scholarly journals Nanomechanical behavior and interfacial deformation beyond the elastic limit in 2D metal–organic framework nanosheets

2020 ◽  
Vol 2 (11) ◽  
pp. 5181-5191
Author(s):  
Zhixin Zeng ◽  
Irina S. Flyagina ◽  
Jin-Chong Tan
Keyword(s):  
Elastic Limit ◽  
Metal Organic Framework ◽  
Failure Mechanisms ◽  
Van Der Waals ◽  
Atomic Scale ◽  
Interfacial Failure ◽  
Nanoscale Mechanics ◽  
Metal Organic ◽  
Interfacial Deformation ◽  
Organic Framework

Quantitative nanoscale mechanics of 2D MOF nanosheets containing atomic scale porosity, revealing interfacial failure mechanisms triggered by using a diamond AFM nanoindenter. This methodology can be applied to numerous van der Waals solids.

scholarly journals Study of van der Waals bonding and interactions in metal organic framework materials

2014 ◽  
Vol 26 (13) ◽  
pp. 133002 ◽  
Author(s):  
Sebastian Zuluaga ◽  
Pieremanuele Canepa ◽  
Kui Tan ◽  
Yves J Chabal ◽  
Timo Thonhauser
Keyword(s):  
Metal Organic Framework ◽  
Van Der Waals ◽  
Framework Materials ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Nanomechanical Properties and Failure Mechanisms of Two-Dimensional Metal-Organic Framework Nanosheets

2020 ◽  
Author(s):  
Zhixin Zeng ◽  
Irina Flyagina ◽  
Jin-Chong Tan
Keyword(s):  
Mechanical Properties ◽  
Failure Modes ◽  
Metal Organic Framework ◽  
Failure Mechanisms ◽  
Cohesive Elements ◽  
Plastic Properties ◽  
Interfacial Sliding ◽  
Porous Nanosheets ◽  
Metal Organic ◽  
Organic Framework

Nanoscale mechanical properties measurement of porous nanosheets presents many challenges. Herein we show atomic force microscope (AFM) nanoindentation to probe the nanoscale mechanical properties of a 2‑D metal‑organic framework (MOF) nanosheet material, termed CuBDC [copper 1,4‑benzenedicarboxylate]. The sample thickness was ranging from ~10 nm (tens of monolayers) up to ~400 nm (stack of multilayers). In terms of its elastic‑plastic properties, the Young’s modulus (<i>E</i> ~ 22.9 GPa) and yield strength (𝜎<sub>Y</sub> ~ 448 MPa) have been determined in the through-thickness direction. Moreover, we have characterized the failure mechanisms of the CuBDC nanosheets, where three failure mechanisms have been identified: interfacial sliding, fracture of framework, and delamination of multilayered nanosheets. Threshold forces and corresponding indentation depths corresponding to the failure modes have been determined. To gain insights into the failure mechanisms, we employ finite-element models with cohesive elements to simulate the interfacial debonding of a stack of 2‑D nanosheets during the indentation process. The nanomechanical AFM methodology elucidated here will be pertinent to the study of other 2‑D hybrid nanosheets and van der Waals solids.

scholarly journals Strain Switching in van der Waals Heterostructures triggered by a Spin‐Crossover Metal Organic Framework

2022 ◽  
pp. 2110027
Author(s):  
Carla Boix‐Constant ◽  
Víctor García‐López ◽  
Efrén Navarro‐Moratalla ◽  
Miguel Clemente‐León ◽  
José Luis Zafra ◽  
...  
Keyword(s):  
Spin Crossover ◽  
Metal Organic Framework ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Metal Organic ◽  
Organic Framework

Energetics of van der Waals Adsorption on the Metal–Organic Framework NU-1000 with Zr6-oxo, Hydroxo, and Aqua Nodes

2017 ◽  
Vol 140 (1) ◽  
pp. 328-338 ◽  
Author(s):  
Wei Zhang ◽  
Yuanyuan Ma ◽  
Iván A. Santos-López ◽  
James M. Lownsbury ◽  
Haoyu Yu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Van Der Waals ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Nanomechanical Properties and Failure Mechanisms of Two-Dimensional Metal-Organic Framework Nanosheets

2020 ◽  
Author(s):  
Zhixin Zeng ◽  
Irina Flyagina ◽  
Jin-Chong Tan
Keyword(s):  
Mechanical Properties ◽  
Failure Modes ◽  
Metal Organic Framework ◽  
Failure Mechanisms ◽  
Cohesive Elements ◽  
Plastic Properties ◽  
Interfacial Sliding ◽  
Porous Nanosheets ◽  
Metal Organic ◽  
Organic Framework

Nanoscale mechanical properties measurement of porous nanosheets presents many challenges. Herein we show atomic force microscope (AFM) nanoindentation to probe the nanoscale mechanical properties of a 2‑D metal‑organic framework (MOF) nanosheet material, termed CuBDC [copper 1,4‑benzenedicarboxylate]. The sample thickness was ranging from ~10 nm (tens of monolayers) up to ~400 nm (stack of multilayers). In terms of its elastic‑plastic properties, the Young’s modulus (<i>E</i> ~ 22.9 GPa) and yield strength (𝜎<sub>Y</sub> ~ 448 MPa) have been determined in the through-thickness direction. Moreover, we have characterized the failure mechanisms of the CuBDC nanosheets, where three failure mechanisms have been identified: interfacial sliding, fracture of framework, and delamination of multilayered nanosheets. Threshold forces and corresponding indentation depths corresponding to the failure modes have been determined. To gain insights into the failure mechanisms, we employ finite-element models with cohesive elements to simulate the interfacial debonding of a stack of 2‑D nanosheets during the indentation process. The nanomechanical AFM methodology elucidated here will be pertinent to the study of other 2‑D hybrid nanosheets and van der Waals solids.

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