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

Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

1.5K
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
1.5K
Gas Chromatography: Overview of Detectors01:13

Gas Chromatography: Overview of Detectors

2.6K
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
2.6K
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

2.1K
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
2.1K
Flame Photometry: Overview01:02

Flame Photometry: Overview

2.0K
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
2.0K
Flame Photometry: Lab01:16

Flame Photometry: Lab

1.3K
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
1.3K
Photoluminescence: Applications01:14

Photoluminescence: Applications

1.3K
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Scalable Production and Covalent Functionalization of WS<sub>2</sub> Nanosheets for Membrane Fabrication and Ion Separation.

Nano letters·2026
Same author

Asymmetric Pulsed Electrolysis Enhances Nitrate-to-Ammonia Electroreduction via Optimizing the Local Reaction Microenvironment.

ACS applied materials & interfaces·2026
Same author

Contemporary Challenges in van der Waals 2D Semiconductors.

ACS nano·2026
Same author

Growth of non-layered 2D transition metal nitrides enabled by transient chloride templates.

Nature communications·2026
Same author

Ultrasensitive 2D Vermiculite Inorganic Liquid Crystals for Nonlinear Optical Activation.

ACS nano·2026
Same author

A Low-Voltage Stretchable Synaptic Transistor Array for Temperature Perception, Facilitated Associative Learning, and Neuromorphic Computing.

ACS applied materials & interfaces·2025

Related Experiment Video

Updated: Apr 13, 2026

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
10:18

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials

Published on: January 5, 2019

12.8K

Black phosphorus gas sensors.

Ahmad N Abbas1,2, Bilu Liu1, Liang Chen1

  • 1†Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, United States.

ACS Nano
|May 7, 2015
PubMed
Summary
This summary is machine-generated.

Black phosphorus field-effect transistors demonstrate sensitive detection of nitrogen dioxide (NO2). This elemental material shows promise for future chemical sensing applications, with detected concentrations down to 5 parts per billion.

Keywords:
NO2black phosphoruscharge transferchemical sensinggas sensingphosphorene

More Related Videos

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA
08:12

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA

Published on: May 16, 2016

16.3K
Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
09:46

Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5

Published on: August 25, 2016

12.4K

Related Experiment Videos

Last Updated: Apr 13, 2026

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials
10:18

Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials

Published on: January 5, 2019

12.8K
Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA
08:12

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA

Published on: May 16, 2016

16.3K
Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
09:46

Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5

Published on: August 25, 2016

12.4K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Black phosphorus (BP) and its 2D forms like phosphorene are gaining attention for field-effect transistors (FETs).
  • Previous research focused on BP FETs, PN junctions, and photodetectors.
  • Chemical sensing using BP devices was theoretically proposed but lacked experimental validation.

Purpose of the Study:

  • To experimentally investigate chemical sensing capabilities of multilayer black phosphorus FETs.
  • To detect nitrogen dioxide (NO2) using BP-based sensors.
  • To analyze the sensing mechanism and kinetics of NO2 adsorption on black phosphorus.

Main Methods:

  • Fabrication of field-effect transistors using multilayer black phosphorus.
  • Exposure of BP FETs to varying concentrations of nitrogen dioxide (NO2).
  • Monitoring changes in device conduction and analyzing adsorption kinetics using the Langmuir isotherm model.

Main Results:

  • BP sensors showed increased conduction upon exposure to NO2.
  • Excellent sensitivity was achieved, detecting NO2 down to 5 parts per billion (ppb).
  • Conduction changes followed the Langmuir isotherm, and adsorption/desorption rate constants were determined.

Conclusions:

  • Multilayer black phosphorus FETs exhibit significant potential for NO2 chemical sensing.
  • The study provides the first experimental verification of BP-based chemical sensing.
  • The findings highlight the electronic and sensing properties of black phosphorus for future applications.