NanoImages Publishes Decision Guide for SNE-Alpha Analytical Add-Ons

28 October 2026. NanoImages has published a decision guide for choosing among the five analytical add-ons available for its SNE-Alpha benchtop scanning electron microscope. The SNE-Alpha carries factory ports for electron dispersive spectroscopy (EDS), Raman, electron backscatter diffraction (EBSD), cathodoluminescence (CL) and electron-beam-induced current (EBIC). The guide links to separate articles the company published on each technique this fall.

The guide frames each technique by the question it answers. EDS provides fast elemental identification and mapping on nearly any solid, with no special preparation beyond standard SEM mounting. Raman reads chemical bonds, covering polymer identity, pharmaceutical polymorphs, graphitic order and mineral phases. EBSD measures grain size from orientation boundaries, texture, phase discrimination and local strain. CL reads light emitted by the sample, activated by trace elements at levels EDS cannot detect. EBIC maps whether junctions collect charge, showing shorts, dead zones and recombination sites in semiconductors.

The guide lists limits for each method. EDS identifies elements rather than molecules, and rough-surface quantification is semi-quantitative. Metals are Raman-silent, the laser spot is micron-scale and fluorescence can swamp weak signals. EBSD requires crystalline samples and relies on polish quality because patterns come from the top tens of nanometers. Not all phases luminesce, with iron-rich phases sitting dark. EBIC needs a junction and electrical contact.

The company recommends starting with EDS for most quality control, failure-analysis and general materials labs. Raman is suggested where molecular identity drives decisions, such as polymers, pharma, carbon materials and recycling. EBSD is aimed at metals-structure labs that can commit to polishing. CL targets geoscience and semiconductor photonics, and EBIC is for semiconductor work.

The guide states that the ports are factory-ready and the add-ons install in the field. Most Alpha systems start with EDS and add techniques later. The company says combining techniques on one stage allows a feature found in backscattered electron imaging to be analysed without a sample transfer.

Source: NanoImages, LLC news