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A low-cost, easy-to-fabricate paper-based capacitance sensor with inkjet printed interdigitated electrodes is presented. The sensor enables measurements of the dielectric properties of electrode free polymer films, a quick technique for assessing the insulating quality of polymer sheets. We demonstrate the suitability of the sensor for moisture and vapor measurements, permitting direct operation of...
The rapid development of three dimensional packaging makes it necessary to develop smaller and more reliable microbumps. In the electrodeposition process of bump cylinder, the filling quality is largely determined by the combination of additives. In this work, the effect and competitive adsorption between suppressor polyethylene glycol (PEG) and accelerator Bis-(3-sodiumsulfopropyl disulfide) (SPS)...
Manganese oxide films are electrodeposited on nickel foams from acetate solutions at 70°Cusing cyclic voltammetric (CV) and potentiostatic techniques (PS) in sequence. The effect of post heating temperature (PHT) in the range of 100–300°C on the morphologies and capacitive behaviors of the oxide electrodes are investigated. Raman spectra (RS) suggest that the structure of manganese oxides change with...
Gas sensor with high molecular selectivity is highly demanded in many fields of industry or disaster relief. Molecularly imprinted polymer (MIP) can recognize target gas by specific adsorption for template molecule. In this study, a novel chemiresistor, gas sensor which combined with MIP and conductive nanoparticles has been developed. The gases were distinguished based on molecularly structure by...
The extreme resolution of CO2 gas molecules sensing, i.e., detection of single molecule, is reported. The suspended bilayer graphene beam is exploited in order to isolate the sensing part of the device from the substrate noise. Using the electrostatic force, the central part of the suspended beam is pulled-down to bottom metal electrode, which leads to two slanted graphene beams in suspension with...
Water based Remazol Orange was utilized as the dye sensitizer for dye sensitized solar cell. The annealing temperature of TiO2 working electrode was set at 450 °C. The performance of the device was investigated between dye concentrations of 0.25 mM and 2.5 mM at three different immersion times (3, 12 and 24 hours). The adsorption peak of the dye sensitizer was evaluated using UV-Vis-Nir and the device...
The electronic and transport properties of carbon nanotube has been investigated in presence of ammonia gas molecule, using Density Functional Theory (DFT) based ab-initio approach. The model of CNT sensor has been build using zigzag (7, 0) CNT with a NH3 molecule adsorbed on its surface. The presence of NH3 molecule results in increase of CNT band gap. From the analysis of I-V curve, it is observed...
We report the sensing of carbon dioxide at the extreme resolution, I.e. the detection of an individual molecular adsorption event. We design a novel architecture of suspended graphene device, where comparable strain was introduced in graphene. With it, electrical field can be introduced to graphene surface by applying back-gate voltage to control the adsorption rates, while the collapsing of graphene...
This paper illustrates the technical advantages and extendibility of low Cu electrolyte for future generation damascene filling. Such improvement stems from many benefits low Cu concentration can provide: (1) stronger polarization, (2) stronger and more uniform adsorption of suppressors, (3) higher solubility of suppressor molecules for better wetting and defect performance, and (4) higher nucleation...
Supercapacitors are energy storage systems appreciated as high power short duration power sources. As any electrochemical devices, supercapacitors are subject to ageing processes. Ageing is characterized by supercapacitors electrical performances loss (capacitance fades and Equivalent Series Resistance increases). In this article, we focus on capacitance fade with time for different sets of floating...
Innovative diesel particulates (PM) collection and NOx reduction technology were developed using plasma combined system over the ears. As for PM control, the EHD-assisted electrostatic precipitator (EHD ESP) to collect low resistive diesel PM and the plasma ESP to collect and incinerate PM were developed. As for NOx reduction system, NOx concentration, followed by nitrogen plasma was developed without...
A composite particle electrode made of zirconium hydroxide and a conducting medium was studied in electro-adsorption to remove fluoride. The acetylene black (AB), carbon fiber (CF), graphite powder (GP), and expanded graphite (EG) were selected as conducting medium, and results showed that their percolation threshold were 20%, 40%, 35%, and 40%. If the weight percent of the 4 media was 10%, 30%, 35%,...
The montmorillonite was modified by AlCl3 and was used to remove the fluorine in the drinking water. The factors of influencing the fluorine removal rate, including the concentration of AlCl3 and the mass of the adsorbent, was studied in the research. The fluorine removal percentage was 97% by 10 g/L modified montmorillonite in the 10 mg/L fluorine solution at pH7, 25+2°C. The results suggest that...
Dye-sensitized solar cells (DSSCs) are being a potential technology for application in solar energy and photovoltaic processes. Its light harvesting and photocurrent generation are highly dependent on the nanostructured semiconductor film and the mode of dye adsorption. The N-doped TiO2 with mesoporous structure, which synthesized through one step templating sol gel method using amine group containing...
A study of the adsorption kinetics of 1-octanethiol and 1,8-octanedithiol has been carried out on gold electrode by cyclic voltammetry with different concentrations. Analysis of the kinetic data show that the adsorption kinetics of 1-octanethiol and 1,8-octanedithiol can be satisfactorily described by Diffusion controlled Langmuir(DCL) model, irrespective of concentration. The rate constants of 1-octanethiol...
This paper describes a glucose biosensor based on glucose oxidase (GOx) immobilized on porous ZnO/Au electrodes. The ZnO porous electrodes were fabricated by electrochemical deposition of zinc oxide on patterned Au electrodes using polystyrene (PS) spheres as templates. Uniform pore size and highly ordered ZnO pore arrangement were observed from SEM images. X-ray diffraction (XRD) patterns revealed...
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...
In recent years, through wafer electrical connections have become important roles, which will be used in developing high-speed, compact 3D microelectronic devices in next generation. Although the electroplating copper is a well-established process, completely void-free electroplating in through silicon holes (TSH) with a high aspect ratio remains a big challenge. Naturally, local current distribution...
The partial gas release during pumping is considered as a weakly nonequilibrium process and describes the methods of linear nonequilibrium thermodynamics. Streams are linear functions of thermodynamic forces. Force is the relationship of affinity reactions to the gassing temperature parts. As the flows accepted flows constituting the gas phase. The coefficients of proportionality determined from the...
In order to evaluate the effects of heavy metals discharged in the use of fossil energy sources on the environment, a novel method using a microcolumn packed with single-walled carbon nanotubes (SWNTs) as a new adsorption material was developed for the preconcentration of trace Pb in environmental water sample prior to its monitoring by inductively coupled plasma mass spectrometry (ICP-MS). The adsorption...
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