*Review* **Decadal Journey of CNT-Based Analytical Biosensing Platforms in the Detection of Human Viruses**

**Joydip Sengupta <sup>1</sup> and Chaudhery Mustansar Hussain 2,\***


**Abstract:** It has been proven that viral infections pose a serious hazard to humans and also affect social health, including morbidity and mental suffering, as illustrated by the COVID-19 pandemic. The early detection and isolation of virally infected people are, thus, required to control the spread of viruses. Due to the outstanding and unparalleled properties of nanomaterials, numerous biosensors were developed for the early detection of viral diseases via sensitive, minimally invasive, and simple procedures. To that aim, viral detection technologies based on carbon nanotubes (CNTs) are being developed as viable alternatives to existing diagnostic approaches. This article summarizes the advancements in CNT-based biosensors since the last decade in the detection of different human viruses, namely, SARS-CoV-2, dengue, influenza, human immunodeficiency virus (HIV), and hepatitis. Finally, the shortcomings and benefits of CNT-based biosensors for the detection of viruses are outlined and discussed.

**Keywords:** carbon nanotube (CNT); biosensor; virus; SARS-CoV-2; toxicity; biocompatibility

**Citation:** Sengupta, J.; Hussain, C.M. Decadal Journey of CNT-Based Analytical Biosensing Platforms in the Detection of Human Viruses. *Nanomaterials* **2022**, *12*, 4132. https://doi.org/10.3390/ nano12234132

Academic Editor: Muralidharan Paramsothy

Received: 13 November 2022 Accepted: 21 November 2022 Published: 23 November 2022

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