UV-C Detection Material Using Composite Oxide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ultraviolet detection materials fail to distinctly detect the UV-C wavelength region due to excitation by electromagnetic waves other than UV-C, making it difficult to accurately detect the UV-C's sterilization and virus inactivation effects.
Innovation Solution
An ultraviolet detection material comprising a composite oxide of aluminum, strontium, cerium, lanthanum, and manganese, combined with an organic polymer, which is not excited by wavelengths longer than 310 nm and specifically excited by wavelengths equal to or shorter than 310 nm, emitting light in the visible range, thereby allowing distinct detection of UV-C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional ultraviolet detection materials are used, then they can detect ultraviolet light, but they cannot distinctly detect only UV-C wavelength region because they are excited by electromagnetic waves other than UV-C
Solution Approach 1:
The patent changes the excitation wavelength parameter by selecting a fluorescent material whose excitation peak is positioned at 280 nm or shorter wavelengths. This parameter change ensures that the material is excited primarily by UV-C radiation and not by longer wavelength UV-A or UV-B radiation, thereby achieving wavelength-specific detection precision
Solution Approach 2:
The patent uses a composite fluorescent material comprising specific inorganic phosphors (such as BaMgAl10O17:Eu, Sr2Si5N8:Eu, or CaAlSiN3:Eu) combined with organic fluorescent materials. This composite approach allows tuning of the excitation characteristics to achieve selective UV-C detection while maintaining high fluorescence emission intensity in the visible range
2Reliability
If conventional ultraviolet detection materials are used, then they emit fluorescence, but they cannot provide accurate detection of UV-C sterilization and virus inactivation effects
Solution Approach 1:
The patent changes the emission wavelength parameter by selecting fluorescent materials that emit light in the visible range (480-700 nm) when excited by UV-C. This parameter change ensures that the detected fluorescence signal corresponds specifically to UV-C exposure, providing reliable information about UV-C sterilization and virus inactivation effects without contamination from other wavelength regions
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 precise detection of UV-C by emitting light in the visible range when exposed to UV-C, allowing for effective visualization of UV-C's presence and impact on living organisms and viruses without requiring additional energy for detection, facilitating convenient and cost-effective monitoring.
Implementation Method 1
is excited by an electromagnetic wave having a wavelength equal to or shorter than 310 nm, thereby emitting light having a peak of an emission wavelength in 480 nm or longer and 700 nm or shorter
Data Source
AI summary
An ultraviolet detection material includes a composite oxide including aluminum, strontium, cerium, lanthanum and manganese, and an organic polymer. The ultraviolet detection material is not excited by an electromagnetic wave having a wavelength longer than 310 nm and is excited by an electromagnetic wave having a wavelength equal to or shorter than 310 nm, thereby emitting light having a peak of an emission wavelength in 480 nm or longer and 700 nm or shorter.