Dhananjoy Mondal

Piezoelectric energy generation using finger tapping and non-invasive water flow as mechanical stimuli by a Gd³⁺-doped natural hematite rock-based flexible free-standing PVDF membrane.

Iron oxide is a chemical compound of iron and oxygen having different polymorphs including Fe2O3, Fe3O4, and FeO. Among them, most studies were carried out on Fe2O3 and Fe3O4, as they possess extraordinary properties at the nanoscale. The Fe2O3 also has different forms i.e ferrimagnetic γ-Fe2O3 (maghemite), weak-ferromagnetic and hard-magnetic ε-Fe2O3. In this short review, we have dealt with the α- Fe2O3 (hematite) nanoparticles and their biomedical aspects. The high aspect ratio of the particles in the nano-domain enhances its optical, electrical, and magnetic properties. Therefore, in the nano regime, these materials become favorable for various applications such as drug delivery, separation, magnetic hyperthermia, magnetic sorting, sensing, etc. In this report, numerous synthesis protocols (both chemical and physical) of the hematite have been discussed with their potential application in biomedical fields.

This work demonstrates different stimulus-based antibacterial treatment strategies for both resistant bacteria and biofilms. Moreover, a future perspective has been illustrated for making these modalities clinically feasible.