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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...
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...
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...
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...
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...
Electron paramagnetic resonance (EPR), or electron spin resonance (ESR), is a powerful spectroscopic technique used to study the properties of materials with unpaired electrons. To perform EPR experiments, it is crucial to prepare high-quality EPR samples. In this blog post, we will describe step-by-step how to prepare EPR samples. >> Materials: - Sample matrix: This can be a solid sa...
Microscopy has revolutionized our understanding of the microscopic world, enabling scientists to reveal complex structures and study materials at the nanoscale. Among the various powerful microscopes, the scanning electron microscope (SEM) is an indispensable tool for imaging surfaces with extraordinary detail and resolution. In this blog post, we will look in-depth at different types of scanning ...