Abstract
A fundamental interest has been developed in the twenty-first century toward the significance of nanoparticles due to decisive applications in various thermophysical systems and improved sustainability. Keeping such developments in mind, the present contribution aims to investigate the bioconvection of nanoparticles in flow of generalized micropolar fluid toward an accelerated stretched surface. The activation energy consequences are also encountered in the concentration equations to enhance the mass diffusion phenomenon. Unlike previous investigations, rheological aspects on non-Newtonian materials are signified by involving viscoelastic micropolar which captures the second-grade fluid, micropolar fluid and viscous case simultaneously. The governing equations are rendered in non-dimensional forms by reducing number of independent variables which are further solved analytically by using homotopy analysis technique. The graphical inspection of involved flow parameters is carried out for velocity, temperature, concentration and motile microorganism's density distributions. It is observed that micro-rotation velocity decreases by increasing buoyancy ratio constraint. Further, motile organism profile declines with an increment in temperature difference parameter and Peclet number.