Article: AIP: Spin Phenomena From nano to geo

Updated: Feb 11, 2019

In English 10.09.2018

Spintronic stands for Spin Electronics. In modern data storage technologies spintronic is used, for instance, in hard-drives and MRAMs - both of them probably already present in your laptops. To read and write the information, very precise nano and microelectronic devices must be fabricated: down to the nanoscale, every single wire, contact, insulation, etc., must be perfectly placed and orchestrated with precision of 1/10,000 of a human hair. Why? Spintronic devices are so sensitive that any tiny -and we mean a very small one-misalignment could hinder its functionality. Only when everything is in place, then we can then work out how to manipulate the magnetic part of this story and thus store your favorite movies and music. If spintronic devices are so sensitive, then why not using them as sensors to detect motion or position? This is a very old idea indeed and magnetic sensors are present in our day-to-day life as well: when you close the lid of your laptop it is a magnet approaching a magnetic sensor who tells the computer to go standby. With the recent appearance of internet and wireless technologies, the magnetic sensors have become a viable option to deploy across large areas sensors to measure distances. Geology and building structure health have welcomed the magnetic sensors as a contact-less solution that can deal with water. Note that water is perhaps the number one enemy in outdoor devices: it gets thru any pore and damages the electronics of the sensing parts - that must be exposed to be able to sense, there is no way around it, you can protect everything except the "sensing parts". Fortunately, magnetic sensors are not that affected by this limitation because as magnetic fields nearly feel plastic, water and air as the same thing. Therefore, encapsulation can completely cover the magnetic sensor thus significantly extending the usable lifetime of sensors.

Our department, has developed and algorithm to analyze in real-time the data generated by magnetic positioning sensors. In the recent years, we have been analyzing data from installations in Austria, Canary Islands and, last week, Spain. (See the academic papers attached below). Our interdisciplinary mindset has attracted the attention of the Spanish Embassy in Prague who has co-organized a bilateral meeting to be held on the 15th of November in the Czech Academy of Sciences headquarters to re-ignite the scientific cooperation between Spain and the Czech Republic and has selected this project for the inaugural talk of the event.

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