A simple approach to achieve nanometric features in three-dimensional structures fabricated via multiphoton absorption polymerization (Conference Presentation)

2019 ◽  
Author(s):  
Pedro M. Cônsoli ◽  
Adriano J. G. Otuka ◽  
Debora T. Balogh ◽  
Cleber R. Mendonça
Keyword(s):  
Three Dimensional ◽  
Simple Approach ◽  
Multiphoton Absorption ◽  
Multiphoton Absorption Polymerization

Three-Dimensional Micro- and Nanofabrication with Multiphoton Absorption

2004 ◽  
Vol 850 ◽  
Author(s):  
Christopher N. LaFratta ◽  
Richard A. Farrer ◽  
Tommaso Baldacchini ◽  
Juliet Znovena ◽  
Daniel Lim ◽  
...  
Keyword(s):  
Recent Progress ◽  
Three Dimensional ◽  
Metal Deposition ◽  
Multiphoton Absorption ◽  
Powerful Technique ◽  
Multiphoton Absorption Polymerization ◽  
The Creation ◽  
Polymeric Structures

ABSTRACTMultiphoton absorption has become a powerful technique for the creation of three-dimensional micro- and nanostructures. Here we review some of our recent progress towards creating functional microdevices with multiphoton absorption. Specific thrusts of our research include development of new resins for multiphoton absorption polymerization, design of novel schemes for metal deposition, and post-fabrication ablation of polymeric structures.

A Simple Approach to the Study of Wave Patterns

2014 ◽  
Vol 156 (A3) ◽  
Keyword(s):  
Numerical Methods ◽  
Shallow Water ◽  
Froude Number ◽  
Critical Speed ◽  
Graphical Method ◽  
Three Dimensional ◽  
Simple Approach ◽  
Critical Depth ◽  
Simple Manner ◽  
Wave Patterns

The paper revisits some pioneering work of Sir Thomas Havelock on wave patterns with particular attention focused on his graphical method of analysis. Motivated by a desire to explore this method further using numerical methods, it is extended in a simple manner to give three-dimensional illustrations of the wave patterns of a point disturbance in deep and shallow water. All results are confined to the sub- and trans-critical regimes with some obtained very close to the critical Depth Froude Number. Some conclusions are drawn on the wave types produced when operating close to the critical speed and their decay with distance off.

High-Performance Microring Resonators Fabricated with Multiphoton Absorption Polymerization

2008 ◽  
Vol 20 (19) ◽  
pp. 3668-3671 ◽  
Author(s):  
Linjie Li ◽  
Erez Gershgoren ◽  
George Kumi ◽  
Wei-Yen Chen ◽  
P.-T. Ho ◽  
...  
Keyword(s):  
High Performance ◽  
Microring Resonators ◽  
Multiphoton Absorption ◽  
Multiphoton Absorption Polymerization

A simple approach for optimal allocation of dampers in nonsymmetrical 3D multi-storey structures

2014 ◽  
Vol 14 (03) ◽  
pp. 1350074 ◽  
Author(s):  
L. J. Leu ◽  
J. T. Chang
Keyword(s):  
Optimal Allocation ◽  
Seismic Analysis ◽  
Search Algorithm ◽  
Three Dimensional ◽  
Time History ◽  
Simple Approach ◽  
Optimal Placement ◽  
Drift Ratio ◽  
History Analysis ◽  
Stop Criterion

A new simple approach is proposed to search for the optimal placement of dampers in nonsymmetrical three-dimensional (3D) structures. Dampers are placed uniformly and initially at each storey of two selected bays of the bare structures and the time-history seismic analysis is performed. The maximal inter-storey drift ratio is chosen as the performance index. Then the inter-storey drift ratio is checked for the locations where dampers were added. The damper in the location with the minimal inter-storey drift ratio is moved to the location having the maximal inter-storey drift ratio. This process is repeated until the prescribed stop criterion is met. Both linear and nonlinear viscous dampers are used in this study. The damping coefficient of added dampers for the initial damper placement is determined by setting the maximal inter-storey drift ratio of the whole structure equal to a certain value when a ground motion is applied. In the proposed relocation process, the maximal inter-storey drift ratio will be reduced significantly. Three examples, including two 10-storey and one 20-storey 3D nonsymmetrical structures, are used to demonstrate the efficiency and accuracy of the proposed approach. The results are compared with those obtained using the simplified sequential search algorithm (SSSA). It is found that the proposed approach requires fewer number of time-history analysis than that using the SSSA while their accuracy is comparable.

A SIMPLE APPROACH TO THE STUDY OF WAVE PATTERNS

2021 ◽  
Vol 156 (A3) ◽  
Author(s):  
I W Dand
Keyword(s):  
Numerical Methods ◽  
Shallow Water ◽  
Froude Number ◽  
Critical Speed ◽  
Graphical Method ◽  
Three Dimensional ◽  
Simple Approach ◽  
Critical Depth ◽  
Simple Manner ◽  
Wave Patterns

The paper revisits some pioneering work of Sir Thomas Havelock on wave patterns with particular attention focussed on his graphical method of analysis. Motivated by a desire to explore this method further using numerical methods, it is extended in a simple manner to give three-dimensional illustrations of the wave patterns of a point disturbance in deep and shallow water. All results are confined to the sub- and trans-critical regimes with some obtained very close to the critical Depth Froude Number. Some conclusions are drawn on the wave types produced when operating close to the critical speed and their decay with distance off.

scholarly journals Generating Nanostructures with Multiphoton Absorption Polymerization using Optical Trap Assisted Nanopatterning

2012 ◽  
Vol 39 ◽  
pp. 669-673 ◽  
Author(s):  
Yu-Cheng Tsai ◽  
Karl-Heinz Leitz ◽  
Romain Fardel ◽  
Michael Schmidt ◽  
Craig B. Arnold
Keyword(s):  
Optical Trap ◽  
Multiphoton Absorption ◽  
Multiphoton Absorption Polymerization
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