集成式光电关联用（iCLEM）样品制备方法-白皮书

采用极化直接观察纳米光子特征 Rotating plate polarimeter consisting of a quarter-wave plate (QWP) and linear polarizer (LP) • Polarization is different for every emission angle • Correction for the mirror to go from detector to sample plane

长期以来阴极发光成像是地质研究的有力工具。最新的技术说明（technical note）为您讲解大面积高光谱阴极发光成像的采集模式。大面积（large area）光谱采集模式主要用于面积较大标本的阴极发光成像，例如锆石和其他矿物。 为了达到大面积阴极发光成像，特地调整光学模组中的光学器件，故意使狭缝平面中的CL焦点散焦。通过这一技术，我们就可以均匀地收集到较大阴极发光视场（FOV），视场大约~300×200μm2。通过调整狭缝宽度，平衡高效率（HE）和视野大小（与正常CL采集相比）

The new white paper, which demonstrates the possibilities of studying alluvial sapphires from Australia with cathodoluminescence (CL) imaging. This research shows how cathodoluminescence can help to assess crystallisation histories of the precious gemstones and underlying causes for luminescence. While being used for a wide range of geological application, including sedimentary petrology, igneous petrology, metamorphic petrology, crystal growth, and gemstone identification, cathodoluminescence is not a common technique to study natural sapphires. However, it is used on zircons frequently to see zircon growth crystallisation, and due to the color zonation in some sapphires, hyperspectral cathodoluminescence was used (together with laser ablation inductively coupled plasma mass spectrometry) to examine zonation and trace element defects to understand the conditions of sapphire formation. The CL measurements for this research were performed with the SPARC, a cathodoluminescence detector, which was mounted on FEG scanning electron microscope (SEM) from Thermo Fisher Scientific/FEI. The results illustrate a strong correlation between color, trace element concentrations, and spectral CL measurements of sapphires.

While most of the time perovskites are grown in a more traditional shape of thin-films and nanocrystals, it was discovered recently that with the use of carbonate salts perovskite materials can take a large variety of complex 3D shapes.