Premium
Cover Picture (Angew. Chem. Int. Ed. Engl. 4/1990)
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199003291
Subject(s) - quartz crystal microbalance , cover (algebra) , electrochemistry , electrode , nanotechnology , materials science , physics , analytical chemistry (journal) , chemistry , computer science , engineering , mechanical engineering , adsorption , organic chemistry
The cover picture is a schematic drawing of a coated oscillator crystal of a quartz microbalance that is in contact with a liquid. This highly sensitive “weighing technique” is based on the principle that the frequency of an oscillator crystal changes as a quantitative function of mass. With this technique it is possible to follow in situ—and with microscopic resolution–surface processes occurring at a solid/liquid phase boundary. For example, the experimental curve reproduced in the right half of the picture depicts the change in frequency that accompanies electrochemical oxidation/reduction of a gold electrode. Simultaneous recording of changes in current flow permits conclusions to be drawn with respect to the smoothness of the electrode surface. Other recent applications for the quartz microbalance developed within the past decade are described in the review by R. Schumacher on pp. 329 ff.—The cover picture was created by Illustration & Design, Mannheim (FRG).