scholarly journals Effect of Cr position and metal deposition direction on two-dimensional Ag nanoparticle array structure during nanosphere lithography

2012 ◽  
Vol 61 (3) ◽  
pp. 036102
Author(s):  
Kong Ling-Qi ◽  
Zhang Chun-Jing ◽  
Huang Sheng-Li ◽  
Zhu Xian-Fang
Keyword(s):  
Nanosphere Lithography ◽  
Metal Deposition ◽  
Nanoparticle Array ◽  
Two Dimensional ◽  
Ag Nanoparticle ◽  
Array Structure ◽  
Deposition Direction

scholarly journals Optical properties of Ag nanoparticle-polymer composite film based on two-dimensional Au nanoparticle array film

2014 ◽  
Vol 9 (1) ◽  
pp. 155 ◽  
Author(s):  
Long-De Wang ◽  
Tong Zhang ◽  
Xiao-Yang Zhang ◽  
Yuan-Jun Song ◽  
Ruo-Zhou Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Composite Film ◽  
Polymer Composite ◽  
Au Nanoparticle ◽  
Nanoparticle Array ◽  
Two Dimensional ◽  
Ag Nanoparticle ◽  
Polymer Composite Film

Effect of chromium interlayer deposition on periodic silver nanoparticle array structure fabricated by nanosphere lithography

2011 ◽  
Vol 375 (33) ◽  
pp. 3012-3016 ◽  
Author(s):  
Shengli Huang ◽  
Lingqi Kong ◽  
Chunjing Zhang ◽  
Yan Wu ◽  
Xianfang Zhu
Keyword(s):  
Silver Nanoparticle ◽  
Nanosphere Lithography ◽  
Nanoparticle Array ◽  
Array Structure

FABRICATION OF TWO-DIMENSIONAL PHOTONIC CRYSTALS WITH GE2SB2TE5 NANOHOLE ARRAYS BY NANOSPHERE LITHOGRAPHY

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1300-1305
Author(s):  
KI-HO SONG ◽  
HYUN-YONG LEE ◽  
HOE-YOUNG YANG ◽  
SUNG-WON KIM ◽  
JAE-HEE SEO ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Reduction Rate ◽  
Nanosphere Lithography ◽  
Two Dimensional ◽  
Photonic Bandgaps ◽  
Nanohole Arrays ◽  
Plasma Treatment Time ◽  
Lift Off

Two-dimensional photonic crystals (2D-PCs) with Ge 2 Sb 2 Te 5 ( GST ) nanohole arrays were prepared by the nanosphere lithography (NSL) process. A primary factor of PCs is that the refractive index (n) and the n-modulation can be realized by using the GST films, which exhibit a reversible phase transformation between amorphous and crystalline states by laser illumination. The polystyrene (PS) spheres with a diameter of 500 nm were spin-coated on Si substrate and subsequently reduced by O 2-plasma treatment. The reduced spheres were utilized as a lift-off mask of the NSL process and their size and separation could be precisely controlled. Amorphous GST films were thermally evaporated and then the reduced PS spheres were removed. The fabricated GST nanohole arrays were observed by SEM and AFM. The nanohole diameters are nearly linearly reduced with increasing plasma-treatment time (t). The reduction rate (δ) for the conditions of this work was evaluated to be ~ 0.92 nm/s. The period (Λ) and filling factor (η) of PCs are structure parameters that determine their photonic bandgaps (PBGs). η-modulation can be easily achieved via a control of t and the Λ can be also modulated by the use of PS spheres with specific diameter. In addition, the PBGs for the fabricated GST 2 D PC were calculated by considering the amorphous and crystalline states of GST .

scholarly journals Transmit and Receive Array Structure Design of Two-Dimensional hybrid Phased-MIMO Radar based on Nested Array

2018 ◽  
Vol 232 ◽  
pp. 02052
Author(s):  
Tianhao Cheng ◽  
Buhong Wang ◽  
Qiaoge Liu ◽  
Jiwei Tian
Keyword(s):  
Design Method ◽  
Doa Estimation ◽  
Mimo Radar ◽  
Structure Design ◽  
Estimation Accuracy ◽  
Two Dimensional ◽  
Simulation Experiments ◽  
Virtual Array ◽  
Array Structure ◽  
Receive Array

