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Related Concept Videos

Thermosensation01:43

Thermosensation

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Load-insensitive temperature sensor based on azobenzene-chloroform-solution-filled microstructured optical fiber.

Chunxue Yang, Hao Zhang, Yinping Miao

    Optics Letters
    |December 18, 2013
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    Summary

    This study demonstrates a novel fiber-optic sensor using Dispersed Yellow 7 infiltrated microstructured optical fiber for highly sensitive, load-insensitive temperature sensing. The compact device shows excellent temperature sensitivity while ignoring axial load variations.

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    Fabrication and Testing of Photonic Thermometers
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    Area of Science:

    • Optoelectronics
    • Materials Science
    • Sensor Technology

    Background:

    • Microstructured optical fibers (MOFs) offer unique light-guiding properties.
    • Functionalizing MOFs with organic dyes can create novel sensing capabilities.
    • Developing robust, high-sensitivity sensors for environmental monitoring is crucial.

    Purpose of the Study:

    • To investigate the temperature and axial load responses of a Dispersed Yellow 7 infiltrated solid-core MOF.
    • To explore the potential of this device for load-insensitive temperature sensing.
    • To evaluate the spectral characteristics and sensitivity of the fabricated fiber-optic sensor.

    Main Methods:

    • Infiltration of a solid-core MOF with a Dispersed Yellow 7 and chloroform solution.
    • Experimental investigation of transmission dips under varying temperature and axial load.
    • Analysis of the spectral characteristics of the induced transmission dips.

    Main Results:

    • The infiltrated MOF exhibited several transmission dips with distinct responses to temperature and axial load.
    • The observed dips were highly sensitive to temperature variations.
    • The sensor demonstrated insensitivity to applied axial load, indicating load-insensitive operation.

    Conclusions:

    • A compact, high-sensitivity fiber-optic temperature sensor was successfully fabricated.
    • The device leverages Dispersed Yellow 7 infiltrated MOF for selective temperature monitoring.
    • The sensor's immunity to electrical perturbation and insensitivity to axial load make it suitable for specialized applications.