Smartphones could let you test pregnancy

Pregnancy tests are made easier with time and now the scientists are saying that you can even use your smartphone for testing your pregnancy. In fact, not only pregnancy, a smartphone can help one in monitoring diabetes as well.

This is being claimed and developed by the researchers at the Hanover Centre for Optical Technologies (HOT), University of Hanover, Germany. The researchers have been able to develop a self-contained fibre optic sensor for smartphones with the potential for use in a wide variety of Biomolecular tests and these optic sensors can also detect if a woman is pregnant or monitor the sugar level in blood. The readings of the sensor can run through an application on a smartphone which provide real-time results.

The researchers tested this feature in the smartphones as well and they could succeed in noticing that the smartphone user can monitor multiple types of body fluids, including blood, urine, saliva, sweat or breath through the optic sensor inserted in the phone.

Moreover, the sensor readings can be combined with the GPS signal of a smartphone and this can guide the users in finding the next drug store, hospital or the ambulance.

Kort Bremer, co-author of the new study with Bernhard Roth, director, Hanover Centre for Optical Technologies (HOT), University of Hanover, stated, "We have the potential to develop small and robust lab-on-a-chip devices for smartphones. So, surface plasmon resonance sensors could become ubiquitous now."

The sensor uses the optical phenomenon of surface plasmon resonance (SPR), which is a phenomenon commonly used for biosensing, for detecting the composition of a liquid or the presence of particular biomolecules or trace gases.

For testing the process, Bremer carefully excised the polymer coating from a 10 millimetre segment of the optics cable to expose the bare 400 micrometre diameter glass fibre core. Cleaned the segment, subjected it to a silver-coating process, and added a small well to pour the solutions being observed. Then he polished both ends of the fibre to 45 degree angled faces. They were then adhered to the phone's case and to its LED and camera.

The study was published in Optics Express, a journal of The Optical Society.

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