Executive Summary : | Smart materials, such as magneto-responsive materials, are those that rapidly change their properties when a magnetic field is applied. These materials are used in various fields, including electronics, automotive, tribology, robotics, earthquake-resistant absorbers, and minimally invasive surgery. Magnetic particles, ranging from 1-6 micrometers in size, are added to the elastomer matrix or carrier fluid, aligning themselves when the magnetic field is applied, causing the material properties to change rapidly. Various ferromagnetic particles are used as fillers to enhance the MR effect. However, recent advances in magneto-rheological materials still suffer from sedimentation, agglomeration, phase separation, thermal stability, longer vulcanization time, durability, and lower load capability. To address these shortcomings, researchers propose synthesizing different magnetic nanoparticles, such as Fe, Ni, and Cu metal oxides, attached to Carbon Nanofibers using the CVD method. This type of magnetic nanoparticle overcomes these shortcomings and affects the material properties when an external magnetic field is applied. The researchers also propose working on a eutectic mixture of liquid metals, such as EGaIn, to prepare new Magnetic Rheological Elastomers (PDMS), gels, and fluids using both small amplitude oscillatory tests (SAOS) and Large amplitude oscillatory tests (LAOS) in rheology. This study will help understand the material properties under large deformation, which is essential for applications in soft robotics and viscoelastic properties of MR materials. This will ultimately lead to manipulation of material properties for various applications. |