Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A Calculation Method for Buckling Deformation of Graphene-Flexible Substrate Structures

Active Publication Date: 2022-04-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ergodic algorithm is used to obtain the energy minimum value during the calculation simulation process, and the calculation cycle is long in the process of searching for the energy minimum value.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Calculation Method for Buckling Deformation of Graphene-Flexible Substrate Structures
  • A Calculation Method for Buckling Deformation of Graphene-Flexible Substrate Structures
  • A Calculation Method for Buckling Deformation of Graphene-Flexible Substrate Structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In this simulation calculation, the initial tensile strain ε 0 = 40%, the strain after release is ε r =0; the initial length of PDMS is 19.6241nm, the width is 3.9704nm, the height is 4nm, and its density is 0.8×10 3 kg / m 3 , the elastic modulus is 2.63MPa; the elastic modulus and thickness of graphene are 1.1TPa and 0.335nm respectively, the total number of initial parent individuals is set to 20 groups, the evolution times are set to 50 times, and the crossover and mutation probabilities are set to 0.6 and 0.1 .

[0069] Initially set A g 、A s , λ and h genetic search ranges are [0, 3.9]nm, [0, 3.9]nm, [10, 300]nm and [0.01, 0.4]nm, the A g 、A s , λ and h are A g = 1.1918nm, A s = 0.1006nm, λ = 115.9660nm and h = 0.3000nm, the energy minimum is 8.406×10 -4 pJ, which is 1.636×10 less than its energy at perfect planarity -3 pJ should be small, and the calculation time of the whole result is about 90 minutes.

[0070] Compared with the previous traversal algor...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A calculation method for buckling deformation of a graphene-flexible substrate structure, comprising the steps of: establishing an atomic model of graphene; establishing an atomic model of a flexible substrate; calculating the total potential energy of graphene and its elastic substrate; seeking the minimum potential energy. The invention improves the numerical precision of the result by combining the genetic algorithm to optimize the calculation, and greatly reduces the calculation time, which is beneficial to the analog calculation of samples of the same larger size in the future.

Description

technical field [0001] The invention belongs to the technical field of micro-nano composite materials, and in particular relates to a calculation method for buckling deformation of a graphene-flexible substrate structure. Background technique [0002] Graphene is a kind of honeycomb planar film formed by sp2 hybridization of carbon atoms, and it is a quasi-two-dimensional material with only one atomic layer thickness. Due to its very good strength, flexibility, electrical conductivity, thermal conductivity, and optical properties, it has been greatly developed in the fields of physics, materials science, electronic information, computers, and aerospace. Graphene films produced by chemical vapor deposition are released after a tensile strain of 40%, with less than 0.2% plastic deformation, and without any damage to the interior, making them potentially Stretching electrode materials for electrical energy storage devices. Since the buckling morphology of graphene depends lar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G16C60/00G16C20/70G06N3/12
CPCG06N3/126G06F30/20
Inventor 高希光袁雨浓
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products