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論文情報
タイトル
Terahertz Wave Resonance Profiles in Micro Patterns of Dielectric Tablets Fabricated by Using Stereolithography of Structural Joining Process
著者
Kirihara, Soshu
Kirihara, Soshu
Hotta, Mikinori
Hotta, Mikinori
Niki, Toshiki
Niki, Toshiki
Ohta, Noritoshi
Ohta, Noritoshi
キーワード等
Dielectric Micro Pattern
Band Gap
Micro-Stereolithography
Terahertz Wave
抄録
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.
公開者
大阪大学接合科学研究所
公開者の別表記
Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
掲載誌名
Transactions of JWRI
巻
38
号
1
開始ページ
7
終了ページ
11
刊行年月
2009-09
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/7469
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.38 No.1 (2009-09)
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著者版フラグ
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.38(1) P.7-P.11
DC.title
Terahertz Wave Resonance Profiles in Micro Patterns of Dielectric Tablets Fabricated by Using Stereolithography of Structural Joining Process
DC.creator
Kirihara, Soshu
Hotta, Mikinori
Niki, Toshiki
Ohta, Noritoshi
DC.publisher
大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2009-09
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/7469
DC.subject
Dielectric Micro Pattern
Band Gap
Micro-Stereolithography
Terahertz Wave
DCTERMS.abstract
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.
citation_title
Terahertz Wave Resonance Profiles in Micro Patterns of Dielectric Tablets Fabricated by Using Stereolithography of Structural Joining Process
citation_author
Kirihara, Soshu
Hotta, Mikinori
Niki, Toshiki
Ohta, Noritoshi
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2009-09
citation_journal_title
Transactions of JWRI
citation_volume
38
citation_issue
1
citation_firstpage
7
citation_lastpage
11
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/7469
citation_keywords
Dielectric Micro Pattern
Band Gap
Micro-Stereolithography
Terahertz Wave