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    Area of Science:

    • Physics
    • Biophysics
    • Engineering

    Background:

    • Recent outbreaks and pandemics highlight the critical need for effective viral inactivation methods.
    • Microwave irradiation is a promising technology for viral inactivation, but its mechanisms require further investigation.

    Purpose of the Study:

    • To develop a simple and effective modeling approach to investigate viral inactivation.
    • To explore viral inactivation mediated by microwave absorption through dipolar coupling.

    Main Methods:

    • A generalized Single-Degree-Of-Freedom (SDOF) model was developed, drawing from established dynamic analysis techniques.
    • The model is consistent with the dipolar resonance mode and utilizes Monte Carlo simulations.

    Main Results:

    • The model accurately reproduces key features of dipolar coupling with high computational efficiency.
    • It effectively mimics resonance range broadening due to heterogeneous virus size and accounts for water-induced damping.

    Conclusions:

    • Dipolar coupling shows significant potential for viral inactivation using GHz-range microwave irradiation.
    • The developed model can enhance the interpretation of experimental data and optimize viral inactivation protocols.
    • The versatile approach can be extended to more complex scenarios, including non-spherical geometries and heterogeneous material properties.