Sub-50-ns ultrafast upconversion luminescence of a rare-earth-doped nanoparticle

Plate-Like Colloidal Metal Nanoparticles

“…(D) Tilted-nanocavity-coupled system comprising an upconverting nanoparticle embedded in the nanogap between an Ag nanocube (AgNC) and an Ag microplate (AgMP). Reproduced with permission from ref . Copyright 2022 Springer Nature.…”

“…For example, Wang et al used Au nanoplates as the basis of a NPoM system to demonstrate different charge tunneling behaviors of insulating and conductive molecular junctions, as evidenced through the single-particle scattering spectra of the plasmonic heterodimers . In another recent example, Xu et al embedded single up-conversion nanoparticles in the nanogap of a tilted-nanocavity-coupled system using Ag microplates as substrates (Figure D), which enabled sub-50 ns ultrafast upconversion luminescence with directionality and chirality . Because these systems are extremely sensitive to the nanometer gaps, atomically flat plasmonic nano- and microplates are highly desired for eliminating the perturbative effects from the rough surfaces of conventional metal thin films.…”

“…467 In another recent example, Xu et al embedded single up-conversion nanoparticles in the nanogap of a tiltednanocavity-coupled system using Ag microplates as substrates (Figure 27D), which enabled sub-50 ns ultrafast upconversion luminescence with directionality and chirality. 483 Because these systems are extremely sensitive to the nanometer gaps, atomically flat plasmonic nano-and microplates are highly desired for eliminating the perturbative effects from the rough surfaces of conventional metal thin films. Similar systems can be further extended to study photoluminescence, photocatalysis, SERS, and coherent nonlinear processes.…”

Plasmon driven nanocrystal transformation in low temperature environments

“…Nanotechnology has been widely adopted and expanded in modern commercial products, and nanomaterials have become the key support for the application of nanotechnology in food and agriculture, [1][2][3] biomedicine, [4][5][6] the environment, [7][8][9] energy, [10][11][12] optoelectronics [13][14][15] and other fields. [16][17][18][19] The preparation of high-performance and multifunctional composite nanomaterials as well as their preparation in extreme environments is crucial for the development of nanotechnology and the expansion of its applications. Traditional heat treatment methods, such as heating, annealing, and quenching, can be used to control the structure and eliminate defects to optimize the physical and chemical properties of the material.…”

Plasmon‐Assisted Self‐Encrypted All‐Optical Memory

“…[10][11][12][13] In particular, RE-doped yttrium oxide crystals that exhibit optical transitions with narrow and well-resolved lines, extraordinary stability without blinking represent a technologically useful class of materials with applications spanning from photonics to quantum information processing, laser media, protective coatings, scintillators, and phosphors. [14][15][16] Harnessing the extraordinary photoluminescence stability and ultranarrow spectral linewidths of RE dopants for data storage technologies is an appealing option with potential performance unrivalled by other photochromic materials, which will offer great potential in next-generation all-optical data storage, photo switching, and anti-counterfeiting. [17][18][19] As a relatively new endeavour, advancing RE dopants in all-optical data storage faces a series of challenges, including effective combination of a stimuli-responsive function with RE ion luminescence.…”