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Nowadays tools based on Scanning Probe Methods (SPM) have become indispensable in a wide range of applications such as cell imaging and spectroscopy, profilometry, or surface patterning on a nanometric scale. Common to all SPM techniques is a typically slow working speed which is one of their main drawbacks. The SPM speed barrier can be improved by operating a number of probes in parallel mode. A key element when developing probe array devices is a convenient read-out system for measurements of the probe deflection. Such a read-out should be sufficiently sensitive, resistant to the working environment, and compatible with the operation of large number of probes working in parallel. In terms of fabrication, the geometrical uniformity i.e. the realisation of large numbers of identical probes, is a major concern but also the material choice compatible with high sensitivity, the detection scheme and the working environment is a challenging issue. Examples of promising applications using parallel SPM are dip-pen-nanolithography, data storage, and parallel imaging.

It is the main mechanism of enhancing oil recovery that polymer can increase the sweep efficiency. The methods for calculating polymer flooding sweep efficiency are laboratory experiment method, empirical formula method and seepage mechanical method. With the development of numerical simulation technology, in the exploitation of oil and gas field, numerical simulation technology has become a core technology. But now there is still not a polymer flooding sweep efficiency calculation method using streamline. This paper established compositional numerical simulation seepage equation group, and solved by streamline method. A new method is proposed for calculating polymer flooding sweep efficiency using streamline data field. After comparison with the electric simulation results and analytical formula results, it is proved that the method is accurate and reliable. Using the actual data of oilfield, polymer flooding sweep efficiency is analyzed, the main factors affecting polymer flooding sweep efficiency is obtained, and puts forward some suggestions on the injection of polymer.

Applying Fick's Law theory, a new formula for calculating diffusion and dispersion coefficient of surfactant diffusing to crude oil phase was deduced and validated through experiments. Heavy alkyl benzene sulfonate being as studying object, experiment that putting the same volume crude oil and surfactant solution into a column vessel with plug and then measuring the surfactant concentration at different time till the concentration is constant were carried out. And the effects of both surfactant concentration and polymer on diffusion and dispersion coefficient of surfactant were also studied; further, distribution coefficient of the surfactant to crude oil and water phase was predicted.

This paper investigated novel wireless RF pressure sensor fabricated with SU-8 polymer. To achieve highly simplified fabrication processes and designs for high-reliable operation, a passive wireless sensors were researched. SU-8 polymer-based micro pressure sensor was fabricated by micro-electro-mechenical system (MEMS) based batch process. The sensor consists of an inductor (L) interconnected with pressure-variable capacitor (C) to form a LC resonant circuit. Fabricated devices measure 4 × 3 mm² in size and houses 9 turns of Cu electro-plated 100 nH coil. In this system, RF signal was transmitted from external antenna to the fabricated LC resonator. By detecting this abrupt resonant frequency shift of the fabricated device, the pressure change of the device can be measured by wireless method.