Research Article

Differences in Nanostructure and Hydrophobicity of Cicada (Cryptotympana atrata) Forewing Surface with the Distribution of Precipitation

Table 1

Collection locations, dates, contact angles, and nanostructure parameters of the cicada Cryptotympana atrata. The contact angle (CA), basal diameter (d), basal spacing (s), and height (h) values of protrusions are the average values and standard deviations across the forewing of a single specimen. The roughness factor () was calculated using (2), which is derived from the Wenzel model. The mark (—) indicates the collecting date of the sample is not recorded.

SpeciesLocationsDatesCAdsh
D.M.Y°nmnmnmnmnm

C. atrataHebei11 May 195996.1 (5.6)108 (5)83 (6)191375 (17)5.44
Fujian5 July 1955100.8 (10.3)104 (6)75 (7)179380 (27)5.93
Tianjin120.9 (11.0)111 (5)78 (4)189298 (13)4.70
Jiangsu24 July 1951124.1 (3.6)98 (4)85 (9)183335 (23)4.92
Beijing18 July 1964128.0 (1.9)80 (4)92 (6)172253 (14)3.74
Japan3 August 1932128.1 (6.4)103 (5)78 (6)181330 (21)5.15
Guangxi2 July 1985128.7 (4.5)115 (3)72 (6)187418 (30)6.50
Beijing West11 August 1951132.7 (4.0)95 (5)90 (8)185410 (49)5.55
Sichuan31 July 1989132.9 (3.2)115 (7)67 (4)182464 (30)7.44
Jiangxi14 July 1957133.3 (7.5)99 (7)79 (7)178393 (20)5.91
Zhejiang3 August 1961136.1 (4.3)130 (5)73 (3)203403 (24)6.09
Beijing North25 August 2010137.9 (1.9)85 (5)90 (8)175462 (34)6.13