Multi-Response Luminescent Composition via Photochromic Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional luminescent materials exhibit only a single response to a single energy source, limiting their applications in security, laser, and optical technologies, as they lack the ability to controllably switch between different responses to the same excitation radiation.
Innovation Solution
A composition comprising a host material, an emissive material, and an emission modifier that undergoes a transformation from a first response to a second response upon exposure to a second electromagnetic radiation, and can be regenerable back to the first response, allowing for multiple responses to the same excitation radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional luminescent materials are used, then the material structure is simple and easy to manufacture, but the material can only provide a single response to excitation radiation, limiting application versatility
Solution Approach 1:
The patent applies composite materials by combining a host material with multiple distinct emissive materials (e.g., first emissive material and second emissive material) within a single composition. This composite structure enables the material to exhibit multiple luminescent responses (different wavelengths or colors) to the same excitation radiation, directly resolving the contradiction between versatility and complexity.
Solution Approach 2:
The invention achieves multi-functionality by designing a luminescent composition that can provide multiple different responses (emissions at different wavelengths) to a single excitation source. The composition acts as a universal luminescent material that performs multiple functions simultaneously, eliminating the need for separate materials for different applications.
2Ease of operation
If conventional luminescent materials are used, then the material composition is simple, but the material cannot be controllably switched between different responses, reducing operational flexibility
Solution Approach 1:
The patent implements dynamics by introducing a switchable emissive material that can controllably transition between different emission states. This dynamic property allows the luminescent composition to switch between providing a first response and a second response to the same excitation radiation, enabling operational flexibility without complex external switching mechanisms.
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 controllable and repeatable switching between different luminescent responses, enhancing security features and applications in optical computing, communication, and imaging by providing multiple responses to a single energy source.
Implementation Method 1
Luminescent materials may, for example, convert one wavelength to a second wavelength whether ultraviolet to visible, ultraviolet to infrared, visible to visible, visible to infrared, infrared to infrared, or infrared to visible.
Implementation Method 2
a first response to a first electromagnetic radiation and, after intermediate exposure to a second electromagnetic radiation, a second response to the first electromagnetic radiation
Data Source
AI summary
The present invention relates to a composition having a first response to a first electromagnetic radiation and, after intermediate exposure to a second electromagnetic radiation, a second response to the first electromagnetic radiation, different from the first response. In one aspect, the composition exhibits a regenerated first response to the first electromagnetic radiation after exposure to a third electromagnetic radiation.