| Popis: |
The year 2011 marks the 10th anniversary of silicon nanowire (SiNW)-based electronic devices. Since their introduction (Cui & Lieber, 2001) SiNW-based sensor devices have gained considerable interest as a general platform for ultra-sensitive, electrical detection of biological and chemical species (Figure 1). Although SiOx coatings can be used for the detection of protons (Cui, 2001), and gases (Wan, 2009), the specific detection of other analytes, including ions and biomolecules requires the presence of an affinity layer that interacts with the analyte of interest. Such a layer can be added on top of the nanowire by the modification of the nanowire surface. In this chapter we review the surface modification strategies that have been explored on SiNW-based devices over the past decade. |
