Chiral nematic liquid crystal (N*‐LC)/aerosil particle (AP) composites were prepared. After the c... more Chiral nematic liquid crystal (N*‐LC)/aerosil particle (AP) composites were prepared. After the composite was sandwiched between ITO glass substrates, the inner surfaces of which had been treated for homogeneous orientation of LC molecules, the LC molecules tended to be aligned with planar texture. Upon the application of an electric filed, a focal conic texture with memory effect was induced and the composite exhibited light scattering. An electric field‐induced homeotropic state was obtained after the application of a high electric field. The effects of the content of the APs and the pitch length of the N*‐LC on the transmittances of the initial state and the focal conic texture, the driven voltage and the memory effect were investigated.
Polymer‐dispersed liquid crystal (PDLC) films were prepared by dual UV and heat curing from UV‐ a... more Polymer‐dispersed liquid crystal (PDLC) films were prepared by dual UV and heat curing from UV‐ and heat‐curable monomers. For PDLC films with a certain amount of the UV‐ and heat‐curable monomers, the mesh size (the size of LC domains) of the polymer network could be adjusted by adjusting the relative content of the two types of monomers, enabling the electro‐optical properties of the film to be optimised.
We report a surface plasmon resonance (SPR) biosensor for online detection of glyphosate. The sur... more We report a surface plasmon resonance (SPR) biosensor for online detection of glyphosate. The surface of the sensing element is decorated with an oligopeptide, TPFDLRPSSDTR, which is identified by using phage display library. This oligopeptide shows high binding specificity for glyphosate (K D = 8.6 μM), probably because of the presence of R and D in the oligopeptide. To detect glyphosate in buffer solution, an SPR gold sensor chip is modified by using the oligopeptide with a surface density of 0.6 1/nm 2 . The sensitivity of this oligopeptide-functionalized SPR biosensor is 1.02 RU/μM whereas the limit of detection (LOD) is 0.58 μM. This oligopeptide functionalized SPR biosensor also shows good specificity against other analytes such as glycine, thiacloprid, and imidacloprid.
Chiral nematic liquid crystal (N*‐LC)/aerosil particle (AP) composites were prepared. After the c... more Chiral nematic liquid crystal (N*‐LC)/aerosil particle (AP) composites were prepared. After the composite was sandwiched between ITO glass substrates, the inner surfaces of which had been treated for homogeneous orientation of LC molecules, the LC molecules tended to be aligned with planar texture. Upon the application of an electric filed, a focal conic texture with memory effect was induced and the composite exhibited light scattering. An electric field‐induced homeotropic state was obtained after the application of a high electric field. The effects of the content of the APs and the pitch length of the N*‐LC on the transmittances of the initial state and the focal conic texture, the driven voltage and the memory effect were investigated.
Polymer‐dispersed liquid crystal (PDLC) films were prepared by dual UV and heat curing from UV‐ a... more Polymer‐dispersed liquid crystal (PDLC) films were prepared by dual UV and heat curing from UV‐ and heat‐curable monomers. For PDLC films with a certain amount of the UV‐ and heat‐curable monomers, the mesh size (the size of LC domains) of the polymer network could be adjusted by adjusting the relative content of the two types of monomers, enabling the electro‐optical properties of the film to be optimised.
We report a surface plasmon resonance (SPR) biosensor for online detection of glyphosate. The sur... more We report a surface plasmon resonance (SPR) biosensor for online detection of glyphosate. The surface of the sensing element is decorated with an oligopeptide, TPFDLRPSSDTR, which is identified by using phage display library. This oligopeptide shows high binding specificity for glyphosate (K D = 8.6 μM), probably because of the presence of R and D in the oligopeptide. To detect glyphosate in buffer solution, an SPR gold sensor chip is modified by using the oligopeptide with a surface density of 0.6 1/nm 2 . The sensitivity of this oligopeptide-functionalized SPR biosensor is 1.02 RU/μM whereas the limit of detection (LOD) is 0.58 μM. This oligopeptide functionalized SPR biosensor also shows good specificity against other analytes such as glycine, thiacloprid, and imidacloprid.
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Papers by Xiaokang Ding