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Yogesh Kumar Srivastava (Nanyang Technological University)

Appointment: Research Fellow

Research topics:

• Superconductors
• Terahertz spectroscopy
• Fano resonance
• Low dimensional materials

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1 to 7 of 7 Results
Mar 3, 2021
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Cong, Longqing; Cao, Wei; Al-Naib, Ibraheem; Zhang, Weili; Singh, Ranjan, 2021, "Replication Data for: Ultrahigh‐Q Fano Resonances in Terahertz Metasurfaces: Strong Influence of Metallic Conductivity at Extremely Low Asymmetry", https://doi.org/10.21979/N9/WTJGUL, DR-NTU (Data), V1
Fano resonances in metasurfaces are important due to their low loss subradiant behavior that allows excitation of high‐quality (Q) factor resonances extending from the microwave to the optical regime. High‐Q Fano resonances have recently enabled applications in the areas of sensi...
Mar 3, 2021
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Krishnamoorthy, Harish N. S.; Singh, Ranjan, 2021, "Replication Data for: Accessing the High‐Q Dark Plasmonic Fano Resonances in Superconductor Metasurfaces", https://doi.org/10.21979/N9/CURM5C, DR-NTU (Data), V1
Superconducting metamaterials at terahertz frequencies has provided a platform for designing switchable plasmonic metamaterial devices. However, since metals at terahertz frequencies are excellent conductors, the superior role of superconductors in designing low‐loss, high qualit...
May 15, 2020
Srivastava, Yogesh Kumar; Singh, Ranjan, 2020, "Replication Data for: Impact of conductivity on Lorentzian and Fano resonant high-Q THz metamaterials: Superconductor, metal and perfect electric conductor", https://doi.org/10.21979/N9/AWKV0V, DR-NTU (Data), V1
High temperature superconductors have created exciting opportunities for switchable metamaterial and plasmonic devices operating at terahertz frequencies. In recent times, there have been several demonstrations using superconducting metamaterials, such as thermal, electrical, mag...
May 14, 2020
Srivastava, Yogesh Kumar; Ako, Rajour Tanyi; Gupta, Manoj; Bhaskaran, Madhu; Sriram, Sharath; Singh, Ranjan, 2020, "Replication Data for: Terahertz sensing of 7 nm dielectric film with bound states in the continuum metasurfaces", https://doi.org/10.21979/N9/45EWUQ, DR-NTU (Data), V1
The fingerprint spectral response of several materials with terahertz electromagnetic radiation indicates that terahertz technology is an effective tool for sensing applications. However, sensing few nanometer thin-films of dielectrics with much longer terahertz waves (1 THz = 0....
May 11, 2020
Srivastava, Yogesh Kumar; Manjappa, Manukumara; Cong, Longqing; Krishnamoorthy, Harish N. S.; Savinov, Vassili; Pitchappa, Prakash; Singh, Ranjan, 2020, "Replication Data for: A superconducting dual-channel photonic switch", https://doi.org/10.21979/N9/L6ILCD, DR-NTU (Data), V1
The mechanism of Cooper pair formation and its underlying physics has long occupied the investigation into high temperature (high-Tc ) cuprate superconductors. One of the ways to unravel this is to observe the ultrafast response present in the charge carrier dynamics of a photoex...
May 11, 2020
Srivastava, Yogesh Kumar; Cong, Longqing; Singh, Ranjan, 2020, "Replication Data for: Dual-surface flexible THz Fano metasensor", https://doi.org/10.21979/N9/MUB6QV, DR-NTU (Data), V1
Sensing technologies based on terahertz waves have immense potential due to their non-destructive, transparent, and fingerprint spectral response of several materials that are opaque to other parts of the electromagnetic spectrum. Terahertz metasensors reported so far merely expl...
May 11, 2020
Srivastava, Yogesh Kumar; Chaturvedi, Apoorva; Manjappa, Manukumara; Kumar, Abhishek; Dayal, Govind; Kloc, Christian; Singh, Ranjan, 2020, "Replication Data for: MoS2 for Ultrafast All‐Optical Switching and Modulation of THz Fano Metaphotonic Devices", https://doi.org/10.21979/N9/K3QYIF, DR-NTU (Data), V1
In recent years, the stunning performance of transition metal dichalcogenides (TMDCs) has been utilized in the area of field effect transistors, integrated circuits, photodetectors, light generation and harvesting, valleytronics, and van der Waals (vdW) heterostructures. However,...
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