CME/CPD ACCREDITED 12TH EMIRATES PATHOLOGY & DIGITAL PATHOLOGY CONFERENCE | December 21-23, 2022 | DUBAI, UAE
Track:16 Electron Microscopy

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SUB TRACK Electron microscope, tissues, cells, scanning electron microscope, transmission electron microscope, immuno-labeling, Biological, electronic Device, magnified image, biomedical research, organelles, macromolecular, sectioning, immuno-labeling, negative staining, cell disease.  X-rays, immuno-labels, topography, tissue sections, molecules,

Biological and non-biological specimens can be imaged in great resolution using electron microscopy (EM). The intricate structure of tissues, cells, organelles, and macromolecular complexes is examined using it in biomedical research. Electrons, which have extremely short wavelengths, are used as the source of illumination in EM pictures, giving them their great resolution. For example, thin sectioning, immuno-labeling, and negative staining are some of the supplementary techniques that are utilised with electron microscopy to address certain research concerns. On the structural underpinnings of cell activity and illness, EM pictures offer crucial information.

Types of Electron Microscopes

The transmission electron microscope (TEM), scanning electron microscope (SEM), and reflection electron microscope are only a few examples of the various types of electron microscopes (REM.) In this article, each of these varieties of the electron microscope will be discussed in more detail, along with each one’s merits and drawbacks.

Transmission electron microscope (TEM)

The first type of electron microscope, known as a transmission electron microscope, uses a high voltage electron beam to illuminate the material and produce a magnified image of it.

The electron beam is created by an electron gun. The electron beam’s source, a tungsten filament cathode, is often mounted on the gun. The electron beam is focused with the use of electrostatic and electromagnetic lenses and is accelerated by an anode.

The image of the specimen’s microscopic structure created by the electron beam’s scattering as it travels through the sample may be seen through the microscope’s objective lens.

By projecting the image onto a fluorescent zinc sulfide-coated screen, the spatial variation can be investigated. Placing a photographic film into an electron beam to capture the image is yet another way to capture the image. The image can also be shown on a computer screen in real time using a digital camera.

Historically, transmission electron microscope resolution has been constrained by spherical aberration. However, recent advancements have made it possible to get around this problem and boost resolution via hardware spherical aberration correction. As a result, it is now possible to create images with resolutions lower than 0.5 angstroms and magnifications greater than 50 million times.

Scanning electron microscope (SEM)

Raster scanning was a method used by the scanning electron microscope to create enlarged images of the specimen. It focuses an electron beam, which loses energy as it passes through the specimen’s rectangular area. Other types of energy, including heat, light, secondary electrons, and backscattered electrons, are created from the energy. The geography and composition of the original specimen can be seen by translating this data.

Scanner electron microscopes often have lower resolution than a transmission electron microscope.

However, it is advantageous because it makes use of surface processes, which enables it to produce images of huge samples with a wider depth of field and a maximum size of several centimetres. As a result, the images produced by a SEM may be accurate depictions of the specimen’s true shape.

Reflection electron microscope (REM)
A beam of elastically dispersed electrons that is reflected off of the item under examination is detected using a reflection electron microscope. This kind of microscopy frequently employs the reflection high-energy electron diffraction (RHEED) and reflection high-energy loss spectroscopy (RHELS) techniques.

Electron Microscopy University The Ultramicroscopy Research Center, Kyushu University, Centre for Electron Microscopy – University of Birmingham, Electron microscopy facilities University of Manchester, Electron Microscopy – The University of Edinburgh, Electron Microscopy Center – University of Kentucky, the Electron Microscopy Resource Center, Electron Microscopy University of Helsinki, Electron Microscopy Suite – The University of Nottingham, UOW Electron Microscopy Centre – University of Wollongong, Electron Microscopy Facility – Clemson University,

Electron Microscopy Society Microscopy Society of America, European Microscopy Society, The Japanese Society of Microscopy, Microscopy Societies – ASEM, Royal Microscopical Society, Electron Microscope Society of India: EMSI, The Society of Electron Microscope Technology , Nordic Microscopy Society, Chinese Electron Microscopy Society, Microscopy Societies,

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