nMie

nMie is a computational model used to calculate the scattering of electromagnetic radiation by spherical particles in suspensions or colloidal solutions. It is an extension of the Mie theory, which was originally developed by Gustav Mie to study the scattering of light by spheres.

The nMie model takes into account the non-spherical shape of particles that are not truly spherical. This is often the case in real-world applications, where particles may be irregularly shaped or have anisotropic optical properties. By including the effects of particle shape and orientation on scattering, nMie provides a more accurate description of light scattering and absorption by colloidal particles.

The nMie model is formulated in terms of the scattering T matrix, which describes the interactions between the electromagnetic radiation and the particle. This T matrix is calculated based on the particle's shape, size, and material properties. The model can be used to study a wide range of phenomena, including the scattering spectra of colloids, the optical properties of nanoparticles, and the interactions between particles in concentrated suspensions.

nMie has been widely used in various fields, such as optics, materials science, and biophysics. Its applications include the characterization of nanoparticles in optical and biomedical research, the modeling of pigment dispersion and color stability in paints, and the study of the optical properties of biological systems. The nMie model has also been extended to other spherical and non-spherical geometries, making it a versatile tool for describing the optical behavior of particles in many different contexts.