Group IV materials

In this work, the focus has been based entirely on group IV materials. This excitement can also be realized in photonic and high speed microelectronics. Growth methods and analysis are also readily available. 

With the exception of GaAs, GaP, InP and InSb, the absorption studies on donors in compound semiconductors are much less documented than those in group-IV materials. This does not reflect a lack of interest for these materials, as they have been the subjects of many PL experiments, but rather... 

Carbon is a group IV material. This allows it to form four bonds, increasing its chemical versatility and helping it form long chain polymers. 

There are other types of proteins that adhered to the CL surface such as albumin or lactoferrin, whose mechanism of adhesion seems to be different from lysozyme. However, because of the large molecular weight of albumin compared to lysozyme, this protein only forms deposits on the lens surface without penetration into the lens matrix [108]. Quantities of proteins recovered from worn CL are on the order of <50 pg per lens for non-ionic materials to more than 500 pg per lens for ionic group IV materials [101,109]. 

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