Title :
Additively manufactured heterogeneous substrates for three-dimensional control of local permittivity
Author :
Tribe, J. ; Whittow, William G. ; Kay, R.W. ; Vardaxoglou, J.C.
Author_Institution :
Sch. of Electron., Electr. & Syst. Eng., Loughborough Univ., Loughborough, UK
Abstract :
The concept of using additive manufacturing as a method to construct heterogeneous substrates from a single building material via stereolithography is introduced. The dynamic variation of air cavities within the bulk material is used to control the effective permittivity of the host medium. The digitally driven layer process enables full three-dimensional variation of the local permittivity. The high resolution of stereolithography enables sub-millimetre control of air inclusion features. Measurements of the effective permittivity with different air fractions have been compared to analytical results.
Keywords :
permittivity; production engineering computing; rapid prototyping (industrial); stereolithography; substrates; three-dimensional printing; voids (solid); additively manufactured heterogeneous substrates; air cavities; air inclusion features; building material; bulk material; digitally driven layer process; effective permittivity; local permittivity; stereolithography; sub-millimetre control; three-dimensional control;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.1174
