Design & Analysis of a Terahertz Power Source for a Non-invasive, Non-ionizing Imaging of Full Body Prosthetics: A Novel Technique

Abstract

The authors have designed and studied the superlattice terahertz device for accurate detection of cancer cell in a Full Body Prosthetic (FBP). For this a generalized non-linear simulator is developed. The model predicts that identification of cancerous cell within FBP could be done satisfactorily by analyzing corresponding thermographs. For T-Ray source and detector the authors have considered p++ -n- - n - n++ type Mixed Tunneling Avalanche Transit Time (MITATT) Device at 0.1 THz. The study reveals that the proposed device is capable of developing 10 W level of fundamental harmonic power at around 100 GHz. The simulator incorporates the physical and electrical properties of GaN/AlN supperlatice, which include temperature and field dependent carrier ionization rates, saturation velocity of charge carriers, mobility, inter-sub band tunneling and drift velocity overshoot effects as well as hot carrier effects inter-band scattering of electron hole pairs in superlattice region. An equivalent circuit model is developed and analyzed for obtaining impedance and admittance characteristics. To the best of authors’ knowledge this is the first report on large signal modeling of THz Solid State imaging unit for thermo graphic analysis of malignant tumors in Full Body Prosthetics (FBP).