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...
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...
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...
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...
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...
Electron paramagnetic resonance (EPR), also known as electron spin resonance (ESR), is a sophisticated spectroscopic technique used to probe paramagnetic materials' electronic and magnetic properties. In this blog, we will explore the concepts, fundamentals, and applications of EPR. What is Electron Paramagnetic Resonance: Electron paramagnetic resonance focuses on the behavior of unp...