In this paper the results of the materials analysis of fluorocarbon (FC) films are presented. The properties of the fluorocarbon films are comparable to those of polytetrafluoroethylene (PTFE), better known under the trademarks such as teflon and fluon. The properties of PTFE are desirable for MEMS applications and enable new designs, new applications and new technological processing routes for...

A fluorocarbon and hydrocarbon organic solvent mixture is known as a temperature-induced phase-separation solution. When a mixed solution of tetradecafluorohexane as a fluorocarbon organic solvent and hexane as a hydrocarbon organic solvent (e.g., 71:29 volume ratio) was delivered in a capillary tube that was controlled at 10°C, the tube radial distribution phenomenon (TRDP) of the solvents was...

We report the surface-initiated ring-opening metathesis polymerization (SI-ROMP) of 5-(perfluoro-n-alkyl)norbornenes (NBFn) to grow partially fluorinated polymer films of tunable thicknesses ranging from tens of nanometers tomicrometers on gold substrates. The perfluoroalkyl chains range in length (n) from 4 to 10 carbons, representing 67-83%of the molecular weight of the repeat unit. The growt...

In this first part of a two-part study, experiments were performed to investigate condensation of FC-72 along parallel, square micro-channels with a hydraulic diameter of 1 mm and a length of 29.9 cm, which were formed in the top surface of a solid copper plate. The condensation was achieved by rejecting heat to a counter flow of water through channels brazed to the underside of the copper plat...

This second part of a two-part study concerns heat transfer characteristics for FC-72 condensing along parallel, square micro-channels with a hydraulic diameter of 1 mm, which were formed in the top surface of a solid copper plate. Heat from the condensing flow was rejected to a counter flow of water through channels brazed to the underside of the copper plate. The FC-72 condensation heat trans...

strate for the resist. After spin-coating, the polymer was gently softbaked at 40 °C to evaporate the solvent. The SU-8 was then structured by UV lithography (k= 365 nm) and post-exposure-baked at 40 °C to polymerize the exposed material. Three-dimensional microsystems were achieved by adding further SU-8 layers and repeating the resist processing steps. The microdevices were finally developed ...

Metal-organic frameworks comprise an important class of solid-state materials and have potential for many emerging applications such as energy storage, separation, catalysis and bio-medical. Here we report the adsorption behaviour of a series of fluorocarbon derivatives on a set of microporous and hierarchical mesoporous frameworks. The microporous frameworks show a saturation uptake capacity f...

Development of safe and effective delivery vectors is a critical challenge for the application of RNA interference (RNAi)-based biotechnologies. In this study we show the rational design of a series of novel dendritic peptide bolaamphiphile vectors that demonstrate high efficiency for the delivery of small interfering RNA (siRNA) while exhibiting low cytotoxicity and hemolytic activity. Systema...

Abstract Mixing hydrocarbon surfactants with fluorocarbon is still an important strategy to improve the economic benefits and performances of expand their range application. Herein, we prepared a novel kind hydrocarbon-fluorocarbon surfactant mixtures via mixing cationic surfactant, cetyltrimethylammonium bromide (CTAB), tri-block nonionic short-chain (F 9 EG 13 F ) in aqueous solution. The res...