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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

3.8K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
3.8K
Thermosensation01:43

Thermosensation

34.5K
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...
34.5K
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

2.0K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
2.0K

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Related Experiment Video

Updated: Mar 11, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

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High Sensitive Temperature Sensor Using a Liquid-core Optical Fiber with Small Refractive Index Difference Between

Yonghao Xu1, Xianfeng Chen2, Yu Zhu1

  • 1Department of Physics, the State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, 800, Dong Chuan Road, Shanghai, 200240, China.

Sensors (Basel, Switzerland)
|November 24, 2016
PubMed
Summary
This summary is machine-generated.

A novel liquid-core optical fiber sensor effectively measures environmental temperature. This sensor utilizes a toluene and chloroform mixture, achieving high sensitivity and a tunable temperature range for practical applications.

Keywords:
Temperature sensorliquid-core fibermixturesensitivity

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Area of Science:

  • Optoelectronics
  • Fiber Optics
  • Chemical Sensing

Background:

  • Accurate temperature sensing is crucial across various scientific and industrial fields.
  • Traditional sensors face limitations in specific environments or sensitivity requirements.
  • Optical fiber sensors offer potential advantages due to their remote sensing capabilities and immunity to electromagnetic interference.

Purpose of the Study:

  • To demonstrate an intensive temperature sensor utilizing a liquid-core optical fiber.
  • To investigate the temperature sensing performance of a liquid-core fiber filled with a toluene and chloroform mixture.
  • To validate experimental findings through theoretical modeling.

Main Methods:

  • Fabrication of a liquid-core optical fiber by filling the core with a toluene-chloroform mixture.
  • Matching the refractive indices of the liquid core and the fiber cladding.
  • Experimental measurement of temperature sensitivity and range.
  • Theoretical simulation using a dielectric-clad liquid core fiber model.

Main Results:

  • Achieved a temperature sensitivity of approximately 5 dB/K.
  • Demonstrated a tunable temperature measurement range from 20 °C to 60 °C.
  • Experimental results showed good agreement with simulation predictions.

Conclusions:

  • The liquid-core optical fiber sensor is effective for intensive temperature measurements.
  • The proposed sensor design offers a tunable and sensitive temperature sensing solution.
  • Theoretical modeling accurately predicts the performance of such optical fiber sensors.