Extended Data Fig. 8: The washability of the acoustic fabric.
From: Single fibre enables acoustic fabrics via nanometre-scale vibrations
a, Snapshot photographs of the acoustic fabric being washed in a washing machine at room temperature. b, The constant capacitance with washing cycles (left); and the voltage versus frequency of the acoustic fabric before it is washed and after it is washed for ten cycles (right). Note that the cotton yarns in this fabric are grey, whereas the cotton yarns shown in Fig. 4 are green. The warp cotton yarn is a size 20/2 cotton with a set of 60 ends per inch and was threaded through a 12-dent reed. The weft yarn is a 1,210-dtex Twaron yarn (Tejin Aramid, The Netherlands). Four strands of Twaron yarn (strands were not twisted together) were used in the weft direction. The size of the fabric is 17 cm × 17 cm × 1 mm. The compression force the warp yarns applied to the fibre was measured to be 16.9 g using a force sensor (ZC-RP-C5ST-LF5-1024, Taidacent).
