Johannes is a Lecturer in the Department of Materials and a Royal Society University Research Fellow in the Department of Materials and the Department of Physics at Imperial College London. He is also the Assistant Director of the Centre for Doctoral Training in Theory and Simulation of Materials at Imperial College.
He obtained a Ph.D. in physics from Cornell University in 2010 working in the group of Prof. Tomas Arias. From 2010 to 2014, he was a postdoctoral researcher at UC Berkeley and Lawrence Berkeley National Lab in the groups of Prof. Steven Louie and Prof. Marvin Cohen.
His research interest lies at the interface of theoretical condensed matter physics, chemistry, materials science and scientific computing. He studies the properties of matter using a variety of tools ranging from first principles many-body perturbation theory (GW/BSE method) and density-functional theory to classical force field methods and continuum theories. Currently, he is working on new materials for photovoltaics (for example, polymers), oxide-water interfaces for photoelectrochemistry, two-dimensional materials for electronics and energy storage (such as, graphene-based supercapacitors) and iron-based superconductors.
Roman Castellanos L, Hess O, Lischner J, 2021, Dielectric engineering of hot carrier generation by quantized plasmons in embedded silver nanoparticles, The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, Vol:125, ISSN:1932-7447, Pages:3081-3087
et al., 2020, Effect of bilayer stacking on the atomic and electronic structure of twisted double bilayer graphene, Physical Review B, Vol:102, ISSN:2469-9950, Pages:155146 – 1-155146 – 12
et al., 2020, Electronic Structure Influences on the Formation of the Solid Electrolyte Interphase, Energy and Environmental Science, ISSN:1754-5692
et al., 2020, Frontier orbitals and quasiparticle energy levels in ionic liquids, Npj Computational Materials, Vol:6, ISSN:2057-3960, Pages:1-7
et al., 2020, A molecular shift register made using tunable charge patterns in one-dimensional molecular arrays on graphene, Nature Electronics, Vol:3, ISSN:2520-1131, Pages:598-603