To explain how strain gradients are transferred from the macroscopic device to the microscopic oxide particulates, we developed a model based on Euler-Bernoulli beam theory. The model treats the oxide particles as stiff plates/beams with an external parabolic force exerted by the surrounding medium through macroscopic bending. For visualizations, see Section 8 in the SI and for model details, see SI section 2. Our model shows that the magnitude of deflection is proportional to the in-plane particle length squared and inversely proportional to the cube of the particle thickness (Figure ). The magnitude of the bending mode strain gradient also shares the same proportionality relationship (see Figure ). In contrast, the shearing force is predicted to be independent of thickness (see Figure ). Furthermore, under the assumptions of the model, there are positive and negative shear gradients that exactly cancel out. This indicates that beyond the differences in the flexoelectric properties of the exfoliated and powdered Mn3O4 as determined by first-principles calculations, the enhanced effective flexoelectric response in our exfoliated oxide nanogenerators is also a result of dimensional reduction allowing for improved microscopic response to macroscopic strain gradients. To put it more concretely, we can predict the flexoelectric response of the exfoliated and powder Mn3O4 using this model and representative length scales from our experiments. Assuming a length and thickness of 25 nm and 6 nm for the exfoliated samples and a cube of size 300 nm, our model predicts an increase in response between the bulk and exfoliated oxides of almost three orders of magnitude. Such a dramatic increase is not observed, partially because the model is not well suited for cuboid particles, but the general trend with size is valid.