scholarly journals Large aspect ratio gold nanorods (LAR-GNRs) for mid-infrared pulse generation with a tunable wavelength near 3 μm

2019 ◽  
Vol 27 (4) ◽  
pp. 4886 ◽  
Author(s):  
Hongyu Luo ◽  
Zhe Kang ◽  
Ying Gao ◽  
Hanlin Peng ◽  
Jianfeng Li ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Pulse Generation ◽  
Large Aspect Ratio ◽  
Mid Infrared ◽  
Tunable Wavelength

One-Step Synthesis of Large-Aspect-Ratio Single-Crystalline Gold Nanorods by Using CTPAB and CTBAB Surfactants

2007 ◽  
Vol 13 (10) ◽  
pp. 2929-2936 ◽  
Author(s):  
Xiaoshan Kou ◽  
Shuzhuo Zhang ◽  
Chia-Kuang Tsung ◽  
Zhi Yang ◽  
Man Hau Yeung ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Large Aspect Ratio ◽  
Single Crystalline ◽  
One Step

scholarly journals BSA-Coated Gold Nanorods for NIR-II Photothermal Therapy

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Shubi Zhao ◽  
Yiqun Luo ◽  
Zong Chang ◽  
Chenchen Liu ◽  
Tong Li ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Near Infrared ◽  
Large Aspect Ratio ◽  
Long Wavelength ◽  
Cancer Tumor ◽  
Wavelength Absorption ◽  
Low Cytotoxicity ◽  
Plasma Absorption ◽  
Infrared Window

AbstractThe second near infrared window is considered to be the optimal optical window for medical imaging and therapy as its capability of deep tissue penetration. The preparation of the gold nanorods with long wavelength absorption and low cytotoxicity is still a challenge. A series gold nanorods with large aspect ratio have been synthesized. Strong plasma absorption in the second near infrared window from 1000 to 1300 nm could be observed. The biocompatibility of the synthesized gold nanorods is dramatically improved via coating by bovine serum albumin (BSA), while the optical properties of which remains. The breast cancer tumor-bearing mouse could be well treated by the prepared gold nanorods with the NIR-II light intensity as low as 0.75 W/cm2. In summary, these results demonstrate the feasibility of using low illumination dose to treat tumor in the NIR-II region via the large aspect ratio gould nanoparticles.

scholarly journals Plasmon-enhanced polymer photovoltaic cells based on large aspect ratio gold nanorods and the related working mechanism

2014 ◽  
Vol 104 (21) ◽  
pp. 213903 ◽  
Author(s):  
S. F. Chen ◽  
F. Cheng ◽  
Y. Mei ◽  
B. Peng ◽  
M. Kong ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Photovoltaic Cells ◽  
Large Aspect Ratio ◽  
Working Mechanism

Effect of aspect ratio on the chirality of gold nanorods prepared through conventional seed-mediated growth method

2021 ◽  
Vol 1152 ◽  
pp. 338277
Author(s):  
Xiaojuan Zhou ◽  
Qiang Liu ◽  
Xiaoyu Shi ◽  
Chunli Xu ◽  
Baoxin Li
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Growth Method ◽  
Seed Mediated

Numerical Modeling of Fluid-Induced Rotordynamic Forces in Seals With Large Aspect Ratio

2012 ◽  
Author(s):  
Alexandrina Untaroiu ◽  
Costin D. Untaroiu ◽  
Houston G. Wood ◽  
Paul E. Allaire
Keyword(s):  
Finite Difference ◽  
Aspect Ratio ◽  
Finite Difference Method ◽  
Difference Method ◽  
Dynamic Properties ◽  
Bulk Flow ◽  
Large Aspect Ratio ◽  
Flow Method ◽  
Dynamic Coefficients ◽  
Aspect Ratios

Traditional annular seal models are based on bulk flow theory. While these methods are computationally efficient and can predict dynamic properties fairly well for short seals, they lack accuracy in cases of seals with complex geometry or with large aspect ratios (above 1.0). In this paper, the linearized rotordynamic coefficients for a seal with large aspect ratio are calculated by means of a three dimensional CFD analysis performed to predict the fluid-induced forces acting on the rotor. For comparison, the dynamic coefficients were also calculated using two other codes: one developed on the bulk flow method and one based on finite difference method. These two sets of dynamic coefficients were compared with those obtained from CFD. Results show a reasonable correlation for the direct stiffness estimates, with largest value predicted by CFD. In terms of cross-coupled stiffness, which is known to be directly related to cross-coupled forces that contribute to rotor instability, the CFD predicts also the highest value; however a much larger discrepancy can be observed for this term (73% higher than value predicted by finite difference method and 79% higher than bulk flow code prediction). Similar large differences in predictions one can see in the estimates for damping and direct mass coefficients, where highest values are predicted by the bulk flow method. These large variations in damping and mass coefficients, and most importantly the large difference in the cross-coupled stiffness predictions, may be attributed to the large difference in seal geometry (i.e. the large aspect ratio AR>1.0 of this seal model vs. the short seal configuration the bulk flow code is usually calibrated for, using an empirical friction factor).

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