紀要論文

紀要論文

text

Transactions of JWRI. 2009, 38(1), p. 7-11

Terahertz Wave Resonance Profiles in Micro Patterns of Dielectric Tablets Fabricated by Using Stereolithography of Structural Joining Process

英語

text

2009-09

Materials tectonics is new concept to control energy flows form environmental field to human beings through spatial patterns of ceramics or metals fabricated by using structural joinings. Recently, we have developed two dimensional micro patterns composed of dielectric ceramics in order to control terahertz waves effectively by using stereolithography. In this process, photosensitive resin pastes with titania particles dispersion were spread on a glass substrate with 10 μm in layer thickness by moving a knife edge, and two-dimensional images of ultra violet rays were exposed by using a digital micro-mirror device with 2 μm in part accuracy. Through the layer by layer stacking, periodic structures composed of micro polygon tablets were formed. Dielectric constant of these tablets was measured as 40. Subsequently, the electromagnetic wave properties of these samples were measured by using a terahertz spectroscopic device. In transmission spectra, forbidden bands were observed form 0.33 to 0.57 THz through electromagnetic wave diffractions. Moreover, a localized mode of a transmission peaks was formed in the band gap frequency range. Through transmission line modeling simulations at the peak frequency, electromagnetic energies were concentrated strongly into the thin micro patterns. The terahertz waves are well known to resonate with various types of protein molecules, and expected to control the biological material syntheses through the frequency excitements. Fabricated dielectric ceramic micro patterns are considered to be applied for the new types of reactors to create the useful materials as artificial interfaces between the electromagnetic energy and the biological materials.

10.18910/7469

7469

Terahertz Wave Resonance Profiles in Micro Patterns of Dielectric Tablets Fabricated by Using Stereolithography of Structural Joining Process

大阪大学接合科学研究所

英語

2009-09

Transactions of JWRI

38

1

7

11

https://hdl.handle.net/11094/7469

10.18910/7469

https://doi.org/10.18910/7469