图6. CoCrMo合金表面及BSA吸附在CoCrMo合金表面后的AFM形貌图和对应的扫描Kelvin探针测量的电势图，每张图下的曲线表示图中绿线位置的形貌起伏和电势变化，以及BSA在CoCrMo表面吸附后，诱导表面电子聚集的示意图^[36]

Fig.6. AFM topographic images (a, c) and SKPFM images (b, d) of the CoCrMo alloy surface (a, b), and BSA on the CoCrMo alloy surface (c, d), the curves under each figure show the ups and downs of morphology and the potential of the green line on the corresponding image; and schematic of the adsorption of BSA on the CoCrMo surface which induces the gathering of free electros under SKPFM (e)^{(AFM—atomic force microscope, SKPFM—surface Kelvin potential force microscopy)[36]}