Angle-Resolved Cathodoluminescence: Opening New Possibilities in Materials Science, Geology & Nanophotonics
This webinar will function as an introduction to cathodoluminescence for researchers in nanophotonics, plasmonics, solar cells, geology, and nanomaterials science. Participants will learn about the different types of CL generation and how they are relevant to different fields of research. The experimental setup of the DELMIC SPARC will be demonstrated including how angle-resolved CL is performed. The broad applicability of this technique will be illustrated using several experimental examples from the fields of nanophotonics, materials science and geology.
The webinar will be held on June 21 at 3pm AEST.
There is NO COST to attend.
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Recently, electron-beam spectroscopy techniques have emerged as powerful probes in nanoscience due to their ability to generate, probe, and control light at length scales far below the diffraction limit of light. Taking advantage of the extremely high spatial resolution, novel techniques have appeared that combine electron beam excitation with optical spectroscopy. Spatially-resolved cathodoluminescence (CL) spectroscopy, in which the electron-beam-induced radiation is collected inside an electron microscope, is one of these techniques that holds great potential for nanoscience. For a long time CL spectroscopy was mainly used in geology to analyze and identify minerals, but in the past two decades its scope has expanded significantly. Recently it has been used to study fundamental optical properties of a myriad of metallic, semiconductor, and dielectric (nano)materials in the fields of materials science, geology, and nanophotonics, including plasmonics and metamaterials. Delmic have developed a special version of CL spectroscopy in which they can both effectively measure the emitted spectrum as well as the angular emission distribution (SPARC). This webinar will discuss the different types of CL generation and how they are relevant to different fields of research. Subsequently, we will introduce the experimental setup and how angle-resolved CL is performed. To demonstrate the broad applicability we will show several experimental examples from the fields of nanophotonics, materials science, and geology.
Speaker – Dr. Toon Coenen
The webinar will be hosted by DELMIC’s in-house application specialist, Toon Coenen. Toon studied at University College Utrecht. After obtaining his BSc degree there he went on to study chemistry and physics at Utrecht University where he obtained a MSc degree in 2010. He continued for a PhD at the FOM Institute AMOLF in Amsterdam, the Netherlands, in 2014 in professor Albert Polman’s group. There he co-developed the first version of the SPARC cathodoluminescence detection system and used it to investigate the nanoscale optical properties of various metallic and dielectric nanostructures. During his PhD he also was a visiting scientist at Stanford University in the group of professor Mark Brongersma, performing EELS experiments on plasmonic structures. He now works at Delmic BV as application specialist, developing novel cathodoluminescence applications and improving the cathodoluminescence system as a whole.