In this study, a combined system of microneedles and a triboelectric nanogenerator (TENG) has been developed for drug delivery. A triboelectric device, which converts mechanical energy into alternating current (AC), was chosen to replace the electrophoresis (EP) effect. To directly generate triboelectricity from salmon deoxyribonucleic acid (SDNA)-based microneedles, a triboelectric series of SDNA film and chargeable polymers (polyimide and Teflon) was studied.
View Article and Find Full Text PDFWe report the realization of a transparent display using glass covered by a nanopatterned quantum dot (QD) film with good transmittance. The film was fabricated by nanoimprint lithography (NIL) and spin coating of colloidal QDs with specificexcitation maxima. The produced nanopatterned QD film was attached to transparent glass, enabling active image generation using a laser light source of a specific wavelength.
View Article and Find Full Text PDFMicroneedles, fabricated by nano-moulding technology show great promise in the field of drug delivery by enabling the painless self-administration of drugs in a patient-friendly manner. In this study, double-stranded salmon DNA (SDNA) was used as both a drug-delivery vehicle and structural material with a microneedle system. SDNA is non-toxic and demonstrates good mechanical robustness, mouldability, biocompatibility, bio-absorbability, and binding affinity with drug molecules for bio-functional applications.
View Article and Find Full Text PDFObjective: To confirm the advantages of the enhanced depth imaging (EDI) mode over the standard mode of the Heidelberg Spectralis spectral domain optical coherence tomography (SD-OCT) for imaging of the lamina cribrosa, and to compare laminar thicknesses of various glaucoma types with or without disc hemorrhage in a similar state of visual field loss.
Design: Cross-sectional, case-control design.
Participants: We included 137 glaucoma patients and 49 healthy controls.
Thyroxine is the tyrosine based hormone produced by the thyroid gland, containing a chiral center in its molecular structure. Synthetic thyroxine is commercially available to treat thyroid dysfunctions, but only a few direct analytical methods to determine its optical purity have been reported. This study attempted to find an optimized liquid chromatographic condition for direct enantiomer separation on crown ether type chiral stationary phase.
View Article and Find Full Text PDF