Labyrinthine Structure with Subwavelength and Broadband Sound Insulation

Figure 1

Labyrinthine structure units. (a) Four-times-folded labyrinthine structure unit. (b) Six-times-folded labyrinthine structure unit. (c) Eight-times-folded labyrinthine structure unit. (d) Six-times-folded labyrinthine structural unit with sound channel width of 2 mm. (e) Six-times-folded labyrinthine structural unit with sound channel width of 4 mm. (f) Six-times-folded labyrinthine structural unit with sound channel width of 5 mm.

(a)

(b)

(c)

(d)

(e)

(f)