Optical limiting response by embedding copper phthalocyanine into polymer host

2009 ◽  
Vol 282 (12) ◽  
pp. 2426-2430 ◽  
Author(s):  
Ulaş Kürüm ◽  
Tanju Ceyhan ◽  
Ayhan Elmali ◽  
Özer Bekaroğlu
Keyword(s):  
Copper Phthalocyanine ◽  
Optical Limiting ◽  
Polymer Host

Enhancement of optical limiting response by embedding gallium phthalocyanine into polymer host

2007 ◽  
Vol 189 (2-3) ◽  
pp. 414-417 ◽  
Author(s):  
Yu Chen ◽  
Nan He ◽  
J.J. Doyle ◽  
Ying Liu ◽  
Xiaodong Zhuang ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Polymer Host

Polymer host materials for optical limiting

1998 ◽  
Author(s):  
Hao Jiang ◽  
Michael E. De Rosa ◽  
Weigie Su ◽  
Mark C. Brant ◽  
Daniel G. McLean ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Host Materials ◽  
Polymer Host

Good optical limiting performance of indium and gallium phthalocyanines in a solution and co-polymer host

2009 ◽  
Vol 12 (1) ◽  
pp. 015208 ◽  
Author(s):  
Mustafa Yüksek ◽  
Ayhan Elmali ◽  
Mahmut Durmuş ◽  
H Gul Yaglioglu ◽  
Hüseyin Ünver ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Polymer Host

Metallo-diphthalocyanine embedded polymer host for nanosecond optical limiting

2004 ◽  
Author(s):  
B. Aneeshkumar ◽  
P. Gopinath ◽  
P. Radhakrishnan ◽  
V.P.N. Nampoori ◽  
C.P.G. Vallabhan ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Polymer Host

Nanosecond optical limiting response of sandwich-type neodymium dyphthalocyanine in a co-polymer host

2004 ◽  
Vol 143 (2) ◽  
pp. 197-201 ◽  
Author(s):  
B Aneeshkumar ◽  
Pramod Gopinath ◽  
Jayan Thomas ◽  
C.P.G Vallabhan ◽  
V.P.N Nampoori ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Sandwich Type ◽  
Polymer Host

Optical limiting property of nanoparticles from a copper phthalocyanine-fullerene dyad

2005 ◽  
Vol 94 (2-3) ◽  
pp. 444-448 ◽  
Author(s):  
Zhiyuan Tian ◽  
Chenjuan He ◽  
Chunlin Liu ◽  
Wensheng Yang ◽  
Jiannian Yao ◽  
...  
Keyword(s):  
Copper Phthalocyanine ◽  
Optical Limiting ◽  
Limiting Property

High-Resolution Cryo-Electron Microscopy of Biological Macromolecules

1990 ◽  
Vol 48 (1) ◽  
pp. 126-127
Author(s):  
Yoshinori Fujiyoshi
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Diffraction Pattern ◽  
Superfluid Helium ◽  
Copper Phthalocyanine ◽  
Optical Diffraction ◽  
Irradiation Damage ◽  
Biological Macromolecules ◽  
Cross Sectional ◽  
Instrumental Resolution

The resolution of direct images of biological macromolecules is normally restricted to far less than 0.3 nm. This is not due instrumental resolution, but irradiation damage. The damage to biological macromolecules may expect to be reduced when they are cooled to a very low temperature. We started to develop a new cryo-stage for a high resolution electron microscopy in 1983, and successfully constructed a superfluid helium stage for a 400 kV microscope by 1986, whereby chlorinated copper-phthalocyanine could be photographed to a resolution of 0.26 nm at a stage temperature of 1.5 K. We are continuing to develop the cryo-microscope and have developed a cryo-microscope equipped with a superfluid helium stage and new cryo-transfer device.The New cryo-microscope achieves not only improved resolution but also increased operational ease. The construction of the new super-fluid helium stage is shown in Fig. 1, where the cross sectional structure is shown parallel to an electron beam path. The capacities of LN2 tank, LHe tank and the pot are 1400 ml, 1200 ml and 3 ml, respectively. Their surfaces are placed with gold to minimize thermal radiation. Consumption rates of liquid nitrogen and liquid helium are 170 ml/hour and 140 ml/hour, respectively. The working time of this stage is more than 7 hours starting from full LN2 and LHe tanks. Instrumental resolution of our cryo-stage cooled to 4.2 K was confirmed to be 0.20 nm by an optical diffraction pattern from the image of a chlorinated copper-phthalocyanine crystal. The image and the optical diffraction pattern are shown in Fig. 2 a, b, respectively.

Linear and Nonlinear Optical Properties of Natural Dyes Freestanding Films and Application in Optical Limiting

2020 ◽  
pp. 139-143
Keyword(s):  
Absorption Coefficient ◽  
Water Solution ◽  
Optical Limiting ◽  
Refraction Index ◽  
Laser Wavelength ◽  
Solid State Laser ◽  
Natural Dyes ◽  
Linear And Nonlinear ◽  
532 Nm ◽  
Absorbance Spectra

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.

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