Self-assembly of colloidal Poly(St-MMA-AA) core/shell photonic crystals with tunable structural colors of the full visible spectrum

2019 ◽  
Vol 88 ◽  
pp. 128-133 ◽  
Author(s):  
Chun-Feng Lai ◽  
Jia-Sian Li
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
Visible Spectrum ◽  
Core Shell ◽  
Structural Colors

scholarly journals EXPERIMENTAL STUDY OF 3D SELF-ASSEMBLED PHOTONIC CRYSTALS AND COLLOIDAL CORE-SHELL SEMICONDUCTOR QUANTUM DOTS

2017 ◽  
Vol 24 (1&2) ◽  
pp. 161-170
Author(s):  
Pham Thu Nga ◽  
Vu Duc Chinh ◽  
Nguyen Xuan Nghia ◽  
Nguyen Viet Huy ◽  
Dao Nguyen Thuan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Quantum Dots ◽  
Optical Properties ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Self Assembly ◽  
Photonic Band Gap ◽  
Semiconductor Quantum Dots ◽  
Core Shell ◽  
Sphere Diameter

In this contribution we present an experimental study of 3D opal photonic crystals. The samples are opals constituted by colloidal silica spheres, realized with self-assembly technique. The sphere diameter is selected in order to obtain coupling of the photonic band gap with the emission from CdSe/ZnS colloidal quantum dots. The quantum dots infiltrated in the opals is expected to be enhanced or suppressed depending on the detection angle from the photonic crystal. The structural and optical characterization of the SiO2 opal photonic crystals are performed by field-emission scanning electron microscopy and reflectivity spectroscopy. Measurements performed on samples permits to put into evidence the influence of the different preparation methods on the optical properties. Study of self-activated luminescence of the pure opals is also presented. It is shown that the luminescence of the sample with QDs have original QD emission and not due to the photonic crystal structure. The optical properties of colloidal core-shell semiconductor quantum dots of CdSe/ZnS which are prepared in our lab will be mention.

Invisible photonic prints shown by UV illumination: combining photoluminescent and noniridescent structural colors

2019 ◽  
Vol 7 (38) ◽  
pp. 11776-11782 ◽  
Author(s):  
Dongpeng Yang ◽  
Guolong Liao ◽  
Shaoming Huang
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Uv Light ◽  
The Self ◽  
Light Irradiation ◽  
Structural Colors ◽  
Uv Illumination ◽  
Uv Light Irradiation

Invisible photonic prints that become visible by UV light irradiation were prepared via the self-assembly of Y2O3:Eu colloidal particles into amorphous photonic crystals (APCs) with controlled fluorescent and noniridescent structural colors.

scholarly journals Single Gyroid and Inverse b.c.c. Photonic Crystals in Bird Feathers

2020 ◽  
Author(s):  
Vinodkumar Saranathan ◽  
Suresh Narayanan ◽  
Alec Sandy ◽  
Eric R. Dufresne ◽  
Richard O. Prum
Keyword(s):  
Photonic Crystals ◽  
Self Assembly ◽  
Evolutionary Biology ◽  
Materials Science ◽  
Inverse Opal ◽  
Functional Applications ◽  
Structural Colors ◽  
Ancestral States ◽  
Alternative Routes ◽  
Optical Scale

AbstractVivid, saturated structural colors are a conspicuous and important aspect of the appearance of many organisms. A huge diversity of underlying 3D ordered biophotonic nanostructures has been documented, for instance, within the chitinaceous exoskeletons of insects. Here, we report diverse, highly ordered, intracellular, 3D biophotonic crystals in vivid plumages from three families of birds, which have each evolved independently from quasi-ordered (glassy) ancestral states. These morphologies include exotic bi-continuous single gyroid β-keratin and air networks, inverse b.c.c. and inverse opal (r.h.c.p.) close-packings of air spheres in the medullary β-keratin of feather barbs. These self-assembled avian biophotonic crystals may serve as biomimetic inspiration for advanced multi-functional applications, as they suggest alternative routes to the synthesis of optical-scale photonic crystals, including the experimentally elusive single gyroid.Field CodesMaterials Science and Evolutionary BiologyOne Sentence SummaryEvolutionary disorder-order transitions in bird feathers suggest direct optical scale self-assembly of photonic crystals

Core/Shell Dual‐Responsive Nanocarriers via Iron‐Mineralized Electrostatic Self‐Assembly for Precise Pesticide Delivery

2021 ◽  
pp. 2102027
Author(s):  
Da‐xia Zhang ◽  
Jiang Du ◽  
Rui Wang ◽  
Jian Luo ◽  
Tong‐fang Jing ◽  
...  
Keyword(s):  
Self Assembly ◽  
Core Shell ◽  
Dual Responsive

scholarly journals Correction to Self-Assembly Growth of In-Rich InGaAs Core–Shell Structured Nanowires with Remarkable Near-Infrared Photoresponsivity

Nano Letters ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 2188-2188
Author(s):  
Chen Zhou ◽  
Xu-Tao Zhang ◽  
Kun Zheng ◽  
Ping-Ping Chen ◽  
Wei Lu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Near Infrared ◽  
Core Shell

Magnetic-field-induced self-assembly of FeCo/CoFe2O4 core/shell nanoparticles with tunable collective magnetic properties

Nanoscale ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 4519-4529
Author(s):  
J. Mohapatra ◽  
J. Elkins ◽  
M. Xing ◽  
D. Guragain ◽  
Sanjay R. Mishra ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Physical Properties ◽  
Self Assembly ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Novel Approach ◽  
Core Shell Nanoparticles

Self-assembly of nanoparticles into ordered patterns is a novel approach to build up new consolidated materials with desired collective physical properties.

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