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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Bio-Nano Interfaces and Engineering Applications
Presentation Title Bio-imaging with Photoluminescence of Single-layer MoS2
Author(s) Yuhei Hayamizu
On-Site Speaker (Planned) Yuhei Hayamizu
Abstract Scope Visualizing biological activity in real time poses a novel way for biosensing. Single-layer Molybdenum disulfide (MoS2) shows strong photoluminescence (PL) under photo-excitation due to its semiconducting nature with direct bandgap. In this work, we demonstrate pH-sensitive photoluminescence of single-layer MoS2 grown by chemical vapor deposition (CVD). While CVD MoS2 grown from MoS2 powder did not have a strong pH sensitivity, MoS2 grown from MoO2 powder exhibited a sensitivity to the solution pH in its PL intensity. Next, we utilized the single-layer MoS2 as the active layer of an imaging sensor to monitor activity of individual bacteria by the MoS2 PL. For the demonstration, we employed Lactobacillus. It is one of the most studied probiotic bacteria which consumes glucose and produces lactic acid by fermentation. The bacteria were placed on a single-layer MoS2 and its PL intensity was monitored in real time.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Bio-imaging with Photoluminescence of Single-layer MoS2
Control of Scaffold Shear Forces Through a Perfusion Bioreactor for Design of Prostate Cancer Bone Metastasis Testbed
Detection of Limonene Using Graphene Field Effect Transistor Modified by Self-assembling Peptide
Developing Nanostructured Metals for Innovative Medical Implants with Improved Design and Biofunctionality
Enhancing Electrochemical Detection of Choline Using Molecularly Imprinted Polymer Electrode
Flexible-glass Like Coating onto PTFE Vascular Graft Material via Nonthermal Plasma Process
Insight into the Mechanobiological Progression of Cancer Metastasis to Bone
Stickiness at Bio-nano-interfaces: From Nanoscale Characterization to Macroscale Properties
The Mechanical Significance of Sublamellar Organization of Mineralized Collagen Fibrils

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