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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

1.1K
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,...
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Temperature Measurement Sites01:14

Temperature Measurement Sites

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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...
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Thermosensation01:43

Thermosensation

30.8K
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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Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
612
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

5.3K
Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
5.3K
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

636
Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
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Fabrication and Testing of Photonic Thermometers
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Tb3+-based multi-mode optical ratiometric thermometry.

Zixuan Zhang1, Fei Li2, Yuanbo Yang1

  • 1Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China. zrx@hbu.edu.cn.

Physical Chemistry Chemical Physics : PCCP
|March 21, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel multi-mode luminescence ratiometric thermometry using terbium-doped calcium tungstate. This method offers flexible temperature sensing with both conventional and single-band strategies for enhanced optical thermometry applications.

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Area of Science:

  • Materials Science
  • Optical Thermometry
  • Luminescence Spectroscopy

Background:

  • Luminescence ratiometric thermometry, utilizing dual excitations or single excitation with dual emissions, is increasingly popular for temperature sensing.
  • Developing multi-mode ratiometric thermometry remains a significant challenge in the field.

Purpose of the Study:

  • To report a novel multi-mode temperature measurement method based on photoinduced luminescence.
  • To demonstrate the feasibility of both luminescence intensity ratio (LIR) and single-band ratiometric (SBR) strategies in a single material.

Main Methods:

  • Utilized low-cost and easily prepared terbium-doped calcium tungstate (Tb3+ in CaWO4).
  • Investigated temperature-dependent luminescence emissions from Tb3+ 5D4 and 5D3 energy levels.
  • Employed both conventional LIR and single-band ratiometric (SBR) approaches for thermometry.

Main Results:

  • Achieved multi-mode ratiometric thermometry, demonstrating both LIR and SBR strategies.
  • Developed an LIR thermometer with excitation-wavelength-dependent sensitivity.
  • Constructed an SBR thermometer with a maximum relative sensitivity of 1.83% K-1 at 573 K.

Conclusions:

  • Successfully developed a versatile multi-mode optical ratiometric thermometer using Tb3+-doped calcium tungstate.
  • The findings pave the way for designing advanced optical thermometers with tunable sensing capabilities.
  • This work is expected to inspire further research into multi-mode ratiometric thermometry.