2018
Robles, Ubaldo; Kasemodel, Justin; Avila, Jose; Benitez, Tenoch; Rumpf, Raymond C
3-d printed structures by microdispensing materials loaded with dielectric and magnetic powders Journal Article
In: IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 8, no. 3, pp. 492-498, 2018, ISSN: 2156-3950.
Abstract | Links | BibTeX | Tags: 3D printing, dielectrics, magnetic properties, microdispensing
@article{RN131,
title = {3-d printed structures by microdispensing materials loaded with dielectric and magnetic powders},
author = {Ubaldo Robles and Justin Kasemodel and Jose Avila and Tenoch Benitez and Raymond C Rumpf},
url = {https://ieeexplore.ieee.org/document/8263403},
doi = {10.1109/TCPMT.2017.2781723},
issn = {2156-3950},
year = {2018},
date = {2018-03-01},
urldate = {2018-03-01},
journal = {IEEE Transactions on Components, Packaging and Manufacturing Technology},
volume = {8},
number = {3},
pages = {492-498},
abstract = {In this paper, we develop processes for printing 3-D structures by microdispensing materials loaded with dielectric and magnetic powders. Manufacturing with these materials is demonstrated by 3-D printing simple tower and bridge structures. The dielectric and magnetic properties are adjusted by loading different amounts of powder into a host silicone material. The long-term goal of the research is to print larger and more complex structures while also realizing a range of electromagnetic properties for applications in 3-D printed electromagnetics.},
keywords = {3D printing, dielectrics, magnetic properties, microdispensing},
pubstate = {published},
tppubtype = {article}
}
In this paper, we develop processes for printing 3-D structures by microdispensing materials loaded with dielectric and magnetic powders. Manufacturing with these materials is demonstrated by 3-D printing simple tower and bridge structures. The dielectric and magnetic properties are adjusted by loading different amounts of powder into a host silicone material. The long-term goal of the research is to print larger and more complex structures while also realizing a range of electromagnetic properties for applications in 3-D printed electromagnetics.
2017
Avila, Jose; Valle, Cesar L; Bustamante, Edgar; Rumpf, Raymond C
Optimization and Characterization of Negative Uniaxial Metamaterials Journal Article
In: Progress In Electromagnetics Research C, vol. 74, pp. 111-121, 2017, ISSN: 1937-8718.
Abstract | Links | BibTeX | Tags: birefringent, dielectrics, hybrid 3D printing, negative uniaxial metamaterials
@article{RN123,
title = {Optimization and Characterization of Negative Uniaxial Metamaterials},
author = {Jose Avila and Cesar L Valle and Edgar Bustamante and Raymond C Rumpf},
url = {https://www.jpier.org/pierc/pier.php?paper=17030906},
doi = {doi:10.2528/PIERC17030906},
issn = {1937-8718},
year = {2017},
date = {2017-05-23},
urldate = {2017-05-23},
journal = {Progress In Electromagnetics Research C},
volume = {74},
pages = {111-121},
abstract = {Digital manufacturing, or 3D printing, is a rapidly emerging technology that enables novel designs that incorporate complex geometries and even multiple materials. In electromagnetics and circuits, 3D printing allows the dielectrics to take on new and profound functionality. This paper introduces negative uniaxial metamaterials (NUMs) which are birefringent structures that can be used to manipulate electromagnetic fields at a very small scale. The NUMs presented here are composed of alternating layers of two different dielectrics. The physics of the NUMs are explained and simple analytical equations for the effective dielectric tensor are derived. Using these equations, the NUMs are optimized for strength of anisotropy and for space stretching derived from transformation optics. The analytical equations are validated through rigorous simulations and by laboratory measurements. Three NUMs where manufactured using 3D printing where each exhibited anisotropy in a different orientation for measurement purposes. All of the data from the analytical equations, simulations, and experiments are in excellent agreement confirming that the physics of the NUMs is well understood and that NUMs can be designed quickly and easily using just the analytical equations.},
keywords = {birefringent, dielectrics, hybrid 3D printing, negative uniaxial metamaterials},
pubstate = {published},
tppubtype = {article}
}
Digital manufacturing, or 3D printing, is a rapidly emerging technology that enables novel designs that incorporate complex geometries and even multiple materials. In electromagnetics and circuits, 3D printing allows the dielectrics to take on new and profound functionality. This paper introduces negative uniaxial metamaterials (NUMs) which are birefringent structures that can be used to manipulate electromagnetic fields at a very small scale. The NUMs presented here are composed of alternating layers of two different dielectrics. The physics of the NUMs are explained and simple analytical equations for the effective dielectric tensor are derived. Using these equations, the NUMs are optimized for strength of anisotropy and for space stretching derived from transformation optics. The analytical equations are validated through rigorous simulations and by laboratory measurements. Three NUMs where manufactured using 3D printing where each exhibited anisotropy in a different orientation for measurement purposes. All of the data from the analytical equations, simulations, and experiments are in excellent agreement confirming that the physics of the NUMs is well understood and that NUMs can be designed quickly and easily using just the analytical equations.