Color tuning in a compact core-shell nanocrystal based on intense and high-purity green and red photon upconversion

2021 ◽  
Vol 46 (4) ◽  
pp. 900
Author(s):  
Ziwen Zhou ◽  
Yu Liu ◽  
Xianhao Sun ◽  
Li Xu ◽  
Fahim Khan ◽  
...  
Keyword(s):  
High Purity ◽  
Core Shell ◽  
Color Tuning

Plasmonic Dual‐Enhancement and Precise Color Tuning of Gold Nanorod@SiO 2 Coupled Core–Shell–Shell Upconversion Nanocrystals

2017 ◽  
Vol 27 (36) ◽  
pp. 1701842 ◽  
Author(s):  
Fengwen Kang ◽  
Jijun He ◽  
Tianying Sun ◽  
Zhi Yong Bao ◽  
Feng Wang ◽  
...  
Keyword(s):  
Gold Nanorod ◽  
Core Shell ◽  
Color Tuning ◽  
Upconversion Nanocrystals

scholarly journals Continuous Gas-phase Synthesis of Core-shell Nanoparticles via Surface Segregation

2021 ◽  
Author(s):  
Markus Snellman ◽  
Namsoon Eom ◽  
Martin Ek ◽  
Maria E Messing ◽  
Knut Deppert
Keyword(s):  
Chemical Synthesis ◽  
Gas Phase ◽  
High Throughput ◽  
High Purity ◽  
Surface Segregation ◽  
Core Shell ◽  
Synthesis Methods ◽  
Shell Nanoparticles ◽  
Phase Synthesis ◽  
Core Shell Nanoparticles

Synthesis methods of highly functional core@shell nanoparticles with high throughput and high purity are in great demand for applications, including catalysis and optoelectronics. Traditionally chemical synthesis has been widely explored,...

Realization of fluorescence color tuning for poly(p-phenylenevinylene) coated microspheres via a heterogeneous catalytic thermal elimination process

2015 ◽  
Vol 6 (9) ◽  
pp. 1576-1583 ◽  
Author(s):  
Yun Chen ◽  
Tian Qiu ◽  
Wei Zhao ◽  
Li-Juan Fan
Keyword(s):  
Shell Structures ◽  
Core Shell ◽  
Fluorescent Microspheres ◽  
Color Tuning ◽  
Elimination Process ◽  
Heterogeneous Catalytic ◽  
Thermal Elimination ◽  
Fluorescence Color

Fluorescent microspheres with clear core–shell structures and various emission colors were successfully prepared via a catalytic elimination process.

Emission color tuning of core/shell upconversion nanoparticles through modulation of laser power or temperature

Nanoscale ◽  
2017 ◽  
Vol 9 (33) ◽  
pp. 12132-12141 ◽  
Author(s):  
Qiyue Shao ◽  
Gongtuo Zhang ◽  
Lilai Ouyang ◽  
Yanqing Hu ◽  
Yan Dong ◽  
...  
Keyword(s):  
Laser Power ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Color Tuning ◽  
Temperature Responsive ◽  
Emission Color ◽  
Co Doped

Ho/Tm co-doped core/shell UCNPs with temperature-responsive color-tuning properties were achieved, by taking advantage of the different spectral sensitivities to temperature of Ho3+ and Tm3+ emitters.

scholarly journals High-purity foam-like micron-sized gold cage material with tunable plasmon properties

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Shuo Dong ◽  
Lin Yi ◽  
Lexiao Cheng ◽  
Shijian Li ◽  
Weiming Yang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
High Purity ◽  
Near Infrared ◽  
High Specific Surface Area ◽  
Core Shell ◽  
Anomalous Absorption ◽  
Infrared Band ◽  
Broadband Absorption ◽  
Near Ultraviolet ◽  
Cavity Structure

Abstract Herein, by growing mono dispersed gold nanoparticles (MNPAu) on the surface of polystyrene (PS)/nanogold (Au) core–shell composites (PS@Au), we successfully synthesized a micron-sized gold cage (2.6–10.7 μm), referred to as PS@Au@MNPAu for the first time. The new micron-gold cage materials exhibit broadband absorption range from near-ultraviolet to near-infrared, which is unlike the conventional nanogold core–shell structure. The uniform growth of MNPAu on the surface forms a new photonic crystal spectrum. The strong coupling of the spectra causes anomalous absorption in the ultraviolet-near infrared band (400–900 nm). Furthermore, by removing the PS core, a nanogold cavity structure referred to as Au@MNPAu was prepared. This structure demonstrated a high purity (> 97 wt%), low density (9–223 mg/cm3), and high specific surface area (854 m2/g). As the purification process progressed, the MNPAu coupling on the surface of the micro-gold cage strengthened, resulting in the formation of peaks around 370 nm, plasma resonant peaks around 495 nm, and structural bands of photonic crystal peaks around 850 nm. The micron-sized gold cage provides hybridized and tunable plasmonic systems. The theoretical simulations indicate that this plasmon anomalous absorption phenomena can be understood as the novel form of the topological structural transitions near the percolation threshold, which is consistent experimental measurements.

scholarly journals High-purity core-shell α″-Fe16N2/Al2O3 nanoparticles synthesized from α-hematite for rare-earth-free magnet applications

2016 ◽  
Vol 27 (6) ◽  
pp. 2520-2525 ◽  
Author(s):  
Takashi Ogi ◽  
Qing Li ◽  
Shinji Horie ◽  
Akito Tameka ◽  
Toru Iwaki ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Purity ◽  
Core Shell ◽  
Al2o3 Nanoparticles
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