AL


loss features indicates that minimal damage was caused by the cluster ion beam.


After the CuPc layer is removed, MAGCIS is switched, in seconds, to mon- atomic mode, and the remaining device is profiled. A profile of the entire device stack is created, permitting the composition to be monitored and compared with other devices or batches (Figure 3).


Figure 4 – Structures and C1s spectra of phenylalanine and tyrosine. Figure 3 – MAGCIS profile of organic FET.


Analysis of biomaterials Multi-layer organic structures are also used in the development of biosensors. Here, multi-layers of amino acids are employed to create the surface to attach the sensing ligands, controlling the ease and stability of attachment, packing density of the ligands and efficiency of the sensing system. One example is a surface plasmon resonance (SPR) biosensor, which is used to detect the presence of particular proteins by changes in


AMERICAN LABORATORY


15


MARCH 2016


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