Figure 5
From: Simultaneous realization of slow and fast acoustic waves using a fractal structure of Koch curve
Theoretical transmissions and phase times in a three-ordered QKCM. Theoretical transmissions and phase times in the vicinities of (a) 243 Hz, (b) 573 Hz, (c) 425 Hz and (d) 515 Hz obtained in a metamaterial with the shape resembling a three-order Koch curve, in which the side length of the largest triangle is 120 cm.
