Noise in carbon nanotube field effect transistor

Liu, Fei; Wang, Kang L.; Zhang, Daihua; Zhou, Chongwu

doi:10.1063/1.2335777

Cited by 46 publications

(47 citation statements)

References 12 publications

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“…Experiments with CNTs in air versus vacuum suggest that charge fluctuations of adsorbed atmospheric contaminants on the surface of the CNT cause 1/f noise [23]. There are several possible causes of the residual 1/f in the current noise spectra after irradiation.…”

Section: Fourier Analysis Of the Drain Current Noisementioning

confidence: 99%

Single Event Effects in Carbon Nanotube-Based Field Effect Transistors Under Energetic Particle Radiation

Bushmaker

Walker

Mann

et al. 2014

IEEE Trans. Nucl. Sci.

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We present results from proton radiation experiments with carbon nanotube field effect transistors. Single event effects were observed consisting of drops in current, with very long durations (100 s of ms), and sudden, discrete switching events between quantized current levels. These studies are important for the development and understanding of advanced nano-electronic devices operating in the space radiation environment.Index Terms-Carbon nanotube, field effect transistor (FET), proton radiation, single event effects (SEEs).

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Section: Fourier Analysis Of the Drain Current Noisementioning

confidence: 99%

Single Event Effects in Carbon Nanotube-Based Field Effect Transistors Under Energetic Particle Radiation

Bushmaker

Walker

Mann

et al. 2014

IEEE Trans. Nucl. Sci.

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“…However, the total amount of noise in the in the CNT-based sensor system is highly dependent on a number of sources related to the design of the sensor system and the conditions under which the sensor is manufactured and tested. For example, the amount of flicker noise in the sensor is higher when the sensor is exposed to the environment compared to when it is tested in a vacuum [8]. This indicates that molecules that are absorbed onto the surface of the CNT can act as extra scattering sites and significantly increase the noise in the sensor [9].…”

Section: Introductionmentioning

confidence: 93%

Nanomanufacturing Methods for the Reduction of Noise in Carbon Nanotube-Based Piezoresistive Sensor Systems

Cullinan

Culpepper

2013

Journal of Micro and Nano-Manufacturing

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Carbon nanotube (CNT)-based piezoresistive strain sensors have the potential to outperform traditional silicon-based piezoresistors in MEMS devices due to their high strain sensitivity. However, the resolution of CNT-based piezoresistive sensors is currently limited by excessive 1/f or flicker noise. In this paper, we will demonstrate several nanomanufacturing methods that can be used to decrease noise in the CNT-based sensor system without reducing the sensor's strain sensitivity. First, the CNTs were placed in a parallel resistor network to increase the total number of charge carriers in the sensor system. By carefully selecting the types of CNTs used in the sensor system and by correctly designing the system, it is possible to reduce the noise in the sensor system without reducing sensitivity. The CNTs were also coated with aluminum oxide to help protect the CNTs from environmental effects. Finally, the CNTs were annealed to improve contact resistance and to remove adsorbates from the CNT sidewall. The optimal annealing conditions were determined using a design-of-experiments (DOE). Overall, using these noise mitigation techniques it is possible to reduce the total noise in the sensor system by almost 3 orders of magnitude and increase the dynamic range of the sensors by 48 dB.

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“…However, the total amount of noise in the in the CNT-based sensor system is highly dependent on a number of sources related to the design of the sensor system and the conditions under which the sensor is manufactured and tested. For example, the amount of flicker noise in the sensor is higher when the sensor is exposed to the environment compared to when it is tested in a vacuum [5]. This indicates that molecules that are absorbed onto the surface of the CNT can act as extra scattering sites and significantly increase the noise in the sensor [6].…”

Section: Introductionmentioning

confidence: 96%

Noise Mitigation Techniques for Carbon Nanotube-Based Piezoresistive Sensor Systems

Cullinan

Culpepper

2011

MRS Proc.

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Carbon nanotube (CNT)-based piezoresistive strain sensors have the potential to outperform traditional silicon-based piezoresistors in MEMS devices due to their high strain sensitivity. However, the resolution of CNT-based piezoresistive sensors is currently limited by excessive 1/f or flicker noise. In this paper we will demonstrate several noise mitigation techniques that can be used to decrease noise in the CNT-based sensor system without reducing the sensor's strain sensitivity. First, the CNTs were placed in a parallel resistor network to increase the total number of charge carriers in the sensor system. By carefully selecting the types of CNTs used in the sensor system and by correctly designing the system it is possible to reduce the noise in the sensor system without reducing sensitivity. The CNTs were also coated with aluminum oxide to help protect the CNTs from environmental variations. Finally, the CNTs were annealed to improve contact resistance and to remove adsorbates from the CNT sidewall. Overall, using these noise mitigation techniques it is possible to reduce the total noise in the sensor system by almost two orders of magnitude and increase the dynamic range of the sensors by 29 dB.

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Noise in carbon nanotube field effect transistor

Cited by 46 publications

References 12 publications

Single Event Effects in Carbon Nanotube-Based Field Effect Transistors Under Energetic Particle Radiation

Single Event Effects in Carbon Nanotube-Based Field Effect Transistors Under Energetic Particle Radiation

Nanomanufacturing Methods for the Reduction of Noise in Carbon Nanotube-Based Piezoresistive Sensor Systems

Noise Mitigation Techniques for Carbon Nanotube-Based Piezoresistive Sensor Systems

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