Coherent Optical Mapping of Nanoprobes
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Solution Overview
Problem
Current super-resolved fluorescence microscopy techniques, such as PALM and STORM, face limitations in temporal resolution due to their reliance on isolating fluorescent emission events in time, making them unsuitable for dynamic samples and restricted to imaging a limited number of simultaneously colored dyes, which hampers spatial resolution and throughput.
Innovation Solution
The method involves using spectrally distinguishable nanoprobes that are illuminated with an electromagnetic wave, detecting and spectrally associating scattered light to map their positions in the spectral domain, allowing for simultaneous high-resolution imaging of multiple probes beyond the diffraction limit, thereby overcoming the temporal resolution constraints of traditional methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PALM/STORM methods are used to improve spatial resolution by isolating fluorescent emission events in time, then spatial resolution is improved, but temporal resolution deteriorates and imaging speed slows down
Solution Approach 1:
The patent transitions from temporal separation to spectral separation by utilizing the spectral dimension. Instead of isolating fluorescent events in time, the method uses nanoprobes with distinguishable spectral responses to separate and identify multiple probes simultaneously in the spectral domain, enabling parallel acquisition of multiple targets without temporal sequencing.
Solution Approach 2:
The patent changes the separation parameter from temporal to spectral. By using nanoprobes with distinct spectral characteristics (different scattering spectra) instead of temporally separated fluorescent events, the method achieves multi-target imaging with improved temporal resolution while maintaining super-resolution spatial mapping.
2Productivity
If multiple fluorescent dyes are imaged simultaneously to improve throughput, then imaging efficiency is improved, but spectral overlap increases and resolution deteriorates
Solution Approach 1:
The patent segments the spectral response of each nanoprobe into distinguishable characteristics. By designing nanoprobes with unique spectral fingerprints (different scattering spectra), the method enables clear separation and identification of multiple probes simultaneously, avoiding the spectral overlap problems that limit conventional multi-color fluorescence imaging.
3Ease of operation
If conventional optical techniques are used to image subcellular structures, then the system is simple to operate, but spatial resolution deteriorates below the diffraction limit
Solution Approach 1:
The patent replaces fluorescent emission detection with coherent scattering detection. Instead of relying on fluorescent probes and complex temporal isolation mechanisms, the method uses the coherent scattering properties of nanoprobes, which can be detected with simpler optical systems while achieving super-resolution through spectral analysis of scattered light.
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
This approach enables rapid super-resolved mapping of nanoprobes with improved spatial and temporal resolution, enabling the imaging of dynamic samples and increasing the number of simultaneously imaged dyes, thus enhancing imaging efficiency and precision.
Implementation Method 1
mapping of nanoprobes on the basis of coherent scattering
Data Source
AI summary
Methods and computer program products for super-resolution mapping of nanoprobes having spectrally distinguishable coherent scattering properties. A sample containing a plurality of nanoprobes is illuminated with broadband light, and coherent scattering by the nanoprobes is detected. Scattered light is spectrally associated with respective nanoprobes, allowing a position associated with each nanoprobe to be mapped.