abstract

• In this paper, we present a hybrid semiconductor structure for biosensing applications that features the co-integration of nanoelectromechanical systems with the well-known metal oxide semiconductor technology. The proposed structure features an MOSFET as a readout element, and a doubly clamped beam that is isolated from the substrate by a thin air gap, as well as by a tunnel oxide layer. The beam structure is functionalised by a thin layer of biotargets, and the main aim is to detect a particular set of biomolecules, such as enzymes, bacteria, viruses, and DNA/RNA chains, among others. In here, a three-dimensional finite element analysis is performed in order to study the behaviour of the functionalised, doubly clamped beam. Preliminary results for the fabrication and characterisation processes show good agreement between the simulated and measured characteristics. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

authors

• Bello Jiménez Miguel Ángel
• Garcia Ramirez M.A.

publication date

• 2022-01-01

funding provided via

• PRODEP grant number 252831; Consejo Nacional de Ciencia y Tecnología, CONACYT  Grant

published in

• Sensors  Journal

keywords

• Fabrication process; Hybrid semiconductor structure; Iosensors; NEMS/MEMS; Numeri-cal analysis Biomolecules; Electron beam lithography; Fabrication; MOS devices; Oxide semiconductors; Semiconductor device manufacture; Viruses; Doubly clamped beam; Fabrication and characterizations; Fabrication process; Functionalized; Hybrid semiconductor structure; Iosensor; Label free; NEMS/MEMS; Numeri-cal analyse; Semiconductor structure; Metals; DNA; oxide; chemistry; semiconductor; DNA; Oxides; Semiconductors

Digital Object Identifier (DOI)

• 10.3390/s22051806

PubMed ID

• 35270953

start page

end page

volume

• 22

issue

• 5