Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 13: Focus Session: Functional Semiconductor Nanowires I (organized by HL)

TT 13.1: Hauptvortrag

Montag, 16. März 2015, 09:30–10:00, EW 201

Exploring the optical properties of 1D nanomaterials at sub-nanometer scale with a direct correlation to its structure at atomic scale — •Jordi Arbiol — Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, CAT, Spain — Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, E-08193 Bellaterra, CAT, Spain

Technology at the nanoscale has become one of the main challenges in science as new physical effects appear and can be modulated at will. 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. Combining advanced electron microscopy imaging with electron spectroscopy, as well as cathodoluminescence in a STEM will allow us to probe the elemental composition and electronic structure simultaneously with the optical properties in unprecedented spatial detail. The seminar will focus on several examples in advanced nanomaterials for optical and plasmonic applications. In this way the latest results obtained by my group on direct correlation between optical properties at sub-nanometer scale and structure at atomic scale will be presented.