Anti-condensation is important in various fields, e.g., transportation, power transmission, internal drying of precision instruments. Vapor sink an manner to suppress the happening water vapor condensation, and shows potentials some special scenarios. However, mechanism anti-condensation by not well understood up until now. In this article, effect substrate temperature on dry zone generated were systematically studied with experiments theoretical analysis. First, hygroscopic solutions local...

This study investigates the crystallization and self-assembly phenomena of polyacrylamide (PAM) solutions during evaporation. While traditional thin-film fabrication methods such as spin coating drop casting are commonly used, this utilizes a simple evaporation approach to gain insights into processes PAM solutions. We examined with varying concentrations (1%, 2%, 5%) observed resulting crystalline structures morphological changes Spectroscopic absorbance measurements were employed analyze...

Luftkissen: Rastermikroskopie mit einem konfokalen Laser ergibt 3D-Bilder von Luft an unzugänglichen superhydrophoben Grenzflächen (helles Gebiet im Bild). Zwei hydrophobe Zustände – der Wenzel- und Cassie-Zustand wurden auf diese Weise quantitativ erfasst. Das 10 μm dicke Luftkissen senkt die Wasseradhäsion dermaßen, dass Wassertröpfchen Oberfläche abperlen dort befindliche Verunreinigungen forttragen (Selbstreinigungseffekt).

Abstract The surface morphologies and compositions of the asymmetric films polystyrene‐ b ‐poly(ethylene‐ co ‐butylene)‐ ‐polystyrene (SEBS) prepared by in situ ex oxidization with KMnO 4 aqueous solution /H 2 SO mixed were investigated using scanning electron microscope, atomic force microscope (AFM), X‐ray photoelectron spectroscopy (XPS) attenuated total reflectance infrared (ATR‐FTIR). effect reagents on morphological changes influence preparation methods discussed. Different from...

This study investigated crystallization and self-assembly phenomena in polyacrylamide (PAM) solutions during evaporation. As the solvent gradually evaporated, microscopic crystals began to form solution. The results show that concentration gradients as solution evaporates, leading varied crystalline morphologies. From edge center of PAM solution, grass-like structures with intricate vein-like patterns irregular morphologies were formed. gradient played a crucial role this process....

For the thermal load of a heavy vehicle is too high in plateau environment, based on Hiroyasu spray model and predictive combustion model, turbocharged diesel engine with environmental adaptive ability was established. The experimental results 3700m revealed that simulation result relative errors were less than 5%. research chamber temperature field made. This method provides fundamental basis for further design chamber.

The cooling water of the large power vehicular diesel engine often got high or low and could not work in adaptive thermal conditions altitude environment. In order to solve problem, analyzed refrigeration requirement on plateau section, suggested amelioration program from installing fluid operated pump-mot fan speed regulating device. Base coupling simulation model working process coolant system, took 90°C temperature as optimally target value, change canon form ambient condition,...

Using simulation software, numerical and plateau tests are combined to create the diesel engine process model. External characteristics of engine, experiments vehicle verify The maximum deviation results is less 10%. model accurate, which provides a way study environmental adaptation engines.

Condensation, frosting and icing are natural phenomena, have been enduring challenges for human society modern engineering. These phenomena pose a range of issues, from hazardous icy road surfaces, damage to electronic devices due condensation, frost accumulation on power lines aircraft. Dipropylene glycol (DG) is non-toxic, non-corrosive, biologically safe substance with excellent hygroscopicity, capable inhibiting condensation ice formation through the vapor sink strategy. However, there...

Abstract Based on finite element numerical simulation method, Fluent software was used to simulate the centrifugal atomization process of multi-solid wastes molten slag melted by blast furnace slag, fly ash and waste incineration ash. The feasibility model in simulating verified comparing experimental results with calculated results. influence rotating speed, nozzle angle inlet velocity compressed air injected particle distribution were studied. Results showed that speed turntable should not...

Power electronic technology plays an important role in all walks of life. Especially the combination weak current and strong can change dynamic phase structure promote stable operation whole circuit system. It be seen that is directly related to working quality efficiency However, process designing, installing debugging circuit, various system failures may occur, which affect normal operation. Therefore, it necessary test repeatedly gradually determine cause fault solve it.

摘要 采用多元芯片方法获得了一系列不同离子注入剂量的GaAsAlGaAs非对称耦合量子阱单元,通过光致荧光谱测量,研究了单纯的离子注入导致的界面混合效应.荧光光谱行为与有效质量理论计算研究表明,Al原子在异质结界面的扩散在离子注入过程中已基本完成,而热退火作用主要是去除无辐射复合中心. 关键词: 量子阱 / 离子注入 光致荧光谱 界面混合 Abstract Keywords: 作者及机构信息 陈贵宾2, 陆卫1, 缪中林2, 李志锋1, 蔡炜颖1, 沈学础1, 陈昌明3, 朱德彰3, 胡钧3, 李明乾3 (1)中国科学院上海技术物理研究所红外物理国家重点实验室,上海200083; (2)中国科学院上海技术物理研究所红外物理国家重点实验室,上海200083;中国科学院上海原子核研究所核分析技术开放实验室,上海201800; (3)中国科学院上海原子核研究所核分析技术开放实验室,上海201800 基金项目: 国家自然科学基金 (批准号 :10 0 740 6 8);;国家重点基础研究项目 :G19980 14 4)资助的课题~~ Authors and contacts Chen...