Table 1.

Measurement of rolling speed of water droplet from horizontal PTFE surface treated at different beam energy and time duration.

Sr. No	Beam Energy (eV)	Treatment time (s)	Rolling or not	Rolling speed (mm/s)
1	300	30–540	No	—
2		600	Yes	19.1 ± 3.5
3	400	30–120	No	—
4		180	Yes	20.2 ± 2.4
5	500	30–120	No	—
6		180	Yes	20.4 ± 1.7
7	600	30–120	No	—
8		180	Yes	26.5 ± 1.4
9	800	30–120	No	—
10		180	Yes	31.2 ± 3.1
11	1000	30	No	—
12		60	Yes	30.7 ± 1.8