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Why ESR is also known as EPR?

Jun 05 , 2024

ESR (Electron Spin Resonance) and EPR (Electron Paramagnetic Resonance) are used interchangeably to describe the same spectroscopic technique. The reason for the two different names can be traced to the historical development of the field and some of the interesting stories surrounding it. Originally, the technique was called ESR, or electron spin resonance. It was discovered in the mid-20t...

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What is the principle of SEM?

Jun 17 , 2024

Scanning Electron Microscopy (SEM) is based on the principle of using a focused beam of high-energy electrons to probe the surface of a sample and produce a high-resolution detailed image. Electron Source: SEM works by using an electron source, typically a heated tungsten filament or a field emission gun, to produce a beam of electrons. Electron Beam Generation: The electron source e...

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Continuous Wave and Pulse EPR Spectroscopy

Jun 26 , 2024

EPR (Electron Paramagnetic Resonance) Spectroscopy, also known as Electron Spin Resonance (ESR) Spectroscopy, is a technique used to study the electronic structure of paramagnetic species. There are two main types of EPR spectroscopy: Continuous Wave (CW) EPR spectroscopy and Pulsed EPR spectroscopy. Continuous wave (CW) EPR Spectroscopy: In continuous wave EPR spectroscopy, a microw...

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Why is EPR more sensitive than NMR?

Jul 08 , 2024

The sensitivity of a spectroscopic technique refers to its ability to detect and analyze signals from a sample. In the case of electron paramagnetic resonance (EPR or ESR) and nuclear magnetic resonance (NMR), EPR is generally considered to be more sensitive than NMR for several reasons: 1. Detection principle EPR detects signals from unpaired electrons, while NMR detects signals from the n...

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SEM Microscopes Companies in the Middle East

Jul 19 , 2024

The scanning electron microscope (SEM) is an advanced scientific instrument to image and analyze high-resolution samples. Several countries in the Middle East have well-established scientific research institutes and universities, with Saudi Arabia, the United Arab Emirates (UAE), Turkey, Egypt, and Iraq investing heavily in scientific research and development, including scanning electron microscop...

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SEM vs TEM: Unveiling the Microscopic World

Jul 22 , 2024

In microscopic imaging, two dominant techniques have revolutionized our understanding of the complexity of the nanoworld: scanning electron microscopy (SEM) and transmission electron microscopy (TEM). These powerful tools have opened up new avenues for a variety of scientific disciplines, allowing researchers to delve into the composition, structure, and behavior of a wide range of materials. We c...

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The Significance of g Value in EPR Spectroscopy

Jul 30 , 2024

Electron paramagnetic resonance (EPR) spectroscopy is a powerful experimental technique for studying paramagnetic species' electronic structure and properties. In EPR spectroscopy, the g-value plays a crucial role in understanding the behavior and environment of unpaired electrons in paramagnetic systems. This article aims to provide an overview of g-values and their significance in EPR spectrosco...

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What is SEM EDS EDX?

Aug 15 , 2024

Scanning Electron Microscopy (SEM) is a microscopy technique that uses a focused electron beam to create detailed images of the surface of a sample. The electron beam scans the sample in a raster pattern, and the resulting signals generated by interactions between the electron beam and the sample's surface are detected and used to form an image. SEM provides high-resolution three-dimensional surfa...

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