Extended Data Fig. 5: Time-of-flight H signal. | Nature

Extended Data Fig. 5: Time-of-flight H signal.

From: Adventitious carbon breaks symmetry in oxide contact electrification

Extended Data Fig. 5: Time-of-flight H signal.

A signal for H can be extracted indirectly from the LEIS measurements using the time-of-flight filter. We compare it here with the corresponding LEIS signal for C, showing that both have a similar evolution in time. The fact that H does not go to zero can be attributed to silanol groups (Si–OH) and the quick readsorption of surface water.

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