1. Surface modification as an effective approach to enhance the microwave absorbing properties of hollow carbon spheres
- Author
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Li-Dong Zhang, Jie Wu, Zhenfu Xu, Jun-Fan Dang, Hui-Ling Zhu, Hong-Zhi Cui, and Tian-Fang Wang
- Subjects
010302 applied physics ,High concentration ,Materials science ,Polymers and Plastics ,business.industry ,Metals and Alloys ,Dangling bond ,02 engineering and technology ,Unit volume ,021001 nanoscience & nanotechnology ,01 natural sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Biomaterials ,Optics ,0103 physical sciences ,Surface modification ,SPHERES ,Coaxial ,Composite material ,0210 nano-technology ,business ,Microwave - Abstract
The microwave absorbing properties of hollow carbon spheres modified by KOH were measured using a transmission/reflection coaxial method in the range of 2–18 GHz. The modification could result in a significant enhancement in the properties, including both the increment in absorbing intensity and bandwidth and the decrease in absorber thickness, which can be well explained by the high concentration of dangling bonds in per unit volume or per unit weight introduced during the modification. This dangling bond dominated mechanism could be used to instruct the design of absorbers with outstanding performances.
- Published
- 2016
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