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

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.

scholarly journals Highly sensitive, room temperature operated gold nanowire-based humidity sensor: adoptable for breath sensing

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 1157-1164
Author(s):  
Parag V. Adhyapak ◽  
Aishwarya M. Kasabe ◽  
Amruta D. Bang ◽  
Jalindar Ambekar ◽  
Sulabha K. Kulkarni
Keyword(s):  
Relative Humidity ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Gold Nanowire ◽  
Humidity Sensing ◽  
Highly Sensitive ◽  
Resistive Sensor ◽  
Relative Humidity Range ◽  
Humidity Range

A novel, highly sensitive gold nanowire (AuNW) resistive sensor is reported here for humidity sensing in the relative humidity range of 11% to 92% RH as well as for breath sensing.

Fast and highly sensitive humidity sensors based on NaNbO3 nanofibers

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 20453-20458 ◽  
Author(s):  
Youdong Zhang ◽  
Xumin Pan ◽  
Zhao Wang ◽  
Yongming Hu ◽  
Xiaoyuan Zhou ◽  
...  
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Temperature Response ◽  
Electrospinning Process ◽  
Humidity Sensors ◽  
Highly Sensitive

A humidity sensor based on NaNbO3 nanofiber networks with fast, ultra-sensitive and selective room-temperature response was fabricated through electrospinning process.

Controlled Growth and Characterization Ag/ZnO Nanotetrapods for Humidity Sensing

2018 ◽  
Vol 21 (7) ◽  
pp. 462-467
Author(s):  
Babak Sadeghi
Keyword(s):  
Room Temperature ◽  
Zinc Complex ◽  
Water Solution ◽  
Particle Morphology ◽  
Quick Response ◽  
Separation System ◽  
Humidity Sensing ◽  
Sensor Material ◽  
Highly Sensitive

Aim and Objective: Ultrafine Ag/ZnO nanotetrapods (AZNTP) have been prepared successfully using silver (I)–bis (oxalato) zinc complex and 1, 3-diaminopropane (DAP) with a phase separation system, and have been injected into a diethyl/water solution. Materials and Methods: This crystal structure and lattice constant of the AZNTP obtained were investigated by means of a SEM, XRD, TEM and UV-vis spectrum. Results: The results of the present study demonstrated the growth and characterization AZNTP for humidity sensing and DAP plays a key role in the determination of particle morphology. AZNTP films with 23 nm in arm diameter have shown highly sensitive, quick response sensor material that works at room temperature.

Synergistic effects of SnO2 and Au nanoparticles decorated on WS2 nanosheets for flexible, room-temperature CO gas sensing

2021 ◽  
Vol 332 ◽  
pp. 129493
Author(s):  
Jae-Hun Kim ◽  
Jin-Young Kim ◽  
Ali Mirzaei ◽  
Hyoun Woo Kim ◽  
Sang Sub Kim
Keyword(s):  
Room Temperature ◽  
Au Nanoparticles ◽  
Gas Sensing ◽  
Synergistic Effects ◽  
Ws2 Nanosheets ◽  
Co Gas

Ultrasensitive chemiresistive humidity sensor based on gold functionalized WS2 nanosheets

2021 ◽  
pp. 113008
Author(s):  
Aashi Gupta ◽  
Neha Sakhuja ◽  
Ravindra Kumar Jha ◽  
Navakanta Bhat
Keyword(s):  
Humidity Sensor ◽  
Ws2 Nanosheets

scholarly journals Gold and ZnO-Based Metal-Semiconductor Network for Highly Sensitive Room-Temperature Gas Sensing

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3815
Author(s):  
Renyun Zhang ◽  
Magnus Hummelgård ◽  
Joel Ljunggren ◽  
Håkan Olin
Keyword(s):  
Solar Cells ◽  
Gas Sensor ◽  
Network Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Gold Particles ◽  
Highly Sensitive ◽  
Semiconductor Electronics ◽  
New Type

Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au–ZnO-based metal-semiconductor (M-S)n network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S)n network. The (M-S)n network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S)n network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.

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