Semiflexible polymer network: A view from inside

被引：73

作者：

Caspi, A ^{[1
]}

Elbaum, M ^{[1
]}

Granek, R ^{[1
]}

Lachish, A ^{[1
]}

Zbaida, D ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.80.1106

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of a polymer network are studied by direct view observation of the motion of a single point within a single polymer. laking advantage of rather rigid biological microtubules as a case study, we expand the space and rime scales of the system to those accessible bs optical microscopy and standard video tools. Tracking is achieved by chemically attacking an optically resolved microsphere to a single point on the filament. We study the time dynamics of this point, without spatial averaging inherent in scattering methods. It is shown that the mean square displacement of the individual point is sensitive to local filament and network properties. [S0031-9007(97)05158-2].

引用

页码：1106 / 1109

页数：4

共 13 条

[1] Subdiffusion and anomalous local viscoelasticity in actin networks [J].

Amblard, F ;

Maggs, AC ;

Yurke, B ;

Pargellis, AN ;

Leibler, S .

PHYSICAL REVIEW LETTERS, 1996, 77 (21) :4470-4473

[2]

CARRAWAY KL, 1992, CYTOSKELETON

[3]

DOI M, 1975, J PHYS-PARIS, V36, P607, DOI 10.1051/jphys:01975003607-8060700

[4] Buckling microtubules in vesicles [J].

Elbaum, M ;

Fygenson, DK ;

Libchaber, A .

PHYSICAL REVIEW LETTERS, 1996, 76 (21) :4078-4081

[5] DYNAMIC SCATTERING FROM SEMIFLEXIBLE POLYMERS [J].

FARGE, E ;

MAGGS, AC .

MACROMOLECULES, 1993, 26 (19) :5041-5044

[6]

Felgner H, 1996, J CELL SCI, V109, P509

[7] PHASE-DIAGRAM OF MICROTUBULES [J].

FYGENSON, DK ;

BRAUN, E ;

LIBCHABER, A .

PHYSICAL REVIEW E, 1994, 50 (02) :1579-1588

[8] FLEXURAL RIGIDITY OF MICROTUBULES AND ACTIN-FILAMENTS MEASURED FROM THERMAL FLUCTUATIONS IN SHAPE [J].

GITTES, F ;

MICKEY, B ;

NETTLETON, J ;

HOWARD, J .

JOURNAL OF CELL BIOLOGY, 1993, 120 (04) :923-934

[9]

Granek R, 1997, J PHYS II, V7, P1761, DOI 10.1051/jp2:1997214

[10] DIRECT MEASUREMENT OF THE WAVE-VECTOR-DEPENDENT BENDING STIFFNESS OF FREELY FLICKERING ACTIN-FILAMENTS [J].

KAS, J ;

STREY, H ;

BARMANN, M ;

SACKMANN, E .

EUROPHYSICS LETTERS, 1993, 21 (08) :865-870

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