1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

nano_tube_cap2

nano_tube_cap

nano_tube_caps_sphere

spherical_nano_tubes2

spherical_nano_tubes

torus2

torus3