scholarly journals Water flattens graphene wrinkles: laser shock wrapping of graphene onto substrate-supported crystalline plasmonic nanoparticle arrays

Nanoscale ◽  
2015 ◽  
Vol 7 (47) ◽  
pp. 19885-19893 ◽  
Author(s):  
Yaowu Hu ◽  
Seunghyun Lee ◽  
Prashant Kumar ◽  
Qiong Nian ◽  
Wenqi Wang ◽  
...  
Keyword(s):  
Shock Pressure ◽  
Plasmonic Nanostructures ◽  
Nanoparticle Arrays ◽  
Laser Shock ◽  
Plasmonic Nanoparticle

We report a technique utilizing laser induced shock pressure to conformally wrap graphene onto plasmonic nanostructures.

Gap-dependent SERS effect of ordered composite plasmonic nanoparticle arrays and its application for detection of sodium saccharin

2021 ◽  
Vol 112 ◽  
pp. 110788
Author(s):  
Shaosong Yang ◽  
Guangqiang Liu ◽  
Luping Meng ◽  
Xing Wang ◽  
Ying Xiong ◽  
...  
Keyword(s):  
Nanoparticle Arrays ◽  
Plasmonic Nanoparticle ◽  
Sodium Saccharin

Nonlinear Surface Lattice Resonance in Plasmonic Nanoparticle Arrays

2017 ◽  
Vol 118 (24) ◽  
Author(s):  
Lior Michaeli ◽  
Shay Keren-Zur ◽  
Ori Avayu ◽  
Haim Suchowski ◽  
Tal Ellenbogen
Keyword(s):  
Nanoparticle Arrays ◽  
Plasmonic Nanoparticle ◽  
Surface Lattice ◽  
Nonlinear Surface

Theoretical Analysis of Laser Shock Bulging Forming

2012 ◽  
Vol 472-475 ◽  
pp. 2480-2483 ◽  
Author(s):  
Guo Fang Zhang ◽  
Zhong Ji ◽  
Jing Liu ◽  
Chao Zheng ◽  
Jian Hua Zhang
Keyword(s):  
High Pressure ◽  
Theoretical Analysis ◽  
Analytical Model ◽  
Pulse Energy ◽  
Shock Pressure ◽  
Laser Shock ◽  
Plastic Response ◽  
Forming Process ◽  
Laser Shock Forming ◽  
Plastic Forming

Laser shock forming (LSF) is a novel plastic forming process which utilizes high-pressure plasma to deform thin metals to 3D configurations. The plastic response of a circular plate in laser shock bulging forming was theoretically studied. A simplified shock pressure model was established and then an analytical model was proposed to calculate the deflection. The results show that the deflection increases with increasing pulse energy and the deformation profiles calculated by the analytical model agree well with those of experiment.

THz Generation from Plasmonic Nanoparticle Arrays

Nano Letters ◽  
2011 ◽  
Vol 11 (11) ◽  
pp. 4718-4724 ◽  
Author(s):  
D. K. Polyushkin ◽  
E. Hendry ◽  
E. K. Stone ◽  
W. L. Barnes
Keyword(s):  
Nanoparticle Arrays ◽  
Plasmonic Nanoparticle ◽  
Thz Generation

scholarly journals Electron photoemission in plasmonic nanoparticle arrays: analysis of collective resonances and embedding effects

2014 ◽  
Vol 116 (3) ◽  
pp. 929-940 ◽  
Author(s):  
Sergei V. Zhukovsky ◽  
Viktoriia E. Babicheva ◽  
Alexander V. Uskov ◽  
Igor E. Protsenko ◽  
Andrei V. Lavrinenko
Keyword(s):  
Nanoparticle Arrays ◽  
Plasmonic Nanoparticle ◽  
Electron Photoemission

Massive Parallel Laser Shock Peening: Simulation, Verification, and Analysis

2005 ◽  
Author(s):  
A. W. Warren ◽  
Y. B. Guo ◽  
S. C. Chen
Keyword(s):  
Residual Stress ◽  
Surface Integrity ◽  
Compressive Residual Stress ◽  
Laser Intensity ◽  
Shock Pressure ◽  
Laser Shock Peening ◽  
Massively Parallel ◽  
Laser Shock ◽  
Laser Material ◽  
Shock Peening

Laser shock peening (LSP) is a surface treatment process to improve the surface integrity of metallic components. The nearly pure mechanical process of LSP results in favorable surface integrity such as compressive residual stress and improved surface material properties. Since LSP is a transient process with laser pulse duration time on the order of 40 ns, real time in-situ measurement of laser/material interaction is very challenging, if not impossible. A fundamental understanding of laser/material interactions is essential for LSP planning. Previous finite element simulations of LSP have been limited to a single laser shock location for both two and three dimensional modeling. However, actual LSP are performed in a massively parallel mode which involves almost simultaneous multi-laser/material interactions in order to induce uniform compressive residual stress across the entire surface of the workpiece. The massively parallel laser/material interactions have a significant compound/interfering effect on the resulting surface integrity of the workpiece. The numerical simulation of shock pressure as a function of time and space during LSP is another critical problem. The purpose of this paper is to investigate the effects of parallel multiple laser/material interactions on the stress/strain distributions in the workpiece during LSP of AISI 52100 steel. FEA simulations of LSP in single and multiple passes were performed with the developed spatial and temporal shock pressure model via a subroutine. The simulated residual stresses agree with the measured data in nature and trend, while magnitude can be influenced by the interactions between neighboring peening zones and the locations of residual stress measurement. Design-of-experiment (DOE) based simulations of massive parallel LSP were also performed to determine the effects of laser intensity, laser spot size, and peening spacing on stresses and strains. Increasing the laser intensity increases both the stress magnitude and affected depth. The use of smaller laser spot sizes decreases the largest magnitude of residual stress and also decreases the depth affected by LSP. Larger spot sizes have less energy attenuation and cause more plastic deformation. Spacing between peening zones is critical for the uniformity of mechanical properties across the surface. The greatest uniformity and largest stress magnitudes are achieved by overlapping of the laser spots.

scholarly journals Asymmetry in photocurrent enhancement by plasmonic nanoparticle arrays located on the front or on the rear of solar cells

2010 ◽  
Vol 96 (3) ◽  
pp. 033113 ◽  
Author(s):  
F. J. Beck ◽  
S. Mokkapati ◽  
A. Polman ◽  
K. R. Catchpole
Keyword(s):  
Solar Cells ◽  
Nanoparticle Arrays ◽  
Plasmonic Nanoparticle

scholarly journals Tunable laser interference lithography preparation of plasmonic nanoparticle arrays tailored for SERS

Nanoscale ◽  
2018 ◽  
Vol 10 (21) ◽  
pp. 10268-10276 ◽  
Author(s):  
Nestor Gisbert Quilis ◽  
Médéric Lequeux ◽  
Priyamvada Venugopalan ◽  
Imran Khan ◽  
Wolfgang Knoll ◽  
...  
Keyword(s):  
Surface Area ◽  
Tunable Laser ◽  
Plasmonic Nanoparticles ◽  
Interference Lithography ◽  
Laser Interference Lithography ◽  
Nanoparticle Arrays ◽  
Laser Interference ◽  
Plasmonic Nanoparticle ◽  
Facile Preparation

The facile preparation of arrays of plasmonic nanoparticles over a square centimeter surface area is reported.

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