THIN COLLOIDAL CRYSTALS : STRUCTURES AND OPTICAL PROPERTIES

1985 ◽  
Vol 46 (C3) ◽  
pp. C3-323-C3-324
Author(s):  
B. Pansu ◽  
P. Pieraski
Keyword(s):  
Optical Properties ◽  
Colloidal Crystals

scholarly journals Improving the optical properties of vinyl-functionalized silica colloidal crystals by thermal annealing

2010 ◽  
Vol 118 (1382) ◽  
pp. 862-866
Author(s):  
Tian-Song DENG ◽  
Jun-Yan ZHANG ◽  
Kong-Tao ZHU ◽  
Qi-Feng ZHANG ◽  
Jin-Lei WU
Keyword(s):  
Optical Properties ◽  
Thermal Annealing ◽  
Colloidal Crystals ◽  
Functionalized Silica ◽  
Silica Colloidal Crystals

scholarly journals Optical Materials: Gold Binary-Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties (Small 12/2014)

Small ◽  
2014 ◽  
Vol 10 (12) ◽  
pp. 2373-2373
Author(s):  
Guangqiang Liu ◽  
Xinhua Li ◽  
Wenbo Wang ◽  
Fei Zhou ◽  
Guotao Duan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Materials ◽  
Colloidal Crystals

High tunable optical properties of monolayer corrugated hetero-colloidal crystals

2014 ◽  
Vol 116 ◽  
pp. 382-385 ◽  
Author(s):  
Z.Q. Liu ◽  
G.Q. Liu ◽  
J. Chen ◽  
Y. Hu ◽  
X.N. Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Colloidal Crystals ◽  
Tunable Optical Properties

FABRICATION AND OPTICAL PROPERTIES OF METAL-COATED NON-CLOSE-PACKED COLLOIDAL CRYSTALS

2009 ◽  
Vol 18 (04) ◽  
pp. 633-640
Author(s):  
ANNA MUSTONEN ◽  
HARRI LIPSANEN
Keyword(s):  
Optical Properties ◽  
Optical Transmission ◽  
Reactive Ion Etching ◽  
Colloidal Crystals ◽  
Nanosphere Lithography ◽  
Optical Response ◽  
Ion Etching ◽  
Circular Holes ◽  
Shell Particles

We present a study of optical transmission through metal-coated non-close-packed colloidal crystals. The arrays combine semi-shell particles and circular holes simultaneously. We show that the optical response of the structures can be tuned by altering the size of the semi-shell particles and holes. The non-close-packed colloidal crystals were fabricated using modified nanosphere lithography and reactive ion etching.

scholarly journals Nonlinear optical properties of synthesized porous nanostructures PMMA via template-directed methods

2019 ◽  
Vol 13 (28) ◽  
pp. 10-18
Author(s):  
Zainab F. Al-Bawi
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Visible Region ◽  
Colloidal Crystals ◽  
Nonlinear Optical Properties ◽  
Photon Absorption ◽  
Sphere Diameter ◽  
Face Centered Cubic ◽  
Two Photon Absorption ◽  
Face Centered

Colloidal crystals (opals) made of close-packed polymethylmethacrylate (PMMA) were fabricated and grown by Template-Directed methods to obtain porous materials with well-ordered periodicity and interconnected pore systems to manufacture photonic crystals. Opals were made from aqueous suspensions of monodisperse PMMA spheres with diameters between 280 and 415 nm. SEM confirmed the PMMA spheres crystallized uniformly in a face-centered cubic (FCC) array. Optical properties of synthesized pores PMMA were characterized by UV–Visible spectroscopy. It shows that the colloidal crystals possess pseudo photonic band gaps in the visible region. A combination of Bragg’s law of diffraction and Snell’s law of refraction were used to calculate the sphere diameter. Finally, colloidal crystals were subjected to Z-scan experiment under pulsed Q-switched Nd:YAG laser illumination to characterize it for third order nonlinear optical properties. Z-scan results show the change in transmittance of a beam, and the nonlinear refractive index is n2 = 9.82787 x 10-12 (cm2/GW), while the nonlinear absorption coefficient β= 0.04673908 (cm/GW). These results were attributed to enhance the self-focusing arising from Kerr effect and the two-photon absorption.

Optical Properties of Compressed Colloidal Crystals with Rhombohedral Structures

2006 ◽  
Vol 45 (No. 26) ◽  
pp. L676-L678
Author(s):  
Masashi Harada ◽  
Masahiko Ishii ◽  
Hiroshi Nakamura
Keyword(s):  
Optical Properties ◽  
Colloidal Crystals

Gold Binary-Structured Arrays Based on Monolayer Colloidal Crystals and Their Optical Properties

Small ◽  
2014 ◽  
Vol 10 (12) ◽  
pp. 2374-2381 ◽  
Author(s):  
Guangqiang Liu ◽  
Xinhua Li ◽  
Wenbo Wang ◽  
Fei Zhou ◽  
Guotao Duan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Colloidal Crystals
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