Fatigue failure and molecular machine design.
Fatigue failure and molecular machine design.
复制标题
疲劳失效和分子机器设计。
DOI:
10.1002/smll.201100240
复制
发表时间:
2011
期刊:
影响因子:
13.3
通讯作者:
E. Dumont
中科院分区:
文献类型:
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作者:
H. Hess;E. Dumont
Sophisticated molecular machines have evolved in nature, and the first synthetic molecular machines have been demonstrated. With our increasing understanding of individual operating cycles, the question of how operation can be sustained over many cycles comes to the forefront. In the design of macroscale machines, performance and lifetime are opposing goals. Similarly, the natural evolution of biological nanomachines, such as myosin motor proteins, is likely constrained by lifetime requirements. Rather than bond rupture at high forces, bond fatigue under repeated small stresses may limit the mechanical performance of molecular machines. Here, the effect of cyclic stresses using single and double bonds as simple examples are discussed. Additionally, it is demonstrated that an increase in lifetime requires a reduction in mechanical load and that molecular engineering design features, such as polyvalent bonds capable of rebinding, can extend the bond lifetime dramatically. A universal scaling law for the force output of motors is extrapolated to the molecular scale to estimate the design space for molecular machines.
DOI:
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发表时间:
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期刊:
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影响因子:
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作者:
J. P. M. J. Fuller-J.-P.-M.-J.-Fuller-2298073197;C. B. Gooley;Saper;H P Van Dongen;G. Maislin;J. Mullington;H S Akiskal
通讯作者:
J. P. M. J. Fuller-J.-P.-M.-J.-Fuller-2298073197;C. B. Gooley;Saper;H P Van Dongen;G. Maislin;J. Mullington;H S Akiskal
DOI:
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发表时间:
--
期刊:
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影响因子:
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作者:
W J Lee;J. D. Lee;V. Kravchenko;R. Ulevitch;P. Brey;C. Asbury;Adrian N. Fehr;S. Block
通讯作者:
W J Lee;J. D. Lee;V. Kravchenko;R. Ulevitch;P. Brey;C. Asbury;Adrian N. Fehr;S. Block
影响因子:
3.4
作者:
Kellermayer, MSZ;Smith, SB;Granzier, HL
通讯作者:
Granzier, HL