Recently accepted in Nanoscale, this paper explores phase transitions of polarization topology in single spherical ferroelectric nanoparticles of PbTiO3 and BaTiO3. This work highlights some interesting dielectric properties of these systems that emerge as a size-dependent phenomena and shown that they can be manipulated by adjusting the materials combination of the configuration. Serge and John investigated this system with our collaborators at Argonne National Laboratory and with Pamir Alpay and his graduate student Yomery Espinal here at UConn.

Click the below image for an animation in browser:

Mangeri et al, Nanoscale, 2017,9, 1616-1624

This is an interview that we have been working on for some time together with Jean Andrews after my colloquium visit to Ohio University (OU) in March of 2014. It is really great that OU is organizing that sort of alumni activity; I especially appreciated an opportunity to mingle with graduate students and show them what, in principle, could be done with a PhD degree from OU Physics. Plus, naturally, being interviewed gave me a platform to reminisce about the good old days, when pressures of making tenure, raising external funding and getting into high-impact journals were non-existent.

Anyway, here is the link: Physics Alum Is a Digital Alchemist Transforming Matter.