“…Currently, array detection methods include traditional fluorescence (Nagl et al, 2005;Park et al, 2006;Templin et al, 2002) and label-free techniques such as the BioCD (Varma et al, 2004a,b;Wang et al, 2007;Zhao et al, 2007), surface plasmon resonance (Boozer et al, 2006;Homola et al, 1999) and imaging ellipsometry (Chamritski et al, 2007). Among these approaches, the BioCD utilizes local interferometry to detect protein mass and realize label-free protein detection, and the BioCD is compatible with fluorescence detection.…”