Magnetic Nanoparticles | Image Resource : community.dur.ac.uk
Nano science is one amongst the vital research as well as development arena is the current era of modern science. The usage of nano particles has plenty of benefits because of its unique size as well as physical properties.
When we talk about the magnetic nano particles, it is pretty sure that the materail has huge applications in the fields like bio-medical engineering, environmental science, material science and bio-medical science. Before knowing about the applications, it is crucial to know about magnetic nanoparticles synthesis.
A new approach to magnetic nanoparticles synthesis
Magnetic effects in the magnetic nanoparticles are caused due to particle movements which have electric charges as well as mass. These magnetic nanoparticles have electrons, protons, holes as well as negative ions. The domain structure of the materials determines the magnetic property of the material.
Ferromagnetic materials are categorized into sub categories known as domains. In the case of an, unmagnetized sample the domain moments are oriented randomly, but they easily align themselves to whichever the direction magnetic field is applied. When the particles approach a minimum critical size, i.e. in the nano scale range, formation of the domain walls becomes unfavorable.
At times, changes in the process of magnetization usually occur through the spins rotations, rather going through the domain walls. These magnetic nanoparticles properties are widely called as single domain. If the size of the particle is decreased further, then the spins are affected by the thermal fluctuations, and thus the particles become superparamagnetic.
This superparamagnetic property is highly useful, if the individual particles become magnetized when it is exposed to the external magnetic field; but doesn’t exhibit permanent magnetization even when the electric field is removed. Additionally, particle size provides larger surface area as well.
Potential applications of magnetic nanoparticles in medical field
Magnetic nanoparticles are widely used in the medical applications. During initial phases, medical applications used iron powder else indirectly magnetite for treatments. In this form, the particles are easily recognized through macrophages of the system and it is eliminated from the body.
To enhance the biocompatibility of the body, to reduce toxic content from body and also to ensure non-immunogenicity particles have been encapsulated in the stealth particles. Super magnetic nanoparticles are widely used in the MRI scanning as a contrast agent in the diagnostics applications.
Another major application of magnetic nanoparticles done in hyperthermia; this process involves heating the organs or the tissues between 41c to 46c to get rid of tumor cells. You can find numbers of dealers online, before finalizing the seller its better suggested crosschecking the current market price; this can help your finding the best quality and service provider. So, that’s all about magnetic nanoparticles synthesis and their applications.