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

Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

1.3K
In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
1.3K
Mechanism of Breathing II: Expiration01:23

Mechanism of Breathing II: Expiration

830
The Physiology of Expiration: A Seamless Respiratory Process
Expiration, or exhaling, is a complex physiological process that begins as the inspiratory muscles begin to relax. This relaxation triggers a series of events that epitomize the efficiency of the respiratory system.
Mechanism of Expiration:
830
Breathing01:05

Breathing

56.9K
The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
56.9K
Pulmonary Ventilation: Inhalation01:24

Pulmonary Ventilation: Inhalation

2.6K
Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
Boyle's law becomes particularly pertinent when examining respiratory...
2.6K
Respiration and Gaseous Exchange01:20

Respiration and Gaseous Exchange

1.3K
The intricate interplay between the cardiovascular and respiratory systems is crucial for efficiently transporting respiratory gases throughout the body. Let us explore the cardiovascular system's multifaceted functions, emphasizing its pivotal role in gas exchange.
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves...
1.3K
Mechanism of Breathing I: Inspiration01:30

Mechanism of Breathing I: Inspiration

1.1K
Introduction to Inspiration: The Respiratory System in Action
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...
1.1K

You might also read

Related Articles

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

Sort by
Same author

An investigation of the abnormalities in the microbiome‑gut‑brain axis in betel quid chewers.

Scientific reports·2026
Same author

Hydrogeochemical Signatures, Genetic Mechanisms, and Sustainable Utilization Potential of Groundwater Resources in a Typical Arid Alluvial-Proluvial Plain of the Closed Qaidam Basin on Tibetan Plateau.

Water environment research : a research publication of the Water Environment Federation·2026
Same author

Integrated physiological and multi-omics analyses identify a <i>SmWRKY4</i>-<i>SmAPX2</i> regulatory module associated with cold adaptation in <i>Sapindus mukorossi</i>.

Frontiers in plant science·2026
Same author

Proteomic and Clinical Characterization of Active vs. Quiescent Pterygium With Elevated Thrombospondin-1.

Translational vision science & technology·2026
Same author

Identification and validation of STEAP3 as a ferroptosis-related biomarker in heart failure.

Frontiers in cardiovascular medicine·2026
Same author

Predicting toxicities and deriving water quality criteria for antimony based on quantitative structure-activity relationship and water properties.

Environmental pollution (Barking, Essex : 1987)·2026

Related Experiment Video

Updated: May 16, 2025

Breath Collection from Children for Disease Biomarker Discovery
06:09

Breath Collection from Children for Disease Biomarker Discovery

Published on: February 14, 2019

6.9K

Oral Exhalation H2S Sensor Based on Cu2O/ZnO Heterostructures.

Huijuan Chen1, Li Lv1, Kaifeng Xue1

  • 1School of Physics and Electrical Engineering, Linyi University, Linyi 276000, China.

ACS Sensors
|April 2, 2025
PubMed
Summary

Researchers developed novel copper oxide/zinc oxide (Cu2O/ZnO) heterostructures for highly sensitive hydrogen sulfide (H2S) detection in exhaled breath at room temperature. This breakthrough enables portable breath sensors for chronic disease monitoring.

Keywords:
2D electrodepositionCu2O/ZnO heterostructuresH2Sgas sensorlow temperature

More Related Videos

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
08:25

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship

Published on: January 8, 2019

9.3K
Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
07:52

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department

Published on: January 29, 2011

16.1K

Related Experiment Videos

Last Updated: May 16, 2025

Breath Collection from Children for Disease Biomarker Discovery
06:09

Breath Collection from Children for Disease Biomarker Discovery

Published on: February 14, 2019

6.9K
Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
08:25

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship

Published on: January 8, 2019

9.3K
Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
07:52

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department

Published on: January 29, 2011

16.1K

Area of Science:

  • Materials Science
  • Chemical Sensors
  • Nanotechnology

Background:

  • Detecting hydrogen sulfide (H2S) in exhaled breath for health assessment is challenging due to the need for portable, room-temperature sensors.
  • Existing sensors often struggle with sensitivity and performance at lower temperatures.

Purpose of the Study:

  • To synthesize and characterize Cu2O/ZnO heterostructures for highly sensitive H2S detection.
  • To develop a portable sensor for real-time H2S monitoring in exhaled breath.
  • To explore the potential of these sensors for chronic disease diagnostics.

Main Methods:

  • Utilized a two-dimensional (2D) electrodeposition in situ assembly method with semisine wave voltage.
  • Fabricated CuZnO nanoarrays using direct current voltage for comparison.
  • Investigated gas sensing properties at room and sub-zero temperatures (-20 °C).

Main Results:

  • Achieved a high response of 8.53 × 10^4 to 1 ppm H2S at room temperature with a 10 ppb detection limit.
  • Demonstrated a response of 42 to 10 ppm H2S at -20 °C.
  • Cu2O/ZnO sensors showed ~3774 times greater response to 50 ppm H2S compared to CuZnO sensors.

Conclusions:

  • The p-n heterojunctions and sulfuration reaction in Cu2O/ZnO heterostructures are key to their superior gas-sensing performance.
  • Successfully applied the Cu2O/ZnO sensor for H2S detection in human exhaled breath.
  • Paved the way for advanced portable room-temperature breath sensors for disease monitoring.