TITLE

Avoiding cracks in self-assembled photonic band-gap crystals

AUTHOR(S)
Chabanov, A.A.; Jun, Y.; Norris, D.J.
PUB. DATE
May 2004
SOURCE
Applied Physics Letters;5/3/2004, Vol. 84 Issue 18, p3573
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
Thin colloidal crystals (or synthetic opals) composed of StÃ¶ber silica spheres typically develop cracks when they are utilized to obtain photonic band-gap crystals (or inverted opals). We find that, by sintering the silica spheres prior to assembly of the opal, these cracks can be avoided. We report the effects of temperature and duration of the heat treatment on 850 nm silica spheres using electron microscopy, thermogravimetry, and light scattering. We also find a large dependence of the refractive index of the silica on the temperature of the heat treatment. This may allow tuning of the refractive index of silica spheres. Â© 2004 American Institute of Physics.
ACCESSION #
12930029

Related Articles

• Room temperature polariton luminescence from a GaN/AlGaN quantum well microcavity. Feltin, E.; Christmann, G.; Butté, R.; Carlin, J.-F.; Mosca, M.; Grandjean, N. // Applied Physics Letters;8/14/2006, Vol. 89 Issue 7, p071107

The authors report on the demonstration of strong light-matter coupling at room temperature using a crack-free UV microcavity containing GaN/AlGaN quantum wells (QWs). Lattice-matched AlInN/AlGaN distributed Bragg reflectors (DBRs) with a maximum peak reflectivity of 99.5% and SiO2/Si3N4 DBRs...

• Effect of grain-boundary behavior on the dc electric conduction in Rb-doped CaCuTiO. Yang, Zhi; Zhang, Yue; Zhang, Kun; Yin, Di; Xiong, Rui; Shi, Jing // Journal of Materials Science: Materials in Electronics;Mar2013, Vol. 24 Issue 3, p1063

CaRbCuTiO ( x = 0, 0.03, 0.05, 0.07 and 0.09) ceramics have been synthesized by the sol-gel method. The results of X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis indicate that a small amount of CuO and the grain boundary layers with Cu-rich and Ti-poor...

• A novel method to measure the strength of CygelTM by using two dimensional photonic crystal struct ures. Palai, G.; Tripathy, S. K.; Muduli, N.; Patnaik, D.; Patnaik, S. K. // AIP Conference Proceedings;7/23/2012, Vol. 1461 Issue 1, p383

A novel method to measure the strength of Cygel{trade mark, serif} is presented in this paper. The principle of measurement is based on linear variation of photonic band gap with the strength of Cygel{trade mark, serif}. Photonic band gap is obtained using plane wave expansion (PWE) method.

• Shallow-Deep InGaN Multiple-Quantum-Well System for Dual-Wavelength Emission Grown on Semipolar ( $$11\bar{2}2$$) Facet GaN. Wang, Lianshan; Lu, Zhiqin; Liu, Sheng; Feng, Zhe // Journal of Electronic Materials;Jul2011, Vol. 40 Issue 7, p1572

We report growth and characterization of a shallow-deep InGaN/GaN multiple-quantum-well (MQW) system for dual-wavelength emission grown on semipolar ( $$11\bar{2}2$$) facet GaN. Structural and optical properties of the InGaN multiple-quantum-well system were investigated by scanning electron...

• Zero dispersion at small group velocities in photonic crystal waveguides. Petrov, A. Yu.; Eich, M. // Applied Physics Letters;11/22/2004, Vol. 85 Issue 21, p4866

Modes of photonic crystal (PC) line-defect waveguides can have small group velocity away from the Brillouin zone edge. This property can be explained by the strong interaction of the modes with the bulk PC. An anticrossing of â€œindex guidedâ€ and â€œgap guidedâ€ modes should...

• Enhanced photodetection in graphene-integrated photonic crystal cavity. Shiue, Ren-Jye; Gan, Xuetao; Gao, Yuanda; Li, Luozhou; Yao, Xinwen; Szep, Attila; Walker, Dennis; Hone, James; Englund, Dirk // Applied Physics Letters;12/9/2013, Vol. 103 Issue 24, p241109

We demonstrate the controlled enhancement of photoresponsivity in a graphene photodetector by coupling to slow light modes in a long photonic crystal linear defect cavity. Near the Brillouin zone (BZ) boundary, spectral coupling of multiple cavity modes results in broad-band photocurrent...

• Effect of a photonic band gap on scattering from waveguide disorder. Povinelli, M.L.; Johnson, Steven G.; Lidorikis, Elefterios; Joannopoulos, J.D.; Soljačić, Marin // Applied Physics Letters;5/3/2004, Vol. 84 Issue 18, p3639

We derive a general, analytical, coupled-mode theory for disorder-induced scattering in periodic systems that shows that in the experimentally relevant limit of weak disorder, the reflection in a photonic-crystal waveguide is just as low as in a comparable index-guided waveguide. Moreover, since...

• Band structure of terahertz metallic photonic crystals with high metal filling factor. Reinhard, Benjamin; Torosyan, Garik; Beigang, René // Applied Physics Letters;5/19/2008, Vol. 92 Issue 20, p201107

The excitation of resonant eigenmodes in two-dimensional metallic photonic crystals by incident terahertz pulses is both experimentally and numerically investigated. Transmission experiments are in excellent agreement with numerical calculations of the crystalsâ€™ photonic band structures...

• Physics Update. Benka, Stephen G. // Physics Today;May2005, Vol. 58 Issue 5, p9

Discusses research being done on the imaging of the Brillouin zones of photonic lattices. Reference to a study by G. Bartal and colleagues, published in the "Physical Review Letters"; Role of Bragg diffraction of laser light in the technique used in imaging the Brillouin zones of photonic...

Share