Nano Particle Collection Device with Noble Metal Coating
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Solution Overview
Problem
Current systems for detecting long-term exposure to inhalable nano particles, such as carbon nanotubes and graphene nanoplatelets, lack accuracy and are costly due to integrated analysis capabilities, which complicates distinguishing between target particles and other contaminants.
Innovation Solution
A collection device designed for continuous collection of nano particles, separate from analysis equipment, utilizing a spectrometer for accurate particle detection, featuring a filter plate or membrane with a noble metal coating for enhanced Raman scattering and a filter arrangement to separate target particles, allowing for precise analysis without built-in analysis tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a collection device integrates built-in analysis capabilities (spectrometer), then particle detection can be performed immediately and conveniently, but device complexity and cost increase significantly
Solution Approach 1:
The system is divided into two separate functional modules: a collection device for sampling particles and a separate spectrometer for analysis. This segmentation allows each component to be optimized independently, reducing the complexity of individual devices while maintaining overall system functionality.
Solution Approach 2:
The analysis function (spectrometer) is extracted from the collection device and placed as a separate unit. This extraction reduces the complexity and cost of the portable collection device while allowing high-precision analysis to be performed by the dedicated spectrometer instrument.
2Measurement precision
If a collection device integrates built-in analysis capabilities (spectrometer), then complete particle characterization can be achieved, but device cost increases significantly
Solution Approach 1:
The collection device and spectrometer are combined into an integrated system that achieves complete particle characterization. The collection device captures particles on a filter, and the spectrometer analyzes them, providing high measurement precision without requiring the expensive spectrometer to be built into the portable unit.
Solution Approach 2:
The filter in the collection device serves as an intermediary that captures particles for later analysis. This intermediary approach allows the collection device to focus solely on sampling while the spectrometer handles the expensive and complex analysis function, reducing overall system cost.
3Loss of time
If integrated analysis capabilities are included in the collection device, then immediate results are available, but difficulty in distinguishing target particles from contaminants increases
Solution Approach 1:
The collection device performs preliminary particle collection and concentration on a filter before analysis. This preliminary action prepares the sample by concentrating target particles and removing some contaminants, making subsequent spectral differentiation more accurate and efficient when the spectrometer analyzes the collected sample.
Data Source
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AI summary
Collection device (1) for collecting nano particles conveyed in a fluid (F) in order to determine the exposure to nano particles (N), wherein said collection device (1) comprises a fluid duct (2) having a fluid inlet (3) and a fluid outlet (4), a fluid propelling element (5) propelling said fluid (F) through the fluid duct (2) and a collection element (7) which is arranged in said fluid duct (2) for the collection of nano particles (N) conveyed in said fluid (F), wherein the collection element (7) comprises a collection surface (8) and an enhancement structure (9) which enhancement structure (9) is arranged in connection with said collection surface (8), wherein said nano particles (N) are deposited in the region of said collection surface (8) and said enhancement structure (9) and wherein said collection surface (8) with the enhancement structure (9) enhances the spectral properties of said nano particles (N) for a facile analysis of the amount of collected nano particles (N).