溶胶-凝胶

Abstract(#br)A new polyethylene glycol fiber was developed for solid-phase microextraction (SPME) of styrene by electrodepositing porous Zn film on Ag wire substrate followed by coating with polyethylene glycol sol–gel (Ag/Zn/PEG sol–gel fiber). The scanning electron micrographs of fibers surface revealed a highly porous structure. The extraction property of the developed fiber-to-styrene residue from polystyrene packaged food was investigated by headspace solid-phase microextraction (HS-SPME) and analyzed with a gas chromatograph coupled with flame ionization detection (GC-FID).

Abstract(#br)The polydimethylsiloxane (PDMS) positive replica templated twice from the excellent light trapping surface of butterfly Trogonoptera brookiana wing scales was fabricated by a simple and promising route. The exact SiO 2 negative replica was fabricated by using a synthesis method combining a sol–gel process and subsequent selective etching. Afterwards, a vacuum-aided process was introduced to make PDMS gel fill into the SiO 2 negative replica, and the PDMS gel was solidified in an oven.

Molecular-level and particle-dispersed inorganic-organic hybrids, containing TiO as the inorganic component, have been prepared in order to study the effect of the introduced inorganic phase dimension on the structure and properties of the hybrids. The hybrids prepared from silanol-terminated polydimethylsiloxane (PDMS) and titanium ethoxide (Ti(OEt)) in the molar ratios of Ti(OEt)/PDMS=1, 2 and 4 were transparent with no visible particles, thus considered as molecular-level hybrids.

Molecular-level and particle-dispersed inorganic-organic hybrids, containing TiO2 as the inorganic component, have been prepared in order to study the effect of the introduced inorganic phase dimension on the structure and properties of the hybrids. The hybrids prepared from silanol-terminated polydimethylsiloxane (PDMS) and titanium ethoxide (Ti(OEt)4) in the molar ratios of Ti(OEt)4/PDMS=1, 2 and 4 were transparent with no visible particles, thus considered as molecular-level hybrids.

摘要\n物联网( IoT )因其多样的应用和市场潜力而日益普及。他们更多地被推到偏远的地点，开发人员寻找永远的电源。振动能量采集器( EH )能够缓解供电问题。采用氧化锌( ZnO )、聚二甲基硅氧烷( PDMS )和银( Ag )。但观察到薄膜晶粒尺寸有很大影响，即大晶粒薄膜优于小晶粒薄膜。本文分析了影响参数并进行了相关实证研究。采用扫描电子显微镜( SEM )、X射线衍射( XRD )、电学表征等方法进行了深入分析。观察到本工作实现了46.92µWpeak / 15.03µWrms功率。