Dr Carlota Ruiz de Galarreta received her PhD in physics/engineering from the Centre for Doctoral Training in Metamaterials at the University of Exeter (United Kingdom), under the supervision of Prof. C. David Wright and Dr. Jacopo Bertolotti. During her PhD studies, she has been involved in the understanding, design, nano-fabrication and characterisation of reconfigurable metasurfaces in the visible, optical telecom and THz spectral regimes. More specifically, she has been working in the development of novel compact photonic devices enabled by the combination of metasurfaces having exotic electromagnetic properties, with chalcogenide phase-change materials (typically employed in non-volatile memories), whose refractive indices can be selectively and abruptly controlled on-demand via thermal stimuli. This includes active beam steerers with no moving parts, reconfigurable and multilevel spectral filters/de-multiplexers, or tuneable super absorbers/modulators.

Dr Ruiz de Galarreta is now a postdoctoral research fellow at the Nano Engineering Science and Technology department (University of Exeter) led by Prof. David Wright, where she keeps working in the development of active phase-change photonic “meta-devices”, with particular emphasis on how to improve their functionality and reliability to real-world applications. Since November 2019, Dr Ruiz de Galarreta is carrying out a research stage at Laser Processing Group (IO-CSIC, Madrid) led by Dr. Javier Solis and Dr Rosalia Serna, where she is currently learning laser-induced nano-patterning techniques and exploring their reliability towards achieving metasurface large scale fabrication processes. She is also investigating and re-visiting some of the most fundamental physical properties of novel and traditional chalcogenide phase-change materials for a better understanding of what compositions are most optically and thermally suited for the successful development of phase-change material based reconfigurable photonics.

List of publications/conferences available at:

https://emps.exeter.ac.uk/engineering/staff/cr408/publications