Ultra-sensitive gas phase detection of 2,4,6-trinitrotoluene by non-covalently functionalized graphene field effect transistors

Gajarushi, Ashwini S.; Surya, Sandeep G.; Walawalkar, Mrinalini G.; Ravikanth, Mangalampalli; Rao, V. Ramgopal; Subramaniam, Chandramouli

doi:10.1039/c9an01962f

Cited by 14 publications

(10 citation statements)

References 64 publications

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“…This is attributed to high performance and high yield requirements for electronics applications. The material platform for applications like flexible sensors, bioimplantable, and wearable applications is usually low-cost printed or transferred polycrystalline films of 2D materials 23 and therefore is reasonably matured.…”

Section: Unique and Wide Range Of Applications Of 2d Materialsmentioning

confidence: 99%

A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges

Shrivastava

Rao

2021

Nano Lett.

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This Mini Review attempts to establish a roadmap for two-dimensional (2D) material-based microelectronic technologies for future/disruptive applications with a vision for the semiconductor industry to enable a universal technology platform for heterogeneous integration. The heterogeneous integration would involve integrating orthogonal capabilities, such as different forms of computing (classical, neuromorphic, and quantum), all forms of sensing, digital and analog memories, energy harvesting, and so forth, all in a single chip using a universal technology platform. We have reviewed the state-of-the-art 2D materials such as graphene, transition metal dichalcogenides, phosphorene and hexagonal boron nitride, and so forth, and how they offer unique possibilities for a range of futuristic/disruptive applications. Besides, we have discussed the technological and fundamental challenges in enabling such a universal technology platform, where the world stands today, and what gaps are required to be filled.

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Section: Unique and Wide Range Of Applications Of 2d Materialsmentioning

confidence: 99%

A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges

Shrivastava

Rao

2021

Nano Lett.

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“…Conventional approaches to establish an effective interface between the receptor and transducer include self-assembly, covalent anchoring and electrostatic layer-by-layer assembly. [38][39][40] Such approaches often result in uncontrollable and non-uniform surface coverage of the receptor leading to variation in the number density of receptors. This has a direct bearing on the signal response and raises concerns in both quantification and reliability of the device.…”

Section: Resultsmentioning

confidence: 99%

Scalable approach towards specific and ultrasensitive cation sensing under harsh environmental conditions by engineering the analyte–transducer interface

Mondal

Subramaniam

2021

Nanoscale Adv.

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“…VOCs are organic chemicals that can vaporize at room temperature. ,, Notable progress has been made in developing sensitive and selective 2D FET sensors for detecting VOCs such as ethane, acetone, ethanol, isoprene, hexanoic acid, and so forth (Table ). − For example, Gajarushi et al developed a p-doped GFET sensor for the reliable detection of 2,4,6-trinitrotoluene (TNT) in the vapor phase. This advance was achieved by the noncovalent immobilization of 5-(4-hydroxyphenyl)-10,15,20-tri( p -tolyl)zinc porphyrin (ZnTTPOH) on the graphene surface.…”

Section: Chemical Sensorsmentioning

confidence: 99%

Section: Chemical Sensorsmentioning

confidence: 99%

Two-Dimensional Field-Effect Transistor Sensors: The Road toward Commercialization

2022

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The evolutionary success in information technology has been sustained by the rapid growth of sensor technology. Recently, advances in sensor technology have promoted the ambitious requirement to build intelligent systems that can be controlled by external stimuli along with independent operation, adaptivity, and low energy expenditure. Among various sensing techniques, field-effect transistors (FETs) with channels made of two-dimensional (2D) materials attract increasing attention for advantages such as label-free detection, fast response, easy operation, and capability of integration. With atomic thickness, 2D materials restrict the carrier flow within the material surface and expose it directly to the external environment, leading to efficient signal acquisition and conversion. This review summarizes the latest advances of 2D-materials-based FET (2D FET) sensors in a comprehensive manner that contains the material, operating principles, fabrication technologies, proof-of-concept applications, and prototypes. First, a brief description of the background and fundamentals is provided. The subsequent contents summarize physical, chemical, and biological 2D FET sensors and their applications. Then, we highlight the challenges of their commercialization and discuss corresponding solution techniques. The following section presents a systematic survey of recent progress in developing commercial prototypes. Lastly, we summarize the long-standing efforts and prospective future development of 2D FET-based sensing systems toward commercialization.

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Ultra-sensitive gas phase detection of 2,4,6-trinitrotoluene by non-covalently functionalized graphene field effect transistors

Abstract: Dirac point of non-covalently functionalized graphene field effect transistors has been demonstrated as a reliable parameter for rapid (∼40 s), reliable and ultra-sensitive (ppm-level) detection of 2,4,6-trinitrotoluene under ambient conditions.

Cited by 14 publications

References 64 publications

A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges

A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges

Scalable approach towards specific and ultrasensitive cation sensing under harsh environmental conditions by engineering the analyte–transducer interface

Two-Dimensional Field-Effect Transistor Sensors: The Road toward Commercialization

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