Superconductor Memory Structure for Cryogenic Operation
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Solution Overview
Problem
Current memory technologies are inadequate for operating effectively at very low temperatures, where traditional memory devices face challenges in maintaining functionality and efficiency.
Innovation Solution
A memory structure utilizing superconductor technology, comprising a first and second superconductor field element, a movable magnetic element, and a heater, where the magnetic element is repelled by the force field created between the superconductors and controlled by an electric current through the heater, allowing for data storage and retrieval by altering the magnetic element's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional memory devices are used, then they can operate at standard temperatures, but they fail to function effectively at very low temperatures
Solution Approach 1:
The patent changes the operating parameter regime by utilizing superconducting materials that exhibit zero electrical resistance below a critical temperature. This fundamental parameter change enables the memory device to operate effectively at very low temperatures (cryogenic range) where traditional semiconductor memory fails, transforming the temperature from a limiting factor to an enabling condition for superconducting operation
Solution Approach 2:
The patent exploits the phase transition of superconducting materials at their critical temperature to achieve memory functionality. By cooling the superconducting elements below their critical temperature, the system transitions from a normal resistive state to a superconducting state with zero resistance, enabling lossless current circulation and stable magnetic field generation for memory storage at cryogenic temperatures
2Reliability
If superconductor technology is used, then memory devices can function at very low temperatures, but the critical temperature is very low even for high temperature superconductors
Solution Approach 1:
The patent replaces mechanical cooling systems with magnetic field-based operation. By utilizing the Meissner effect and magnetic levitation principles, the system achieves memory functionality through magnetic field interactions rather than relying on complex thermal management, enabling operation at the inherently low critical temperatures of superconducting materials
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the superconducting elements and the memory storage mechanism. The magnetic fields mediate the interaction between superconducting currents and magnetic elements, enabling data storage and retrieval through magnetic coupling rather than direct thermal or electrical connections, thus working around the low critical temperature limitation
3Speed
If magnetic levitation is used to control the movable magnetic element, then fast read speeds are achieved, but the structure becomes more complex
Solution Approach 1:
The patent merges the magnetic levitation function with the memory storage function by integrating the movable magnetic element directly into the memory cell structure. The magnetic element that provides levitation for fast read operations also serves as the storage element, combining two functions into a single integrated component and reducing overall structural complexity
Solution Approach 2:
The movable magnetic element serves multiple functions simultaneously: it acts as the storage element for data retention, provides the levitating mass for fast read operations through magnetic coupling, and enables write operations through controlled movement. This multi-functionality reduces the need for separate components and simplifies the overall device architecture despite the sophisticated physics involved
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 solution enables memory devices to function reliably at very low temperatures with fast read speeds and good cycling endurance, utilizing magnetic levitation principles to switch between memory states based on the superconductors' magnetic fields and heater control.
Implementation Method 1
The movable magnetic element may be repelled by the second field element and disposed in a space between the first field element and the second field element to be controlled by the force field
Implementation Method 2
When a material transforms into the superconducting state, the Meissner effect (or Meissner-Ochsenfeld effect) occurs, which causes expulsion of a magnetic field from the interior of the material
Implementation Method 3
The movable magnetic element may move toward the first field element in response to a first electric current that passes through the first heater
Data Source
AI summary
Memory devices and methods are provided. In one aspect, a memory device may comprise a first field element, a second field element, a movable magnetic element, and a first heater. The first field element may be a superconductor. The second field element may be disposed facing the first field element and at a first distance from the first field element. The movable magnetic element may be repelled by the second field element and disposed in a space between the first field element and the second field element. The first heater may be arranged near the first field element. The movable magnetic element may move toward the first field element in response to a first electric current that passes through the first heater.