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ΣXr2(N/F) showing comparisons of the XPS determined surface compositions of C16 COOH-SAMs on 14nm AuNP at 0° macroscopic photoelectron emission angle with (a) the SAM on flat Au measured at various photoelectron emission angles ranging from 5 to 85°; (b) the SAM on flat Au simulated at various photoelectron emission angles ranging from 5 to 85° using 1.1Å per CH2, RSA=1.05 and CH2-contamination thickness=1.5Å.
