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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,...
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...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

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Related Experiment Video

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Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management
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High-performance flexible dual strain-temperature sensor based on a sandwich-architecture hydrogel.

Du Ding1, Fang Ren1, Yameng Li1

  • 1The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an, 710048, China. renfang0824@163.com.

Journal of Materials Chemistry. B
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Summary

This study developed a novel hydrogel sensor with excellent mechanical and thermal sensitivity for skin-mimicking applications. The durable, flexible sensor effectively monitors body movements and temperature fluctuations.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Sensor Technology

Background:

  • Developing multifunctional hydrogel sensors for skin-mimicking applications is challenging.
  • Existing sensors often struggle to balance skin compatibility, mechanical/thermal sensitivity, and durability.
  • High-performance sensors are crucial for wearable electronics and physiological monitoring.

Purpose of the Study:

  • To construct a hydrogel sensor with synergistic mechanical and thermal dual-sensitivity.
  • To achieve multifunctionalities, including high performance, durability, and skin compatibility.
  • To explore its potential in physiological monitoring applications.

Main Methods:

  • Fabrication of a sandwich architecture hydrogel sensor using a poly(acrylic acid)-polyacrylamide interpenetrating network.
  • Incorporation of poly(N-isopropylacrylamide) for thermosensitivity and a PEDOT:PSS/graphene interlayer for enhanced conductivity.
  • Evaluation of mechanical/thermal sensitivities, durability, and conductivity through performance tests.

Main Results:

  • The hydrogel sensor demonstrated high mechanical sensitivity (gauge factor up to 25.76) and exceptional durability (>5000 cycles).
  • It exhibited pronounced electrical conductivity and outstanding thermal sensitivity (temperature coefficient up to 8.33 pph °C⁻¹).
  • The sensor successfully monitored electrical signals from human joint/torso movements and tracked body temperature fluctuations.

Conclusions:

  • The developed hydrogel sensor offers a promising solution for skin-mimicking applications requiring dual mechanical and thermal sensing.
  • Its high performance, durability, and sensitivity position it as a valuable tool for physiological inflammation monitoring and body temperature tracking.
  • This work advances the development of multifunctional wearable sensors for health monitoring.