Graphene Field-Effect Transistors With High Extrinsic ${f}_{T}$ and ${f}_{\mathrm{max}}$

Autor: Xinxin Yang, Daniel Neumaier, Jan Stake, Luca Banszerus, Christoph Stampfer, Marlene Bonmann, Andrey Generalov, Andrei Vorobiev, Muhammad Asad, Martin Otto

Publikováno v: IEEE Electron Device Letters. 40:131-134

In this letter, we report on the performance of graphene field-effect transistors (GFETs) in which the extrinsic transit frequency ( ${f}_{T}$ ) and maximum frequency of oscillation ( ${f}_{\text {max}}$ ) showed improved scaling behavior with respec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2adf41a0913e9a1ac5cc3de70351825e
https://doi.org/10.1109/led.2018.2884054

Direct nanoscopic observation of plasma waves in the channel of a graphene field-effect transistor

Autor: Lukas M. Eng, Stephan Winnerl, Andrei Vorobiev, Dovilė Čibiraitė, Marlene Bonmann, Florian Ludwig, Jan Stake, Andrey Generalov, Matthias M. Wiecha, Frederik Walla, Frederik Kuschewski, Hartmut G. Roskos, Amin Soltani, Susanne C. Kehr

Publikováno v: Light, Science & Applications
Light: Science & Applications, Vol 9, Iss 1, Pp 1-7 (2020)
Soltani, A, Kuschewski, F, Bonmann, M, Generalov, A, Vorobiev, A, Ludwig, F, Wiecha, M M, Čibiraitė, D, Walla, F, Winnerl, S, Kehr, S C, Eng, L M, Stake, J & Roskos, H G 2020, ' Direct nanoscopic observation of plasma waves in the channel of a graphene field-effect transistor ', Light: Science and Applications, vol. 9, no. 1, 97 . https://doi.org/10.1038/s41377-020-0321-0

Plasma waves play an important role in many solid-state phenomena and devices. They also become significant in electronic device structures as the operation frequencies of these devices increase. A prominent example is field-effect transistors (FETs)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4bb1cdbabcfecb2a624000bdc4bcf8a
http://publikationen.ub.uni-frankfurt.de/files/54321/s41377-020-0321-0.zip

Does carrier velocity saturation help to enhance fmax in graphene field-effect transistors?

Autor: Marlene Bonmann, Francisco Pasadas, Daniel Neumaier, Martin Otto, Jan Stake, David Jiménez, Xinxin Yang, P. C. Feijoo, Andrey Generalov, Andrei Vorobiev, Muhammad Asad, Christoph Stampfer, Luca Banszerus

Publikováno v: Nanoscale Advances
Nanoscale Advances (2516-0230)
Nanoscale advances 2(9), 4179-4186 (2020). doi:10.1039/C9NA00733D
Nanoscale Advances vol.2(2020)

It has been argued that current saturation in graphene field-effect transistors (GFETs) is needed to get the highest possible maximum oscillation frequency (fmax). This paper numerically investigates whether velocity saturation can help to get better

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f7930ad25dcd4de3fc14133c5c30789
http://arxiv.org/abs/1910.08304

Design of a Dielectric Rod Waveguide Antenna Array for Millimeter Waves

Autor: Kerlos Atia Abdalmalak, Alejandro Garcia-Lamperez, Dmitri Lioubtchenko, Luis Enrique Garcia-Munoz, Andrey Generalov, Sergio Llorente-Romano, Alejandro Rivera-Lavado, Daniel Segovia-Vargas, Antti V. Räisänen

Publikováno v: Journal of Infrared, Millimeter, and Terahertz Waves. 38:33-46

In this manuscript, the use of dielectric rod waveguide (DRW) antennas in the millimeter and sub-millimeter wave range is presented as a solution for covering two issues: getting more radiated power and filling a technological gap problem in the tera

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ed9c8148df024daf49df5fbd561a1bb
https://doi.org/10.1007/s10762-016-0310-9

Extreme Asymmetry in Metasurfaces via Evanescent Fields Engineering: Angular-Asymmetric Absorption

Autor: Andrey Generalov, Xuchen Wang, Viktar Asadchy, Ana Díaz-Rubio, Juha Ala-Laurinaho, G. A. Ptitcyn, Sergei A. Tretyakov

Publikováno v: Physical review letters. 121(25)

On the quest towards full control over wave propagation, the development of compact devices that allow asymmetric response is a challenge. In this Letter, we introduce a new paradigm for the engineering of asymmetry in planar structures, revealing an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbec027687adfba0852e9e6206454736
https://pubmed.ncbi.nlm.nih.gov/30608817