Skip to main content
eScholarship
Open Access Publications from the University of California

UC Riverside

UC Riverside Electronic Theses and Dissertations bannerUC Riverside

MoS2 Heterostructures Based Biosensors

No data is associated with this publication.
Abstract

Two-dimensional (2D) nanomaterials have significantly advanced biosensor technology. Their unique properties enable highly sensitive and specific biomolecule detection, streamlining diagnostics and environmental monitoring with their rapid and efficient capabilities. In this research, we conducted a comprehensive investigation into the development and optimization of flexible optoelectronic biosensors using 2D molybdenum disulfide (MoS2) for the rapid selective detection of biomolecules. Through a series of experimental studies, we explored innovative strategies that leverage the unique photoresponse characteristics of MoS2 and the electrical conductivity of graphene to enhance biosensor performance. In the first part of our study, we introduced a MoS2-based optoelectronic biosensor that demonstrates significantly improved sensitivity and selectivity under photonic excitation. Following this, we extend this approach by integrating MoS2 with graphene electrodes to address conductivity limitations, resulting in a hybrid optoelectronic biosensor with superior sensitivity. Our research further advanced by examining vertical heterostructures of MoS2 and graphene, presenting two configurations that optimize biomolecule sensing capabilities. Our findings reveal that biofunctionalized MoS2 platforms and MoS2 and graphene heterostructures Field-Effect Transistors (FETs) achieve high sensitivity and specificity, significantly advancing biosensor technology. These innovations offer fresh perspectives and methods to boost biosensor performance, paving the way for health and environmental breakthroughs.

Main Content

This item is under embargo until May 1, 2026.