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Physical and Chemical Preparation Techniques and Applications of Photonic Crystals: A Review
CrystalsPhotonic crystals, which are important functional materials, are formed by the periodic arrangement of materials with different dielectric constants that have photonic bandgaps and localization properties. Their preparation methods are primarily physical
Yifan Zhang +6 more
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One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds
Advanced Functional Materials, EarlyView.Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki +7 more
wiley +1 more source
Design and characterisation of photonic quasicrystals from microwave to optical regime [PDF]
, 2010 Photonic band-gap materials are artificially periodic engineered materials with which we can control and manipulate the electromagnetic radiation. The period photonic crystals are well known and have been studied for the last two decades.
Thankamani, Priya Rose
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Macroscopic photonic single crystals via seeded growth of DNA-coated colloids
Nature Communications, 2023 Photonic crystals—a class of materials whose optical properties derive from their structure in addition to their composition—can be created by self-assembling particles whose sizes are comparable to the wavelengths of visible light.
Alexander Hensley +4 more
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Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs [PDF]
, 2009 The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62%, and
Shields, Philip A. +8 more
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Electrostatic Superlattices Beyond 1:1 Stoichiometry
Advanced Functional Materials, EarlyView.Polymer‐mediated charge regulation drives two hierarchical routes to higher‐stoichiometry nanoparticle superlattices. Tuning the polymer's molecular weight promotes progressive interstitial filling, transforming ZnS into the fully occupied CaF2${\rm CaF}_2$ lattice. Exchanging polymer assignment between large and small nanoparticles instead breaks CsCl
Binay P. Nayak +7 more
wiley +1 more source
Nature CommunicationsMechanochromic photonic crystals are attractive due to their force-dependent structural colors; however, showing unrecordable color and unsatisfied performances, which significantly limits their development and expansion toward advanced applications ...
Yang Hu +4 more
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Maxwell Fish-Eye and Half-Maxwell Fish-Eye Based on Graded Photonic Crystals
IEEE Photonics Journal, 2018 We report on the design of the Maxwell fish-eye based on graded photonic crystals. It is a radially graded refractive index structure, whose remarkable property is to form perfect images in the sense of geometrical optics.
Fabian Gaufillet, Eric Akmansoy
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Defect modes in defective one dimensional parity-time symmetric photonic crystal
Scientific Reports, 2023 The introduction of defect layers into one-dimensional parity-time (PT) symmetric photonic crystals gives rise to resonances within the photonic bandgaps. These resonances can be effectively explained by our generalized temporal coupled mode theory.
Tiecheng Wang, Yong Niu
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Understanding the rich physics of light propagation in slow photonic crystal waveguides [PDF]
, 2010 Selected papers. Held as part of SPIE Photonics West 2010.We study propagation losses in slow light photonic crystal waveguides and show that dispersion engineering can reduce the loss.
Lalanne, Phillippe +35 more
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