Tin oxide nanowires decorated with Ag nanoparticles for plasmon-driven chemical sensing at room temperature (Conference Presentation)

2018 ◽  
Author(s):  
Camilla Baratto ◽  
Nicola Cattabiani ◽  
Maurizio Donarelli ◽  
Andrea Ponzoni ◽  
Dario Zappa ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Ag Nanoparticles ◽  
Chemical Sensing ◽  
Room Temperature ◽  
Oxide Nanowires

scholarly journals Ag Nanoparticles Sensitized In2O3 Nanograin for the Ultrasensitive HCHO Detection at Room Temperature

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Shiqiang Zhou ◽  
Mingpeng Chen ◽  
Qingjie Lu ◽  
Yumin Zhang ◽  
Jin Zhang ◽  
...  
Keyword(s):  
Indoor Air ◽  
Ag Nanoparticles ◽  
Room Temperature ◽  
Unsolved Problem ◽  
Air Pollutant ◽  
Ag Nps ◽  
Performance Targets ◽  
Fabrication Cost ◽  
Low Concentrations ◽  
Stringent Performance

AbstractFormaldehyde (HCHO) is the main source of indoor air pollutant. HCHO sensors are therefore of paramount importance for timely detection in daily life. However, existing sensors do not meet the stringent performance targets, while deactivation due to sensing detection at room temperature, for example, at extremely low concentration of formaldehyde (especially lower than 0.08 ppm), is a widely unsolved problem. Herein, we present the Ag nanoparticles (Ag NPs) sensitized dispersed In2O3 nanograin via a low-fabrication-cost hydrothermal strategy, where the Ag NPs reduces the apparent activation energy for HCHO transporting into and out of the In2O3 nanoparticles, while low concentrations detection at low working temperature is realized. The pristine In2O3 exhibits a sluggish response (Ra/Rg = 4.14 to 10 ppm) with incomplete recovery to HCHO gas. After Ag functionalization, the 5%Ag-In2O3 sensor shows a dramatically enhanced response (135) with a short response time (102 s) and recovery time (157 s) to 1 ppm HCHO gas at 30 °C, which benefits from the Ag NPs that electronically and chemically sensitize the crystal In2O3 nanograin, greatly enhancing the selectivity and sensitivity.

Easy Axis Spin-Flop in ε-Phase In-Doped Iron (III) Oxide Nanowires

2015 ◽  
Vol 233-234 ◽  
pp. 558-561
Author(s):  
A.I. Dmitriev ◽  
O.V. Koplak ◽  
Asuka Namai ◽  
Hiroko Tokoro ◽  
Shinichi Ohkoshi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Coercive Force ◽  
Room Temperature ◽  
Easy Axis ◽  
Sharp Decrease ◽  
Oxide Nanowires ◽  
Spin Flop Transition ◽  
Ε Phase

This work reports study of magnetic properties of the ε-In0.24Fe1.76O3 nanowires possessing 6 kOe coercive force at room temperature. Freezing of the sample below 190 K causes sharp decrease of the coercive force and magnetization of nanowires driven by the easy axis spin-flop transition.

Light enhanced NO2 gas sensing with tin oxide at room temperature: conductance and work function measurements

2003 ◽  
Vol 93 (1-3) ◽  
pp. 580-584 ◽  
Author(s):  
K. Anothainart ◽  
M. Burgmair ◽  
A. Karthigeyan ◽  
M. Zimmer ◽  
I. Eisele
Keyword(s):  
Work Function ◽  
Tin Oxide ◽  
Room Temperature ◽  
Gas Sensing

Optical Degradation of Indium Tin Oxide Thin Films Induced by Hydrogen-Related Room Temperature Reduction

2003 ◽  
Vol 42 (Part 2, No. 5B) ◽  
pp. L546-L548 ◽  
Author(s):  
Yu Wang ◽  
Wan Ping Chen ◽  
Kei Chun Cheng ◽  
Helen Lai Wah Chan ◽  
Chung Loong Choy
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Room Temperature ◽  
Oxide Thin Films ◽  
Temperature Reduction
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