Joshi, Deepika P.Pandey, Mahesh Chandra2021-12-222021-12-222021-11https://krishikosh.egranth.ac.in/handle/1/5810179712Present thesis is an effort to develop equations of state for the study of size and pressure dependent thermophysical properties of nanomaterials; such as bulk modulus, relative volume compression, melting temperature and Debye temperature .The proposed modified equations have been applied to study the thermophysical properties of Al (37nm), Bi (50 nm), Pb (6.7 nm), Cu (20 nm), In (20 nm), Ag (20 nm), Au (20 nm), Ni (20 nm), Sn (20 nm) nanometals. Study shows that the bulk modulus (B) of nanomaterials decreases with decreasing size but increases with increasing pressure. In the light of bulk modulus relative volume compression has been obtained. The relative volume change (V/V0) decreases with increasing pressure. The melting temperature is obtained with the help of Grüneisen parameter. The Grüneisen parameter shows decrement with the size decrement of nanoparticles, hence the melting temperature decreases with decreasing size. Present study reveals that the melting temperature shows superheating phenomenon under pressure and the similar increasing trend is shown by the Debye temperature as well. The obtained results show a very close agreement with the available experimental data, which supports the validity of the present work. So, the proposed equations of states can be helpful to study the thermophysical properties of nanomaterials under pressure.EnglishThesis