Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials

Nanoscale ◽  
2018 ◽  
Vol 10 (46) ◽  
pp. 21648-21655 ◽  
Author(s):  
Chi-Young Hwang ◽  
Gi Heon Kim ◽  
Jong-Heon Yang ◽  
Chi-Sun Hwang ◽  
Seong M. Cho ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Optical Components ◽  
Full Color ◽  
Computer Generated Holograms ◽  
Color Computer

Rewritable full-color computer-generated holograms containing phase-change materials are reported.

scholarly journals Correction: Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials

Nanoscale ◽  
2018 ◽  
Vol 10 (47) ◽  
pp. 22635-22635
Author(s):  
Chi-Young Hwang ◽  
Gi Heon Kim ◽  
Jong-Heon Yang ◽  
Chi-Sun Hwang ◽  
Seong M. Cho ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Optical Components ◽  
Full Color ◽  
Computer Generated Holograms ◽  
Color Computer

Correction for ‘Rewritable full-color computer-generated holograms based on color-selective diffractive optical components including phase-change materials’ by Chi-Young Hwang et al., Nanoscale, 2018, DOI: 10.1039/c8nr04471f.

scholarly journals Full-color computer-generated holograms using 3-D Fourier spectra

2004 ◽  
Vol 12 (25) ◽  
pp. 6246 ◽  
Author(s):  
Yusuke Sando ◽  
Masahide Itoh ◽  
Toyohiko Yatagai
Keyword(s):  
Full Color ◽  
Computer Generated Holograms ◽  
Fourier Spectra ◽  
Color Computer

scholarly journals Tunable nanophotonics enabled by chalcogenide phase-change materials

Nanophotonics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 1189-1241 ◽  
Author(s):  
Sajjad Abdollahramezani ◽  
Omid Hemmatyar ◽  
Hossein Taghinejad ◽  
Alex Krasnok ◽  
Yashar Kiarashinejad ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Phase Change ◽  
Phase Change Materials ◽  
Cost Effective ◽  
Optical Components ◽  
Long Term Stability ◽  
Fast Switching ◽  
Emerging Trends ◽  
Unique Material ◽  
Promising Area

AbstractNanophotonics has garnered intensive attention due to its unique capabilities in molding the flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated circuits (PICs) enable the realization of mass-producible, cost-effective, and efficient flat optical components for imaging, sensing, and communications. In order to enable nanophotonics with multipurpose functionalities, chalcogenide phase-change materials (PCMs) have been introduced as a promising platform for tunable and reconfigurable nanophotonic frameworks. Integration of non-volatile chalcogenide PCMs with unique properties such as drastic optical contrasts, fast switching speeds, and long-term stability grants substantial reconfiguration to the more conventional static nanophotonic platforms. In this review, we discuss state-of-the-art developments as well as emerging trends in tunable MSs and PICs using chalcogenide PCMs. We outline the unique material properties, structural transformation, and thermo-optic effects of well-established classes of chalcogenide PCMs. The emerging deep learning-based approaches for the optimization of reconfigurable MSs and the analysis of light-matter interactions are also discussed. The review is concluded by discussing existing challenges in the realization of adjustable nanophotonics and a perspective on the possible developments in this promising area.

Tunable doublet lens based on dielectric metasurface using phase-change material

2020 ◽  
Vol 34 (28) ◽  
pp. 2050313
Author(s):  
Xingyi Li ◽  
Siqi Li ◽  
Guoxi Wang ◽  
Yufang Lei ◽  
Yunfan Hong ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Focal Length ◽  
Infrared Region ◽  
Optical Components ◽  
Mid Infrared ◽  
Infrared Wavelength ◽  
Active Devices ◽  
Coupling System ◽  
Wide Range

Metasurfaces have recently emerged to realize flat optical components with various functions and providing potential capabilities in manufacturing active devices. In this paper, a doublet lens for mid-infrared wavelength with tunable focal length has been proposed. The designed metalens consists of two dielectric metalenses with different focal lengths patterned on a phase-change materials Ge2Sb1Te4. The doublet lens is proved to have above 13% change in the focal length with the crystalline states shifting of the Ge2Sb1Te4. And the designed doublet lens can be operated in mid-infrared region from 2.41 [Formula: see text]m to 2.60 [Formula: see text]m. In addition, chromatic calibration can be achieved by adjusting the crystalline phases of the Ge2Sb1Te4. This compatible metalens promises potential for a wide range of applications in MIR region such as multi-spectrum imaging, optical coupling system and micrography.

Crystallization fractionation technology for paraffin-based phase change materials production

2020 ◽  
pp. 33-38
Author(s):  
S.S. Kruglov (Jr.) ◽  
◽  
G.L. Patashnikov ◽  
S.S. Kruglov (Sr.) ◽  
◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials
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