Characterizing and controlling infrared phonon anomaly of bilayer graphene in optical-electrical force nanoscopy

Autor: Junghoon Jahng, Sunho Lee, Seong-Gu Hong, Chang Jun Lee, Sergey G. Menabde, Min Seok Jang, Dong-Hyun Kim, Jangyup Son, Eun Seong Lee

Publikováno v: Light: Science & Applications, Vol 12, Iss 1, Pp 1-11 (2023)

Abstract We, for the first time, report the nanoscopic imaging study of anomalous infrared (IR) phonon enhancement of bilayer graphene, originated from the charge imbalance between the top and bottom layers, resulting in the enhancement of E1u mode o

Externí odkaz: https://doaj.org/article/ef0d8fb075654febba9fd9de61b5d663

Temperature-Dependent Plasmonic Response of Graphene Nanoresonators

Autor: Junhyung Kim, Geonwoo Lee, Sergey G. Menabde, Yong Jai Cho, Carsten Rockstuhl, Min Seok Jang

Publikováno v: ACS Photonics. 9:2256-2262

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f07689018376e1d1b15641c32dd6b55
https://doi.org/10.1021/acsphotonics.1c01966

Near-field probing of image phonon-polaritons in hexagonal boron nitride on gold crystals

Autor: Sergey G. Menabde, Sergejs Boroviks, Jongtae Ahn, Jacob T. Heiden, Kenji Watanabe, Takashi Taniguchi, Tony Low, Do Kyung Hwang, N. Asger Mortensen, Min Seok Jang

Publikováno v: Science Advances. 8

Near-field mapping has been widely used to study hyperbolic phonon-polaritons in van der Waals crystals. However, an accurate measurement of the polaritonic loss remains challenging because of the inherent complexity of the near-field signal and the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4307424f4274c263d1331fe8450f12be
https://doi.org/10.1126/sciadv.abn0627

Image polaritons in van der Waals crystals

Autor: Sergey G. Menabde, Jacob T. Heiden, Joel D. Cox, N. Asger Mortensen, Min Seok Jang

Publikováno v: Menabde, S G, Heiden, J T, Cox, J D, Mortensen, N A & Jang, M S 2022, ' Image polaritons in van der Waals crystals ', Nanophotonics, vol. 11, no. 11, pp. 2433–2452 . https://doi.org/10.1515/nanoph-2021-0693

Polaritonic modes in low-dimensional materials enable strong light–matter interactions and the manipulation of light on nanometer length scales. Very recently, a new class of polaritons has attracted considerable interest in nanophotonics: image po

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32cd6bd7b0f8271d74994eb72368c776
https://orbit.dtu.dk/en/publications/0984f411-5757-46a7-a873-4fd21b4c1155

Ultracompact electro-optic waveguide modulator based on a graphene-covered λ/1000 plasmonic nanogap

Autor: Shinho Kim, Tony Low, Min Seok Jang, Sergey G. Menabde, Joel D. Cox

Publikováno v: Kim, S, Menabde, S G, Cox, J D, Low, T & Jang, M S 2021, ' Ultracompact electro-optic waveguide modulator based on a graphene-covered λ/1000 plasmonic nanogap ', Optics Express, vol. 29, no. 9, pp. 13852-13863 . https://doi.org/10.1364/OE.423691

The extreme field confinement and electro-optic tunability of plasmons in graphene make it an ideal platform for compact waveguide modulators, with device footprints aggressively scaling orders of magnitude below the diffraction limit. The miniaturiz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42dcc565fcdcd2e391845d6e63853ff9
https://findresearcher.sdu.dk:8443/ws/files/182666109/oe_29_9_13852.pdf