期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Colourimetric redox-polyaniline nanoindicator for in situ vesicular trafficking of intracellular transport 被引量:2
1
作者 Eun Bi Choi Jihye Choi +9 位作者 Seo Ryung Bae Hyun-Ouk Kim EunjiJang Byunghoon Kang Myeong-Hoon Kim Byeongyoon Kim Jin-Suck Suh Kwangyeol Lee Yong-Min Huh Seungjoo Haam 《Nano Research》 SCIE EI CAS CSCD 2015年第4期1169-1179,共11页
Vesicular pH modulates the function of many organelles and plays a pivotal role in cell metabolism processes such as proliferation and apoptosis. Here, we introduce a simple colorimetric redox-polyaniline nanoindicato... Vesicular pH modulates the function of many organelles and plays a pivotal role in cell metabolism processes such as proliferation and apoptosis. Here, we introduce a simple colorimetric redox-polyaniline nanoindicator, which can detect and quantify a broader biogenic pH range with superior sensitivity compared to pre-established trafficking agents employing one-dimensional turn-on of the fluorescence resonance-energy-transfer (FRET) signal. We fabricated polyaniline- based nanoprobes, which exhibited convertible transition states according to the proton levels, as an in situ indicator of vesicular transport pH. Silica-coated Fe304-MnO heterometal nanoparticles were synthesised and utilised as a metal oxidant to polymerise the aniline monomer. Finally, silica-coated polyaniline nanoparticles with adsorbed cyanine dye fluorophores Cy3 and Cy7 (FPSNIcyB and FPSNIcy7) were fabricated as proton-sensitive nanoindicators. Owing to the selective quenching induced by the local pH variations of vesicular transport, FPSNIcy3 and FPSNIcy7 demonstrated excellent intracellular trafficking and provided sensitive optical indication of minute proton levels. 展开更多
关键词 redox PH intraceUular compartments organic quencher conducting polymer nanoindicator
原文传递
Nanomechanical Properties of Molecular Deposition Film
2
作者 兰惠清 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第3期20-22,共3页
Two nanomechanical properties of the moleculor deposition ( MD ) film deposited on the Au substrate were studied. The first is its nanotribological property investigated by an atomic force microscope, which indicate... Two nanomechanical properties of the moleculor deposition ( MD ) film deposited on the Au substrate were studied. The first is its nanotribological property investigated by an atomic force microscope, which indicates that the deposition of the MD film could reduce the frictional force. The second is its nanoindent property studied by a nano-indenter. The results show that, after the MD film is deposited on the Au substrate , the elastic modulus, hardness and load decreased all, moreover, the elastic deformation increased and the plastic deformation decreased, which indicates that the MD film can improve the nanomechanical properties of the Au substrate. 展开更多
关键词 molecular deposition film atomic force miroscope nanomechanical properties nanoindent
下载PDF
等强混凝土界面过渡区的纳米压痕表征 被引量:14
3
作者 何智海 钱春香 +1 位作者 张异 赵飞 《建筑材料学报》 EI CAS CSCD 北大核心 2014年第6期1082-1086,共5页
通过背散射电子图像分析结合纳米压痕技术研究了等强混凝土界面过渡区性能.结果表明:矿物掺合料不同程度改善了等强混凝土界面过渡区性能,同时也增加了其非匀质性.双掺偏高岭土和石灰石粉可减小等强混凝土界面过渡区的厚度,明显降低其... 通过背散射电子图像分析结合纳米压痕技术研究了等强混凝土界面过渡区性能.结果表明:矿物掺合料不同程度改善了等强混凝土界面过渡区性能,同时也增加了其非匀质性.双掺偏高岭土和石灰石粉可减小等强混凝土界面过渡区的厚度,明显降低其弹性模量增长幅度,但提高了基体的弹性模量,而粉煤灰仅仅降低了等强混凝土界面过渡区弹性模量的增长幅度. 展开更多
关键词 等强混凝土 背散射电子图像分析 纳米压痕 界面过渡区 弹性模量
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部