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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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,...
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
Temperature Measurement Sites01:14

Temperature Measurement Sites

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...
Thermosensation01:43

Thermosensation

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...
Gas Thermometers and the Kelvin Scale01:22

Gas Thermometers and the Kelvin Scale

The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

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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Related Experiment Video

Updated: May 7, 2026

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

Nanowire thermometers.

Peng Peng1, Zhihua Su, Zhihong Liu

  • 1Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA. jbao@uh.edu.

Nanoscale
|September 24, 2013
PubMed
Summary
This summary is machine-generated.

We developed novel nanowire temperature reporters using metal alloys. These reporters change electrical resistance when heated above their melting points, enabling convenient temperature measurement.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physical Chemistry

Background:

  • Accurate temperature monitoring is crucial in various scientific and industrial applications.
  • Existing temperature sensing methods may have limitations in certain environments or at nanoscale.

Purpose of the Study:

  • To design and demonstrate a new type of temperature reporter based on nanowires.
  • To explore the use of metal alloys with tunable melting points for temperature sensing applications.

Main Methods:

  • Fabrication of nanowires using metal alloys within anodic aluminum oxide nanopores via mechanical pressure injection.
  • Inducing Rayleigh instability in nanowires by exposing them to temperatures above their melting points.
  • Measuring the electrical resistance of the nanowires to determine temperature.

Main Results:

  • Successfully created nanowire temperature reporters capable of indicating temperature changes.
  • Observed nanowire breakup into nanorods above melting points due to Rayleigh instability.
  • Demonstrated a correlation between electrical resistance changes and temperature exposure.

Conclusions:

  • Nanowire temperature reporters offer a viable method for convenient temperature probing.
  • The design allows for a wide range of temperatures to be measured by selecting appropriate metal alloys.
  • This technology has potential applications in microscale thermal analysis and monitoring.