Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

1.9K
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...
1.9K
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,...
1.1K
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

638
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...
638
Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

624
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...
624
Assessing Body Temperature - Axilla01:14

Assessing Body Temperature - Axilla

634
Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
634

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Harnessing the power of ANN for early detection and prediction of oral cancer.

Frontiers in artificial intelligence·2026
Same author

Design and Development of a Fiber Bragg Grating Sensor System for Hand Function Monitoring in Rehabilitation.

Journal of biophotonics·2025
Same author

Development and clinical validation of an orientation-sensor-integrated assistive device for drinking task retraining in stroke rehabilitation.

Journal of hand therapy : official journal of the American Society of Hand Therapists·2025
Same author

An FBG-based optical pressure sensor for the measurement of radial artery pulse pressure.

Journal of biophotonics·2024
Same author

Design and analysis of a fiber Bragg grating-based foot pressure assessment system.

Journal of biophotonics·2024
Same author

Highly Sensitive Bimetallic-Metal Nitride SPR Biosensor for Urine Glucose Detection.

IEEE transactions on nanobioscience·2023

Related Experiment Video

Updated: Aug 12, 2025

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

5.9K

Highly sensitive temperature sensor using one-dimensional Bragg Reflector for biomedical applications.

Ranjith B Gowda1,2, Preeta Sharan3, Saara K1

  • 1Department of Electronics & Communication Engineering, SOE, Dayananda Sagar University, Bangalore, India.

Biomedizinische Technik. Biomedical Engineering
|January 30, 2023
PubMed
Summary

This study proposes a highly sensitive temperature sensor using a multi-layer Bragg Reflector (BR) structure. The sensor utilizes the refractive index variation of germanium with temperature to detect temperatures from 100 to 550 K.

Keywords:
1D photonic crystalBragg Reflectorcharacteristic matrixmulti-layer structurerefractive indextemperature sensor

More Related Videos

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

12.1K
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

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

Published on: January 7, 2019

7.2K

Related Experiment Videos

Last Updated: Aug 12, 2025

Fabrication and Testing of Photonic Thermometers
08:44

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

5.9K
Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

12.1K
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

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

Published on: January 7, 2019

7.2K

Area of Science:

  • Optoelectronics and Photonics
  • Materials Science
  • Sensor Technology

Background:

  • Accurate temperature sensing is crucial across various scientific and industrial applications.
  • Developing novel sensor designs with enhanced sensitivity and wide operating ranges remains an active research area.
  • Bragg Reflectors (BR) offer tunable optical properties suitable for sensing applications.

Purpose of the Study:

  • To theoretically investigate a multi-layer Bragg Reflector (BR) structure for designing a highly sensitive temperature sensor.
  • To analyze the sensing characteristics of the proposed sensor over a wide temperature range (100-550 K).
  • To explore the influence of structural parameters, such as the number of BR layers and defect cavity length, on sensor performance.

Main Methods:

  • Utilized the Characteristic-Matrix (CM) mathematical tool for sensor design and analysis.
  • Modeled a 1D Distributed Bragg Reflector (DBR) multi-layer structure with germanium and air as alternating dielectric layers.
  • Introduced a central defect layer to create a resonating mode for incident electromagnetic waves.

Main Results:

  • Observed a shift in the resonating mode wavelength with temperature variations, indicating sensing capability.
  • Determined key performance metrics: RI sensitivity (2.323 μm/RIU), Q-factor (115,000), temperature sensitivity (1.18 nm/K), and detection limit (9.024 × 10⁻⁶ RIU).
  • Confirmed that defect cavity length and the number of BR layers significantly impact the sensor's sensing parameters.

Conclusions:

  • The proposed multi-layer BR structure is theoretically validated as a highly sensitive temperature sensor.
  • The sensor demonstrates effective temperature detection over a broad range by exploiting the thermo-optic properties of germanium.
  • Structural optimization of BR layers and defect cavity length can further enhance sensor performance.