Quantum Dot Tagging for Liquid Sample Tracking
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Solution Overview
Problem
Accessing and managing the diverse information associated with biological liquid samples, particularly in remote or low-resource settings, is challenging due to the difficulty in retrieving, analyzing, and displaying information generated by different sources at various locations and times.
Innovation Solution
The use of quantum dots to create a chemical link between biological liquid samples and their digital information through fluorescence properties, employing a method called Nano Encoding Technology for Tracking of information in Liquid Samples (NETTALIS), which involves sample tagging with a unique quantum dot signature, reading the fluorescence emission spectrum, and deconvolving it into a database address to access associated information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum dots are used to create a chemical link between biological liquid samples and digital information, then sample tracking capability is improved, but device complexity increases
Solution Approach 1:
Quantum dots serve as intermediary agents that physically tag biological liquid samples while encoding digital information through their fluorescence properties. The quantum dots act as a mediator between the physical sample and the digital database, enabling reliable tracking without requiring complex direct communication systems between samples and information repositories.
Solution Approach 2:
The patent utilizes the fluorescence emission spectrum of quantum dots, which exhibits characteristic color/wavelength signatures based on quantum dot size and composition. By measuring and deconvolving these fluorescence spectra, the system decodes digital information embedded in the sample tags, enabling information retrieval through optical detection rather than complex electronic interfaces.
2Loss of information
If multiple quantum dot tracers are used to encode information, then information capacity increases, but measurement precision requirements increase
Solution Approach 1:
The patent divides information encoding into multiple discrete quantum dot tracer components, each contributing to the overall fluorescence spectrum. By segmenting the information capacity across multiple tracers with distinct emission wavelengths, the system increases total information capacity while the deconvolution algorithm separates and identifies each tracer's contribution, managing measurement precision requirements through spectral decomposition.
Solution Approach 2:
The patent transitions from single-parameter detection to multi-dimensional spectral analysis. Instead of measuring only intensity, the system analyzes the entire fluorescence emission spectrum across multiple wavelengths. This dimensional expansion allows multiple quantum dot tracers to be simultaneously detected and differentiated based on their unique spectral fingerprints, increasing information capacity while distributing measurement precision requirements across the spectral domain.
3Loss of time
If quantum dot tagging is performed at point of manufacture, then information retrieval speed is improved, but manufacturing complexity increases
Solution Approach 1:
The patent performs quantum dot tagging during the sample manufacturing or collection phase, rather than during analysis. By preliminarily attaching quantum dot encoders to samples at the point of manufacture and registering their fluorescence signatures in advance, the system enables rapid information retrieval during later use without requiring complex real-time encoding operations. This preliminary action shifts complexity to the manufacturing stage while enabling fast access during deployment.
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
Facilitates life-long sample tracking, multiple sample interrogation, identifies cross-contamination, and enhances sample management and data sharing, allowing for easy access to all relevant information for clinical diagnostics, food safety, and environmental monitoring.
Implementation Method 1
use of the fluorescence properties of quantum dots to create or provide a chemical link between biological liquid samples and their associated digital information
Data Source
AI summary
In the present invention, fluorescence properties of quantum dots are used to create or provide a chemical link between biological liquid samples and their associated digital information; thereby, facilitating an easy access and on-demand to all the information associated with the liquid biological sample.