Detachable Light Source Assembly for In-Situ TEM Stability
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Solution Overview
Problem
Existing sample holding devices for in-situ TEM studies of light-driven reactions often require external light sources or power sources, leading to cumbersome experimental preparation and instability due to mechanical disturbances from wire connections, with limited variability in environmental parameters.
Innovation Solution
A portable sample holding device with a detachable light source assembly that includes a main body, supporting structure, and focusing lens, allowing for independent operation and wireless control of the light source, enabling real-time replacement and adjustment of light sources without affecting the vacuum environment of the TEM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external light sources or power sources are used, then the sample holding device can perform light-driven reactions, but the experimental preparation becomes cumbersome and mechanical disturbances affect stability
Solution Approach 1:
The patent integrates the light source, power source, and control systems directly into the sample holding device holder, merging previously external components with the holder to eliminate wire connections and mechanical disturbances while maintaining light-driven reaction capabilities
Solution Approach 2:
The patent introduces a wireless communication module as an intermediary between the external controller and the light source, eliminating the need for physical wire connections and thereby removing the source of mechanical disturbances that affected observation stability
2Ease of operation
If external light sources are connected by wires, then the sample holding device can function, but mechanical disturbances are transmitted via wire connections affecting analysis stability
Solution Approach 1:
The patent replaces the mechanical wire connection system with a wireless communication system, substituting physical electrical connections with electromagnetic signal transmission to eliminate mechanical disturbances while maintaining full device functionality
3Device complexity
If a fixed light source is used, then the sample holding device operates simply, but the variability of environmental parameters is restricted
Solution Approach 1:
The patent transforms the static fixed light source into a dynamic, adjustable light source that can vary wavelength, intensity, and timing under wireless control, enabling environmental parameter variability while maintaining operational simplicity through centralized control
Solution Approach 2:
The patent implements the ability to change light source parameters (wavelength, intensity, pulse duration) on-demand through wireless communication, allowing environmental parameter variability without increasing operational complexity for the user
4Reliability
If the light source is integrated into the sample holding device, then wireless operation is achieved, but the device structure becomes more complex
Solution Approach 1:
The patent segments the holder into functional modules (light source module, power module, wireless communication module), allowing each component to be independently optimized and connected through standardized interfaces, which manages structural complexity while achieving wireless operation
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
The device provides stable and reliable in-situ observation of light-driven reactions with enhanced variability in environmental parameters, reducing mechanical disturbances and facilitating the use of different light sources for precise experimentation.
Implementation Method 1
a sample holding device for studying light-driven reactions
Implementation Method 2
allow an electron beam to irradiate the sample located inside an analytical area of the holding part
Data Source
AI summary
A sample holding device for studying light-driven reactions and a sample analysis method using the same are disclosed. The sample holding device comprises a main body, a supporting structure and a light source assembly. The main body has a channel which has a first end and a second end opposite to the first end, and a focusing lens which is located on the second end. The supporting structure is located on one end of the main body for sample supporting. The light source assembly is detachably disposed on the other end opposite to the end which is disposed with the supporting structure. The light source assembly emits a light beam into the first end of the channel. The light beam then irradiates the sample which locates on the supporting structure after passing through the focusing lens.