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The heat transport capacity of the conventional heat pipes over extended distances is limited by the maximum condensate flow that their wicks can sustain. This paper introduces and analyzes a new planar heat pipe technology, which can transport ultrahigh heat loads (>1 kW) over extended distances (>1 m). The concept of an electrowetting heat pipe (EHP) is based on replacing the adiabatic wick...
Substrate removed Mach-Zehnder electro-optic modulators with InGaAlAs/InAlAs MQW cores are reported. Devices have 0.36 V-cm drive voltage length product and 2 pF/cm capacitance making them suitable for very low voltage and wide bandwidth operation.
In this paper, we propose a novel unipolar CMOS device with embedded oxide. Good inverter and logic gate output waveforms and behaviors are obtained. Utilizing the punch through effect, the Non-Classical Unipolar CMOS is demonstrated to enhance the tPLH so that the average delay time can be improved 23% when compared with the conventional CMOS. Due to all NMOS structures are only exploited and the...
In recent years, research and development work have been done on surgical robots and navigation systems. Although these systems have potential to realize minimally invasive and precise surgery, it is considerably difficult to control these robots accurately because organ sometimes shows unanticipated behavior during operation. Therefore, the robot control system which can respond to the various change...
This paper presets the assembly of a nanowire probe pH sensor and evaluation inside acid and alkali. An AFM cantilever was used for electrodes of the device and etched by FIB. Two carbon nanotubes (CNT) were assembled to the separated electrodes of AFM cantilever. A tungsten probe is etched by focused ion beam (FIB) into 300 nm in diameter and 25 in length. Then the probe is coated by parylene and...
Rigorous new regulations in coal-fired pollutants emissions by power plant have caused new demands for electrostatic precipitator (ESP) technology. The study was inspired by the requirement to use cheaper flexible polypropylene fiber and Terylene fabrics as substitutes for typical collection electrodes to save energy and structural materials, and to solve the adverse impacts caused by wet flue gas...
The application of process computed tomography to microchannels is considered in this paper. Using the process computed tomography system in microchannel, a particle distribution image can be obtained in a multiphase flow. Based on the reconstructed image, it is easy to estimate the particle diffusion behaviors in a fluid flow. A microchannel system is designed for process computed tomography. The...
In order to improve the ignition reliability of small scale liquid rocket, a multipoint electric ignition method has been proposed. A pulse electric ignition device with the sequence circuit is designed which is composed of ignition sequence circuit model and boosting circuit model. The operational principle of the pulse ignition device has been analyzed.
The electrochemical deposition behaviors of Pd-Ni bimetal on different matrix materials were studied by means of the preparation of Pd-Ni/GC, Pd-Ni/foam-Ni and Pd-Ni/Ti electrodes. The effect of the matrix materials to the electrocatalytic activity of electrodes was investigated. CV results reveal that hydrogen absorbability of Pd-Ni/Ti electrode was obviously higher than the Pd-Ni/GC and Pd-Ni/foam-Ni...
The system focused on the detection of integrated multi-parameter in the fermentation industry. We can achieve parameters of glucose, lactic acid and glutamic acid just by one sample and one sensor. The ancillary instrumentation based on m16(AVR) revealed the values of multi-parameter detection, simple and accurate, with some useful functions such as storage, query, upload etc.
The efficiency of electrokinetic remediation of Cu contaminated groundwater was researched by means of experiments for the complicated remediation of groundwater contaminated by typical heavy metal in this paper, and migration and variation characteristics of Cu was analyzed too. The experimental results indicated that the pH value varied obviously during the electrokinetic remediation because of...
The efficiency of electrokinetic remediation of zinc contaminated soils and the influence of complex EDTA were researched by means of experiment for the complicated remediation of soil contaminated by typical heavy metal in this paper, and migration and variation characteristics of zinc were analyzed too. The experimental results indicated that the heavy metal pollutant could be enriched and removed...
Multiple-sensor Synchronous data collection system was developed on the base of RS485 distributed single-chip and the sensors of resistance spot welding current, voltage, electrode displacement and electrode pressure met spot welding process real time monitoring. The results show that the incomplete fusion defects of aluminum alloy pulse spot weld can be judged by the electrode displacement range...
The performance of electro coagulation, with thirty-one aluminum electrodes coated with a layer of graphite, in the treatment of metal ions (Cu2+, Zn2+ and Cr6+) containing wastewater, had been investigated. The basic principle of electrolysis and several working parameters, such as pH, operating time and connection mode were deeply analyzed. The results show that monopolar connection is the most...
Removal of cyanides by the pulsed discharge plasma using a needle-plate reactor has been investigated. Effects of some factors were studied, including treatment modes, pH values, treatment time, and bubbling gases. The results of experiment indicate that the removal efficiency of cyanide increased greatly when air or nitrogen was injected into the reaction region during the discharge process, and...
Nano gold-L-alanine modified electrode was prepared and its application to the electrochemical determinatino of formaldehyde in alkaline medium was studied by cyclic voltammetry. The experimental parameters were optimized, and a voltammetric method for determining formaldehyde was developed. The characteristics of CVs showed the electrocatalytic oxidation peak current of formaldehyde is proportional...
Polyaniline/graphene nanocomposite (PANI/G) was synthesized by an in situ polymerization procedure. The microstructure of PANI/G was characterized to be a mixture of PANI nanowires and graphene sheets by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Energy Dispersive X-Ray Fluoresence Spectrometer (EDX). PANI/G was used to modify glassy carbon electrodes to detect...
In this paper we will present a touch sensitive compact design that is used for the actuation of myo electric arm. This system was developed as an alternative to today's commonly used electromechanical prosthetic actuation systems. With this system the amputee has to just touch the switch and individual can do couple of activities. Also this switching system is capable of closing and opening of grip...
Solar energy harvesting and storage are important topics of renewable energy. Current solid-state photovoltaic cells and conventional photoelectrochemical cells cannot harvest and directly store the converted energy within one single structure. We report on a photocapacitor that can convert and store solar energy based on a bio-inspired mechanism. The photocapacitor converts the solar energy through...
A low voltage electrostatically actuated 90° turning flap is modeled and fabricated. The application is a new kind reflective, low-power, MEMS-based display with high contrast and reflectance. The system consists of a poly-silicon flap fabricated onto a silicon substrate with a transparent counter electrode on glass and a device layer of a silicon-on-insulator (SOI) wafer as spacer in between them...
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