Information for Contributors

<正>1 Chinese Journal of Acoustics is the publication of the Acoustical Society of China and The Institute of Acoustics,Chinese Academy of Sciences,to promote the international understanding and collaboration in the field of acoustics.It publishes original works in all branches of acoustics in China.Contributions from invited guests and friends overseas are also solicited.     

稀土催化专刊前言(英文)

正Rare earth elements have wide applications in optics, elec‐tronics, magnetics, and catalysis due to the unique properties of4f electrons. Many countries see them as having strategic val‐ues and consider them a "vault for new materials". China has abundant reserves of rare earth elements and produces most of the world's supplies. With the quick development of the metal alloy, magnet, and fluorescent powder industries, there have been large usages of the middle and heavy rare earth metals,     

Development of two-port surface acoustic wave resonator with Al/Au electrodes for gas sensing

Simple and efficient surface acoustic wave(SAW)two-port resonators with low insertion loss and high Q-values on ST-X quartz substrate using a corrosion-proof A1/Au-stripe electrode structure are developed for gas sensing.It was composed of two shorted grating reflectors and adjacent intedigital transducers(IDT),and an active metal film in the cavity between the IDTs for the sensitive film coating.The devices are expected to provide good protection towards metal electrode for gas sensors application in chemically reactive environments.Excellent device performance as low insertion loss,high Q factor and single-mode are achieved by carefully selecting the metallic electrode thickness,cavity length and acoustic aperture.Prior to fabrication,the coupling of modes(COM)model was performed for device simulation to determine the optimal design parameters.The fabricated single-mode SAW resonator at operation frequency of 300 MHz range exhibits matched insertion loss of~6.5 dB and loaded Q factor in the 3000 range.Using the fabricated resonator as the feedback element,a dualresonator-oscillator with excellent frequency stability(0.1 ppm)was developed and evaluated experimentally,and it is significant for performance improvement of SAW gas sensor.     

Information for Contributors

正1 Chinese Journal of Acoustics is the publication of the Acoustical Society of China and The Institute of Acoustics,Chinese Academy of Sciences,to promote the international understanding and collaboration in the field of acoustics.It publishes original works in all branches of acoustics in China.Contributions from invited guests and friends overseas are also solicited.2 Contributed papers submitted for publication in the Journal should be original,unpub-