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Showing 1–7 of 7 results

Advanced filters: Author: Angel Fernandez-Bravo Clear advanced filters

Low threshold lasing emissions from a single upconversion nanocrystal

Cross-relaxation between neighbouring emitters usually limits the brightness of luminescence due to self-quenching. Here, the authors present single upconversion nanoparticle lasing where the cross relaxation modulates the brightness and ultra-low threshold lasing is achieved.

Yunfei Shang
Jiajia Zhou
Dayong Jin
ResearchOpen Access01 Dec 2020
Nature Communications

Volume: 11, P: 1-7
Continuous-wave upconverting nanoparticle microlasers

Energy-looping excitation in lanthanide-doped upconverting nanoparticles enables low-threshold continuous-wave lasing in stand-alone microcavities.

Angel Fernandez-Bravo
Kaiyuan Yao
P. James Schuck
Research18 Jun 2018
Nature Nanotechnology

Volume: 13, P: 572-577
Ultralow-threshold, continuous-wave upconverting lasing from subwavelength plasmons

Plasmonic array nanolasers with Yb³⁺/Er³⁺-co-doped upconverting nanoparticles exhibit directional single-mode emission, with ultra-stable output over hours and with ultralow-threshold under continuous-wave pumping.

Angel Fernandez-Bravo
Danqing Wang
Teri W. Odom
Research23 Sept 2019
Nature Materials

Volume: 18, P: 1172-1176
Giant nonlinear optical responses from photon-avalanching nanoparticles

Room-temperature photon avalanching realized in single thulium-doped upconverting nanocrystals enables super-resolution imaging at near-infrared wavelengths of maximal biological transparency and provides a material platform potentially suitable for other optical technologies.

Changhwan Lee
Emma Z. Xu
P. James Schuck
Research13 Jan 2021
Nature

Volume: 589, P: 230-235
Low irradiance multiphoton imaging with alloyed lanthanide nanocrystals

By using a near-IR optical excitation, upconverting nanoparticles may enable high-resolution imaging deep in tissue. Here, Tian et al. introduce alloyed upconverting nanoparticles with improved brightness due to newly described energy transfer pathways.

Bining Tian
Angel Fernandez-Bravo
Bruce E. Cohen
ResearchOpen Access06 Aug 2018
Nature Communications

Volume: 9, P: 1-8
Impact of SARS-CoV-2 infection therapies on the risk of venous thromboembolism and cardiovascular events from the SEMI-COVID-19 Registry

Crhistian-Mario Oblitas
Pablo Demelo-Rodríguez
Hector Meijide Míguez
ResearchOpen Access05 Mar 2025
Scientific Reports

Volume: 15, P: 1-13
Mortality reduction in older COVID-19-patients hospitalized in Spain during the second pandemic wave from the SEMI-COVID-19 Registry

José-Manuel Casas-Rojo
Juan-Miguel Antón-Santos
Hector Meijide Míguez
ResearchOpen Access18 Oct 2023
Scientific Reports

Volume: 13, P: 1-18