Ali Rostami, Ahmad Salmanogli, Farshad Farhadnia, Mahbobeh Dolatyari and Ghassem Rostami
In this study, a portable nanosensor for early and easily detection of carcinoma tumor was designed and simulated. The nanosensor consisted of deposited nanoparticles with a regular distance from each other. It has highly sensitivity to the alteration of electromagnetic fields, which are scattered from different tissues (normal and tumor). With respect to the fact that normal tissue permittivity differs from the permittivity of tumors, the interaction of electromagnetic wave with them lead to different results in the case of electrical field and its gradient profile. It means that the non-uniformity will be occurred and this case is a meaningful signal for detection. Nevertheless, it is obvious that, due to tissue absorption coefficient, scattered photons will be very negligible; and a small fraction of the photons reach to the detector. Hence, in this paper, a sensor based on nanoparticles is proposed, which has enough sensitivity to pick up scattered photons, amplify, and detect them. It should be noted that, the roles of the nanosensor between body surface and detector are the signal amplification and sampling via nanoparticle plasmonic effect. It means that the designed nanoparticles sample the scattered waves and amplify them in the near-field. At last, our design and simulation results show that the digitized signals could be easily and clearly detected by force or temperature detectors. So, the easy breast tomography will be carried out with no need to clinics and its equipment.
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