Electron Microscopy: What Does Coronavirus Look Like?
The structures of a virus can be elucidated by using the high resolving power of scanning electron microscopy.
Electron Microscopy: What Does Coronavirus Look Like? Read Post »
Electron Microscope (SEM) is a powerful technique for examining and analysing the surface properties and features of a wide range of materials. By generating high-resolution images at the nanoscale, SEM has transformed multiple fields, including materials science, biology, and archaeology. This essay delves into the fundamental principles of SEM, its key components, and diverse applications.
Basic Principles of SEM
Scanning Electron Microscopy relies on the interaction between a focused electron beam and the specimen under investigation. The primary electron beam, produced by an electron gun, is accelerated and focused onto the sample surface using a series of electromagnetic lenses. When the electron beam strikes the surface, it generates various signals, including secondary electrons, backscattered electrons, and characteristic X-rays. By detecting these signals, SEM can generate high-resolution images and reveal valuable information about the sample’s topography, composition, and crystallographic structure.
Key Components of the Scanning Electron Microscopy
In biological research, SEM examines cellular structures, tissue organisation, and the morphology of microorganisms. It enables scientists to study cellular interactions, cell surface features, and tissue ultrastructure.
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The structures of a virus can be elucidated by using the high resolving power of scanning electron microscopy.
Electron Microscopy: What Does Coronavirus Look Like? Read Post »