Experimental advances in charge and spin transport in chemical vapor deposited graphene

H Mishra, J Panda, M Ramu, T Sarkar… - Journal of Physics …, 2021 - iopscience.iop.org
Despite structural and processing-induced imperfections, wafer-scale chemical vapor
deposited (CVD) graphene today is commercially available and has emerged as a versatile …

Ultimate spin currents in commercial chemical vapor deposited graphene

J Panda, M Ramu, O Karis, T Sarkar, MV Kamalakar - ACS nano, 2020 - ACS Publications
Establishing ultimate spin current efficiency in graphene over industry-standard substrates
can facilitate research and development exploration of spin current functions and spin …

Terahertz Sources Based on Metrological‐Grade Frequency Combs

E Riccardi, V Pistore, L Consolino… - Laser & Photonics …, 2023 - Wiley Online Library
Broadband metrological‐grade frequency comb (FC) synthesizers with a rich number of
phase locked modes are the ideal sources for quantum sensing and quantum metrology. At …

Case studies of electrical characterisation of graphene by terahertz time-domain spectroscopy

PR Whelan, B Zhou, O Bezencenet… - 2D …, 2021 - iopscience.iop.org
Graphene metrology needs to keep up with the fast pace of developments in graphene
growth and transfer. Terahertz time-domain spectroscopy (THz-TDS) is a non-contact, fast …

Mapping nanoscale carrier confinement in polycrystalline graphene by terahertz spectroscopy

PR Whelan, D De Fazio, I Pasternak, JD Thomsen… - Scientific Reports, 2024 - nature.com
Terahertz time-domain spectroscopy (THz-TDS) can be used to map spatial variations in
electrical properties such as sheet conductivity, carrier density, and carrier mobility in …

Non-linear conductivity response of graphene on thin-film pet characterized by transmission and reflection air-plasma THz-TDS

B Zhou, M Rasmussen, PR Whelan, J Ji… - Sensors, 2023 - mdpi.com
We demonstrate that the conductivity of graphene on thin-film polymer substrates can be
accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy …

Calibration of fermi velocity to explore the plasmonic character of graphene nanoribbon arrays by a semi-analytical model

T Tene, M Guevara, E Viteri, A Maldonado, M Pisarra… - Nanomaterials, 2022 - mdpi.com
We present an analysis of the electronic and plasmonic behavior of periodic planar
distributions of sufficiently wide graphene nanoribbons, for which a thorough ab initio …

Proving surface plasmons in graphene nanoribbons organized as 2D periodic arrays and potential applications in biosensors

T Tene, M Guevara, J Svozilík, D Coello-Fiallos… - Chemosensors, 2022 - mdpi.com
Surface-plasmon-based biosensors have become excellent platforms for detecting
biomolecular interactions. While there are several methods to exciting surface plasmons, the …

Symmetric graphene dielectric nanowaveguides as ultra-compact photonic structures

D Teng, Y Wang, T Xu, H Wang, Q Shao, Y Tang - Nanomaterials, 2021 - mdpi.com
A symmetric graphene plasmon waveguide (SGPWG) is proposed here to achieve excellent
subwavelength waveguiding performance of mid-infrared waves. The modal properties of …

Reference-free THz-TDS conductivity analysis of thin conducting films

PR Whelan, Q Shen, D Luo, M Wang, RS Ruoff… - Optics …, 2020 - opg.optica.org
We present a reference-free method to determine electrical parameters of thin conducting
films by steady state transmission-mode terahertz time-domain spectroscopy (THz-TDS). We …