Cited by 32Gas Sensing Nanomaterials and SensorsElectrochemical sensors and biosensorsAnalytical Chemistry and Sensors

Nanoelectronic Heterodyne Sensor: A New Electronic Sensing Paradigm

Kulkarni, Girish S., Zang, Wenzhe, Zhong, Zhaohui·2016·Accounts of Chemical Research

Abstract

Nanoelectronic devices based on nanomaterials such as nanowires, carbon nanotubes, graphene, and other 2D nanomaterials offer extremely large surface-to-volume ratios, high carrier mobility, low power consumption, and high compatibility for integration with modern electronic technologies. These distinct advantages promise great potential for nanoelectronic devices as next generation chemical and biological sensors. Currently, majority of existing nanoelectronic sensors are direct current (DC) sensors, which rely ubiquitously on detection of conductance change associated with molecular adsorption. However, despite the simplicity of the conventional DC sensing technology, it also has severe limitations such as the Debye screening effect in ionic solutions, and the speed-sensitivity trade-off for the detection of charge-neutral molecules. Hence, the development of nanoelectronic sensors calls for new sensing platform technologies that can truly showcase the advantages of electronic sensors. In this Account, we will summarize recent efforts from our group on the development of a new electronic sensing paradigm, the nanoelectronic heterodyne sensors. Unlike conventional charge-detection based sensors, the heterodyne sensor explores the frequency mixing response between molecular dipoles and a nanoscale transistor. As an example, we first discuss the capability of heterodyne sensing in gas sensing applications by using graphene devices. Rapid (down to 0.1 s) and sensitive (down to 1 ppb) detection of a wide range of vapor analytes is achieved, representing orders of magnitude improvement over state-of-the-art nanoelectronic sensors. Furthermore, the heterodyne sensing technique enables electrical probing and tuning of the noncovalent physisorption of polar molecules on graphene surface for the first time. These results provide insight into small molecule-nanomaterial interaction dynamics and signify the ability to electrically tailor interactions, which can lead to rational designs of complex chemical processes for catalysis and drug discovery. Finally, we discuss the application of heterodyne sensing in solution for chemical and biological sensors by using carbon nanotube devices. The fundamental ionic screening effect can be mitigated by operating carbon nanotube field effect transistor as a heterodyne biosensor. Electrical detection of streptavidin binding to biotin in 100 mM buffer solution can be achieved at a frequency beyond 1 MHz. The results should promise a new biosensing platform for point-of-care detection, where biosensors functioning directly in physiologically relevant condition are desired.

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Crossref · 10.1021/acs.accounts.6b00329

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  • Kulkarni et al. developed a rapid (down to 0.1 s) and sensitive (down to 1 part per billion) nanoelectric graphene vapor sensor that can continuously monitor a wide range of vapor analytes from breath or the environment.

    “Kulkarni et al. developed a rapid (down to 0.1 s) and sensitive (down to 1 part per billion) nanoelectric graphene vapor sensor that can continuously monitor a wide range of vapor analytes (e.g., nitric oxide, oxygen) from breath or the environment to monitor for illness or harmful environmental exposures [150,151].”

    From Wearables and the Medical Revolution (2018) · cites this paper as [150]

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Authors
Kulkarni, G. S., Zang, W., & Zhong, Z.
Affiliations
University of Michigan (US)
Corresponding author
Zhong, Zhaohui
Venue
Accounts of Chemical Research
Published
2016-09-26
Volume
49
Issue
11
Pages
2578-2586
ISSN
  • 0001-4842 (ISSN-L)
  • 1520-4898
OpenAlex
W2524478725
Cited by
32
References
61
Citations by year
2025: 1 · 2024: 1 · 2023: 2 · 2022: 5 · 2021: 5 · 2020: 4 · 2019: 4 · 2018: 7 · 2017: 2 · 2016: 1
FWCI
2.15
Type
journal article
Language
en
Open access
closed
Locations
  • Accounts of Chemical Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Electrical, Communications and Cyber Systems (ECCS-1405870)
  • Division of Materials Research (DMR-1120187)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Gas Sensing Nanomaterials and Sensors
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
  • Physical Sciences › Chemical Engineering › Bioengineering › Analytical Chemistry and Sensors
Keywords
frequency mixing, molecular dipoles, graphene gas sensors, carbon nanotube field-effect transistors, polar molecule adsorption, Debye screening, ionic screening, biosensors, biotin-streptavidin binding, point-of-care detection, vapor sensing, nanomaterials
MeSH terms
Adsorption, Graphite, Ions, Transistors, Electronic, Biosensing Techniques, Nanotubes, Carbon, Nanostructures, Volatile Organic Compounds, Electrochemical Techniques, Electromagnetic Radiation

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