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Jordi Arbiol

Jordi Arbiol

Catalan Institution for Research and Advanced Studies, Spain

Title: Free-standing nanostructures at atomic scale: From growth mechanisms to local properties at the nanoscale

Biography

Jordi Arbiol graduated in Physics at Universitat de Barcelona (UB). He also obtained his PhD (European Doctorate and PhD Extraordinary Award) in the field of Transmission Electron Microscopy (TEM) applied to nanostructured materials. He was an Assistant Professor at UB. He has served as a Group Leader at Institut de Ciència de Materials de Barcelona, ICMAB-CSIC. He is currently the Vice President of the Spanish Microscopy Society (SME), apart from being a leader of the Group of Advanced Electron Nanoscopy at Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST). He has been awarded with the 2014 EMS Outstanding Paper Award, the EU40 Materials Prize 2014 (E-MRS), listed in the Top 40 under 40 Power List (2014) by The Analytical Scientist and the PhD Extraordinary Award in 2001 (UB).

Abstract

Technology at the nanoscale has become one of the main challenges in science as new physical effects appear and can be modulated at will. Superconductors, materials for spintronics, electronics, optoelectronics, sensing, energy applications and new generations of functionalized materials are taking advantage of the low dimensionality, improving their properties and opening a new range of applications. As developments in materials science are pushing to the size limits of physics and chemistry, there is a critical need for understanding the origin of these unique physical properties (optical and electronic) and relate them to the changes originated at the atomic scale, e.g.: linked to changes in (electronic) structure of the material. In the present work, I will show how combining advanced electron microscopy imaging with electron spectroscopy, as well
as cathodoluminescence in an aberration corrected STEM will allow us to probe the elemental composition and electronic structure simultaneously with the optical properties in unprecedented spatial detail. The talk will focus on several examples in advanced nanomaterials for optical, plasmonic and energy  pplications. In this way the latest results obtained by my group on direct visualizing and modeling materials at atomic scale will help to understand their growth mechanisms (sometimes complex) and also correlate their physical properties (electronic and photonic) at sub-nanometer with their atomic scale
structure. The examples will cover a wide range of nanomaterials: Quantum structures self-assembled in a nanowire - quantum wires (1D) and quantum dots (0D) and other complex nanowire-like morphologies for photonic and energy applications (LEDs, lasers, quantum computing, single photon emitters, water splitting cells, batteries), nanomembranes and 2D sheets; as well as metal multiwall nanoboxes and nanoframes for 3D plasmonics.