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Magnetic Characterization
The Magnetic Properties of materials are mainly due to the magnetic moments of their atoms orbiting electrons. The ability of a material to be magnetized is characterized by the magnetic permeability, which is determined from magnetization curves.
Porous Structures
Porous Structures are developed by introducing particles or bubbles when the scaffold is solidified, which are later removed leaving behind an interconnected network of pores.
The most common characteristics of porous nanofibrous membranes are average pore size or pore size distribution, porosity, and specific surface area.
Scanning Electron Microscope
A Scanning Electron Microscope is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample.

Porosimetry
Porosimetry is an analytical technique used to determine various quantifiable aspects of a material's porous structure, such as pore diameter, total pore volume, surface area, and bulk and absolute densities.
Mercury Intrusion Porosimetry
Mercury Intrusion Porosimetry (MIP) is a powerful technique utilized for the evaluation of porosity, pore size distribution, and pore volume to characterize a wide variety of solid and powder materials.
The instrument, known as a Porosimeter, employs a pressurized chamber to force mercury to intrude into the voids in a porous substrate.
As pressure is applied, mercury fills the larger pores first. As pressure increases, the filling proceeds to smaller and smaller pores.
Both the inter-particle pores and the intra-particle pores can be characterized using this technique.