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Theoretical Comparison of Translational and Rotational Motions of Nanoparticles in Cell Membrane and Consideration for Medical Applications

The interaction between nanoparticles and biological cells under physical excitation is investigated theoretically. Our research aim is to thoroughly utilize a series of physical stimuli on a target cells (malignant cells or bacteria) in various medical applications. In this study, we focused on a theoretical comparison of the translational and rotational motions of nanoparticles in the cell membrane in terms of energy dissipation. The theoretical analysis suggested that rotational motion is more efficient than translational motion for providing frictional heat to the cells. The promising applications of rotational nanoparticles include their use as physical antibiotics and artificial immune system components for the selective destruction of bacteria and malignant cells.