TY - JOUR
T1 - Controlled gradient colloidal photonic crystals and their optical properties
AU - Huang, He
AU - Chen, Junbo
AU - Yu, Ye
AU - Shi, Zengmin
AU - Möhwald, Helmuth
AU - Zhang, Gang
N1 - Funding Information:
Manuscript received September 8, 1998. This work was supported by the US Air Force, Wright Laboratory under Contract F33615-98-C-1214. A. Darwish, A. Ezzeddine, and H. C. Huang are with AMCOM Communicates, Inc., Clarksburg, MD 20871 USA. M. Mah is with the Air Force Research Laboratory, Wright Patterson AFB, OH 45433 USA. Publisher Item Identifier S 1051-8207(99)05517-8.
PY - 2013/7/5
Y1 - 2013/7/5
N2 - Gradient colloidal photonic crystals (GCPCs) with gradients over sub-micrometer dimensions were fabricated by a plasma etching method. The gradient (along the surface normal) could be controlled by plasma treatment, leading to a wider tuning range of the stop band compared with colloidal photonic crystals (CPCs) without gradient. Spheres were non-close-packed (ncp) after plasma treatment, which provided larger voids for filling with materials to further tune the stop band of the GCPCs. Furthermore, GCPCs were used as templates to fabricate the corresponding inverse opals. The stop band of the inverse opal could also be modified through changing the filling materials and the templates of GCPCs. The GCPCs exhibited an 8.6-fold enhancement of fluorescence emission of Rhodamine B. According to the tunable optical property of GCPCs, they could be used in fields such as photonics, catalysis and life science.
AB - Gradient colloidal photonic crystals (GCPCs) with gradients over sub-micrometer dimensions were fabricated by a plasma etching method. The gradient (along the surface normal) could be controlled by plasma treatment, leading to a wider tuning range of the stop band compared with colloidal photonic crystals (CPCs) without gradient. Spheres were non-close-packed (ncp) after plasma treatment, which provided larger voids for filling with materials to further tune the stop band of the GCPCs. Furthermore, GCPCs were used as templates to fabricate the corresponding inverse opals. The stop band of the inverse opal could also be modified through changing the filling materials and the templates of GCPCs. The GCPCs exhibited an 8.6-fold enhancement of fluorescence emission of Rhodamine B. According to the tunable optical property of GCPCs, they could be used in fields such as photonics, catalysis and life science.
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U2 - 10.1016/j.colsurfa.2013.03.041
DO - 10.1016/j.colsurfa.2013.03.041
M3 - Article
AN - SCOPUS:84876337436
SN - 0927-7757
VL - 428
SP - 9
EP - 17
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -