The optimal design of photonic crystal optical devices with step-wise linear refractive index

Ma, Ji; Wu, Xiaofeng; Li, Haibo; Lei, Hong; Liu, Xiaojing; Zhang, Siqi; Wan-jin, Chen; Wu, Yiheng

doi:10.1016/j.optmat.2015.07.024

Cited by 11 publications

(2 citation statements)

References 22 publications

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“…Photonic crystals (PCs), which have a periodic structure with different refractive indexes, have shown promising applications in sensors, − optical devices, − anti-counterfeiting, , and other fields. − Colloidal crystals, that is, 3D periodic arrays of assembled colloids, have been rapidly developed in recent years for their easy fabrication process. − …”

Section: Introductionmentioning

confidence: 99%

Programmable Color in a Free-Standing Photonic Microgel Film with Ultra-Fast Response

Zeng

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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In this work, a free-standing microgel film with programmable and angle-independent structural color is prepared via a simple but effective method. Dried poly(styrene-Nisopropylacrylamide-acrylic acid) (pStNIPAAmAA) microgels were stabilized by inter-microgel crosslinking, and thus, only microgels were used to build the optical hydrogel. The freestanding microgel film displayed tunable structural color by the swelling/deswelling of the microgels under external stimuli, such as temperature, pH, ionic strength, and organic solvent. Moreover, the structural color of the film is angle-independent for the disordered microgel arrays. It is worth noting that programmable color stripes which have the panther chameleon's ability to change skin color are successfully fabricated by patterning microgels with different thermoresponsivities. More importantly, the microgel film has an ultrafast response to temperature (1.41 s from 20 to 40 °C) and pH (2.24 s from pH 8.3 to pH 2.0), much faster than that of most optical materials reported in previous studies.

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Section: Introductionmentioning

confidence: 99%

Programmable Color in a Free-Standing Photonic Microgel Film with Ultra-Fast Response

Zeng

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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“…In Refs. [22]- [27], we have proposed one-dimensional function photonic crystals, which consist of two media: A and B. Their refractive indices are the functions of space position, unlike conventional photonic crystal (PCs), which is constituted by the constant refractive index media A and B.…”

Section: Introductionmentioning

confidence: 99%

Band gaps structure and semi-Dirac point of two-dimensional function photonic crystals

Zhang

Liang

et al. 2017

Chinese Phys. B

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Two-dimensional function photonic crystals, in which the dielectric constants of medium columns are the functions of space coordinates 𝑟, are proposed and studied numerically. The band gaps structures of the photonic crystals for TE and TM waves are different from the two-dimensional conventional photonic crystals. Some absolute band gaps and semi-Dirac points are found. When the medium column radius and the function form of the dielectric constant are modulated, the numbers, width, and position of band gaps are changed, and the semi-Dirac point can either occur or disappear. Therefore, the special band gaps structures and semi-Dirac points can be achieved through the modulation on the two-dimensional function photonic crystals. The results will provide a new design method of optical devices based on the two-dimensional function photonic crystals.

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Theoretical research on enhancement and adjustment of Spin Hall effect of light based on InSb

et al. 2021

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The optimal design of photonic crystal optical devices with step-wise linear refractive index

Cited by 11 publications

References 22 publications

Programmable Color in a Free-Standing Photonic Microgel Film with Ultra-Fast Response

Programmable Color in a Free-Standing Photonic Microgel Film with Ultra-Fast Response

Band gaps structure and semi-Dirac point of two-dimensional function photonic crystals

Theoretical research on enhancement and adjustment of Spin Hall effect of light based on InSb

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