News

Next month Delmic is going to participate in two very interesting events, dedicated to multimodal analysis and correlative microscopy.

Join the first online live demonstration of the SPARC system with Delmic product manage Toon Coenen and application specialist Sangeetha Hari. This live session is a unique opportunity to learn about the possibilities of the cathodoluminescence detector, learn about the software and imaging process. The demonstration will take place on May 20th at 11 AM (CEST).

The new paper, which was published in Physical Review Letters, studies two-dimensional hexagonal photonic lattices of silicon Mie resonators with a topological optical band structure in the visible spectral range. The local optical density of states is mapped with deep subwavelength resolution, and the results show evidence of topological edge states at the domain walls between topological and trivial lattices.

In order to explain the possibilities of energy-momentum cathodoluminescence technique we prepared a technical note, which is now available for download. This technique, also known as wavelength and angle-resolved cathodoluminescence (WARCL), combines“conventional” angle-resolved CL imaging with hyperspectral CL imaging. Energy-momentum imaging approach opens up new ways for studying optical properties of(nano)materials in wavelength/energy and angle/momentum space in great detail.

We are excited to announce that we are preparing the first webinar dedicated to spectrally and angle-resolved cathodoluminescence, an imaging technique also known as lens-scanning energy-momentum (LSEK) cathodoluminescence. This unique technique allows acquiring hybrid multidimensional high-resolution angle-resolved hyperspectral datasets. To put it simply, it uses the principle of angle-resolved imaging but allows users to acquire high resolution datasets both in angle and wavelength, for any given location on the sample. The data gained with energy-momentum cathodoluminescence can be particularly beneficial in the fields of nanophotonics and materials science. 

Cathodoluminescence imaging is a powerful tool for acquiring data from geological samples. Our new technical note describes in detail an acquisition mode called large-area hyperspectral cathodoluminescence imaging. Large-area(LA) spectral acquisition mode can be specifically used for imaging spatially extended specimen such as zircons and other minerals.

A new study, co-written by scientists from AMOLF and Delmic and published in ACS Photonics, investigates the factors that determine the spatial resolution of coherent cathodoluminescence as a deep-subwavelength imaging technique. This is done by examining nanoscale excitation of Ag nanocubes with coherent cathodoluminescence imaging. 

If you are working in the field of biology, you probably know the struggle of combining electron microscopy imaging with light microscopy. Correlative light and electron microscopy(CLEM) is a powerful technique which makes it possible to combine the labelling power of fluorescence imaging with high resolution structural information acquired with electron imaging. This technique has been used for studying biological samples in the fields of marine microbiology, cancer research, neuroscience and, most recently, virology.

A new interesting study on "Merging transformation optics with electron-driven photon sources" was published in Nature Communications. The research was done by scientists from the Max Planck Institute for Solid State Research in Stuttgart, AMOLF, and the University of Stuttgart. The study combines optical modelling and design of a plasmonic metasurface lens, with electron energy-loss spectroscopy (EELS) and cathodoluminescence (CL) experiments to characterize its properties. The experiments demonstrate that such surfaces can be used in the future for hybrid pump-probe experiments and/or spectral interferometry. 

If you are attending AMAS XV (the Fifteenth Biennial Symposium organized by Australian Microbeam Analysis Society) next week and you are interested in learning more about cathodoluminescence imaging, you have a chance to talk with our application specialist Sangeetha Hari, who is going to be one of the speakers.