Wrinkled Graphite Structure for Room-Temperature Superconductivity
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Solution Overview
Problem
Current superconducting materials fail to exhibit zero-resistance states at room temperature and ambient pressure, limiting their practical applications in dissipationless current transport.
Innovation Solution
A graphite-based superconductor device with a wrinkle region in its topmost atomic layers, where electrodes are positioned to electrically contact the wrinkles, achieving a zero-resistance state by ensuring electronic coupling between the wrinkles, which are spaced at most 0.2 μm apart, enabling room-temperature superconductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional superconducting materials are used, then zero-resistance state is achieved, but only at low temperatures below critical temperature Tc
Solution Approach 1:
The patent applies local quality by creating wrinkles specifically in the topmost atomic layers of graphite near the surface, rather than modifying the bulk material. These localized wrinkle structures with specific geometries (ridges and valleys) induce superconductivity locally, which then propagates to achieve macroscopic zero-resistance state at room temperature.
Solution Approach 2:
The patent creates a composite structure by combining wrinkled and flat regions within the graphite atomic layers. The wrinkled regions act as superconducting domains with enhanced electron-phonon coupling, while the flat regions provide structural stability. This composite architecture enables room-temperature superconductivity while maintaining material integrity.
2Ease of operation
If room-temperature superconductivity is achieved through wrinkles in topmost layers, then dissipationless current transport is enabled at ambient conditions, but requires precise control of wrinkle spacing and geometry
Solution Approach 1:
The patent utilizes curvature by introducing wrinkles with specific radii of curvature in the graphite atomic layers. The wrinkle geometry (characterized by ridge height, valley depth, and curvature radius) modifies the electronic structure and enhances electron-phonon coupling. The curvature-induced strain and orbital hybridization are key to achieving room-temperature superconductivity while allowing flexible control through geometric parameters.
3Reliability
If electrodes are positioned to electrically contact wrinkles spaced at most 0.2 μm apart, then zero-resistance state is demonstrated, but device structure becomes more complex
Solution Approach 1:
The patent applies partial action by using only the topmost atomic layers of graphite to form the wrinkle structures, rather than modifying the entire bulk material. The electrodes contact only the wrinkle regions in these surface layers, leaving the bulk graphite structure intact. This approach reduces manufacturing complexity while achieving the desired superconducting effect through surface engineering.
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
The device demonstrates a zero-resistance state at room temperature and ambient pressure, supporting dissipationless current transport, thereby realizing room-temperature superconductivity and enhancing the critical temperature of the superconductor.
Implementation Method 1
a superconductor with a superconducting transition temperature (critical temperature; Tc) of at least room temperature (280 K to 310 K), preferably at ambient pressure (0.08 to 0.12 MPa)... The device demonstrates a zero-resistance state at room temperature and ambient pressure, supporting dissipationless current transport
Data Source
AI summary
A superconductor device comprises a graphite structure, a first electrode, a second electrode, and a wrinkle region. The graphite structure comprises at least one topmost atomic layer. The first electrode is arranged over the at least one topmost atomic layer. The second electrode is arranged over the at least one topmost atomic layer and spaced apart from the first electrode. The wrinkle region is comprised in the at least one topmost atomic layer. The wrinkle region is arranged between the first electrode and the second electrode and comprises a plurality of wrinkles with a pair of wrinkles. The first electrode and the second electrode both electrically contact both wrinkles of the pair. A distance between the wrinkles of the pair is at most 0.2 μm.