This device could end up having important implications in the industrial and health sectors, but at the user level it could also be used.
As you well know, the technology OLED is in our phones and TVs, and delivers a more colourful, brighter and sharper picture.
And scientists in Australia argue that OLED in phones and televisions they could eventually be used as quantum sensors to generate images of magnetic fields.
This advance has been created by UNSW of Sydney and allows to measure the electric and optical magnetic fields without using lasers.
“Our findings show that OLEDs, a commercially available technology, can be used not only for displays and lighting, but also for quantum sensing and magnetic field imaging by integrating a small piece of microwave electronics.says Dr. rugang geng.
“If this technology is developed properly, people could simply use their smartphones to map the magnetic fields around them, for example, to detect flaws in diamonds or jewelry. This also has applications in industry, such as finding defects in building materials or as a biomedical sensor.“, Add.
And in the statement they explain that the emission of light through an OLED exploits the charge characteristics of electrons, which have a negative charge, and also holes, which have a positive charge.
Both have another intrinsic property called spin which is sensitive to external magnetic fields and the spin can change its direction under MRI conditions.
“By measuring the signal change, both in electrical current and light emission, induced by such a flip-flop, we can detect the strength of any magnetic field the device is exposed to.Geng adds.
One technology and several uses
So, by integrating an OLED with a microwave resonator, they managed to create an oscillating magnetic field in the device, allowing each pixel on the screen to act as a small magnetic field sensor.
The resulting device makes use of a camera and microwave electronics to detect magnetic waves, and these would have a number of uses for users.
As the researchers have said, this technology is used to map the magnetic fields around the user to detect defects in diamonds or jewelry, or to find defects in construction materials or as a biomedical sensor, recent more focused uses for companies.