Highly Sensitive and Fast-Response Volatile Organic Compounds Sensors Based on Star-Shaped BaTiO3/ZnO Heterostructures

2020 ◽  
pp. 1-1
Author(s):  
Mohsen Taheripour ◽  
Navid Yasrebi ◽  
Shirin Nasresfahani ◽  
Mohammad Hossein Sheikhi
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Fast Response ◽  
Highly Sensitive ◽  
Volatile Organic

scholarly journals Superior gas-sensing performance of amorphous CdO nanoflake arrays prepared at room temperature

2016 ◽  
Vol 4 (22) ◽  
pp. 8700-8706 ◽  
Author(s):  
Ye-Qing Zhang ◽  
Zhe Li ◽  
Tao Ling ◽  
Sergei A. Kulinich ◽  
Xi-Wen Du
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Room Temperature ◽  
Gas Sensing ◽  
Fast Response ◽  
Selective Detection ◽  
Safety Requirements ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sensing Performance

Highly sensitive and selective detection of volatile organic compounds (VOCs) with fast response time is imperative based on safety requirements, yet often remains a challenge.

A highly sensitive gas sensor based on Pd-doped Fe3O4nanoparticles for volatile organic compounds detection

2014 ◽  
Vol 6 (3) ◽  
pp. 886-892 ◽  
Author(s):  
Qingfeng Zhai ◽  
Bin Du ◽  
Rui Feng ◽  
Weiying Xu ◽  
Qin Wei
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Highly Sensitive ◽  
Volatile Organic

Ag-Functionalized macro-/mesoporous AZO synthesized by solution combustion for VOCs gas sensing application

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101304-101312 ◽  
Author(s):  
Xinxin Xing ◽  
Yuxiu Li ◽  
Dongyang Deng ◽  
Nan Chen ◽  
Xu Liu ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Solution Combustion ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sensing Application

The aim of this paper is to develop easily manufactured and highly sensitive gas sensors for VOCs (volatile organic compounds) detection.

High sensitivity and fast response SnO2 and La-SnO2 catalytic pellet sensors in detecting volatile organic compounds

2011 ◽  
Vol 89 (3) ◽  
pp. 186-192 ◽  
Author(s):  
Gaik Tin Ang ◽  
Geik Hoon Toh ◽  
Mohamad Zailani Abu Bakar ◽  
Ahmad Zuhairi Abdullah ◽  
Mohd Roslee Othman
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Sensitivity ◽  
Fast Response ◽  
Volatile Organic

Highly sensitive and selective sensors to volatile organic compounds using MWCNTs/SnO2

2012 ◽  
Vol 166-167 ◽  
pp. 150-155 ◽  
Author(s):  
Sadegh Ahmadnia-Feyzabad ◽  
Abbas Ali Khodadadi ◽  
Masoud Vesali-Naseh ◽  
Yadollah Mortazavi
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Highly Sensitive ◽  
Volatile Organic

scholarly journals Screening for SARS-CoV-2 persistence in Long COVID patients using sniffer dogs and scents from axillary sweats samples

2022 ◽  
Author(s):  
Dominique GRANDJEAN ◽  
Dorsaf SLAMA ◽  
Capucine GALLET ◽  
Clothilde JULIEN ◽  
Emilie SEYRAT ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Non Invasive ◽  
Invasive Test ◽  
Axillary Sweat ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sweat Sample ◽  
Asymptomatic Individuals ◽  
Hospital Contact

Objectives: Dogs can be trained to identify several substances not detected by humans, corresponding to specific volatile organic compounds (VOCs). The presence of VOCs, triggered by SARS-CoV-2 infection, was tested in sweat from Long COVID patients. Patients and methods: An axillary sweat sample of Long COVID patients and of COVID-19 negative, asymptomatic individuals was taken at home to avoid any hospital contact. Swabs were randomly placed in olfaction detection cones, and the material sniffed by at least 2 trained dogs. Results: Forty-five Long COVID patients, mean age 45 (6-71), 73.3% female, with prolonged symptoms evolving for a mean of 15.2 months (5-22) were tested. Dogs discriminated in a positive way 23/45 (51.1%) Long COVID patients versus 0/188 (0%) control individuals (p<.0001). Conclusion:This study suggests the persistence of a viral infection in some Long COVID patients and the possibility of providing a simple, highly sensitive, non-invasive test to detect viral presence, during acute and extended phases of COVID-19.

Design of a Gas Sensor for Hydrazines Based on Photo-Ionization Principle

2010 ◽  
Vol 44-47 ◽  
pp. 2050-2054
Author(s):  
Jun Liu ◽  
Qiu Lin Tan ◽  
Chen Yang Xue ◽  
Ji Jun Xiong
Keyword(s):  
Volatile Organic Compounds ◽  
Gas Sensor ◽  
Organic Compounds ◽  
Detection System ◽  
Block Diagram ◽  
Cell Structure ◽  
Fast Response ◽  
Functional Block Diagram ◽  
Volatile Organic ◽  
Photo Ionization

Based on the photo ionization principle, a gas sensor for the hydrazine is designed. The photo ionization gas sensor can also measure other volatile organic compounds and other gases in concentrations from sub parts per billion to 10000 parts per million (ppm). This gas sensor is the most efficient and inexpensive type of gas sensor. They are capable of giving real-time readings and monitoring continuously. The design of micro ionization chamber, signal detection circuits and installation technology is expatiated in detail. Through researching the design of cell structure, the cell with integration and miniaturization has been devised. By taking Single-Chip Microcomputer (SCM) as intelligence handling, the functional block diagram of gas detection system is designed with the analyzing and devising of its hardware and software system. Experiment results show that the gas sensor has reached the technology requirement of portable, mini-volume, high accuracy, fast response, continuous test, and is able to apply in detecting the organic gases. Therefore, the photo ionization sensor has a promising future for the hydrazines gas and volatile organic compounds detection.

Materials Design of Sensing Layers for Detection of Volatile Analytes

2012 ◽  
pp. 183-198
Author(s):  
Mutsumi Kimura ◽  
Tadashi Fukawa ◽  
Tsuyoshi Ikehara ◽  
Takashi Mihara
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chemical Sensors ◽  
Recent Progress ◽  
Materials Design ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Sensitivity And Selectivity

The authors developed highly sensitive sensing layers for detection of Volatile Organic Compounds (VOCs) by using polymeric nanomaterials. In this chapter, they describe their recent progress on the design of polymeric sensing layers for the chemical sensors. The nanostructures of polymeric sensing layer strongly influenced the sensitivity and selectivity for VOCs sensings.

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