The C20-O4-C24-C25

torsion angle is -140.412 (310) o, which suggests that the C24 configuration is R-form.

The relationship between

torsion angle [theta] and dynamic pressure with different torsional rigidity is plotted in Figure 9.

The twist rate is calculated by dividing the

torsion angle (expressed in radian) by the distance, L, between the fixed end and the rotation point (in our case, L = 0125 m).

The reason for the rareness of torsion test of microwire was the great challenge involved in the experiment, such as the alignment between the specimen and the rotation axis, the detection of

torsion angle, and the sensibility and calibration of torque meter.

where [[phi].sub.tip] is the

torsion angle at the wing tip and [[sigma].sub.max] is the maximum stress in the main beam, which is required to be no more than the structural strength limit.

The increase in length of this bond in adducts 7AlaB and 7AlaM leads to an increase in both the

torsion angle [theta] of the hydrogen bond donor and negative value of the dihedral angle [tau].

The sternal

torsion angle (STA) against the horizontal line was measured.

From [Figure 9], we could come to the conclusion that the line-plane angle (FA) is smaller than the plane-plane angle (

torsion angle, i.e., the angle measured by CT method).

We calculated the potential energy curves along the

torsion angle of the (R-pyrogallol)CH-(R-pyrogallol) bond of the dimeric precursors of 2,8,14,20-tetramethylpyrogallol[4]arene and 2,8,14,20-tetramethylpyrogallol[4] arene using density functional theory (Koch & Holthausen 2001, Peverati & Baldridge 2008).

Then, we concentrate on configuration of conical intersection at which the

torsion angle D1 (C11-C8-C1-C2) and dihedral angle D2 (H10-C8-C1-H9) are -146.6[degrees] and -60.0[degrees], respectively, as shown in Figure 1.

There is no change to the excellent data transfer rates even at a

torsion angle of 360 degree.

In the anti-torsion test, the sample was compressed axially with 50 N and fixed on the rotation experimental platform with the torque of 5 nm and the

torsion angle of samples was recorded.