Design and optimization of next generation high aspect ratio periodic thin film photovoltaic cells

2011 ◽  
Author(s):  
Mukul Agrawal ◽  
Aneesh Nainani ◽  
Michel Frei
Keyword(s):  
Thin Film ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Photovoltaic Cells ◽  
Next Generation ◽  
Design And Optimization

Role of high aspect-ratio thin-film metal deposition in Cu back-end-of-line technology

2020 ◽  
Vol 38 (5) ◽  
pp. 053402
Author(s):  
Andrew Simon ◽  
Oscar van der Straten ◽  
Nicholas A. Lanzillo ◽  
Chih-Chao Yang ◽  
Takeshi Nogami ◽  
...  
Keyword(s):  
Thin Film ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Metal Deposition ◽  
Line Technology

Large-scale synthesis of AgNWs with ultra-high aspect ratio above 4000 and their application in conductive thin film

2016 ◽  
Vol 28 (7) ◽  
pp. 5308-5314 ◽  
Author(s):  
Yongyun Mao ◽  
Hongwei Yang ◽  
Changyi Hu ◽  
Junmei Guo ◽  
Xianwei Meng ◽  
...  
Keyword(s):  
Thin Film ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Large Scale ◽  
Large Scale Synthesis

Numerical Simulation of a High-Aspect-Ratio Wing Using High Fidelity Aero-Structural Coupled Method

2013 ◽  
Vol 465-466 ◽  
pp. 352-357
Author(s):  
Ze Hai Wang ◽  
Ming Yun Lv ◽  
Jun Hui Meng ◽  
Guo Quan Tao
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Aerodynamic Force ◽  
Geometrical Nonlinearity ◽  
High Fidelity ◽  
Coupled Method ◽  
Design And Optimization ◽  
Rigid Model ◽  
Inherent Nature ◽  
Drag Ratio

High-aspect-ratio wings, with the inherent nature of maximizing the lift-to-drag ratio, have been widely employed in modern airplanes. However, highly flexibility wing structure renders previous rigid model in aerodynamic simulation and ideal aerodynamic force distribution in structural simulation meet serious challenges. In this article, a high fidelity aero-structural coupled method is employed to better evaluating the deformation of a high-aspect-ratio wing. Summarily, this method takes into consideration the aerodynamic redistribution and the geometrical nonlinearity caused by large deformation of the wing, and the deflection calculated using coupled method is approximately 20% more than traditional unidirectional method, providing a more accurate model for structural design and optimization.

Micro-Robotic Actuation Units Based on Thin-Film Piezoelectric and High-Aspect Ratio Polymer Structures

2014 ◽  
Author(s):  
Minchul Shin ◽  
Jongsoo Choi ◽  
Ryan Q. Rudy ◽  
Christopher Kao ◽  
Jeffrey S. Pulskamp ◽  
...  
Keyword(s):  
Thin Film ◽  
Aspect Ratio ◽  
Lead Zirconate Titanate ◽  
High Aspect Ratio ◽  
Low Voltage ◽  
Weight Bearing ◽  
Lead Zirconate ◽  
Dynamic Responses ◽  
Low Voltage Operation ◽  
Fabrication Procedure

A fabrication procedure is presented for creating microactuation elements that link piezoelectric thin-films with high-aspect ratio parylene microstructures. Resulting actuators permit relatively large rotational motions for low voltage operation, while maintaining large weight-bearing capacity. Actuator fabrication is performed on a silicon wafer though a combination of metal and thin-film lead-zirconate-titanate (PZT) deposition and patterning, parylene refill of high-aspect ratio trenches, and dry release of moving parts from the silicon substrate. Static and dynamic responses of various test structures are measured, to estimate material properties of the integrated PZT-polymer structures, for use in future actuator modeling and optimization.

Polypyrrole Nanowire Array with High Aspect Ratio Fabricated by Block-Copolymer-Templated Electropolymerization

2011 ◽  
Vol 1312 ◽  
Author(s):  
Hideaki Komiyama ◽  
Tomokazu Iyoda ◽  
Kaori Kamata
Keyword(s):  
Thin Film ◽  
Block Copolymer ◽  
Aspect Ratio ◽  
Polymer Film ◽  
High Aspect Ratio ◽  
Mixed Solvent ◽  
Nanowire Array ◽  
Selective Removal ◽  
Ito Electrode ◽  
Conducting Polypyrrole

ABSTRACTConducting polypyrrole (PPy) nanowire array was electrochemically fabricated by using microphase-separated block copolymer (PEOm-b-PMA(Az)n) thin film as an electrode template. Electropolymerization proceeds selectively through the perpendiculary oriented PEO nanocylindrical microdomains on an ITO electrode coated by the above polymer film. The length of the PPy nanowires was controllable in range of 10-120 nm by the thickness of the coated template film and the amount of passed charge. A 10 nm of diameter, 27 nm of periodicity, and 12 of aspect ratio of the crystalline PPy nanowires were successfully achieved. Selective removal of the template is also achieved simply by rinsing with solubility-controlled mixed solvent.

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