Non-resonant Two-Photon Absorption Recording Material
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current non-resonant two-photon absorption recording materials lack high humidity/heat resistance and sufficient recording/readout characteristics, especially when using recording light with wavelengths shorter than 700 nm for forming smaller pits.
Innovation Solution
A non-resonant two-photon absorption recording material incorporating a polymer compound with specific structures, such as those represented by formulas (1) to (4), which includes polystyrene, polyacrylate, or polymethacrylate as the main chain, and a copolymer component, along with a refractive index or fluorescence intensity-modulating material, to enhance recording performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If non-resonant two-photon absorption recording materials are used with shorter wavelengths (shorter than 700 nm) to achieve higher recording density and smaller pits, then recording density is improved, but humidity/heat resistance deteriorates
Solution Approach 1:
The patent employs composite materials by combining specific polymer compounds (polystyrene, polyacrylate, or polymethacrylate main chains with copolymer components) with refractive index or fluorescence intensity-modulating materials. This composite structure enables the material to simultaneously achieve high recording density through non-resonant two-photon absorption at shorter wavelengths and maintain high humidity/heat resistance, resolving the technical contradiction between recording precision and environmental stability.
2Manufacturing precision
If non-resonant two-photon absorption is used to achieve spatial resolution enhancement and three-dimensional recording, then manufacturing precision is improved, but the material requires specific structural complexity
Solution Approach 1:
The patent applies local quality by designing polymer compounds with specific local structural features: main chains consisting of polystyrene, polyacrylate, or polymethacrylate with copolymer components containing electron-donating groups and electron-withdrawing groups at specific positions. This localized structural design enables non-resonant two-photon absorption capability and spatial resolution enhancement while maintaining overall material processability and reducing unnecessary structural complexity.
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
The solution enables high humidity/heat resistance and improved recording density with the ability to perform non-resonant two-photon absorption using shorter wavelengths, ensuring effective readout and recording capabilities.
Implementation Method 1
In the case where the two-photon absorption occurs in the energy region having no (linear) absorption band of the compound, this is called non-resonant two-photon absorption
Implementation Method 2
a refractive index or fluorescence intensity-modulating material, to enhance recording performance
Data Source
AI summary
The present invention provides a non-resonant two-photon absorption recording material containing a non-resonant polymer two-photon absorption compound, and the non-resonant two-photon absorption recording material wherein the main chain of the non-resonant polymer two-photon absorption compound contains at least one member selected from polystyrene, polyacrylate, polymethacrylate-polyester, polyurethane, polyether and polyimide, and also provides an optical information recording medium having a recording layer containing the recording material.