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Nanostructured apatites grown by laser floating zone
摘要： Apatites (AP) ceramics are important due to their application in the orthopaedics field as bioceramic material. Several processes to produce apatites such as oxyapatite (OAP) and hydroxyapatite (HA) materials are used to apply as a temporary substitute for human bone. In the present work, AP powders were prepared by high-energy ball milling and then by laser floating zone (LFZ) technique to transform into a dense cylinder (fibre). The effect of LFZ processing conditions was assessed by structural and electric characterization. Fibres present strong densification and a uniform polycrystalline microstructure, which could favour the use for natural bone treatments and as bio-sensors. However, further work must be assessed to optimize laser processing conditions.
关键词： Bioceramic,Apatites,Laser floating zone,Bio-sensors,Bone treatment,Hydroxyapatite,Oxyapatite
更新于2025-09-23 15:21:01
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A Review: Evolution and Diversity of Optical Fibre Plasmonic Sensors
摘要： The purpose of this review is to bring to the attention of the wider research community how two quite different optical sensory techniques were integrated resulting in a sensor device of exceptional sensitivity with wide ranging capability. Both authors have collaborated over a 20 year period, each researching initially surface plasmon resonance (SPR) and optical fibre Bragg grating devices. Our individual research, funded in part by EPSRC and industry into these two areas, converged, resulting in a device that combined the ultra-sensitive working platform of SPR behavior with that of fibre Bragg grating development, which provided a simple method for SPR excitation. During this period, they developed a new approach to the fabrication of nano-structured metal coatings for plasmonic devices and demonstrated on fibre optic platform, which has created an ultra-sensitive optical sensing platform. Both authors believe that the convergence of these two areas will create opportunities in detection and sensing yet to be realised. Furthermore, giving the reader “sign-post” research articles to help to construct models to design sensors and to understand their experimental results.
关键词： gratings,optical fiber sensors,bio-sensors,plasmonic nanostructures
更新于2025-09-12 10:27:22