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Gold nanoparticles associated with DNA, RNA, proteins, oligonucleotides, and peptides are useful in therapies and drug delivery. The present article mainatins that gold nanoparticles play a tremendous role in remedying cancer and fatal diseases. A mathematical model is proposed for the two-dimensional motion of the couple stress nanofluid consisting of gold nanoparticles under the application of peristaltic propulsion and electroosmosis mechanisms in an asymmetric microchannel. The effects of radiation with slip boundary have been employed. The governing equations are simplified under the assumptions of low Reynolds number and long wavelength and the Poisson-Boltzmann equation is solved under Debye-Hückel linearization. Analytical solutions for the velocity of fluid motion, nanoparticle temperature, stream function, pressure gradient, are evaluated and analyzed graphically under the effects of various physical parameters. It is notable from the analysis that raising the Brinkman number boosts the nanoparticle temperature and heat transfer coefficient which validate the physical model and analysis. Moreover, it is noticed that sphere-shaped gold

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The importance of gold and silver nanoparticles in the blood flow has immense applications in biomedicine for the treatment of cancer disease and wound treatment due to their large atomic number and antimicrobial property. The current study deals with the magnetohydrodynamic and electroosmotic radiative peristaltic Jeffrey nanofluid (blood-silver/gold) flow with the effect of slip and convective boundary conditions in the nonsymmetric vertical channel. The nondimensional governing equations have been solved analytically and the exact solutions have been presented for velocity, temperature, shear stress, trapping, entropy generation, pressure gradient and heat transfer coefficient. The pictorial representations have been prepared for the flow quantities with respect to fluid flow parameters of interest. It is noticed from the current study that the gold-based nanofluids exhibit higher velocity than silver-based nanofluids. Enhancement of thermal radiation decreases the total entropy generation. The size of the tapered bolus decreases with the enhancement of magnetic field strength. The present model is applicable in designing pharmacodynamic pumps and drug delivery systems.

Electroosmotic flow through the biomechanical devices is efficient in targeting drug delivery of the human body parts related to the digestive and renal systems. In view of this, the present work is focused on the mathematical modeling of electroosmotic nanofluid transport driven by peristalsis. The impacts of magnetohydrodynamics, viscous dissipation, and thermal radiation on the intended stream have been considered. The resulting system of equations has been simplified with the lubrication approach and obtained the exact solutions for temperature, shear stress, velocity, trapping, and entropy generation. The impact of distinct physical parameters on nanofluid flow is graphically computed. It can be seen from the present study that the stronger electric field accelerates the entropy generation near the channel walls. A higher temperature is observed for blade nanoparticles presented in the base fluid. The stronger magnetic field reduces the size of the bolus. The higher velocities are noticed for the blood-platinum-based nanofluid as compared with blood-copper-based nanofluid.