scholarly journals Copper sulfide nanosheets with shape-tunable plasmonic properties in the NIR region

Nanoscale ◽  
2018 ◽  
Vol 10 (44) ◽  
pp. 20640-20651 ◽  
Author(s):  
Rostyslav Lesyuk ◽  
Eugen Klein ◽  
Iryna Yaremchuk ◽  
Christian Klinke
Keyword(s):  
Field Distribution ◽  
Spectral Region ◽  
Copper Sulfide ◽  
Near Infrared ◽  
Building Blocks ◽  
Plasmonic Materials ◽  
Nir Absorption ◽  
Sulfide Nanocrystals

2D copper sulfide nanocrystals are promising building blocks of plasmonic materials in the near-infrared (NIR) spectral region. The shape of synthesized 2D CuS nanocrystals can effectively tune the NIR absorption and field distribution within the particle.

Plasmonic Copper Sulfide Nanocrystals Exhibiting Near-Infrared Photothermal and Photodynamic Therapeutic Effects

ACS Nano ◽  
2015 ◽  
Vol 9 (2) ◽  
pp. 1788-1800 ◽  
Author(s):  
Shunhao Wang ◽  
Andreas Riedinger ◽  
Hongbo Li ◽  
Changhui Fu ◽  
Huiyu Liu ◽  
...  
Keyword(s):  
Copper Sulfide ◽  
Near Infrared ◽  
Therapeutic Effects ◽  
Sulfide Nanocrystals

scholarly journals Glycosylated Copper Sulfide Nanocrystals for Targeted Photokilling of Bacteria in the Near‐Infrared II Window

2019 ◽  
Vol 2 (8) ◽  
pp. 1900052 ◽  
Author(s):  
Shuai Hou ◽  
Surendra H. Mahadevegowda ◽  
Van Cuong Mai ◽  
Mary B. Chan‐Park ◽  
Hongwei Duan
Keyword(s):  
Copper Sulfide ◽  
Near Infrared ◽  
Sulfide Nanocrystals

Near-Infrared Absorbing Solid Lipid Nanoparticles Encapsulating Plasmonic Copper Sulfide Nanocrystals

2019 ◽  
Vol 123 (37) ◽  
pp. 23205-23213 ◽  
Author(s):  
Fabio Vischio ◽  
Elisabetta Fanizza ◽  
Vito De Bellis ◽  
Teresa Sibillano ◽  
Chiara Ingrosso ◽  
...  
Keyword(s):  
Solid Lipid Nanoparticles ◽  
Copper Sulfide ◽  
Near Infrared ◽  
Lipid Nanoparticles ◽  
Solid Lipid ◽  
Sulfide Nanocrystals

scholarly journals Integrated Optical Phased Arrays for Beam Forming and Steering

2021 ◽  
Vol 11 (9) ◽  
pp. 4017
Author(s):  
Yongjun Guo ◽  
Yuhao Guo ◽  
Chunshu Li ◽  
Hao Zhang ◽  
Xiaoyan Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Phased Arrays ◽  
Mechanical Stability ◽  
Building Blocks ◽  
High Yield ◽  
Beam Forming ◽  
Integrated Optical ◽  
Optical Phased Arrays ◽  
Infrared Spectral ◽  
Spectral Ranges

Integrated optical phased arrays can be used for beam shaping and steering with a small footprint, lightweight, high mechanical stability, low price, and high-yield, benefiting from the mature CMOS-compatible fabrication. This paper reviews the development of integrated optical phased arrays in recent years. The principles, building blocks, and configurations of integrated optical phased arrays for beam forming and steering are presented. Various material platforms can be used to build integrated optical phased arrays, e.g., silicon photonics platforms, III/V platforms, and III–V/silicon hybrid platforms. Integrated optical phased arrays can be implemented in the visible, near-infrared, and mid-infrared spectral ranges. The main performance parameters, such as field of view, beamwidth, sidelobe suppression, modulation speed, power consumption, scalability, and so on, are discussed in detail. Some of the typical applications of integrated optical phased arrays, such as free-space communication, light detection and ranging, imaging, and biological sensing, are shown, with future perspectives provided at the end.

Structure and microstructure of near infrared-absorbing Au–Au2S nanoparticles

2007 ◽  
Vol 22 (9) ◽  
pp. 2531-2538 ◽  
Author(s):  
Mei Chee Tan ◽  
Jackie Y. Ying ◽  
Gan Moog Chow
Keyword(s):  
Optical Properties ◽  
Surface Segregation ◽  
Near Infrared ◽  
Small Degree ◽  
Core Shell ◽  
Shell Microstructure ◽  
Absorption Bands ◽  
Interfacial Effects ◽  
Nir Absorption ◽  
Structure And Microstructure

Near infrared (NIR) absorbing nanoparticles synthesized by the reduction of HAuCl4 with Na2S exhibited absorption bands at ∼530 nm, and in the NIR region of 650–1100 nm. The NIR optical properties were not found to be related to the earlier proposed Au2S–Au core-shell microstructure in previous studies. From a detailed study of the structure and microstructure of as-synthesized particles in this work, S-containing, Au-rich, multiply-twinned nanoparticles were found to exhibit NIR absorption. They consisted of amorphous AuxS (where x = 2), mostly well mixed within crystalline Au, with a small degree of surface segregation of S. Therefore, NIR absorption was likely due to interfacial effects on particle polarization from the introduction of AuxS into Au particles, and not the dielectric confinement of plasmons associated with a core-shell microstructure.

Composition, particle size, and near-infrared irradiation effects on optical properties of Au–Au2S nanoparticles

2008 ◽  
Vol 23 (1) ◽  
pp. 281-293 ◽  
Author(s):  
Mei Chee Tan ◽  
Jackie Y. Ying ◽  
Gan Moog Chow
Keyword(s):  
Particle Size ◽  
Optical Properties ◽  
Thermal Effects ◽  
Near Infrared ◽  
Sodium Sulfide ◽  
Irradiation Effects ◽  
Absorption Bands ◽  
Molar Ratios ◽  
Nir Absorption ◽  
Structure And Microstructure

Near-infrared (NIR)-absorbing nanoparticles synthesized by the reduction of tetrachloroauric acid (HAuCl4) using sodium sulfide (Na2S) exhibited absorption bands at ∼530 nm and at the NIR region of 650−1100 nm. A detailed study on the structure and microstructure of as-synthesized nanoparticles was reported previously. The as-synthesized nanoparticles were found to consist of amorphous AuxS (x = ∼2), mostly well mixed within crystalline Au. In this work, the optical properties were tailored by varying the precursor molar ratios of HAuCl4 and Na2S. In addition, a detailed study of composition and particle-size effects on the optical properties was discussed. The change of polarizability by the introduction of S in the form of AuxS (x = ∼2) had a significant effect on NIR absorption. Also, it was found in this work that exposure of these particles to NIR irradiation using a Nd:YAG laser resulted in loss of the NIR absorption band. Thermal effects generated during NIR irradiation had led to microstructural changes that modified the optical properties of particles.

scholarly journals Extreme tunability in aluminum doped Zinc Oxide plasmonic materials for near-infrared applications

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
A. K. Pradhan ◽  
R. M. Mundle ◽  
Kevin Santiago ◽  
J. R. Skuza ◽  
Bo Xiao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Near Infrared ◽  
Plasmonic Materials ◽  
Aluminum Doped Zinc Oxide
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