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Quartz Crystal Microbalance (QCM)-Based Nanosensors for the Detection of Pathogenic Bacteria

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Nanosensors for Point-of-Care Diagnostics of Pathogenic Bacteria

Abstract

This book chapter gives an overview of the quartz crystal microbalance sensor (QCM) and how it can be used to detect pathogenic bacteria. The QCM sensor can be assumed as a mechanical transducer for a biosensor device that converts target analytes’ mass into an electrical signal. The detection of microorganisms with a QCM sensor has applications in the environment, biomedical field, and food industry. The characteristics of QCM as a biosensor in the detection of bacterial pathogens are the subject of this book chapter. The chapter explains how QCM is used for bacteria testing and describes the procedures used. Nanoparticles have been widely used in combination with QCM for detection purposes. These nanoparticles are functionalized with different receptor molecules to give the target signal in presence of specific pathogenic bacteria. The use of modified nanoparticles is widely discussed along with various receptor molecules used for bacteria detection. Each receptor molecule results in different sensitivity and offers a range of limit of detection. Apart from its advantage, the limitation and future applications are also discussed.

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Abbreviations

Ab:

Antibody

Ag:

Antigen

Ag-Ab:

Antigen-antibody

Au:

Gold

CFU/mL:

Colony-forming units

HZ:

Hertz

LAMP:

Loop-mediated isothermal amplification

MHZ:

Megahertz

NC:

Negative control

NP:

Nanoparticle

PCR:

Polymerase chain reaction

PIT:

Photochemical immobilization technique

QCM:

Quartz crystal microbalance

QCN:

Quartz crystal nano-balance

SELEX:

Systematic evolution of ligands by exponential enrichment

ssDNA:

Single-stranded DNA

SPR:

Surface plasmon resonance

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Correspondence to Nitin Kumar Singhal .

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© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Priyadarshi, N., Singhal, N.K. (2023). Quartz Crystal Microbalance (QCM)-Based Nanosensors for the Detection of Pathogenic Bacteria. In: Acharya, A., Singhal, N.K. (eds) Nanosensors for Point-of-Care Diagnostics of Pathogenic Bacteria. Springer, Singapore. https://doi.org/10.1007/978-981-99-1218-6_7

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