Modifiable Optical Indicator for Surface Application Control
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Solution Overview
Problem
Existing surface treatment compositions lack the ability to reliably determine the elapsed time since application or changes in surface conditions, such as contamination, due to the use of permanent indicators that do not change over time.
Innovation Solution
A modifiable indicator composition comprising organic, organometallic, or inorganic compounds with conjugated binding systems, which alter optical properties in response to external influences like electromagnetic radiation, pH changes, temperature, or biological contact, allowing for time-based application control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a permanent indicator is used, then the indicator provides stable optical properties, but it cannot determine the elapsed time since application or changes in surface conditions
Solution Approach 1:
The patent applies the dynamics principle by using indicators that change their optical properties over time or in response to environmental changes. Instead of a static permanent indicator, the invention employs modifiable indicators whose emission and absorption properties evolve, allowing them to convey temporal information and surface condition changes while maintaining reliable optical detection capabilities.
Solution Approach 2:
The patent implements parameter changes by selecting indicators with different stability characteristics. The indicator's optical parameters (emission intensity, absorption spectrum) are deliberately chosen to change in response to time, pH, temperature, or other environmental factors, enabling the system to provide both stable baseline detection and dynamic information about elapsed time or contamination events.
2Loss of information
If a modifiable indicator is used, then the indicator can provide information about elapsed time or surface changes, but it requires selection of compounds with specific stability characteristics
Solution Approach 1:
The patent manages the complexity of indicator selection by systematically categorizing indicators based on their modification triggers (pH-sensitive, temperature-sensitive, time-dependent, oxidation-sensitive). This structured approach to parameter changes allows practitioners to select appropriate indicators for specific application scenarios without being overwhelmed by the full range of possible compound variations.
Solution Approach 2:
The patent reduces selection complexity by identifying indicator compounds that can respond to multiple environmental parameters simultaneously. For example, certain organic compounds with conjugated binding systems can exhibit both pH-dependent and time-dependent optical changes, allowing a single indicator to provide multiple types of information and simplifying the overall composition formulation.
3Device complexity
If the indicator is introduced only during application, then the composition maintains simplicity, but it limits the ability to assess pre-application surface conditions
Solution Approach 1:
The patent applies preliminary action by incorporating the modifiable indicator into the composition before application, allowing the indicator to begin its modification process immediately upon contact with the surface. This enables the indicator to capture pre-application surface conditions (such as existing contamination or pH levels) and provide a baseline for comparison with post-application conditions, all while maintaining composition simplicity.
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 reliable application control by changing emission and absorption properties over time, facilitating the determination of elapsed time since application or surface changes, thereby ensuring proper usage and quality assessment without requiring technical aids.
Implementation Method 1
the indicator is modifiable and comprises at least one organic compound having a conjugated binding system, an organometallic compound or an inorganic compound... Preferably, the at least one organic compound having a conjugated binding system or the organometallic compound is a fluorophore
Implementation Method 2
the indicator is modified by a chemical conversion, such as an oxidation, a photooxidation
Implementation Method 3
the indicator can change its optical properties, e.g., its emission and/or absorption properties, over time or by an external influence... Preferably, the indicator can be modified by a pH change, a temperature change
Implementation Method 4
the indicator is modifiable and comprises at least one organic compound having a conjugated binding system... Conjugated binding systems have an overlap of π bonds
Implementation Method 5
the indicator is modifiable and comprises at least one organic compound having a conjugated binding system... Preferably, the at least one organic compound having a conjugated binding system or the organometallic compound is a fluorophore
Implementation Method 6
The lanthanum oxide can particularly preferably be doped. Particularly preferably, the lanthanum oxide can be doped with ytterbium... Lanthanum oxide doped with ytterbium is a downconverter
Implementation Method 7
Lanthanum oxides doped with ytterbium and erbium or ytterbium and holmium or ytterbium and thulium are both upconverters and downconverters
Data Source
AI summary
The present invention relates to an application control composition comprising an indicator, wherein the indicator is modifiable and comprises at least one organic compound having a conjugated binding system, an organometallic compound or an inorganic compound. It further relates to an application control method and to the use of the composition according to the invention.