Polyaniline based stable humidity sensor operable at room temperature

2019 ◽  
Vol 561 ◽  
pp. 170-178 ◽  
Author(s):  
S. Manjunatha ◽  
T. Machappa ◽  
Y.T. Ravikiran ◽  
B. Chethan ◽  
A. Sunilkumar
Keyword(s):  
Room Temperature ◽  
Humidity Sensor

Development of nanostructured nickel reinforced polyacrylamide via frontal polymerization for a reliable room temperature humidity sensor

2019 ◽  
Vol 112 ◽  
pp. 161-169 ◽  
Author(s):  
Priyanka Chaudhary ◽  
Dheeraj Kumar Maurya ◽  
Samiksha Sikarwar ◽  
B.C. Yadav ◽  
G.I. Dzhardimalieva ◽  
...  
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Frontal Polymerization

A highly sensitive room temperature humidity sensor based on 2D-WS2 nanosheets

FlatChem ◽  
2018 ◽  
Vol 9 ◽  
pp. 21-26 ◽  
Author(s):  
S.G. Leonardi ◽  
W. Wlodarski ◽  
Y. Li ◽  
N. Donato ◽  
Z. Sofer ◽  
...  
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Highly Sensitive ◽  
Ws2 Nanosheets

High-Response Room-Temperature NO2 Sensor and Ultrafast Humidity Sensor Based on SnO2 with Rich Oxygen Vacancy

2019 ◽  
Vol 11 (14) ◽  
pp. 13441-13449 ◽  
Author(s):  
Yujia Zhong ◽  
WeiWei Li ◽  
Xuanliang Zhao ◽  
Xin Jiang ◽  
Shuyuan Lin ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Room Temperature ◽  
Humidity Sensor ◽  
High Response ◽  
No2 Sensor

scholarly journals Intelligent Baby Box Based on IoT to Observe Room Temperature and Baby Crying

2018 ◽  
pp. 114
Author(s):  
Dani Sasmoko ◽  
Dzyo Bachtiar
Keyword(s):  
Internet Of Things ◽  
Monitoring System ◽  
Respiratory Function ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Cardiac Performance ◽  
The Internet ◽  
Long Time ◽  
Negative Effect ◽  
The Internet Of Things

Internet of Things (IoT) connects a global infrastructure in communities so they can take benefit of advanced services, by connecting objects (things) both physical and virtual with the Internet so that objects can communicate each other. The object of this study is a baby box to control the baby’s condition. When the baby cries too long it may cause Baby Distressed Tantrum which is the feeling of being depressed in the baby because they feel ignored. If this happens for a long time will endanger the baby's health as it is related to respiratory function and cardiac performance. The function of the baby box is to observe a baby when left without supervision. It will enable users to know if the baby is sleeping, awake or crying. Leaving a crying baby too long may have a negative effect. By applying the Internet of Things (IoT) in the design of an intelligent a baby box will help the parents and babysitter in controlling the baby if they have other activities to do. The baby box monitoring system has a dht11 temperature and humidity sensor, and a noise sensor to detect the baby crying. An esp8266 module on Wemos d1 will send data to an android smartphone and notify the user by sound or vibration.

Polypyrrole/magnesium oxide composite as room temperature operable humidity sensor

2020 ◽  
Author(s):  
Basavalingappa Chethan ◽  
Hotte Gowdru Raj Prakash ◽  
Yaled Thippeswamy Ravikiran ◽  
Shekarappa Pratibha ◽  
Nagappa Sasidhar ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Oxide Composite

Synthesis, Electrical and Humidity Sensing Properties of BaTiO3 Nanofibers via Electrospinning

2011 ◽  
Vol 418-420 ◽  
pp. 684-687 ◽  
Author(s):  
Hong Di Zhang ◽  
Yun Ze Long ◽  
Zhao Jian Li ◽  
Bin Sun ◽  
Chen Hao Sheng
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Annealing Process ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Humidity Sensing ◽  
P Type ◽  
Application Prospects ◽  
Humidity Sensing Properties ◽  
Scanning Electron

Barium titanate (BTO, BaTiO3) nanofiber was prepared via electrospinning and followed annealing process. The as-spun and calcined BTO nanofibers were characterized by a scanning electron microscope (SEM). After annealing at 800 °C in air for 3 h, polycrystalline BTO nanofibers with 120-200 nm in diameter were successfully obtained. I-V characteristic curves of single BTO nanofiber were measured. The p-type semiconducting fiber shows a room-temperature conductivity of about 0.3 S/cm. In addition, the small humidity hysteresis demonstrates the application prospects of electrospun BTO nanofibers in the fabrication of a high-sensitive humidity sensor.

Vertically Aligned Mn-doped Fe3O4 Nanowire Arrays: Magnetic Properties and Gas Sensing at Room Temperature

2007 ◽  
Vol 1032 ◽  
Author(s):  
Seon Oh Hwang ◽  
Chang Hyun Kim ◽  
Yoon Myung ◽  
Seong-Hun Park ◽  
Jeunghee Park ◽  
...  
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Gas Sensing ◽  
Magnetic Circular Dichroism ◽  
Nanowire Arrays ◽  
Triatomic Molecules ◽  
Tetrahedral Sites ◽  
Highly Sensitive ◽  
Vertically Aligned ◽  
Mn Doped

AbstractVertically-aligned Mn (10%)-doped Fe3O4 (Fe2.7Mn0.3O4) nanowire arrays were produced by the reduction/substitution of pre-grown Fe2O3 nanowires. These nanowires were ferromagnetic with a Verwey temperature of 129 K. X-ray magnetic circular dichroism measurements revealed that the Mn2+ ions preferentially occupy the tetrahedral sites, substituting for the Fe3+ ions. We observed that the Mn substitution decreases the magnetization, but increases the electrical conductivity. We developed highly sensitive gas sensors using these nanowire arrays, operating at room temperature, whose sensitivity showed a correlation with their bond strength of diatomic/triatomic molecules. Based on the fact that the sensitivity was highest toward water vapor, an excellent-performance humidity sensor was fabricated.

Porous Silicon Organic Vapor and Humidity Sensor

1996 ◽  
Vol 459 ◽  
Author(s):  
M. C. Poon ◽  
J.K.O. Sin ◽  
H. Wong ◽  
P. G. Han ◽  
W. H. Kwok ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Response Time ◽  
Schottky Diode ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Ethanol Vapor ◽  
Electrical Contacts ◽  
Diode Structure ◽  
Organic Vapor ◽  
Humidity Change

ABSTRACTThis paper presents new organic vapor sensitive device using anodized porous silicon (PS). The sensor has aluminum (Al)/PS/p-Si/Al Schottky diode structure and sensitivity at room temperature in 2600 ppm acetone, methanol, 2-propanol and ethanol is about 4, 5, 10 and 40 times respectively. The sensitivity in 800–2600 ppm ethanol vapor is 2 to 40 times. The diode sensor can be converted into an Al/PS/Al resistor sensor by switching the electrical contacts, and the sensitivity is about 500 times for a humidity change of 43–75%. All sensors have response time of about 0.5 min. The sensitivity is stable with time and the PS sensor can be integrated into VLSI Si devices to form novel microelectronic systems.

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