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Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation.
Taboada-Gutiérrez J, Álvarez-Pérez G, Duan J, Ma W, Crowley K, Prieto I, Bylinkin A, Autore M, Volkova H, Kimura K, Kimura T, Berger MH, Li S, Bao Q, Gao XPA, Errea I, Nikitin AY, Hillenbrand R, Martín-Sánchez J, Alonso-González P. Taboada-Gutiérrez J, et al. Nat Mater. 2020 Sep;19(9):964-968. doi: 10.1038/s41563-020-0665-0. Epub 2020 Apr 13. Nat Mater. 2020. PMID: 32284598
Here, we demonstrate that intercalation of Na atoms in the van der Waals semiconductor alpha-V(2)O(5) enables a broad spectral shift of Reststrahlen bands, and that the phonon polaritons excited show ultra-low losses (lifetime of 4 1 ps), similar to phonon polaritons in a …
Here, we demonstrate that intercalation of Na atoms in the van der Waals semiconductor alpha-V(2)O(5) enables a broad spectral shift …
Nanoscale-Confined Terahertz Polaritons in a van der Waals Crystal.
de Oliveira TVAG, Nörenberg T, Álvarez-Pérez G, Wehmeier L, Taboada-Gutiérrez J, Obst M, Hempel F, Lee EJH, Klopf JM, Errea I, Nikitin AY, Kehr SC, Alonso-González P, Eng LM. de Oliveira TVAG, et al. Adv Mater. 2021 Jan;33(2):e2005777. doi: 10.1002/adma.202005777. Epub 2020 Dec 3. Adv Mater. 2021. PMID: 33270287
In this study, THz polaritons are visualized with: i) in-plane hyperbolic dispersion, ii) extreme nanoscale field confinement (below lambda(o) /75), and iii) long polariton lifetimes, with a lower limit of >2 ps....
In this study, THz polaritons are visualized with: i) in-plane hyperbolic dispersion, ii) extreme nanoscale field confinement (below lambda( …
Comprehensive use of cardiopulmonary exercise testing identifies adults with congenital heart disease at increased mortality risk in the medium term.
Inuzuka R, Diller GP, Borgia F, Benson L, Tay EL, Alonso-Gonzalez R, Silva M, Charalambides M, Swan L, Dimopoulos K, Gatzoulis MA. Inuzuka R, et al. Circulation. 2012 Jan 17;125(2):250-9. doi: 10.1161/CIRCULATIONAHA.111.058719. Epub 2011 Dec 6. Circulation. 2012. PMID: 22147905
During a median follow-up of 5.8 years, 117 patients died. Peak V(O(2)), heart rate reserve, and V(E)/V(O(2)) slope were related to midterm survival in adult patients with congenital heart disease. Risk of death increased with lower peak V(O(2)) and heart rat …
During a median follow-up of 5.8 years, 117 patients died. Peak V(O(2)), heart rate reserve, and V(E)/V(O(2)) slope were relat …
Extracting the Infrared Permittivity of SiO2 Substrates Locally by Near-Field Imaging of Phonon Polaritons in a van der Waals Crystal.
Aguilar-Merino P, Álvarez-Pérez G, Taboada-Gutiérrez J, Duan J, Prieto I, Álvarez-Prado LM, Nikitin AY, Martín-Sánchez J, Alonso-González P. Aguilar-Merino P, et al. Nanomaterials (Basel). 2021 Jan 7;11(1):120. doi: 10.3390/nano11010120. Nanomaterials (Basel). 2021. PMID: 33430225 Free PMC article.
Particularly, polar vdW crystals, such as hexagonal boron nitride (h-BN), alpha-molybdenum trioxide (alpha-MoO(3)) or alpha-vanadium pentoxide (alpha-V(2)O(5)), have received significant attention in nano-optics, since they support phonon polaritons (PhPs)-light coupled to …
Particularly, polar vdW crystals, such as hexagonal boron nitride (h-BN), alpha-molybdenum trioxide (alpha-MoO(3)) or alpha-vanadium pentoxi …