Carbon Nanotube Light Intensity Sensor with Thermal Control
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Solution Overview
Problem
Current methods for measuring light intensity distribution face challenges with sensitivity and cost, as photonic sensors are expensive and operate poorly at room temperature, while thermal sensors are low-cost but have low sensitivity and slow response times.
Innovation Solution
A system utilizing a carbon nanotube array on a substrate with a cooling device to maintain constant temperature, combined with a reflector and imaging element, which uses the carbon nanotubes' heat conduction properties to accurately measure light intensity distribution, allowing for high sensitivity and operation at room temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a photonic sensor is used to measure light intensity distribution, then sensitivity and response speed are improved, but cost increases and the sensor cannot operate at room temperature
Solution Approach 1:
The patent replaces expensive photonic sensors with a low-cost thermal sensor that can operate at room temperature. The thermal sensor, while traditionally less sensitive, is made sufficiently sensitive through the carbon nanotube array enhancement, achieving the required measurement precision without the high cost and temperature constraints of photonic sensors.
Solution Approach 2:
The patent uses a composite structure combining carbon nanotubes with the thermal sensor substrate. The carbon nanotube array is integrated with the thermal sensor to enhance its light absorption and thermal conversion capabilities, creating a hybrid sensor that achieves photonic-level sensitivity while maintaining thermal sensor characteristics (low cost, room temperature operation).
2Ease of manufacture
If a thermal sensor is used to measure light intensity distribution, then cost is reduced and room temperature operation is enabled, but sensitivity and response speed deteriorate
Solution Approach 1:
The patent maintains the use of a thermal sensor platform (cheap, room temperature operable) but enhances its performance through the carbon nanotube array. The thermal sensor remains the base architecture for cost-effectiveness and temperature operation, while the carbon nanotubes provide the sensitivity enhancement needed to match or exceed photonic sensor performance.
Solution Approach 2:
The carbon nanotube array is composite-integrated with the thermal sensor substrate to create an enhanced thermal sensor system. The carbon nanotubes form a network that improves light absorption efficiency and thermal coupling, thereby enhancing the sensor's sensitivity and response speed while preserving the low-cost and room-temperature advantages of the thermal sensor platform.
3Measurement precision
If a carbon nanotube array with cooling device is used to maintain constant temperature, then measurement precision and resolution are improved, but device complexity increases
Solution Approach 1:
The cooling device controls and stabilizes the temperature parameter of the carbon nanotube array to maintain constant operating conditions. By actively managing the temperature parameter, the system achieves high measurement precision and resolution in detecting light intensity distribution, while the temperature control mechanism is integrated to minimize overall system complexity.
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 system achieves high sensitivity and resolution in measuring light intensity distribution, capable of distinguishing details greater than 10 microns, while being cost-effective and operable at room temperature, improving the accuracy and efficiency of light intensity measurement.
Implementation Method 1
utilizing a carbon nanotube array on a substrate with a cooling device to maintain constant temperature, combined with a reflector and imaging element, which uses the carbon nanotubes' heat conduction properties to accurately measure light intensity distribution
Implementation Method 2
a cooling device to maintain constant temperature
Data Source
AI summary
A system for measuring light intensity distribution is provided and set in a vacuum environment. The system for measuring light intensity distribution comprises a carbon nanotube array located on a surface of a substrate, a reflector, an imaging element and a cooling device. The substrate is cooled by the cooling device to make a contacting surface between the substrate and the carbon nanotube array maintain a constant temperature. The carbon nanotube array is irradiated by a light source to make the carbon nanotube array radiate a visible light, and the substrate is continuously cooled to make the contact surface between the substrate and the carbon nanotube array maintain the constant temperature. The visible light is reflected with the reflector. The visible light reflected by the reflector is imaged with the imaging element to obtain the light intensity distribution of the light source.