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Multi quantum well (MQW) heterostructures in the GaP-based dilute nitride Ga(NAsP) were pseudomorphically grown on exact oriented (001) Silicon substrates without the formation of misfit dislocations. Efficient room temperature photoluminescence has been observed.
Based on fundamental hydrodynamic equations, according to principle of flux conservation in control volume, various field variables of every node in the whole flow field of circular thrust aerostatic bearing are resolved. Distribution of these discrete variables can substitute for solutions of the partial differential equations which describe physical phenomena of the flow in the bearing. By this...
Bucky gel actuator is a novel electro-active polymer (EAP), which is a low-voltage driven dry soft actuator. In addition, the bucky gel device generates electromotive force when bending, and then it also can be used as a sensor. Its device has a bimorph structure with polymer-supported bucky gel electrodes and a polymer-supported ionic gel electrolyte. It can be fabricated by layer-by-layer casting,...
The paper presented the IEC 61499 based run-to-run controller for chemical mechanical planarization process. Experiments show the needs of adjust the removal rate based on the actual data captured from manufacturing line rather than default values to calculate removal rate for every lot and use removal rate to calculate polish time for the next lot which would be polished next in the polish tool....
Fabricating nanoelectrodes with a few nanometer inter-electrode gap laterally is a challenge with existing technologies. In this work, we present a simple method to fabricate electrode pairs with a sub-20 nm inter-electrode gaps using Focused Ion Beam (FIB) etching technology. Unlike previously reported methods, no internal or external modification in the Focused Ion Beam system is needed in this...
Mesoporus silica dielectrics, which revealed low refractive index (n~1.26), were introduced together with Si3N4 layers to be double-layer-based graded-refractive-index anti- reflectors for silicon solar-cells. Enhanced solar-light transmission increased conversion efficiency of Si solar panels by 4%. The degradation in photovoltaic efficiency of solar panels that were covered with Si3N4/MS anti-reflectors...
High resolution Laplace deep level transient spectroscopy (LDLTS) at temperatures up to 450 K has been applied to thin polycrystalline semiconducting diamond films deposited on n-type silicon. Such structures form p-n diodes and can be characterised by capacitance DLTS. The boron doped diamond films were grown by hot filament chemical vapour deposition and the diamond film thickness was 3-4 microns...
The semiconductor-passivating layer interfaces, as well as their dielectric properties, play important and very often dominant roles in determining HgCdTe device performance. In this work, photoconductors were fabricated on p-type mid-wave infrared Hg1-xCdxTe material using molecular beam epitaxy (MBE) grown CdTe film as the passivation layer. In order to emphasize the importance of the CdTe passivating...
The importance of the deformation and physics based deformation methods are continuously increasing in computer graphics area. However, the user interaction and reality using them is still insufficient for the various applications such as modeling process and game industry. In this paper, we propose physics based deformation technology under AR (augmented reality) environments to improve the effectiveness...
Biopolymers have received much attention lately for use in electronic applications. Salmon DNA complexed with cetyltrimethyl ammonium chloride (DNA-CTMA) produces a material soluble in organic solvents, enhancing the ease of processing. DNA-CTMA has shown promise as an electron blocking layer in organic light emitting diodes (OLEDs) and potential as a gate insulating material in field effect transistors...
Photopatterning with 266 nm UV light was accomplished on spin-coated DNA thin films using two different techniques. Lithographic masks were used to create 10-100 micron-sized arrays of enhanced hydrophilicity. Two such masks were used: (1) Polka Dot Filter having opaque squares and a transparent grid and (2) A metal wire-mesh having transparent squares and opaque grid. UV light selectively photodissociates...
The thickness of each layer of the OLED (Organic Light Emitting Diode) with the multi-layer structure of ITO/NPB/Alq3/LiF/Al was studied by N&K Analyzer before and after aging experiments. Through comparing the film thickness when kept in ambient atmosphere with different exposure duration and failed samples, main thickness changes occur in the Alq3 and LiF layers while the ITO and NPB layer had...
New interconnect materials are always necessary as a result of evolving packaging technologies and increasing performance and environmental demands on electronic systems. Polymer-based conductive-adhesive materials have become widely used in many electronic packaging interconnect applications. Among all the conductive-adhesive materials, the anisotropic conductive adhesives (ACA) (or anisotropic conductive...
The interfacial reaction between Sn-3.8Ag-0.7Cu solder and FeNi substrate was much slower, resulting in a thin FeSn2 IMC layer at the interface. Interfacial bond between FeNi and Sn-3.8Ag-0.7Cu solder ball was examined by ball shear tests and the shear test results were compared to those on Cu and deposited Ni layers. Ball shear test showed that the Sn-Ag-Cu/FeNi-Cu interface had a comparable strength...
Due to their unique electrical and mechanical properties carbon nanotubes (CNTs) are the most studied material in the nanotechnology. These material properties involve interesting advantages for sensors, such as a short reaction time, a higher sensitivity and novel sensing principles. In this paper we evaluate the potential of CNTs for different sensor applications. Although nanotechnology is still...
A nonlinear optical (NLO) active alkoxysilane chromophore (SGDR1) was successfully synthesized. A fluorinated polyimide/SGDR1 composite was prepared to improve the poor temporal stability of nonlinearity at elevated temperature for the reported poled sol-gel film. The poled composite film was characterized by FTIR, DSC, TGA and UV-Vis. Results show that the composite displays good hydrophobic properties,...
ldquoSystem-in-packagerdquo(SiP) and ldquosystem-on-packagerdquo (SoP) are different but similar in concepts. SiP and SoP definition were found in many open sources. SoP promises much more technologies and functions over SiP, leads to too many and more complicated research areas, and long time to develop, which could lost patience and interest from industry. Module-in-package(MiP) was proposed as...
Simple sandwich-type device structures have been fabricated by deposition of metal contacts on opposing faces of polycrystalline diamond films synthesised using chemical vapour deposition. The electrical characteristics of these devices have been investigated during exposure to a 6 megavolt photon beam from a clinical linear accelerator. The photocurrent appears to vary as the dose rate to the power...
Novel varistor materials based on ALD surface modified metal particles embedded in a polymeric binder were found to display exceptional non-ohmic electrical properties. Sub- nanosecond transient response times with negligible overshoot and low capacitance, leakage current, and insertion loss were repeatedly observed. These properties enable these novel devices capable of suppressing fast rise-time...
The article describes a simple method to prepare TEM sample put on Cu grid without carbon support film. So that we could remove the background of carbon film while we do componential analysis.
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