Adsorption on germanium

Figure 9. Kinetic plot for 0.01% (w v) B-lactoglobulin and 1.0% (w v) alginic acid adsorption on and desorption from germanium ATR crystal as a function of time of flow. Key D1548 cm 1 band of 13-lactoglobulin 1034 cm 1 band of alginic acid. (All data not shown for clarity.)...

The term semiconductor covers a wide range of materials, including the elements silicon and germanium, and compounds such as oxides, sulphides, selenides, etc. A survey of the physics and chemistry of semiconductors is given in the book edited by Hannay and particular reference to semiconductivity and adsorption on oxide surfaces is to be found in an article by Gray . 

Thus, our very preliminary results would indicate that adsorption on a germanium surface produces a protein structure similar to the structure in solution, i.e. it is the solution structure that first adsorbs. However, this initial adsorbed structure may not be the most stable structure and thus, rearrangement to a more stable structure may occur for some proteins. It is important to note that these results apply to germanium surfaces. It has already been noted (7) that the structure of adsorbed albumin and adsorbed IgG changes with the nature of the adsorption surface. 

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