Darkening Speed Tests with Reversible Electroplating Shutters
- 1 January 1962
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 109 (11) , 1034-1040
- https://doi.org/10.1149/1.2425231
Abstract
The design and construction of experimental reversible electroplating light shutters are described, and their preliminary evaluation by means of resistance measurements is outlined. Oscilloscope traces of simultaneous light transmission changes and plating pulses are presented and interpreted. An observed better‐than‐expected darkening efficiency may be attributed either to an anomalously high absorption coefficient of the very thin Ag films deposited by an unusually fast plating procedure or to increased turbidity and/or increased multiple light reflections. The maximum achieved plating speeds corresponded to average current densities of up to 80 amp/cm2 for 250 to 400 µsec over an area of up to 16 cm2. No damage in the tin oxide coating was observed after more than 13 such pulses with a plating solution of at a neutral pH. The maximum plating speeds expected from first order estimates of diffusion rate limitations were approached in five tests.Keywords
This publication has 0 references indexed in Scilit: