𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Sensor properties of lead phthalocyanine in a surface acoustic wave system

✍ Scribed by W. Jakubik; M. Urbańczyk; A. Opilski

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
438 KB
Volume
39
Category
Article
ISSN
0041-624X

No coin nor oath required. For personal study only.

✦ Synopsis

The paper presents experimental results of the interaction of thin layers (83 and 310 nm) of lead phthalocyanine (PbPc) with trace amounts of toxic gas NO2 in a system with an acoustic surface wave on a LiNbO3 Y-Z substrate. PbPc films were prepared according to the usual vacuum evaporation method. Measurements of the sensor properties rely on changes in the differential frequency, deltaf, of the dual-delay line configuration, in one of which the investigated PbPc layer has been placed. Special stress has been put on the temperature dependence of the reversibility in the medium range, i.e. between 27 degrees C and 95 degrees C. Besides, one simple method for thin PbPc film regeneration in a low NO2 concentration range has been presented.

📜 SIMILAR VOLUMES

Gas-detecting properties of surface acou
Gas-detecting properties of surface acoustic wave ammonia sensors
✍ Chi-Yen Shen; Chun-Pu Huang; Wang-Tsung Huang 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 136 KB

The detecting properties of l-glutamic acid hydrochloride that is deposited on 128 • YX-LiNbO 3 surface acoustic wave (SAW) delay lines are studied in this work. SAW gas sensors that were based on l-glutamic acid hydrochloride had good sensitivity, selectivity, reversibility, and repeatability to am

Assay of Pancreatic Lipase with the Surf
Assay of Pancreatic Lipase with the Surface Acoustic Wave Sensor System
✍ K. Ge; D.H. Liu; K. Chen; L.H. Nie; S.Z. Yao 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 339 KB

A new type of surface acoustic wave sensor system for assaying the activity of pancreatic lipase has been proposed. The assay of this enzyme is based on the change in conductance of the solution caused by the release of a fatty acid, using triolein as a substrate. A linear relationship between frequ