electromagnetic characterization of periodic plasmonic materials
Post on 12-Apr-2017
195 Views
Preview:
TRANSCRIPT
serna@unex.es http://albertosernait.es @SernaOnline
Electromagnetic Characterization of Periodic Plasmonic Materials
Alberto Serna Martín
Doctorado en Tecnología Aeroespacial Ingenierías Electromagnética, Electrónica, Informática y Mecánica
Advisor: Ph.D. Luis Landesa Porras 9 de septiembre de 2015
serna@unex.es http://albertosernait.es @SernaOnline
• Introduction
• Periodic structures and slotFFT
• Acceleration through matrix compression
• Achieved results
• Current lines and near future goals
Outline
1
serna@unex.es http://albertosernait.es @SernaOnline
• Method of Moments
• Finite Element Method
• Etc.
Introduction
2
serna@unex.es http://albertosernait.es @SernaOnline
• 3x3x3 3,42 GB
Introduction
3
serna@unex.es http://albertosernait.es @SernaOnline
• 3x3x3 3,42 GB
• 10x10x3 419,00 GB
Introduction
4
serna@unex.es http://albertosernait.es @SernaOnline
• 3x3x3 3,42 GB 1,01 GB (3D)
• 10x10x3 419,00 GB 11,20 GB (3D)
Periodic structures and slotFFT
5
serna@unex.es http://albertosernait.es @SernaOnline
• Convergence time
– Cell size
– Number of periodic dimensions
Periodic structures and slotFFT
6
serna@unex.es http://albertosernait.es @SernaOnline
• Convergence time
– Cell size
– Number of periodic dimensions
• Upcoming challenges
– Massive number of elements
Periodic structures and slotFFT
7
serna@unex.es http://albertosernait.es @SernaOnline
• Convergence time
– Cell size
– Number of periodic dimensions
• Upcoming challenges
– Massive number of elements
• Photonic crystal of 200 elements
– 5 periodic dimensions (1,2TB RAM)
Periodic structures and slotFFT
8
serna@unex.es http://albertosernait.es @SernaOnline
• Domain change in Z matrix
Acceleration through matrix compression
9
serna@unex.es http://albertosernait.es @SernaOnline
• Domain change in Z matrix
• G matrix
– Describes the way an object radiates energy
– SVD macrobasis
Acceleration through matrix compression
10
serna@unex.es http://albertosernait.es @SernaOnline
• Domain change in Z matrix
• G matrix
– Describes the way an object radiates energy
– SVD macrobasis
• Precision – acceleration compromise
Acceleration through matrix compression
11
serna@unex.es http://albertosernait.es @SernaOnline
• High precision loss due to the evanescent fields
– Unacceptable in resonating structures
Improving precision through thresholds
12
serna@unex.es http://albertosernait.es @SernaOnline
• Self-coupling and adjacent impedance matrices are calculated with MoM
– Determined by the application of a threshold
Improving precision through thresholds
13
serna@unex.es http://albertosernait.es @SernaOnline
Achieved results
14
• 4x4x4 array of dielectric spheres @ 785nm
– 60/540 macrobasis
serna@unex.es http://albertosernait.es @SernaOnline
• Study of the precision-acceleration compromise
• Implementation of a new preconditioner to improve convergence speed in periodic structures
• Analysis of real and reference examples
Current lines and near future goals
15
serna@unex.es http://albertosernait.es @SernaOnline
Thanks for your attention
16
top related