Lorentz microscopy sheds light on the role of dipolar interactions in magnetic hyperthermia

摘要: Monodispersed Fe3O4 nanoparticles with comparable size distributions have been synthesized by two different synthesis routes, co-precipitation and thermal decomposition. Thanks to the steric stabilizations, described samples can be considered as a model system investigate effects of magnetic dipolar interactions on aggregation states nanoparticles. Moreover, presence strongly affect nanoparticle efficiency hyperthermic mediator. In this paper, we present novel way visualize map in kinds aggregates use Lorentz microscopy, an easy reliable in-line electron holographic technique. By exploiting which is complementary measurements, it possible correlate interaction degrees their behaviors. particular, demonstrate that microscopy successful visualizing configurations stabilized interactions, thus paving comprehension power loss mechanisms for aggregates.