“…This is often simply referred to as Lamb’s theory or equation, and only requires the radius of the sphere, as well as its longitudinal and transverse sound velocities, as input ( Appendix A ). Recent studies have investigated microwave resonant absorption as a mechanism for inactivating spherical viruses [ 3 , 4 , 5 , 6 , 7 , 8 ]. These studies propose that virus inactivation results from a structural-resonant energy transfer (SRET) process, where electromagnetic fields matching the frequency of the dipolar mode of a virus capsid excite a confined acoustic vibration which damages its structure [ 9 ].…”