Operating conditions of TEM

Microscopic Characterization
Category General
Difficulty Level Normal
Audience Level General
Description Microscopic characterization methods refer to scientific techniques Which allow determination of both composition and structure of a material. Optical microscopy, scanning probe microscopy and electron microscopy are known as microscopic techniques. This course illustrates how microscopic characterization techniques are used.
Overview
Microscopic methods play an essential role in nanomaterials characterization. Microscopic and X-ray based characterization of nanomaterials techniques are used for the determination of surface morphology and dispersion characteristics of nanomaterials. This course deals with details of these aspects, and will provide a fundamental understanding of morphological tools, such as instrumentation, sample preparation and different kinds of analyses, etc.


Booklet
Description
 The dark and light field images obtained from the sample using transmission electron microscopy (TEM), provide us important information about the components of a sample. In light and dark field images, the dark and light points both are related to heavier atoms, respectively. Hence, the thickness and the types of the materials can be discussed from a TEM image.
Mental Challenge
 How we can recognize a dark field image from the light field image? 
Quizzes and Activities
 Activity: Describe the sample preparation of a carbon material coated with a silver layer.  
Further Reading Sources
 1.  https://www.pdx.edu/sites/www.pdx.edu.cemn/files/TEM_manual.pdf 

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Section 8