#1SCIENCE & SPACE
Top ↑Magnetorheological Fluid
ЁЯФ╣ Why in News & Recent Development
Scientists at the Indian Institute of Technology (IIT) Patna have developed an innovative hybrid magneto-rheometer designed to significantly advance basic research and practical engineering applications of magnetorheological (MR) fluids.
ЁЯФ╣ Key Properties and Composition of MR Fluids
Magnetorheological (MR) fluids are advanced smart materials consisting of magnetically active micro-sized iron particles suspended in a non-magnetic carrier liquid alongside specialized additives designed to mitigate particle sedimentation and agglomeration. When exposed to an external magnetic field, the fluid rapidly alters its rheological characteristics, experiencing a dramatic surge in apparent viscosity to transform into a viscoelastic solid within milliseconds.
ЁЯФ╣ Carrier Liquids and Engineering Applications
A wide variety of liquids serve as base mediums, including mineral oil, silicon oil, castor oil, soybean oil, and synthetic lubricants. Among these, silicone oil is preferred for vibration damping due to its superior viscosity index, low friction coefficient, high flash point, and elevated shear strength. Controlled dynamically via electromagnets, MR fluids are heavily utilized in adaptive shock absorbers, automotive clutches, structural dampers, seismic vibration control systems, and biomedical prosthetics.
ЁЯФ╣ UP PCS / STATE PCS HIGH-YIELD VALUE ADDITION
тАвтАв Nodal Ministry: Ministry of Science and Technology
тАвтАв Core Advantage: Operates on lower energy input while delivering higher yield stress compared to Electrorheological (ER) fluids
тАвтАв Developing Institution: Indian Institute of Technology (IIT) Patna, Bihar
тАвтАв UP PCS Focus: Smart materials, nanotechnology applications, and advanced physical sciences in GS Paper 3.