Tunable High Refractive Index Polymer Hybrid and Polymer–Inorganic Nanocomposite Coatings

Ritchie, A.W.; Gonabadi, Hassan; Bull, Steve; Badyal, J. P. S.

doi:10.1021/acsami.1c07372

Cited by 15 publications

(22 citation statements)

References 72 publications

(159 reference statements)

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“…Photonic-aimed polymers provide good transparency in the visible and near-infrared wavelength ranges. Still, their lower refractive indices (usually between 1.3 and 1.7 in the visible [33], up to 1.936 [34]) compared to Si (n g = 3.6 @λ = 1.550 µm) provide weaker mode confinement and thus larger waveguide bending losses. As a result, the PRR dimensions must be much larger, which narrows the free spectral range between resonance peaks, thus reducing the control over the device output.…”

Section: Feasibility Studymentioning

confidence: 99%

Quantum random walks in coupled photonic ring resonators

Adão¹,

Caño‐García²,

Nieder³

et al. 2022

Preprint

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Quantum random walks use interference for faster state space exploration, which can be used for algorithmic purposes. Photonic technologies provide a natural platform for many recent experimental demonstrations. Here we analyze quantum random walks implemented by coherent light propagation in series-coupled photonic ring resonators. We propose a family of graphs modeling these devices and compare quantum and classical random walks on these structures, calculating steady-state and time-dependent solutions. We obtain conditions for quantum advantage in this setting and show how to recover classical random walks by averaging over quantum phases. Preliminary device feasibility tests are carried out via simulations and experimental results using polymeric directional couplers.

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Section: Feasibility Studymentioning

confidence: 99%

Quantum random walks in coupled photonic ring resonators

Adão¹,

Caño‐García²,

Nieder³

et al. 2022

Preprint

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“…The higher the content of inorganic nanoparticles in the polymer matrix, the worse the transparency of polymers. [61,62] The introduction of some flame retardants may reduce the mechanical strength of composites to a certain extent. [63,64] The increase in refractive index is accompanied by an increase in dispersion.…”

Section: Introductionmentioning

confidence: 99%

Enhancing mechanical, thermal property and flame retardancy of optical polythiourethane with self‐assembly phosphazene nanoparticles

2022

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Polythiourethane (PTU) has attracted considerable attention in engineering building materials. Here, based on phosphazene nanoparticles (PZS‐1 and PZS‐2) prepared by water‐triggered and ultrasonic self‐assembly method, phosphazene/polythiourethane (PZS/PTU) composites with excellent mechanical strength, high flame retardancy and good transparency was obtained. Then, the comprehensive properties of both composites were evaluated, where PZS‐2 endowed PTU with better overall performance. Due to the good dispersibility of PZS and its strengthed interfacial interaction with PTU matrix, both PZS significantly enhanced mechanical and thermal property of PTU, where the tensile strength and glass transition temperature of PZS/PTU composites reached to 84.34 MPa and 59.94°C respectively. More importantly, compared to pure PTU, the values of peak heat release rate (HRR), total heat release rate (THR), smoke production rate (SPR), and total smoke production (TSP) of composites were decreased by 10.5%, 13.3%, 30.6% and 18.0%, respectively. The limiting oxygen index of composites was improved to 21.39% due to the catalytic carbonization of PZS, the expanded carbon layer and the incombustible gases released during combustion. Meanwhile, the PZS/PTU composite exhibited the high refractive index of 1.6580 and good transparency (not less than 85% at 500 nm). The PZS/PTU composite was promising candidates for optical flame retardant coatings and engineering building materials.

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“…24 However, the filler surface modification may be used as an effective way to solve the problem. [25][26][27][28] The acid surface modification of titanium dioxide nanoparticles showed good compatibility with hydrophilic moieties of polymer, hence result in remarkable filler loading and maximum RI of 1.77. 27 According to the method developed 29 the zinc sulfide nanoparticles were almost well dispersed and immobilized in polythiourethane matrix resulted in nanocomposite with RI of up to 1.848.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the efficacy of the most mineral compounds such as titanium oxide, zinc sulfide, the efficient dispersion of mineral particles in the polymer matrix still remains a big challenge and the improper dispersion of inorganic species may be regarded as main source of the film opacity. 26,28 In this study, two types of aromatic monomers; an aromatic monomer based on GMA and an ionic monomer based on biocompatible 2-hydroxyl ethyl methacrylate; HEMA were developed. A new type of epoxy acrylate oligomer based on phthalic anhydride was also prepared.…”

Section: Introductionmentioning

confidence: 99%

“…Note that the filler agglomeration is noteworthy for the instability of composite optical property 24 . However, the filler surface modification may be used as an effective way to solve the problem 25–28 . The acid surface modification of titanium dioxide nanoparticles showed good compatibility with hydrophilic moieties of polymer, hence result in remarkable filler loading and maximum RI of 1.77 27 .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and evaluation of novel aromatic acrylic monomers for optically clear adhesive with high refractive index

Bolagh

Salimi

Kabiri

et al. 2022

J of Applied Polymer Sci

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Conventional optical polymers have low refractive index; (RI <1.5) which limit their usage in the field of optoelectronics. Therefore, two types of aromatic monomers with high RI value were developed; that is, ionic monomer (PA.HEMA.NEt3.H+) with RI = 1.5150 and monomer (PA.BA.GMA) with RI = 1.5403. The monomers were then individually combined with a newly synthesized oligomer based on phthalic anhydride epoxy acrylate; that is, (EA.PA) with RI = 1.5567. The structures of the synthesized monomers and oligomer were confirmed by NMR and FTIR spectroscopy and the chemical titration of the structure end groups. Different combinations of the monomers with oligomer EA.PA were examined to develop a UV‐curing adhesive with appropriate viscosity. According to TGA and DMTA test results, the composition containing oligomer EA.PA showed improved thermal degradation stability and high glass transition temperature. The lap shear adhesion test showed positive effect of oligomer EA.PA and PA.BA.GMA with an adhesion strength of up to 1.2 MPa. The RI value of the composition containing PA.BA.GMA and oligomer EA.PA was measured as 1.55 which is qualified for the most applications in optoelectronic. The improvement in RI value may be well attributed to the presence of aromatic rings in the polymer chain backbone. The high degree of aromaticity is in favor with the improved thermal stability in adhesive composition.

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Tunable High Refractive Index Polymer Hybrid and Polymer–Inorganic Nanocomposite Coatings

Cited by 15 publications

References 72 publications

Quantum random walks in coupled photonic ring resonators

Quantum random walks in coupled photonic ring resonators

Enhancing mechanical, thermal property and flame retardancy of optical polythiourethane with self‐assembly phosphazene nanoparticles

Synthesis and evaluation of novel aromatic acrylic monomers for optically clear adhesive with high refractive index

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