Microbial Nanowires for Sustainable Energy Devices

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Solution Overview

Problem

The challenge lies in developing new sources of energy and materials for nanoelectronic devices and fuel cells due to the limitations of silicon technology, including high costs, heat dissipation issues, and environmental concerns related to energy consumption and pollution.

Innovation Solution

Microbial nanowires made from microbial pilins, which are genetically or chemically modified to enhance their conductive, adhesive, and coupling properties, are used to create novel nanoelectronic materials and components for fuel cells.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If silicon technology is used for nanoelectronic devices, then device performance increases, but manufacturing cost and heat dissipation problems worsen

Engineering Contradiction:
Improvedevice performanceVSAvoidmanufacturing cost
Core Design Contradiction:
PowerVSEase of manufacture

Solution Approach 1:

The patent changes the material parameter from silicon to microbial nanowires, fundamentally altering the physical and chemical properties of the nanoelectronic device. This substitution addresses both the performance requirement and the manufacturing cost issue by using biologically produced materials that can be grown at lower costs compared to sophisticated silicon fabrication facilities.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the mechanical/silicon-based electronic system with a biological system using microbial nanowires. These nanowires are produced through biological processes in microorganisms, substituting the complex mechanical fabrication processes required for silicon devices, thereby reducing manufacturing costs while maintaining functional performance.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Volume of moving object

If silicon devices are miniaturized, then device density increases, but heat dissipation and electric field breakdown worsen

Engineering Contradiction:
Improvedevice sizeVSAvoidheat dissipation
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The patent changes the material composition parameter from silicon to microbial nanowire materials, which possess different thermal and electrical properties. These biologically derived nanowires exhibit superior heat dissipation characteristics and higher breakdown voltage thresholds, enabling miniaturized devices to operate without the heat and breakdown problems that plague silicon-based miniaturized devices.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If microbial nanowires are genetically modified, then conductive properties improve, but nanowire structure complexity increases

Engineering Contradiction:
Improveconductive propertiesVSAvoidnanowire structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality modification by making targeted genetic changes to specific regions of the nanowire-producing microorganisms. Rather than redesigning the entire nanowire structure, the invention modifies local genetic sequences that control nanowire production, thereby improving conductive properties while maintaining the overall simplicity of the nanowire structure and avoiding excessive complexity.

Inventive Principle:
Principle #3Local quality

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

These modified microbial nanowires demonstrate improved conductivity and adhesive properties, enabling the development of efficient nanoelectronic devices and microbial fuel cells, addressing the need for sustainable energy solutions and new materials.

Implementation Method 1

microbial nanowires that conduct electricity

Methodology Applied
Scientific EffectElectrical conductivity: Conduction (electrical)

Data Source

PatentUS9409955B2Microbial nanowires
Publication Date: 2016.08.09 BOARD OF TRUSTEES OPERATING MICHIGAN STATE UNIV
  • US9409955B2 patent drawing
  • US9409955B2 patent drawing
  • US9409955B2 patent drawing

AI summary

The application describes electrically conductive nanowires, as well as genetically and/or chemically modified nanowires with modified conductive, adhesive and/or coupling properties.