Thermally Contractible Polymer Crumpling of 2D Materials
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for creating three-dimensional features in two-dimensional materials like graphene lack scalability and spatial selectivity, limiting their application in advanced optoelectronic and bio-electronic devices.
Innovation Solution
A method involving the use of thermally contractible polymers to induce buckling and crumpling in two-dimensional materials, allowing for controlled and deterministic creation of three-dimensional structures through heat-induced deformation, enabling scalable and spatially selective texturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional methods are used to create three-dimensional features in two-dimensional materials, then some texturing can be achieved, but scalability and spatial selectivity are limited
Solution Approach 1:
The patent applies local quality by using patterned adhesive regions on the substrate that selectively bond to specific areas of the two-dimensional material. This enables spatially selective crumpling where only certain regions of the material are textured while others remain flat, achieving both adaptability and scalability simultaneously
Solution Approach 2:
The substrate surface is segmented into adhesive and non-adhesive regions, allowing independent control over texturing in different areas. This segmentation enables scalable production of devices with spatially selective three-dimensional features across large areas
2Shape
If thermally contractible polymer is heated to induce buckling, then three-dimensional crumpled structures are formed, but the process requires precise temperature control
Solution Approach 1:
The patent utilizes parameter changes by heating the thermally contractible polymer above its glass transition temperature, which triggers a dramatic change in the polymer's physical properties and enables large-scale contraction. This parameter change approach simplifies temperature control requirements compared to gradual heating methods
Solution Approach 2:
The process exploits the phase transition of the thermally contractible polymer at its glass transition temperature. The polymer transitions from a rigid glassy state to a rubbery state, enabling rapid contraction and buckling of the two-dimensional material without requiring precise incremental temperature control
3Area of moving object
If crumpling is induced in two-dimensional materials, then surface area increases and reactivity is enhanced, but material integrity must be preserved
Solution Approach 1:
The patent applies preliminary action by first forming the two-dimensional material on the thermally contractible polymer substrate before inducing crumpling. This ensures the material is properly supported and positioned before the deformation process, preventing damage and preserving integrity while achieving the desired surface area increase
Solution Approach 2:
The thermally contractible polymer serves as an intermediary that mediates the crumpling process. It provides a controlled mechanism for inducing buckles that preserves material integrity by distributing stresses evenly, while still achieving the necessary surface area enhancement for improved reactivity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach preserves the material integrity of graphene and other two-dimensional materials, allowing for enhanced surface area and reactivity, and facilitates integration onto arbitrary substrates and curvilinear surfaces, while maintaining electrical properties, thus enabling the development of advanced 3D devices like crumpled graphene FETs.
Implementation Method 1
heating the thermally contractible polymer to contract the polymer and induce buckling of the monolayer
Data Source
AI summary
A method of creating crumples in a monolayer entails contacting a monolayer comprising a two-dimensional material with a thermally contractible polymer, and heating the thermally contractible polymer to contract the polymer and induce buckling of the monolayer, where a plurality of crumples are formed in the monolayer due to the buckling. A device having a crumpled microstructure includes a monolayer comprising a two-dimensional material and including a plurality of crumples.