Hollow Nanoshell Fabrication via Core Removal
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Solution Overview
Problem
Current nanotechnology techniques face challenges in controlling the size and spatial distribution of nanoclusters, and many compositions are incompatible with the high temperatures required for electronic system fabrication, leading to issues in integrating nanoclusters into devices.
Innovation Solution
A method for fabricating nanoshells by coating a nanometric core with a second material and applying a non-chemical treatment to remove the core, resulting in a hollow shell structure, which can be used in various devices such as image sensors, solar cells, and memory devices, utilizing atomic layer deposition and selective growth on peptide or organic self-organized materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nanoclusters are integrated into electronic devices using current techniques, then device functionality is enhanced, but control over size and spatial distribution becomes difficult
Solution Approach 1:
The patent uses organic self-assembled monolayers (SAMs) as intermediary templates that direct the formation and positioning of inorganic nanoclusters. The SAMs act as a mediator between the substrate and nanoclusters, enabling precise spatial distribution control while maintaining device functionality. The molecular-level organization of SAMs provides a template that guides nanocluster formation at specific locations.
Solution Approach 2:
The patent applies preliminary self-organization of organic molecules into ordered monolayers before nanocluster formation. This preliminary structuring creates a predefined pattern that controls subsequent nanocluster positioning and size, solving the manufacturing precision problem before the actual nanocluster integration occurs.
2Ease of manufacture
If high temperatures are used for fabrication, then electronic system integration is achieved, but organic scaffolds are damaged
Solution Approach 1:
The patent changes the material parameters by selecting organic scaffolds with high thermal stability that can withstand electronic fabrication temperatures. The molecular structure and composition of the organic materials are specifically chosen to maintain structural integrity at elevated temperatures, enabling both high-temperature processing and scaffold preservation.
3Reliability
If nanoclusters are used to enhance light absorption, then device performance improves, but compatibility with fabrication processes becomes problematic
Solution Approach 1:
The patent creates composite structures combining organic self-assembled monolayers with inorganic nanoclusters. This composite approach allows the organic component to provide temperature stability for fabrication compatibility while the inorganic nanoclusters provide enhanced light absorption properties. The synergistic combination resolves the contradiction between performance enhancement and process compatibility.
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 approach allows for the creation of nanoshells with precise control over size and distribution, enhancing light absorption and charge storage capabilities, and enabling integration into electronic devices without compromising the organic scaffolds, thus improving device performance.
Implementation Method 1
the coating is by atomic layer deposition
Implementation Method 2
applying non-chemical treatment to the core-shell nanostructure so as to at least partially remove the nanometric core
Data Source
AI summary
A method of fabricating a nanoshell is disclosed. The method comprises coating a nanometric core made of a first material by a second material, to form a core-shell nanostructure and applying non-chemical treatment to the core-shell nanostructure so as to at least partially remove the nanometric core, thereby fabricating a nanoshell. The disclosed nanoshell can be used in the fabrication of transistors, optical devices (such as CCD and CMOS sensors), memory devices and energy storage devices.