Colloidal Systems for Photonic, Energy, Biomedical Applications
I am mainly interested in the colloidal superstructures which can be useful for structural colors, metamaterials, transistor, sensors, lithium-ion battery electrodes. Using such colloidal superstructures as templates, porous particles or films can be also prepared, which have been implemented as separators or electrodes in lithium-ion battery, light scatterer for solar cells, substrates for colorimetric sensor or bioadhesives for bioloigical tissues, solid electrolytes for lithium ion battery.
Superstructures by self-assembly |
Colloidal particles have been used as model system for atomic structures as well as building blocks for photonic crystals. New colloidal particles were synthesized and assembled into complex superstructures by self-assembly.
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Porous nanoparticles for bioadhesives
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Using colloidal particles or micelles as templates, macro- or mesoporous materials could be prepared which is now investigated as efficient host materials for drug delivery or colorimetric sensor dye. Porous particles were also implemented for new bioadhesives on hydrogels or biological tissues.
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Solid electrolytes
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Ionic liquid (block co-) polmyers are synthesized and assembled into bicotinuous porous polymer films for solid electrolytes of lithium ion battery.
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Biodegrable polymers |
Biodegradable polymers are shaped into nanoparticles or microspheres by emulsion encapsulation and solvent evaporation process
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Lipid nanoparticles
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Lipid nanoparticles are prepared by self-assembly for gene delivery such as DNA, mRNA as vaccine systems.
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Optical metamaterials |
Gold nanospheres are synthesized by chemically etching octahedron gold nanoparticles with polyDADMAC and assembled into clusters or crystals, which can be utilized as metamolecules or metamaterial film, respectively.
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Photonic Crystals |
Photonic crystals are materials that have a periodic arrangement of refractive index that can interact with light in a unique way. They can be made from a variety of materials, such as semiconductors, metals, and dielectrics.
When light travels through a photonic crystal, it can be selectively reflected or transmitted depending on its wavelength, polarization, and direction of propagation. This property is known as photonic bandgap, and it can be used to control the flow of light in a way that is analogous to the way that electronic bandgaps control the flow of electrons in a solid. One of the most important applications of photonic crystals is in the design of photonic devices, such as lasers, filters, and waveguides. They can also be used to create structural coloration in materials, and have potential applications in solar cells and sensors. In general, photonic crystals have a range of potential applications in optics, electronics, and energy. They offer a new way to manipulate and control light, which could lead to a wide range of innovative technologies and devices. |
Photonic Glasses |
Colloidal glasses are disordered colloidal structures in which positions of colloids are weakly correlated. Thereby, unlike colloidal crystals, they show angle-independent structural colors in UV, visible or IR region depending on the interparticle distance or particle diameter.
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