Construction of twisted graphene-silicene heterostructures

Han, Guangyuan; Shan, Huan; Zhang, Lizhi; Xu, Wenhua; Gao, Zhao-Yan; Guo, Hui; Li, Geng; Gao, Hongjun

doi:10.1007/s12274-023-5408-5

Cited by 6 publications

(9 citation statements)

References 44 publications

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“…This conclusion is also similar to the result of the reported work using monomers containing chlorine functional groups to modify HAFs. [ 13 ] However, the tensile strength of GO‐N 3 /PBIA‐CN fibers can be improved to 5.08 ± 0.24 GPa because of the improved degree of crystallinity and orientation by compositing GO‐N 3 , which shows only a 3% decrease compared to PBIA fibers. The IFSS of GO‐N 3 /PBIA‐CN (40.04 ± 2.41 MPa) is significantly enhanced by 50% compared to PBIA fibers.…”

Section: Resultsmentioning

confidence: 99%

“…The high tensile strength of GO‐N 3 /PBIA fibers is mainly attributed to the improved degree of orientation and crystallinity of PBIA‐CN fibers under the inductive effect of GO‐N 3 , which is consistent with the previous works. [ 13 ] In addition, stress relaxation curves show that the initial stress retention of GO‐N 3 /PBIA‐CN fibers (88.04%) is higher than those of PBIA‐CN (86.29%), GO‐N 3 /PBIA (84.54%), and PBIA (84.23%) fibers (Figure 4c). The higher resistance to the interchain slippage of GO‐N 3 /PBIA‐CN fibers originated from the strong interaction based on covalent bonding between GO‐N 3 and PBIA‐CN chains, which can promote stress transfer and suppress strain localization.…”

Section: Resultsmentioning

confidence: 99%

“…[ 11 ] HAFs featuring excellent mechanical performances, are vital materials in aeronautical engineering, special protection equipment, and civil field, and have also been industrialized in global corporations, including Kolon, Zhonglan Chenguang Chemical Research Institute, DuPont, Kamensk, and so on, which provides a broader perspective on the industry landscape. [ 12–15 ]…”

Section: Introductionmentioning

confidence: 99%

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High Interfacial Shear Strength and High Tensile Strength in Heterocyclic Aramid Fibers with Improved Interchain Interaction

Luo,

Wen,

et al. 2023

Adv Funct Materials

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As a typical kind of high‐performance fibers, heterocyclic aramid fibers are widely used to reinforce resins to prepare advanced lightweight composites with high mechanical performances. However, their poor interfacial shear strength limits the combination with resins and leads to undesirable interfacial strength of composites. Thus, heterocyclic aramid fibers with high interfacial shear strength and high tensile strength are highly desired. Herein, heterocyclic aramid fibers with a high interfacial shear strength of 40.04 ± 2.41 MPa and a high tensile strength of 5.08 ± 0.24 GPa are reported, in which the nitrile‐modified poly‐(benzimidazole‐terephthalamide) polymer chains are crosslinked by azide‐functionalized graphene oxide nanosheets. The improved interchain interaction can conquer the splitting of nanofibrils and strengthen the skin‐core layer of heterocyclic aramid fibers, while the graphene oxide can induce an ordered arrangement of polymer chains to improve the crystallinity and orientation degree of fibers. These two effects account for the high interfacial shear strength and high tensile strength of heterocyclic aramid fibers. These findings have provided a strategy to efficiently enhance the interfacial shear strength as well as the tensile strength of high‐performance fibers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High Interfacial Shear Strength and High Tensile Strength in Heterocyclic Aramid Fibers with Improved Interchain Interaction

Luo,

Wen,

et al. 2023

Adv Funct Materials

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“…Twistronics, traditionally focused on graphene and graphene-based 2D structures [1], are now expanding to incorporate non-graphene 2D materials like silicene and bismuthene [13][14][15][16]. This shift promises potential discoveries of unique topological phases and kagome flat band systems [17,18].…”

Section: Introductionmentioning

confidence: 99%

Moiré-modulated band gap and van Hove singularities in twisted bilayer germanene

Bampoulis,

Castenmiller,

Klaassen

et al. 2024

2D Mater.

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Twisting bilayers of two-dimensional topological insulators has the potential to create unique quantum states of matter. Here, we successfully synthesized a twisted bilayer of germanene on Ge2Pt(101) with a 21.8o twist angle, corresponding to a commensurate (√7×√7) structure. Using scanning tunneling microscopy and spectroscopy, we unraveled the structural and electronic properties of this configuration, revealing a moiré-modulated band gap and a well-defined edge state. This band gap opens at AB/BA stacked sites and closes at AA stacked sites, a phenomenon attributed to the electric field induced by the scanning tunneling microscopy tip. Our study further revealed two van Hove singularities at -0.8 eV and +1.04 eV, resulting in a Fermi velocity of (8±1)×105 m/s. Our tight-binding results uncover a unique quantum state, where the topological properties could be regulated through an electric field, potentially triggering two topological phase transitions.

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“…The introduction of Ni elements could suppress the poisoning of Cu sites by weakening the adsorption of nitrite intermediates, thereby accelerating the reaction process and enhancing the activity. [21][22][23][24][25][26][27][28] Various characterization results imply that the synergy between Cu and Ni plays a key role in nitrate reduction. 29,30 Thus, the optimized electrocatalysts could obtain the current density of 400 mA cm À2 and the Faraday efficiency (FE) of 97% at a low potential of À0.3 V vs. RHE.…”

mentioning

confidence: 99%

Accelerating electrosynthesis of ammonia from nitrates using coupled NiO/Cu nanocomposites

Zhu,

Tang,

Wang

et al. 2024

Chem. Commun.

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Construction of twisted graphene-silicene heterostructures

Cited by 6 publications

References 44 publications

High Interfacial Shear Strength and High Tensile Strength in Heterocyclic Aramid Fibers with Improved Interchain Interaction

High Interfacial Shear Strength and High Tensile Strength in Heterocyclic Aramid Fibers with Improved Interchain Interaction

Moiré-modulated band gap and van Hove singularities in twisted bilayer germanene

Accelerating electrosynthesis of ammonia from nitrates using coupled NiO/Cu nanocomposites

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