Ultrasonic Characterization of Silver Nano Fluid

2nd International Conference on Materials Science and Technology

Nanda, A.^1 ; Tiadi, A.^1 ; Mallik, S.K.^1 ; Giri, R.^1 ; Nath, G.^1

Department of Physics, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha

768 018, India^1

关键词: Acoustic parameters;    Adiabatic compressibility;    Anti-microbial properties;    Chemical and physical properties;    Chemical reduction methods;    Metal oxide nanoparticles;    Nanofluids;    Ultrasonic characterization;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/360/1/012064/pdf
DOI  :  10.1088/1757-899X/360/1/012064

来源: IOP

【 摘 要 】

Nano fluids are stable suspensions of nano particles in a liquid. Metal oxide nanoparticles offer great merits over controlling rheological, thermal, chemical and physical properties of solutions. The effectiveness of a nanoparticle to modify the properties of a fluid depends on its diffusive properties with respect to the fluid. An important application of Nano fluids containing nano particles is as a coolant, since the addition of only a few volume percent of nano particles to a liquid coolant and significantly improves its thermal conductivity. A heat exchange device using nanofluid needs to operate at best nanoparticle loading to get the maximum heat transfer performance. Due to its antimicrobial properties, the future therapeutic directions may include nano-silver as an anti-inflammatory and as anti-platelet agents and antiviral drugs. Owing to the applications of nano silver particles, attempts has been made in the present study to synthesis silver nano particles and characterized with the help of ultrasonic technique. Different acoustic properties of AgNO3 nanofluids are studied with the help of Ultrasonic technique. Silver nanofluids are synthesized by chemical reduction method. The chemical reduction method involves the reduction of AgNO3 in aqueous solution by a reducing agent in the presence of a suitable stabilizer, which is necessary in protecting the growth of silver particles from aggregation. Ultrasonic velocity and density values are measured for different concentrations of AgNO3 nanofluids. The acoustic parameters like adiabatic compressibility, intermolecular free length, and acoustic impedance are calculated from the experimental data. The variation of ultrasonic velocity and other parameters with particle concentration are discussed on the basis of interaction of ultrasonic wave with the nano sized silver particles.