Intrinsic Bauschinger Effect and Recoverable Plasticity in Pentatwinned Silver Nanowires Tested in Tension. Bernal, R. A., Aghaei, A., Lee, S., Ryu, S., Sohn, K., Huang, J., Cai, W., & Espinosa, H. Nano Letters, 15(1):139–146, January, 2015. Publisher: American Chemical Society
Intrinsic Bauschinger Effect and Recoverable Plasticity in Pentatwinned Silver Nanowires Tested in Tension [link]Paper  doi  abstract   bibtex   
Silver nanowires are promising components of flexible electronics such as interconnects and touch displays. Despite the expected cyclic loading in these applications, characterization of the cyclic mechanical behavior of chemically synthesized high-quality nanowires has not been reported. Here, we combine in situ TEM tensile tests and atomistic simulations to characterize the cyclic stress–strain behavior and plasticity mechanisms of pentatwinned silver nanowires with diameters thinner than 120 nm. The experimental measurements were enabled by a novel system allowing displacement-controlled tensile testing of nanowires, which also affords higher resolution for capturing stress–strain curves. We observe the Bauschinger effect, that is, asymmetric plastic flow, and partial recovery of the plastic deformation upon unloading. TEM observations and atomistic simulations reveal that these processes occur due to the pentatwinned structure and emerge from reversible dislocation activity. While the incipient plasti...
@article{bernal_intrinsic_2015,
	title = {Intrinsic {Bauschinger} {Effect} and {Recoverable} {Plasticity} in {Pentatwinned} {Silver} {Nanowires} {Tested} in {Tension}},
	volume = {15},
	issn = {1530-6984},
	url = {http://pubs.acs.org/doi/abs/10.1021/nl503237t},
	doi = {10.1021/nl503237t},
	abstract = {Silver nanowires are promising components of flexible electronics such as interconnects and touch displays. Despite the expected cyclic loading in these applications, characterization of the cyclic mechanical behavior of chemically synthesized high-quality nanowires has not been reported. Here, we combine in situ TEM tensile tests and atomistic simulations to characterize the cyclic stress–strain behavior and plasticity mechanisms of pentatwinned silver nanowires with diameters thinner than 120 nm. The experimental measurements were enabled by a novel system allowing displacement-controlled tensile testing of nanowires, which also affords higher resolution for capturing stress–strain curves. We observe the Bauschinger effect, that is, asymmetric plastic flow, and partial recovery of the plastic deformation upon unloading. TEM observations and atomistic simulations reveal that these processes occur due to the pentatwinned structure and emerge from reversible dislocation activity. While the incipient plasti...},
	number = {1},
	urldate = {2017-08-06},
	journal = {Nano Letters},
	author = {Bernal, Rodrigo A. and Aghaei, Amin and Lee, Sangjun and Ryu, Seunghwa and Sohn, Kwonnam and Huang, Jiaxing and Cai, Wei and Espinosa, Horacio},
	month = jan,
	year = {2015},
	note = {Publisher: American Chemical Society},
	keywords = {Flexible electronics, cyclic straining, displacement control, fatigue, nanoscale plasticity},
	pages = {139--146},
}

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