scholarly journals Semiconductor Three-Dimensional Photonic Crystals with Novel Layer-by-Layer Structures

Photonics ◽  
2016 ◽  
Vol 3 (2) ◽  
pp. 34 ◽  
Author(s):  
Satoshi Iwamoto ◽  
Shun Takahashi ◽  
Takeyoshi Tajiri ◽  
Yasuhiko Arakawa
Keyword(s):  
Photonic Crystals ◽  
Three Dimensional ◽  
Layer By Layer ◽  
Layer Structures

Waveguide networks in three-dimensional layer-by-layer photonic crystals

2004 ◽  
Vol 84 (23) ◽  
pp. 4605-4607 ◽  
Author(s):  
Curtis Sell ◽  
Caleb Christensen ◽  
Jason Muehlmeier ◽  
Gary Tuttle ◽  
Zhi-Yuan Li ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Three Dimensional ◽  
Layer By Layer

Add-drop filters in three-dimensional layer-by-layer photonic crystals using waveguides and resonant cavities

2006 ◽  
Vol 89 (23) ◽  
pp. 231103 ◽  
Author(s):  
Preeti Kohli ◽  
Caleb Christensen ◽  
Jason Muehlmeier ◽  
Rana Biswas ◽  
Gary Tuttle ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Three Dimensional ◽  
Layer By Layer ◽  
Resonant Cavities

scholarly journals Printing 3D Hydrogel Structures Employing Low-Cost Stereolithography Technology

2020 ◽  
Vol 11 (1) ◽  
pp. 12 ◽  
Author(s):  
Leila Samara S. M. Magalhães ◽  
Francisco Eroni Paz Santos ◽  
Conceição de Maria Vaz Elias ◽  
Samson Afewerki ◽  
Gustavo F. Sousa ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Low Cost ◽  
Three Dimensional ◽  
Laser Source ◽  
Layer By Layer ◽  
Polyethylene Glycol Diacrylate ◽  
Glycol Diacrylate ◽  
Layer Structures ◽  
Complex Models ◽  
3D Printed

Stereolithography technology associated with the employment of photocrosslinkable, biocompatible, and bioactive hydrogels have been widely used. This method enables 3D microfabrication from images created by computer programs and allows researchers to design various complex models for tissue engineering applications. This study presents a simple and fast home-made stereolithography system developed to print layer-by-layer structures. Polyethylene glycol diacrylate (PEGDA) and gelatin methacryloyl (GelMA) hydrogels were employed as the photocrosslinkable polymers in various concentrations. Three-dimensional (3D) constructions were obtained by using the stereolithography technique assembled from a commercial projector, which emphasizes the low cost and efficiency of the technique. Lithium phenyl-2,4,6-trimethylbenzoyl phosphonate (LAP) was used as a photoinitiator, and a 404 nm laser source was used to promote the crosslinking. Three-dimensional and vascularized structures with more than 5 layers and resolutions between 42 and 83 µm were printed. The 3D printed complex structures highlight the potential of this low-cost stereolithography technique as a great tool in tissue engineering studies, as an alternative to bioprint miniaturized models, simulate vital and pathological functions, and even for analyzing the actions of drugs in the human body.

Layer-by-layer three-dimensional chiral photonic crystals

2007 ◽  
Vol 32 (17) ◽  
pp. 2547 ◽  
Author(s):  
M. Thiel ◽  
G. von Freymann ◽  
M. Wegener
Keyword(s):  
Photonic Crystals ◽  
Three Dimensional ◽  
Layer By Layer ◽  
Chiral Photonic Crystals

Other topics

2018 ◽  
Author(s):  
Ted Janssen ◽  
Gervais Chapuis ◽  
Marc de Boissieu
Keyword(s):  
Photonic Crystals ◽  
Crystal Morphology ◽  
Three Dimensional ◽  
Icosahedral Quasicrystal ◽  
Crystal Surfaces ◽  
Decagonal Quasicrystal ◽  
System A ◽  
Fundamental Law ◽  
Quasiperiodic Systems ◽  
Aperiodic Crystals

The law of rational indices to describe crystal faces was one of the most fundamental law of crystallography and is strongly linked to the three-dimensional periodicity of solids. This chapter describes how this fundamental law has to be revised and generalized in order to include the structures of aperiodic crystals. The generalization consists in using for each face a number of integers, with the number corresponding to the rank of the structure, that is, the number of integer indices necessary to characterize each of the diffracted intensities generated by the aperiodic system. A series of examples including incommensurate multiferroics, icosahedral crystals, and decagonal quaiscrystals illustrates this topic. Aperiodicity is also encountered in surfaces where the same generalization can be applied. The chapter discusses aperiodic crystal morphology, including icosahedral quasicrystal morphology, decagonal quasicrystal morphology, and aperiodic crystal surfaces; magnetic quasiperiodic systems; aperiodic photonic crystals; mesoscopic quasicrystals, and the mineral calaverite.

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