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Verification of the non-thermal effects of THz-wave on human cells

To investigate the non-thermal effects of terahertz (THz) waves, weak 0.3- or 0.6-THz continuous-wave radiation was applied to human skin fibroblast cells using a uni-traveling-carrier photodiode. The effects of exposure to broadband THz pulses emitted from a photoconductive antenna were also examined. There were no changes in the metabolic activity or morphology of the exposed and sham-exposed cells.