Near-Infrared Light Excited Highly Pure Green Upconversion Photoluminescence and Intrinsic Optical Bistability Sensing in a Ho3+/Yb3+ Co-Doped ZnGa2O4 Phosphor through Li+ Doping

2020 ◽  
Vol 124 (18) ◽  
pp. 10117-10128 ◽  
Author(s):  
Monika ◽  
Ram Sagar Yadav ◽  
Amresh Bahadur ◽  
Shyam Bahadur Rai
Keyword(s):  
Optical Bistability ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Li Doping ◽  
Upconversion Photoluminescence ◽  
Intrinsic Optical Bistability ◽  
Co Doped

Single red emission from upconverting ZnGa2O4:Yb,Er nanoparticles co-doped by Cr3+

2020 ◽  
Vol 8 (19) ◽  
pp. 6370-6379 ◽  
Author(s):  
Bhupendra B. Srivastava ◽  
Santosh K. Gupta ◽  
Yuanbing Mao
Keyword(s):  
Hydrothermal Method ◽  
Near Infrared ◽  
Red Light ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Red Emission ◽  
Co Doped

ZnGa2O4:Yb3+,Er3+,Cr3+ nanoparticles synthesized by a hydrothermal method and further annealing emit bright singular red light under 980 nm excitation and near-infrared light under 254 nm excitation.

Near-infrared Light-mediated Er3+ and Yb3+ co-doped CaTi4O9 for Optical Temperature Sensing Behavior

2020 ◽  
pp. 117737
Author(s):  
Prashansha Singh ◽  
Neha Jain ◽  
Anish Kumar Tiwari ◽  
Shraddha Shukla ◽  
Vikas Baranwal ◽  
...  
Keyword(s):  
Near Infrared ◽  
Temperature Sensing ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Co Doped

Improved photon upconversion photoluminescence and intrinsic optical bistability from a rare earth co-doped lanthanum oxide phosphor via Bi3+ doping

2018 ◽  
Vol 42 (9) ◽  
pp. 7272-7282 ◽  
Author(s):  
R. S. Yadav ◽  
S. J. Dhoble ◽  
S. B. Rai
Keyword(s):  
Rare Earth ◽  
Optical Bistability ◽  
Lanthanum Oxide ◽  
Upconversion Photoluminescence ◽  
Intrinsic Optical Bistability ◽  
Co Doped

An Er3+, Yb3+, Bi3+ co-doped La2O3 phosphor shows upconverted emission and intrinsic optical bistability properties.

An ordered copper nanowell-array film with near-perfect broadband absorption from ultraviolet to near-infrared light

2020 ◽  
Vol 59 (11) ◽  
pp. 110906
Author(s):  
Juan Shen ◽  
Yong Ren ◽  
Xinxin Zhu ◽  
Min Mao ◽  
Quan Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Broadband Absorption

scholarly journals Recent Near-Infrared Light-Activated Nanomedicine toward Precision Cancer Therapy

2021 ◽  
Author(s):  
Xiaowei Luan ◽  
Yongchun Pan ◽  
Yanfeng Gao ◽  
Yujun Song
Keyword(s):  
Cancer Therapy ◽  
Near Infrared ◽  
Infrared Light ◽  
Human Society ◽  
Near Infrared Light ◽  
History Of ◽  
The Universe

Light has witnessed the history of mankind and even the universe. It is of great significances to the life of human society, contributing to energy, agriculture, communication, and much more....

scholarly journals Au–ZnO Conjugated Black Phosphorus as a Near-Infrared Light-Triggering and Recurrence-Suppressing Nanoantibiotic Platform against Staphylococcus aureus

Pharmaceutics ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 52
Author(s):  
Atanu Naskar ◽  
Sohee Lee ◽  
Kwang-sun Kim
Keyword(s):  
Staphylococcus Aureus ◽  
Bacterial Infections ◽  
Near Infrared ◽  
Au Nanoparticles ◽  
Synthesis Method ◽  
Antibacterial Properties ◽  
Black Phosphorus ◽  
Infrared Light ◽  
Resistant Bacteria ◽  
Near Infrared Light

Antibiotic therapy is the gold standard for bacterial infections treatment. However, the rapid increase in multidrug-resistant (MDR) bacterial infections and its recent use for secondary bacterial infections in many COVID-19 patients has considerably weakened its treatment efficacy. These shortcomings motivated researchers to develop new antibacterial materials, such as nanoparticle-based antibacterial platform with the ability to increase the chances of killing MDR strains and prevent their drug resistance. Herein, we report a new black phosphorus (BP)-based non-damaging near-infrared light-responsive platform conjugated with ZnO and Au nanoparticles as a synergistic antibacterial agent against Staphylococcus aureus species. First, BP nanosheets containing Au nanoparticles were assembled in situ with the ZnO nanoparticles prepared by a low-temperature solution synthesis method. Subsequently, the antibacterial activities of the resulting Au–ZnO–BP nanocomposite against the non-resistant, methicillin-resistant, and erythromycin-resistant S. aureus species were determined, after its photothermal efficacy was assessed. The synthesized nanocomposite exhibited excellent anti-S. aureus activity and good photothermal characteristics. The non-resistant S. aureus species did not produce drug-resistant bacteria after the treatment of multiple consecutive passages under the pressure of the proposed nanoantibiotic, but rapidly developed resistance to erythromycin. This work clearly demonstrates the excellent photothermal antibacterial properties of Au–ZnO–BP nanocomposite against the MDR S. aureus species.

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