High-velocity surface acoustic waves in diamond and sapphire with zinc oxide film

1999 ◽  
Vol 75 (19) ◽  
pp. 3029-3031 ◽  
Author(s):  
N. F. Naumenko ◽  
I. S. Didenko
Keyword(s):  
Zinc Oxide ◽  
Oxide Film ◽  
High Velocity ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Zinc Oxide Film ◽  
Velocity Surface

Electrochemical Self-Assembly of Oriented Zinc Oxide Film from Polyethylene Oxide Containing Electrolyte

2009 ◽  
Vol 9 (3) ◽  
pp. 1766-1771 ◽  
Author(s):  
Xiaohui Ju ◽  
Wei Feng ◽  
Akihiko Fujii ◽  
Masanori Ozaki
Keyword(s):  
Zinc Oxide ◽  
Oxide Film ◽  
Polyethylene Oxide ◽  
Self Assembly ◽  
Zinc Oxide Film

Butane/Propane Gas Sensing Using Zinc Oxide Film Grown by Successive Ionic Layer Adhesion and Reaction

2016 ◽  
Vol 705 ◽  
pp. 273-277 ◽  
Author(s):  
Emmanuel A. Florido ◽  
Sarah Allyssa Solidum
Keyword(s):  
Zinc Oxide ◽  
Oxide Film ◽  
Response Time ◽  
Recovery Time ◽  
Zno Nanorods ◽  
Hot Water ◽  
Zinc Oxide Film ◽  
Zno Film ◽  
Voltage Output ◽  
Ionic Layer

This study was aimed to test the ability of zinc oxide (ZnO) film fabricated by successive ionic layer adsorption and reaction (SILAR) to detect liquid petroleum gas consisting of a mixture of butane/propane gas. The film was fabricated by alternate dipping of pre-cleaned glass substrates in a sodium zincate bath and in a 95°C hot water bath using an automated dipping machine to control the sequence and dipping time. Scanning electron microscopy (SEM) revealed a uniform film consisting of wurtzite ZnO nanorods for the sample grown using 0.1M concentration of sodium zincate and 200 dippings. Current-voltage characterization of the samples showed an average resistivity of 1.343 Ω-m. EDS analysis of the film confirmed the existence of zinc oxide with 65.9% zinc and 34.1% oxygen. The ZnO film exhibited an ability to detect the gas with an average gas response of 0.44, average response time of 14 seconds and average recovery time of 25 seconds using a gas concentration in air of 1.5 % by volume. Response time is the time for the sensor to reach the peak voltage output from the start of gas exposure while recovery time is the time for the voltage output to return to the initial value without gas when the gas is removed from the chamber. The zinc oxide film also showed a voltage output of 100, 109.31, 118.92, 123.61, 133.5, and 149.52 mV when exposed to percent volume gas concentrations of 0, 0.5, 0.75, 1.0, 1.25, and 1.5, respectively with a correlation coefficient of 0.97. The sensor sensitivity is 32 Δ(mV)/Δ(%conc).

Smooth indium zinc oxide film prepared by sputtering a In2O3:ZnO=95:5 target

2007 ◽  
Vol 38 (12) ◽  
pp. 1202-1206 ◽  
Author(s):  
Shang-Chou Chang ◽  
Ming-Hua Shiao
Keyword(s):  
Zinc Oxide ◽  
Oxide Film ◽  
Zinc Oxide Film ◽  
Indium Zinc Oxide

Analysis of propagation characteristics of Rayleigh surface acoustic waves on Yb0.33Al0.67N piezoelectric films/high-velocity substrates

2022 ◽  
Author(s):  
Masashi Suzuki ◽  
Shoji Kakio
Keyword(s):  
High Velocity ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Film Surface ◽  
Layered Structures ◽  
Coupling Factor ◽  
Propagation Characteristics ◽  
Effective Coupling ◽  
Diamond Substrate ◽  
Coupling Factors

Abstract Piezoelectricity of YbAlN films has recently been shown to be almost as high as that of ScAlN films. YbAlN film surface acoustic wave (SAW) resonators are expected to have a high coupling factor. We theoretically investigated the propagation characteristics of first-mode Rayleigh SAWs (RSAWs) on Yb0.33Al0.67N film/high-velocity Si, sapphire, AlN, SiC, BN, and diamond substrates. The first-mode RSAWs on the YbAlN layered structures had high coupling factors, higher than those on ScAlN layered structures. An enhancement of the effective coupling factor of the first mode RSAWs was observed in polarity inverted YbAlN film/BN or diamond substrate structures.

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