Shape Memory Alloy Storage with Nanoimprinted Thermoelectric Modules
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Solution Overview
Problem
Existing information storage devices using shape memory alloys face challenges in achieving rapid and localized heating and cooling, which limits their ability for efficient erasure and rewriting of information.
Innovation Solution
Incorporating thermoelectric modules nanoimprinted between a substrate and a shape memory alloy film, allowing for selective erasure and rewriting of digital information through controlled electrical current application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If passive cooling is used to cool the shape memory alloy film, then energy consumption is reduced, but cooling speed is too slow to achieve rapid information erasure and rewriting
Solution Approach 1:
A thermoelectric module is introduced as an intermediary device between the heating element and the shape memory alloy film. This module enables active cooling through the Peltier effect when electrical current is applied, providing rapid temperature reduction without relying on slow passive cooling mechanisms.
Solution Approach 2:
The patent changes the thermal control parameter from passive thermal diffusion to active thermoelectric cooling. By applying electrical current to the thermoelectric module, the system can rapidly switch between heating and cooling modes, achieving fast temperature cycling necessary for high-speed information storage and erasure operations.
2Productivity
If fast heating and cooling is applied to the shape memory alloy film, then information erasure and rewriting speed is improved, but device complexity increases due to active cooling requirements
Solution Approach 1:
The patent combines the heating and cooling functions into a single thermoelectric module. By applying electrical current in opposite directions, the same device can provide both rapid heating and rapid cooling, eliminating the need for separate heating and cooling systems and reducing overall device complexity.
Solution Approach 2:
The thermoelectric module serves multiple functions: it can heat the shape memory alloy film when current flows in one direction and cool it when current flows in the opposite direction. This multi-functionality allows rapid information erasure and rewriting while maintaining relatively simple device architecture.
3Manufacturing precision
If localized heating and cooling capability is implemented, then information storage density and re-writability are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the thermoelectric module into multiple independently controllable units that can be selectively activated. This segmentation allows localized heating and cooling of specific regions of the shape memory alloy film, enabling high-density information storage and selective erasure of individual data elements without affecting adjacent regions.
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
Enables high-density storage and rapid re-writability of digital information, with erasure and rewriting times significantly improved compared to passive cooling methods.
Implementation Method 1
One or more thermoelectric modules is/are nanoimprinted between the substrate and the shape memory alloy film. The thermoelectric module(s) is adapted to selectively erase at least some of the digital information from the shape memory alloy film.
Data Source
AI summary
An information storage device includes a substrate and a shape memory alloy film established on the substrate. The shape memory alloy film may receive, supply, and store digital information. One or more thermoelectric modules is/are nanoimprinted between the substrate and the shape memory alloy film. The thermoelectric modules(s) is adapted to selectively erase at least some of the digital information from the shape memory alloy film.