Nano Resonator with Parallel Nano-Wire Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Nano resonators used in microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) require high sensitivity to measure physical quantities, such as weight in particle units, but existing designs face challenges in achieving the necessary sensitivity and signal detection efficiency.
Innovation Solution
A nano resonator design featuring multiple nano-wire channels with identical doping type and concentration, suspended from a substrate, and connected to sources and drains, allowing for parallel operation and enhanced signal detection sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single nano-wire channel is used in the resonator, then the device complexity is low, but the sensitivity and signal detection efficiency are insufficient
Solution Approach 1:
The resonator is divided into multiple independent nano-wire channels (first, second, third channels) that operate in parallel. Each channel functions as an independent sensing element, and the combined output from all channels provides enhanced sensitivity and signal detection efficiency compared to a single channel, while maintaining manageable device complexity through modular architecture
Solution Approach 2:
Multiple nano-wire channels are merged into a single resonator device, sharing common sources, drains, and control structures. This merging approach achieves improved sensitivity through parallel signal detection while avoiding the full complexity of completely separate devices, as the channels share infrastructure components
2Measurement precision
If the first insulating layer is removed between substrate and nano-wire channel, then the sensitivity is improved through suspension, but the manufacturing precision requirements increase
Solution Approach 1:
The first insulating layer is selectively removed (etched away) from the region between the substrate and the nano-wire channel, extracting this material layer to create a suspended structure. This extraction allows the nano-wire channel to vibrate freely above the substrate, improving sensitivity by reducing mechanical damping, while the selective nature of the etching process manages the manufacturing precision requirements
3Measurement precision
If multiple nano-wire channels are disposed in parallel, then the signal detection sensitivity is enhanced, but the device complexity increases
Solution Approach 1:
The multiple nano-wire channels are designed to perform the same sensing function simultaneously, with each channel detecting signals independently. This universal approach allows parallel operation for enhanced sensitivity while using identical structures and processes for all channels, reducing the complexity increase compared to having different functional elements
Data Source
AI summary
A nano resonator includes a substrate, a first insulating layer disposed on the substrate, a first source disposed on the first insulating layer at a first position, a first drain disposed on the first insulating layer at a second position spaced apart from the first position so that the first drain faces the first source, a first nano-wire channel having a first end connected to the first source and a second end connected to the first drain, and having a doping type and a doping concentration that are identical to a doping type and a doping concentration of the first source and the first drain, and a second nano-wire channel disposed at a predetermined distance from the first nano-wire channel in a direction perpendicular to the substrate or a direction parallel to the substrate.