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Terahertz Performance of a GaN-Based Planar Nanochannel Device
Joint Authors
Xiong, Jianwen
Xu, K. Y.
Wang, G.
Wang, Y. N.
Zheng, C. J.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-03
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Using a combined two-dimensional-three-dimensional (2D-3D) ensemble Monte Carlo (EMC) model, the performance of a planar nanochannel device is studied at the terahertz (THz) region.
The device is based on a GaN/AlGaN heterostructure in which a two-dimensional electron gas (2DEG) forms at the interface.
Simulation results reveal that, at low working frequencies, the performance of the device is almost frequency independent.
However, when the working frequency is higher than 0.5 THz, obvious enhancements in the device performance have been observed.
The enhancements are characterized by two resonant peaks at frequencies of about 4 THz and 8 THz.
Also, the frequency-dependent performance exhibits nonmonotonicity.
Further studies show that the performance enhancements can be attributed to the excitations of 2D plasma waves in the device, with the emergence of the above resonant peaks corresponding to the formation of standing plasma waves.
Moreover, simulation results show that the device performance increases monotonically with signal amplitude, when the device is unbiased.
However, when a DC bias is applied, the performance remains almost unchanged for large signals but is significantly enhanced for small signals.
Therefore, the device performance shows a strong nonmonotonic dependence on signal amplitude, and its minimal value occurs when the signal amplitude is only about 2 times the DC bias.
American Psychological Association (APA)
Xu, K. Y.& Wang, Y. N.& Zheng, C. J.& Xiong, Jianwen& Wang, G.. 2014. Terahertz Performance of a GaN-Based Planar Nanochannel Device. Journal of Nanomaterials،Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-1041983
Modern Language Association (MLA)
Xu, K. Y.…[et al.]. Terahertz Performance of a GaN-Based Planar Nanochannel Device. Journal of Nanomaterials No. 2014 (2014), pp.1-5.
https://search.emarefa.net/detail/BIM-1041983
American Medical Association (AMA)
Xu, K. Y.& Wang, Y. N.& Zheng, C. J.& Xiong, Jianwen& Wang, G.. Terahertz Performance of a GaN-Based Planar Nanochannel Device. Journal of Nanomaterials. 2014. Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-1041983
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1041983