Soft x-ray diffraction of striated muscle
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
Rheological and rheooptical properties of poly(di-n-hexylsilane) were investigated in oscillatory and steady-shearing experiments. The samples consisted of concentrated solutions up to 6 wt% of a very high molecular weight polymer (Mw = 4.6 × 106) dissolved in decalin. Experiments showed that the flowinduced shear and normal stresses were linearly related to the birefringence and that the constant of proportionality-the stress-optical coefficient-was larger than that of typical polymers. The enhanced stress-optical coefficient is a result of both the intrinsic rigidity of the polysilane chain and the higher polarizability of the σ-conjugated electrons. This result is similar to that found recently for a π-conjugated polymer. Additional results on the concentration dependence of various rheological properties are reported. © 1991, American Chemical Society. All rights reserved.
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
T.N. Morgan
Semiconductor Science and Technology
J.A. Barker, D. Henderson, et al.
Molecular Physics
I.K. Pour, D.J. Krajnovich, et al.
SPIE Optical Materials for High Average Power Lasers 1992