What is VSEM?
VSEM (Virtual Scanning Electron Microscope) is a software teaching and training package for both new and experienced SEM users. It includes:
- A SEM Simulator (Fig.1) which reproduces the imaging operations and user interface of a real instrument. This is for user familiarisation and training away from a laboratory environment. When fully implemented, the simulator will reproduce the majority of the controls available on a generic SEM. Changing the simulated microscope's control settings results in the imaging effects observed on a real instrument being replicated in the simulation window.
- A software encyclopaedia (Fig.2) of SEM science and operating procedures. This is a reference tool for users to access information about the SEM as they require it. Although it contains similar information to that contained within VSEM's online courses (see below), the material may be accessed more directly via the encyclopaedia making it better for general, non-sylabus driven research.
- A web-based courseware system for teaching and assessment of SEM users. VSEM uses the modern open source Course Management System (CMS), Moodle, to deliver structured courses about the SEM. This provides a highly customisable training environment which can be tailored to the requirements of the different situations in which it will be used.
The entire system is integrated in such a way that the encyclopaedia and simulator may be built into courses as they are delivered to the user. Teaching delivered to the student may therefore make direct use of these advanced training resources.
Fig.1: Screen shot of the VSEM simulator showing the controls for adjusting the electron lenses. The sample is Gold on Carbon.
Fig.2: Screen shot of the VSEM encyclopaedia showing a page from the introductory section outlining how the SEM works.