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. 2015 Jan 14;15(1):1635–1675. doi: 10.3390/s150101635

Table 1.

Compatibility of weak and strong anchors to different surface materials.

Type of Anchor Graphic Example Anchor Examples Surface Materials
weak anchors (physisorption) graphic file with name sensors-15-01635t1.jpg amino acids; proteins polyelectrolytes hydrophobic chains hydrophilic lipid head group flexible but non-specific metal oxides; charged surfaces hydrophobic surfaces hydrophilic surfaces
strong anchors (chemisorption) graphic file with name sensors-15-01635t2.jpg Silanes SiO2 (metal and non-metal oxides/hydroxides)
Thiols Au, Ag, Cu, Pt, ITO
phosph(on)ates TiO2, Al2O3, TiO2 and many other transition metal oxides
catechols TiO2, Fe3O4 (metal oxides)