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Volumn 274, Issue 5295, 1996, Pages 2041-2044

Probing collective motions of terminally anchored polymers

Author keywords

[No Author keywords available]

Indexed keywords

POLYMER;

EID: 0030476761     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5295.2041     Document Type: Article
Times cited : (111)

References (32)
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  • 8
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    • A neutron spin-echo study [B. Farago et al., Phys. Rev, Lett. 71, 1015 (1993)] dealt with the dynamics of density fluctuations of the corona polyisoprene chains in spherical micelles formed by the aggregation of poly(styrene-b-isoprene) diblock copolymers in a selective solvent.
    • (1993) Phys. Rev, Lett. , vol.71 , pp. 1015
    • Farago, B.1
  • 15
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    • N. Boudenne et al., Phys. Rev. Lett. 77, 506 (1996); T. Jian et al., Macromolecules 27, 4762 (1994).
    • (1996) Phys. Rev. Lett. , vol.77 , pp. 506
    • Boudenne, N.1
  • 16
    • 0028484311 scopus 로고
    • N. Boudenne et al., Phys. Rev. Lett. 77, 506 (1996); T. Jian et al., Macromolecules 27, 4762 (1994).
    • (1994) Macromolecules , vol.27 , pp. 4762
    • Jian, T.1
  • 18
    • 0000792931 scopus 로고
    • Few attempts to measure dynamic properties of strong scatterers (such as colloidal particles) close to a wall by EWDLS have been reported [(15); see also C. S. Park, M. Copic, R. Mahmood, N. A. Clark, Liq. Cryst. 16, 135 (1995); A. H. Marcus, B. Uu, S. A. Rice, Phys. Rev. E 53, 1965 (1996)]. For weak scattering, however, careful optical alignment to minimize parasitic scattering and control experiments to ensure homodyne detection for both static and dynamic measurements are crucial for the quality of the experimental functions and the technical validity of the data.
    • (1995) Liq. Cryst. , vol.16 , pp. 135
    • Park, C.S.1    Copic, M.2    Mahmood, R.3    Clark, N.A.4
  • 19
    • 4043105384 scopus 로고    scopus 로고
    • Few attempts to measure dynamic properties of strong scatterers (such as colloidal particles) close to a wall by EWDLS have been reported [(15); see also C. S. Park, M. Copic, R. Mahmood, N. A. Clark, Liq. Cryst. 16, 135 (1995); A. H. Marcus, B. Uu, S. A. Rice, Phys. Rev. E 53, 1965 (1996)]. For weak scattering, however, careful optical alignment to minimize parasitic scattering and control experiments to ensure homodyne detection for both static and dynamic measurements are crucial for the quality of the experimental functions and the technical validity of the data.
    • (1996) Phys. Rev. E , vol.53 , pp. 1965
    • Marcus, A.H.1    Uu, B.2    Rice, S.A.3
  • 20
    • 85033166823 scopus 로고    scopus 로고
    • note
    • A PS/toluene solution displays about four times less scattering than an equivalent PS/dioxane solution because of the difference in the refractive index increment.
  • 21
    • 85033163585 scopus 로고    scopus 로고
    • note
    • -1 at 23°C, respectively.
  • 22
    • 85033176896 scopus 로고    scopus 로고
    • note
    • -1, respectively). For the shortest PEO-PS/80 layer, C(q, f ) at high q's shows an additional faster process that, in contrast to the layer relaxation, is diffusive. Hence, the two processes tend to merge at low q's (see Flg. 3); this, in addition to the decreasing intensity of the layer relaxation with decreasing q (insets of Fig. 2, B and C), renders the analysis of C(q, t ) at low q's ambiguous.
  • 30
    • 85033173031 scopus 로고    scopus 로고
    • note
    • q are, respectively, the concentration and layer height fluctuations.
  • 32
    • 85033166007 scopus 로고    scopus 로고
    • note
    • We thank G. Petekidis for his assistance and constructive comments, A. N. Semenov for critically reading the manuscript, and M. Stamm for stimulating discussions. Part of this research was sponsored by the European Union (International Scientific Cooperation, contract ISC*CT93-0951) and by NATO's Scientific Affairs Division (Science for Stability Programme). B.F. acknowledges the support of an NSF/ NATO postdoctoral fellowship.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.