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纳米氧化物薄膜紫外光照下气敏性能研究进展
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作者 张宏 林志东 艾华 《电子元件与材料》 CAS CSCD 北大核心 2008年第11期8-11,共4页
介绍了金属氧化物薄膜电极的制备方法与过程,阐述了紫外光作用于金属氧化物半导体的光照机理。基于实际应用和市场需求,就有关光照后金属氧化物薄膜的气敏性能的研究现状进行了探讨,并展望了其今后的应用与研究方向。
关键词 电子技术 紫外光 综述 纳米金属氧化物薄膜 气敏性能
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激光诱导击穿光谱技术在半导体材料检测方面的应用进展
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作者 武传奇 修俊山 《激光杂志》 CAS 北大核心 2024年第3期24-29,共6页
对于半导体材料的研究来说,其在材料内部的元素组成以及含量是影响其性能的一个重要因素,常规的检测方法虽然能够检测出样品中成分以及含量信息,但是在这过程中存在成本高、效率低、耗时长、过程较为繁琐等问题。在分析技术领域不断发... 对于半导体材料的研究来说,其在材料内部的元素组成以及含量是影响其性能的一个重要因素,常规的检测方法虽然能够检测出样品中成分以及含量信息,但是在这过程中存在成本高、效率低、耗时长、过程较为繁琐等问题。在分析技术领域不断发展的今天,急需寻找一种便携、新颖、与当今材料相匹配的检测技术。正是基于以上需求,激光诱导击穿光谱(LIBS)技术逐步走进了大众的视野,对LIBS技术进行了简要介绍,在此基础上着重介绍了利用LIBS技术来分析半导体材料表面的微分析研究与半导体材料金属氧化物纳米薄膜方面的研究进展,介绍了LIBS技术在这两方面检测的优势以及未来LIBS技术在这些方面的发展。 展开更多
关键词 激光诱导击穿光谱 半导体材料表面微分析 金属氧化物纳米薄膜 定性定量分析
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Nanosurface chemistry and dose govern the bioaccumulation and toxicity of carbon nanotubes, metal nanomaterials and quantum dots in vivo 被引量:1
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作者 赵峰 孟幻 +2 位作者 晏亮 汪冰 赵宇亮 《Science Bulletin》 SCIE EI CAS CSCD 2015年第1期3-20,共18页
The chemical and biological mechanisms of life processes mostly consist of multistep and programmed processes at nanoscale levels. Interestingly enough, cell, the basic functional unit and platform that maintains life... The chemical and biological mechanisms of life processes mostly consist of multistep and programmed processes at nanoscale levels. Interestingly enough, cell, the basic functional unit and platform that maintains life processes, is composed of various organelles fulfilling sophisticated functions through the precise control on the biomolecules (e.g., proteins, phospholipid, nucleic acid and ions) in a spatial dimension of nanoscale sizes. Thus, understanding of the activities of manufactured nanoscale materials including their interaction with biological sys- tems is of great significance in chemistry, materials sci- ence, life science, medicine, environmental science and toxicology. In this brief review, we summarized the recent advances in nanotoxicological chemistry through the dis- section of pivotal factors (primarily focusing on dose and nanosurface chemistry) in determining nanomaterial- induced biological/toxic responses with particular empha- sis on the nanomaterial bioaccumulation (and interaction organs or target organs) at intact animal level. Due to the volume of manufacture and material application, we deliberately discussed carbon nanotubes, metal/metal oxide nanomaterials and quantum dots, severing as representativematerial types to illustrate the impact of dose and nanosurface chemistry in these toxicological scenarios. Finally, we have also delineated the grand challenges in this field in a conceptual framework of nanotoxicological chemistry. It is noted that this review is a part of our persistent endeavor of building the systematic knowledge framework for toxicological properties of engineered nanomaterials. 展开更多
关键词 BIOACCUMULATION Toxicity Targetedorgans Carbon nanotubes - Metal nanomaterials Quantum dots
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Freestanding macroscopic metal-oxide nanotube films derived from carbon nanotube film templates 被引量:1
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作者 He Ma Yang Wei Jiangtao Wang Xiaoyang Lin WenyunWu Yang Wu Ling Zhang Peng Liu Jiaping Wang Qunqing Li Shoushan Fan Kaili Jiang 《Nano Research》 SCIE EI CAS CSCD 2015年第6期2024-2032,共9页
Aligned carbon nanotube films coated with amorphous carbon were developed into novel templates by atomic layer deposition. Freestanding macroscopic metal-oxide nanotube films were then successfully synthesized by usin... Aligned carbon nanotube films coated with amorphous carbon were developed into novel templates by atomic layer deposition. Freestanding macroscopic metal-oxide nanotube films were then successfully synthesized by using these templates. The reactive amorphous carbon layer greatly improved the nuclei density, which ensured the high quality of the films and allowed for precise control of the wall thickness of the nanotubes. Using template-synthesized alumina nanotube films, we demonstrate a humidity sensor with a high response speed, a transmission electron microscopy (TEM) grid, and a catalyst support. The cross- stacked assembly, ultrathin thickness, chemical inertness, and high thermal stability of the alumina nanotube films contributed to the excellent performance of these devices. In addition, it is expected that the metal-oxide nanotube films would have significant potential owing to their material richness, macroscopic appearance, flexibility, compatibility with the semiconducting technologies, and the feasibility of mass production. 展开更多
关键词 metal-oxide nanotube film atomic layer deposition carbon nanotube humidity sensor catalyst support
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