impoverished communities.

Assembled from a single sheet of paper, Foldscope microscopes are fitted with tiny ball lenses - about the size of a grain of salt - that can magnify samples up to 2,000 times.

Yet, as well as being lightweight, Foldscope is durable and, at roughly 50 US cents each, cheap enough to manufacture and distribute on a large scale, according to Prakash.

"We wanted to find a method by which we could manufacture [microscopes] in large enough quantities and at an extremely low cost, while keeping the design simple so that they could last out in the field and be used by anyone," he says.

Foldscope is undergoing field trials in India and Uganda as a diagnostic tool for malaria, sleeping sickness and schistosomiasis, with the results due to be published later this year.

And the Stanford team is developing 30 Foldscope variants to target specific pathogens and diseases by using add-ons such as LED lights and fluorescent filters.

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Africa: Citizen Scientists Pitch New Uses for Paper Microscope