Nanorheology measurement on a single polymer chain

被引：29
作者：
Sakai, Y
Ikehara, T
Nishi, T
Nakajima, K
Hara, M
机构：
[1] Univ Tokyo, Sch Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[2] RIKEN, Inst Phys & Chem Res, Frontier Res Syst, Wako, Saitama 3510198, Japan
来源：
APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 04期
关键词：
D O I：
10.1063/1.1494862
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The mechanical properties of a single chain of a synthesized polystyrene were measured by atomic force microscopy (AFM). In the conventional force-distance curve measurement, the stress-strain behavior of a chain was obtained. We also measured the dynamic sinusoidal response, as in macroscopic rheological studies, repeatedly at several extension lengths before full stretching or rupturing, by a "nanorheology AFM" that we constructed. It enabled us to design any required movements on a z-piezoelectric scanner, especially sinusoidal movements. The rheological properties of a single polymer chain were discussed from the frequency-dependent measurement. (C) 2002 American Institute of Physics.
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收藏
页码：724 / 726
页数：3
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