From:  Novel organotrichlorosilane surface chemistry towards covalent polyhistidine-tag immobilization and surface modification of piezoelectric lithium niobate for future biosensor development

 Water contact angle values for black LN at the various steps of surface modification (Averaged over three trials with standard deviation for each step of surface modification).

Sample
(Surface Chemistry on LN)
Contact angle
(average ± standard deviation)
LN-X
(Bare, untreated)
72.9° ± 6.4°
LN-OH
(Hydroxylated)
56.5° ± 7.7°
LN-CES-EG2-SiOx
(CES-EG2-SiCl3 modified)
68.6° ± 2.3°
LN-VS-EG2-SiOx
(VS-bearing)
64.8° ± 5.8°
LN-Boc-His-Et-SO2-EG2-SiOx
(Boc-His-OH treated)
70.3° ± 0.9°