Scanning electron microscopes (SEMs) are highly advanced and sophisticated scientific instruments that provide high-resolution imaging and analysis of samples at the nanoscale level. There are several renowned scanning electron microscope brands available in Europe that offer state-of-the-art SEMs. Here are a few notable brands: FEI Company (Thermo Fisher Scientific): FEI Company is a leadi...
Electron paramagnetic resonance (EPR) spectroscopy is a powerful technique used to study the electronic structure of paramagnetic substances. It provides valuable insights into the nature and interactions of unpaired electrons in magnetic fields. Selection rules in EPR spectroscopy establish conditions that allow or prohibit leaps between different energy levels. Understanding these selection rule...
The g-value plays a crucial role in EPR (Electron Paramagnetic Resonance) spectroscopy in understanding the electronic structure and magnetic properties of paramagnetic substances. Today, we will talk about the key factor in EPR spectroscopy: the g-value (g-factor). The g-value is a dimensionless quantity that represents a constant of proportionality between the magnetic field and the energ...
Electron paramagnetic resonance (EPR), also known as electron spin resonance (ESR), is a technique used to study the magnetic properties of materials containing unpaired electrons. Here is a brief explanation of how electron paramagnetic resonance works: Unpaired electrons: Many materials, such as transition metal ions or organic radicals, possess unpaired electrons. These unpaired e...
In the field of analytical instrumentation, both Electron Spin Resonance (ESR) spectrometers and Nuclear Magnetic Resonance (NMR) spectrometers play an important role. Although they use similar principles, there are significant differences between the two techniques. ESR Spectrometer: Electron Spin Resonance (ESR) spectrometers are employed to study the behavior of unpaired electrons within...
What are free radicals? Free radicals are highly reactive molecules or atoms that play a crucial role in various chemical and biological processes. Understanding their behavior and detecting their presence is essential to studying their involvement with disease progression, environmental pollution, and other biological and chemical systems. Image via the Internet Principles of EPR Spectrosc...
In today's world of rapidly advancing technology, scientific breakthroughs rely heavily on our ability to visualize and understand materials at the smallest scales. One such tool of considerable importance is the field emission scanning electron microscope (FE SEM), and the CIQTEK SEM5000 stands out for its superior imaging capabilities and versatility. In this blog post, we will delve into the fa...