Miniaturized Mechanical Switch With Self-Assembled Molecular Layer

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Solution Overview

Problem

There is a need for miniaturized mechanical switches and effective methods for controlling them in electrical circuits, as existing technologies have limitations in integrating miniaturized components into integrated circuits and ensuring reliable operation.

Innovation Solution

The solution involves a mechanical switch with a first electrical contact and a moveable support region having a second electrical contact, where a self-assembled molecular layer is interposed between the contacts, allowing for the application of a Coulomb force to open or close the switch, facilitating the formation of a controllable electrical pathway in an electrical circuit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a mechanical switch is miniaturized for integration into an integrated circuit, then the device size is reduced and integration capability is improved, but the reliability of operation and control precision deteriorate

Engineering Contradiction:

Improveswitch sizeVSAvoidoperational reliability

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

A self-assembled monolayer (SAM) is introduced as an intermediary between the electrical contacts. This molecular layer serves as a precise mediator that enables reliable electrical connection at the nanoscale, resolving the reliability issue that arises from miniaturization by providing a controlled interface between contacts.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional mechanical actuation with Coulomb force (electrostatic force) to move the second electrical contact. This substitution of mechanical control with electrical control enables precise and reliable operation of miniaturized switches, overcoming the control precision problems associated with small-scale mechanical systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Volume of moving object

If the switch components are miniaturized, then integration into circuits is facilitated, but the complexity of ensuring reliable operation increases

Engineering Contradiction:

Improvecomponent sizeVSAvoidcontrol complexity

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The self-assembled monolayer automatically forms through self-assembly processes, creating a organized molecular structure without complex external intervention. This self-service approach simplifies the fabrication process and reduces the complexity of ensuring reliable operation at miniaturized scales.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

By using Coulomb force instead of mechanical actuation mechanisms, the patent eliminates complex mechanical control systems. The electrical control method is inherently simpler and more reliable for miniaturized devices, reducing the overall device complexity while maintaining integration benefits.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If a self-assembled molecular layer is introduced between contacts, then reliable electrical connection is achieved, but the device structure becomes more complex

Engineering Contradiction:

Improveelectrical connection reliabilityVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The self-assembled monolayer acts as a nanoscale intermediary that provides reliable electrical connection between contacts. Although it adds a structural element, this single molecular layer is far simpler than alternative approaches for ensuring reliable connections at miniaturized scales, representing a net reduction in overall structural complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 configuration enables the creation of miniaturized mechanical switches that can be efficiently integrated into circuits, providing reliable control and operation by allowing the switch to be opened or closed through the displacement of the self-assembled molecular layer, thus forming a low-resistance pathway for electrical currents.

Implementation Method 1

A self-assembled molecular layer is interposed between the first and second electrical contacts

Methodology Applied

Scientific EffectSelf-assembly: Self-Assembly

Implementation Method 2

applying a coulomb force causing the second electrical contact to move relative to the first electrical contact such that the switch is opened or closed

Methodology Applied

Scientific EffectCoulomb force: Coulomb's Law

Data Source

PatentUS7737376B2Mechanical switch

Publication Date: 2010.06.15 NOKIA OF AMERICA CORP

AI summary

Apparatus including a substrate and a mechanical switch, the mechanical switch located over the substrate, the mechanical switch including: a first electrical contact over the substrate; a support over the substrate, the support including a region moveable relative to the first electrical contact, the moveable region having a second electrical contact, the second electrical contact located over the first electrical contact; and a self-assembled molecular layer between the substrate and the second electrical contact. Method including placing into operation an apparatus, and applying a coulomb force causing the second electrical contact to move relative to the first electrical contact such that the switch is opened or closed.