Development Of Photonic And Thermodynamic
Crystals Conforming To Sustainability Conscious
Materials Tectonics
Author(s)
S. Kirihara, N. Ohta, T. Niki, Y. Uehara & S. Tasaki
Abstract
Photonic crystals with periodic variations in dielectric constants can exhibit band
gaps in transmission spectra of electromagnetic waves through Bragg
diffractions. Introduced structural defects can confine the electromagnetic
energies at specific wavelengths, and localized modes of transmission peaks can
be formed in above mentioned forbidden gaps. Moreover, thermodynamic
crystals with periodically percolated morphologies of metals and ceramics can
realize uniform dispersions in thermal and kinetic energies effectively.
Introduced artificial dislocations or graded structures into the ideal periodicities
realize heat and stress flow controls intentionally. These artificial crystals were
processed by micro stereolithography. The electromagnetic wave transmittances,
thermal conductivities and mechanical properties for the formed photonic and
thermodynamic crystals were measured and compared with simulated results.
The photonic and thermodynamic crystals will be applied to novel
electromagnetic wave resonators and mechanical tools, respectively. Effective
energy flow control with reducing losses will be realized along sustainability
conscious strategies of artificial materials tectonics.
Keywords: photonic crystal, thermodynamic crystal, stereolithography.
1 Introduction
Photonic crystals with periodic arrangements of dielectric lattices can form
forbidden gaps in electromagnetic waves spectra [1, 2]. These artificial crystals
can totally reflect the light or electromagnetic waves at wavelengths comparable
to the lattice spacing by Bragg deflection. The introduced structural defects in
the periodic arrangements can localize the electromagnetic wave energies and
Keywords
photonic crystal, thermodynamic crystal, stereolithography
Related Book
Other papers in this volume
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