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Longqing Cong

Researcher at Nanyang Technological University

Publications -  64
Citations -  5188

Longqing Cong is an academic researcher from Nanyang Technological University. The author has contributed to research in topics: Terahertz radiation & Metamaterial. The author has an hindex of 31, co-authored 55 publications receiving 3792 citations. Previous affiliations of Longqing Cong include Tianjin University & Chinese Ministry of Education.

Papers
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Ultrasensitive terahertz sensing with high-Q Fano resonances in metasurfaces

Ranjan Singh, +5 more
- 27 Oct 2014 - 
TL;DR: In this paper, a planar terahertz metamaterial was used for ultra-sensitive sensing in the fingerprint region of the tera-hertz regime, where the low-loss quadrupole and Fano resonances with extremely narrow linewidths were used to measure the minute spectral shift caused due to the smallest change in the refractive index of the surrounding media.
Journal ArticleDOI

Experimental demonstration of ultrasensitive sensing with terahertz metamaterial absorbers: A comparison with the metasurfaces

Longqing Cong, +6 more
- 20 Jan 2015 - 
TL;DR: In this article, the authors demonstrate a metamaterial absorber based ultra-sensitive sensing scheme at the terahertz frequencies with significantly enhanced sensitivity and an order of magnitude higher figure of merit compared to planar metasurfaces.
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Ultrasensitive THz sensing with high-Q Fano resonances in metasurfaces

Ranjan Singh, +5 more
- 27 Jun 2014 - 
TL;DR: In this article, a planar terahertz metamaterial has been used for ultra-sensitive sensing with high quality factor resonances in order to measure the minute spectral shift caused by the smallest change in the refractive index of the surrounding media.
Journal ArticleDOI

A perfect metamaterial polarization rotator

Longqing Cong, +7 more
- 22 Oct 2013 - 
TL;DR: In this paper, a unique approach to efficiently rotate the linear polarization of terahertz wave in a broadband configuration with tri-layer metasurfaces was proposed, where the Fabry-Perot cavity effect was attributed to the underlying mechanism of high transmittance and polarization rotation.
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Highly flexible broadband terahertz metamaterial quarter-wave plate

Longqing Cong, +10 more
- 01 Jul 2014 - 
TL;DR: In this article, a high efficiency, broadband, tunable and flexible quarter-wave plate based on a multilayer metamaterial is presented, with excellent achromatic π/2 phase retardance with high transmission.