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Observation of piezoelectricity in free-standing monolayer MoS2

Overview of attention for article published in Nature Nanotechnology, December 2014
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (96th percentile)
  • Good Attention Score compared to outputs of the same age and source (77th percentile)

Mentioned by

news
2 news outlets
blogs
3 blogs
twitter
6 tweeters
patent
1 patent
facebook
1 Facebook page
wikipedia
1 Wikipedia page

Citations

dimensions_citation
461 Dimensions

Readers on

mendeley
549 Mendeley
Title
Observation of piezoelectricity in free-standing monolayer MoS2
Published in
Nature Nanotechnology, December 2014
DOI 10.1038/nnano.2014.309
Pubmed ID
Authors

Hanyu Zhu, Yuan Wang, Jun Xiao, Ming Liu, Shaomin Xiong, Zi Jing Wong, Ziliang Ye, Yu Ye, Xiaobo Yin, Xiang Zhang

Abstract

Piezoelectricity allows precise and robust conversion between electricity and mechanical force, and arises from the broken inversion symmetry in the atomic structure. Reducing the dimensionality of bulk materials has been suggested to enhance piezoelectricity. However, when the thickness of a material approaches a single molecular layer, the large surface energy can cause piezoelectric structures to be thermodynamically unstable. Transition-metal dichalcogenides can retain their atomic structures down to the single-layer limit without lattice reconstruction, even under ambient conditions. Recent calculations have predicted the existence of piezoelectricity in these two-dimensional crystals due to their broken inversion symmetry. Here, we report experimental evidence of piezoelectricity in a free-standing single layer of molybdenum disulphide (MoS2) and a measured piezoelectric coefficient of e11 = 2.9 × 10(-10) C m(-1). The measurement of the intrinsic piezoelectricity in such free-standing crystals is free from substrate effects such as doping and parasitic charges. We observed a finite and zero piezoelectric response in MoS2 in odd and even number of layers, respectively, in sharp contrast to bulk piezoelectric materials. This oscillation is due to the breaking and recovery of the inversion symmetry of the two-dimensional crystal. Through the angular dependence of electromechanical coupling, we determined the two-dimensional crystal orientation. The piezoelectricity discovered in this single molecular membrane promises new applications in low-power logic switches for computing and ultrasensitive biological sensors scaled down to a single atomic unit cell.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 549 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 8 1%
United Kingdom 3 <1%
China 2 <1%
Peru 1 <1%
Netherlands 1 <1%
Costa Rica 1 <1%
Belgium 1 <1%
Brazil 1 <1%
Spain 1 <1%
Other 1 <1%
Unknown 529 96%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 207 38%
Researcher 91 17%
Student > Master 47 9%
Professor > Associate Professor 33 6%
Professor 29 5%
Other 80 15%
Unknown 62 11%
Readers by discipline Count As %
Physics and Astronomy 159 29%
Materials Science 149 27%
Engineering 96 17%
Chemistry 32 6%
Energy 6 1%
Other 19 3%
Unknown 88 16%

Attention Score in Context

This research output has an Altmetric Attention Score of 48. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 08 June 2021.
All research outputs
#561,687
of 18,156,586 outputs
Outputs from Nature Nanotechnology
#619
of 3,035 outputs
Outputs of similar age
#9,896
of 316,399 outputs
Outputs of similar age from Nature Nanotechnology
#17
of 75 outputs
Altmetric has tracked 18,156,586 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 96th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,035 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 34.7. This one has done well, scoring higher than 79% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 316,399 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 96% of its contemporaries.
We're also able to compare this research output to 75 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 77% of its contemporaries.