@incollection{PoghossianSchoening2017,
  author    = {Poghossian, Arshak and Sch{\"o}ning, Michael Josef},
  title     = {Nanomaterial-Modified Capacitive Field-Effect Biosensors},
  series = {Springer Series on Chemical Sensors and Biosensors (Methods and Applications)},
  booktitle = {Springer Series on Chemical Sensors and Biosensors (Methods and Applications)},
  publisher = {Springer},
  address   = {Berlin, Heidelberg},
  doi       = {10.1007/5346_2017_2},
  pages     = {1 -- 25},
  year      = {2017},
  abstract  = {The coupling of charged molecules, nanoparticles, and more generally, inorganic/organic nanohybrids with semiconductor field-effect devices based on an electrolyte-insulator-semiconductor (EIS) system represents a very promising strategy for the active tuning of electrochemical properties of these devices and, thus, opening new opportunities for label-free biosensing by the intrinsic charge of molecules. The simplest field-effect sensor is a capacitive EIS sensor, which represents a (bio-)chemically sensitive capacitor. In this chapter, selected examples of recent developments in the field of label-free biosensing using nanomaterial-modified capacitive EIS sensors are summarized. In the first part, we present applications of EIS sensors modified with negatively charged gold nanoparticles for the label-free electrostatic detection of positively charged small proteins and macromolecules, for monitoring the layer-by-layer formation of oppositely charged polyelectrolyte (PE) multilayers as well as for the development of an enzyme-based biomolecular logic gate. In the second part, examples of a label-free detection by means of EIS sensors modified with a positively charged weak PE layer are demonstrated. These include electrical detection of on-chip and in-solution hybridized DNA (deoxyribonucleic acid) as well as an EIS sensor with pH-responsive weak PE/enzyme multilayers for enhanced field-effect biosensing.},
  language  = {en}
}