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This study demonstrates a novel tunable quality factor, self-assembly inductor and packaging using an alternating magnetic flux. The merit of the design is to tilt the inductor from the lossy substrate and localize welding for assembly simultaneously using the magnetic film. A localized induction heating approach by an embedded heater was presented to prevent thermal problems during bonding. To demonstrate...
This paper reports on three real-world examples of remotely networked chemical and biological sensors. In the first example, two nodes of chemical sensors, separated by 300 km, are connected to a third node which is in a network operations center. In the second example, sensors in two separate remote locations are connected via wired and wireless Ethernet networks to independent command centers. In...
In order to facilitate public transport, the passenger to make the right decisions on the bus selection, in this we have proposed a transfer optimize model, starting from the transport network proposed the possible shortest time model, and realize it through genetic algorithm. The results show that the model and algorithm can find a satisfactory path.
Droplet interface bilayer (DIB) is formed on a microfabricated aperture between two addressable encapsulated droplets driven by coplanar EWOD electrodes. The DIBs, or artificial bilayer lipid membranes (BLMs), are fundamental to the in vitro studies of purified membrane channel proteins. A sandwich device is designed with three plates: the top and bottom plates contain coplanar EWOD electrodes for...
Micro optical gyroscope has advantages of integrated optoelectronic technology. Its ring resonator is fabricated by optical integrated technique. Polarization fluctuation induced noise is one of the dominant noise sources in resonator. State of polarization of the input light, polarization-maintaining quality of the coupler and the waveguide, and the temperature fluctuation are main parameters which...
In a typical set-up of light-addressable potentiometric sensor (LAPS), the individual sensing parts of the photosensitive semiconductor chip are addressed by modulated light beam such as laser beam. Although the laser can be executed with precision, the relative equipment is complex and expensive. In this work, a novel approach of utilizing Liquid Crystal Display (LCD) projector as a programmable...
This paper presents analysis of the acceleration sensitivity (output) in decoupled resonators and a proposal of a new method to suppress acceleration output by controlling frequency decoupling of coupled resonators for developing MEMS tuning fork gyroscope (TFG) with low acceleration sensitivity. We identified that unbalancing of two sense resonators in TFG caused by fabrication error converts external...
In this paper, we demonstrate a Nafion® filled porous silicon membrane with channels as proton exchange membrane (PEM) for micro direct methanol fuel cell (µDMFC). Nafion® filled nano porous silicon membranes with thickness of 60um have proton conductivities (0.02S/cm ∼ 0.03S/cm) comparable to the Nafion® membrane (0.05S/cm) which is the most commonly used commercial PEM material. The serpentine channels...
We present a new microfluidic system for transdermal interstitial fluid (ISF) extraction, collection, and volumetric measurement towards the application of noninvasive, continuous, and real-time glucose monitoring. This device consists of a Venturi Tube for vacuum generation, chambers for the introduction of ISF and normal saline solution, pneumatic valves for fluid control, and flow sensors for ISF...
This paper proposes a new proton exchange membrane (PEM) based on photochemically synthesized nano porous aryl epoxy resin (npAER) sulfonated by sulfanilic acid. The npAER PEM fabrication process involves solvent-induced nanoporous structure formation combined with photopolymerization for microstructure fabrication. The PEM was placed in the cathode of a half-fuel cell for testing in 0.5M H2SO4 at...
This paper introduces a novel fringe field capacitive sensor. To enhance the sensor signal, various sensor electrode design strategies and a surface modification method are introduced, discussed and compared. The sensors are characterized by both simulations and experiments. The experiment results demonstrate the sensor capability of water level measuring. In addition, fringing field sensor of the...
In this work, we propose a method of assembling carbon nanotubes (CNT) into a cluster by using dielectrophoresis. Multiwall carbon nanotubes (MWCNTs), which have been acid-treated, are dispersed into ethanol solution at a concentration of approximate 500 µg/mL. Then, the MWCNT solution is transported between a micromachined bottom electrode and a top probe electrode. A MWCNT cluster is formed using...
The nanohole-arrayed MnZn ferrite on the PAA/GaN/sapphire multilayer films was investigated for understanding the relation of the superparamagnetic with the photoluminescence. The nanohole MnZn ferrite film acts as a role of lowering superparamagnetic magnetization, and gives a way to excite the energy-exchanged yellow emission, especially at the presence of the sandwiched GaN layer. Without the GaN...
This work demonstrated the feasibility of a new particle trapping and separation approach, based on an EDEP-based microfluidic chip. Experimental observations and numerical simulations were facilitated to investigate the phenomena of EO or DEF depended on the driving frequencies at a given constant electric field. The results not only revealed the fluid cloud be generated a forward/backward EOF by...
The optical behavior of nanoporous alumina anodic oxide thin film (AAOF) on sapphires can be modulated with varying the nanopore diameters. The excited photoluminescence spectrum splits into two wavelengths of near blue and green peaks. This light modulation could relate to the superparamagnetic magnetization of the patterns upon in nanoscale. With increasing the nanopore size by reaming method, the...
Design and implementation of a micro scanning mirror for the application of WVGA resolution (848×480) pico-projector display is presently reported. A FEM model for damping coefficient analysis is built and shows a good agreement with experiment result. In addition, stress study for the torsional bar is performed to deal with fracture issue. With the consideration on damping coefficient and stress...
Opticaldielectrophoresis(ODEP)has been explored experimentally with success in manipulating microscale objects in the last 5 years. However, not much theoretical analyses have been performed to understand its operating principles in depth and also determine its limitations as a tool to manipulate micro- and nano-scale objects. In this paper, we present our work on establishing an equivalent electrical...
We present a formal method to abstractively describe our system “IP-library based MEMS device visualized simulation and verification tool” and the design process of a MEMS device. As this method providing a model representation and inference rule based on mathematical logic, it ensures the system run precisely and perfectly. Then we take the Micro-pump design process as an example to show our system...
This paper presents the design and simulation of a miniature ribbon microphone. The miniaturization of traditional aluminum ribbon microphone was realized by MEMS technology. An asymmetrical coil structure was designed in order to overcome electromotive force direction problem. Under the optimized design and fabrication, the responsivity of ribbon diaphragm is −54.8 dBV/Pa (@1 kHz) It is corresponding...
This paper compares four nonlinear springs for the micro power generator (MPG) application which convert low level vibration energy into electrical power. The magnet-spring system decides the generator's resonant frequency, and this work proves that the spring's nonlinearity level influences the width of the operating frequency. The four different planar springs have the same outer/inner dimensions...
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