In order to reduce the loss of Degree of Freedom (DOF) brought by the transmit subarray splitting of two-dimensional hybrid phased-MIMO radar, this paper presents a design method of transmitting and receiving array based on nested array structure. Firstly, a two-dimensional hybrid phased-MIMO radar transmitting array based on one-dimensional nested array is presented. On this basis, the receiving end is set as a nested array, and finally a virtual array and difference coarray are formed to expand the number of virtual array elements. The expansion increases the DOF of arrays while preserving the advantages of hybrid phased-MIMO radars. Simulation experiments show that compared with the traditional and coprime hybrid phased-MIMO radar, the proposed method can effectively improve the array DOF and Direction-of-Arrival (DOA) estimation accuracy.

scholarly journals Effect of the Fabrication Parameters of the Nanosphere Lithography Method on the Properties of the Deposited Au-Ag Nanoparticle Arrays

Materials ◽  
2017 ◽  
Vol 10 (4) ◽  
pp. 381 ◽  
Author(s):  
Jing Liu ◽  
Chaoyang Chen ◽  
Guangsong Yang ◽  
Yushan Chen ◽  
Cheng-Fu Yang
Keyword(s):  
Nanosphere Lithography ◽  
Nanoparticle Arrays ◽  
Ag Nanoparticle ◽  
Fabrication Parameters

Effect of Ethanethiolate Spacer on Morphology and Optical Responses of Ag Nanoparticle Array–Single Layer Graphene Hybrid Systems

Langmuir ◽  
2017 ◽  
Vol 33 (50) ◽  
pp. 14414-14424 ◽  
Author(s):  
Veronika Sutrová ◽  
Ivana Šloufová ◽  
Zuzana Melníková ◽  
Martin Kalbáč ◽  
Ewa Pavlova ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Nanoparticle Array ◽  
Ag Nanoparticle ◽  
Layer Graphene ◽  
Optical Responses

RHOMBIC SILVER NANOPARTICLES ARRAY-BASED PLASMONIC FILTER

2011 ◽  
Vol 25 (19) ◽  
pp. 2557-2566 ◽  
Author(s):  
YONGQI FU ◽  
SHAOLI ZHU ◽  
XIULI ZHOU ◽  
WEI ZHOU ◽  
WEI ZHAO
Keyword(s):  
Filter Design ◽  
Extinction Spectrum ◽  
Dipole Approximation ◽  
Design Parameters ◽  
Geometrical Parameters ◽  
Theoretical Spectrum ◽  
Nanoparticle Array ◽  
Ag Nanoparticle ◽  
Design And Optimization ◽  
Plasmonic Filter

A plasmonic filter applied in visible regime is proposed. A method using discrete dipole approximation (DDA) to aid design parameters of rhombic Ag nanoparticle array is adopted for the filter design and optimization on the basis of computational numerical calculation. Influence of the particle parameters such as thickness, period and effective index of medium around the particles on the extinction spectrum is studied using the DDA-based computational analysis. The calculation results show that the thickness ranging from 35 to 45 nm and the period ranging from 350 to 560 nm are the better geometrical parameters of the rhombic Ag nanoparticle array. Considering the nano-fabrication condition, 40 nm thickness and 440 nm period were selected and fabricated using nanosphere lithography (NSL) technique. The experimental results demonstrated that the measured spectrum is basically in agreement with the theoretical spectrum derived by the DDA calculation.

Influence of laser metal deposition direction in the abrasive and adhesive wear resistance of Ni-Cr-B-Si coatings

2020 ◽  
Vol 32 (2) ◽  
pp. 022045
Author(s):  
Jurandir Marcos Sá de Sousa ◽  
Adriano de Souza Pinto Pereira ◽  
Milton Pereira ◽  
Rafael Gomes Nunes Silva
Keyword(s):  
Wear Resistance ◽  
Adhesive Wear ◽  
Metal Deposition ◽  
Laser Metal Deposition ◽  
Deposition Direction
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