Journal
BIOSENSORS-BASEL
Volume 11, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/bios11100397
Keywords
surface charge; nano; biosensor; computer simulation; COMSOL Multiphysics
Funding
- Russian Scientific Foundation [21-72-20029]
- Russian Science Foundation [21-72-20029] Funding Source: Russian Science Foundation
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The ionized states of molecular analytes on solid surfaces and their effects on output generation in a dynamic PIN diode were investigated using computer simulations. The study identified new possibilities for implementing a nanobiosensor design based on a dynamic PIN diode with surface charge control.
The ionized states of molecular analytes located on solid surfaces require profound investigation and better understanding for applications in the basic sciences in general, and in the design of nanobiosensors, in particular. Such ionized states are induced by the interactions of molecules between them in the analyzed substance and with the target surface. Here, computer simulations using COMSOL Multiphysics software show the effect of surface charge density and distribution on the output generation in a dynamic PIN diode with gate control. This device, having built-in potential barriers, has a unique internal integration of output signal generation. The identified interactions showed the possibility of a new design for implementing a nanobiosensor based on a dynamic PIN diode in a mode with surface charge control.
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