通过电子束蒸发制备了二氧化钛纳米薄膜和纳米柱材料,经过退火处理后,对2种结构的材料进行了针对乙醇的气敏测试。通过X-射线衍射仪(X-Ray Diffraction,XRD)及扫描电子显微镜(Scanning Electron Microscope,SEM)对材料进行表征。SEM结...通过电子束蒸发制备了二氧化钛纳米薄膜和纳米柱材料,经过退火处理后,对2种结构的材料进行了针对乙醇的气敏测试。通过X-射线衍射仪(X-Ray Diffraction,XRD)及扫描电子显微镜(Scanning Electron Microscope,SEM)对材料进行表征。SEM结果显示,二氧化钛纳米薄膜表面呈现出平整致密的结构,而纳米柱材料表面呈现出疏松多孔的结构。XRD结果表明,经退火处理后2种材料均为单晶结构,呈现为锐钛矿相。二氧化钛纳米薄膜工作温度在200℃以上时效果较好,纳米柱材料需要在300℃左右才能具有最佳响应。纳米柱在最佳工作温度下对于体积分数为0.03%的乙醇气体响应度高达36.1,相比于纳米薄膜材料性能提升约200%。展开更多
The post structure aligned carbon nanotube(ACNT) film was prepared by CVD. it was a ultra-hydrophobic film with a higher contact angle(166°) and lower sliding angle(less than 3°). The post structure ACNT fil...The post structure aligned carbon nanotube(ACNT) film was prepared by CVD. it was a ultra-hydrophobic film with a higher contact angle(166°) and lower sliding angle(less than 3°). The post structure ACNT film showed discrete pillar composed of carbon nanotubes, these pillar formed microstructure in the film, which affected both the contact angle and the sliding angle.展开更多
Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have be...Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have been extensively investigated due to their importance for industrial applications. In the present study, we describe a rather simple method for synthesizing separated alignments of polymer nanopole films, which has super-hydrophobic property with water a contact angle as high as 152.0°. Nanostructures that induce the large fraction of air on the surface cause this unique property.展开更多
文摘通过电子束蒸发制备了二氧化钛纳米薄膜和纳米柱材料,经过退火处理后,对2种结构的材料进行了针对乙醇的气敏测试。通过X-射线衍射仪(X-Ray Diffraction,XRD)及扫描电子显微镜(Scanning Electron Microscope,SEM)对材料进行表征。SEM结果显示,二氧化钛纳米薄膜表面呈现出平整致密的结构,而纳米柱材料表面呈现出疏松多孔的结构。XRD结果表明,经退火处理后2种材料均为单晶结构,呈现为锐钛矿相。二氧化钛纳米薄膜工作温度在200℃以上时效果较好,纳米柱材料需要在300℃左右才能具有最佳响应。纳米柱在最佳工作温度下对于体积分数为0.03%的乙醇气体响应度高达36.1,相比于纳米薄膜材料性能提升约200%。
文摘The post structure aligned carbon nanotube(ACNT) film was prepared by CVD. it was a ultra-hydrophobic film with a higher contact angle(166°) and lower sliding angle(less than 3°). The post structure ACNT film showed discrete pillar composed of carbon nanotubes, these pillar formed microstructure in the film, which affected both the contact angle and the sliding angle.
文摘Wettability is a very important property governed by both the chemical composition and the geometrical structure of solid surfaces. Super-hydrophobic surface[with water contact angle(CA) larger than 150°] have been extensively investigated due to their importance for industrial applications. In the present study, we describe a rather simple method for synthesizing separated alignments of polymer nanopole films, which has super-hydrophobic property with water a contact angle as high as 152.0°. Nanostructures that induce the large fraction of air on the surface cause this unique property.
