Nanoporous distributed Bragg reflectors on free-standing nonpolar m-plane GaN

2018 ◽  
Vol 112 (4) ◽  
pp. 041109 ◽  
Author(s):  
Saadat Mishkat-Ul-Masabih ◽  
Ting Shan Luk ◽  
Ashwin Rishinaramangalam ◽  
Morteza Monavarian ◽  
Mohsen Nami ◽  
...  
2007 ◽  
Vol 7 (11) ◽  
pp. 4165-4168
Author(s):  
Jihoon Kim ◽  
Youngdae Koh ◽  
Seunghyun Jang ◽  
Young Chun Ko ◽  
Hee-Gweon Woo ◽  
...  

Well defined 1-dimentional (1-D) photonic crystals of polymer replicas have been successfully obtained. DBR porous silicon containing nanometer-scale pores are prepared by an anodic electrochemical etch of p++-type silicon wafer. The resulting DBR porous silicon film removed from the substrate by applying an electropolishing current has been thermally oxidized in the furnace at 400 °C for 3 h. Oxidized DBR PSi/polystyrene composite films are prepared by casting of polymer solution onto a free-standing porous silicon photonic crystal layer. Flexible photonic polymer replicas have been prepared after the removal of oxidized DBR PSi matrix in HF/H2O mixture solution. Polymer replicas exhibit a sharp resonance in the reflectivity spectrum. Optical characteristics of photonic polymer replica indicate that the surface of polymer film has a negative structure of DBR PSi. This replica is stable in aqueous solutions for several days without any degradation.


2007 ◽  
Vol 7 (11) ◽  
pp. 4165-4168 ◽  
Author(s):  
Jihoon Kim ◽  
Youngdae Koh ◽  
Seunghyun Jang ◽  
Young Chun Ko ◽  
Hee-Gweon Woo ◽  
...  

Well defined 1-dimentional (1-D) photonic crystals of polymer replicas have been successfully obtained. DBR porous silicon containing nanometer-scale pores are prepared by an anodic electrochemical etch of p++-type silicon wafer. The resulting DBR porous silicon film removed from the substrate by applying an electropolishing current has been thermally oxidized in the furnace at 400 °C for 3 h. Oxidized DBR PSi/polystyrene composite films are prepared by casting of polymer solution onto a free-standing porous silicon photonic crystal layer. Flexible photonic polymer replicas have been prepared after the removal of oxidized DBR PSi matrix in HF/H2O mixture solution. Polymer replicas exhibit a sharp resonance in the reflectivity spectrum. Optical characteristics of photonic polymer replica indicate that the surface of polymer film has a negative structure of DBR PSi. This replica is stable in aqueous solutions for several days without any degradation.


2021 ◽  
pp. 131621
Author(s):  
Jie Liu ◽  
Yuan Yu ◽  
Xiaokun Yang ◽  
Rongrong Chen ◽  
Caina Luan ◽  
...  

APL Photonics ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 026104
Author(s):  
Mirela Malekovic ◽  
Esteban Bermúdez-Ureña ◽  
Ullrich Steiner ◽  
Bodo D. Wilts

1977 ◽  
Vol 16 (8) ◽  
pp. 1389-1394 ◽  
Author(s):  
Masahiro Okuda ◽  
Kiyoshi Onaka ◽  
Shigeharu Kita

2016 ◽  
Vol 25 (9) ◽  
pp. 097302
Author(s):  
Linlin Tu ◽  
Chi Zhang ◽  
Zhong Huang ◽  
Jason Yau ◽  
Peng Zhan ◽  
...  

2008 ◽  
Vol 93 (22) ◽  
pp. 221905 ◽  
Author(s):  
D. Mangaiyarkarasi ◽  
M. B. H. Breese ◽  
Y. S. Ow

2016 ◽  
Vol 120 (13) ◽  
pp. 135703 ◽  
Author(s):  
A. Franke ◽  
M. P. Hoffmann ◽  
R. Kirste ◽  
M. Bobea ◽  
J. Tweedie ◽  
...  

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