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Localized deposition of pure platinum nanostructures was achieved using a combination of focused electron beam induced processing (FEBID) of an inorganic platinum precursor and low temperature annealing in water vapour. This technique enables fabrication of Pt nanostructures with high spatial resolution and purity, for applications in nanoelectronics, sensing devices and catalysis.
In this paper, we report on a dielectric study of a series of composite systems based upon a polystyrene matrix (έm ∼2.7) containing dispersed particles of lead zirconate titanate (PZT) and barium titanate (BaTiO3) (in both cases, έp ∼1000). These components were chosen to give a high dielectric contrast within the system and, because polystyrene is readily etched using permanganic reagents, the size...
In order to elaborate a very strong hydrophilic phosphate masses coating on titanium, an electrodeposition method was performed after polishing, etching and ultrasonication of samples. Electrodeposition took place in three electrodes cell at different working parameters (time and temperature). After electrodeposition all samples were calcinated for 1 hour at 4000C, in order to increase the crystalinitty...
the paper reported about new practical system for 3D three dimensional (3D) nano-manipulation. The system consists of advanced high precision nano-manipulators based on piezoelectric resonance motors and end-effectors. The end-effector is the bimetallic composite nanotweezers based on Ti2NiCu alloy with shape memory effect. This nano-tweezer is easy in use micron-size nano-tool controlled by semiconductor...
We investigated the morphological and electrochemical properties of an explanted laser-machined 32 channel electrocorticogram (ECoG) electrode array made of platinum-iridium and silicone rubber. It was connected to a wireless brain-computer interface (BCI) and implanted in a sheep for more than 15 months. Recordings and stimulations of cortical activity were conducted over the whole period on a regularly...
With the increasing using temperature, the magnetic performance of high temperature stable Sm2Co17 type permanent magnet will be decreased. In order to explore the effect of the high temperature on microstructure of the alloy, the differential thermal analysis (DTA) was made and three distinct phase transformation temperature 254 °C, 342 °C and 540 °C were obtained. Then X-ray diffraction (XRD), scanning...
Sn-3.5Ag nanosolder in tiny sizes can provide a practical way to solve the high soldering temperature problem of lead-free solder alloy in fine pitch interconnectivity owing to the unique nanosize effect and meantime stand a higher working temperature just as the bulk material after welding. In this paper, a simple approach to synthesis Sn-3.5Ag nanoparticles by chemical reduction at room temperature...
It is known that carbon-related materials are suitable for field emission sources owing to its chemical and physical high stability and that some of them show superior field emission features; a very low threshold applied field and a high current density. In the case of emitter sources with an atomically sharp tip with a high aspect ratio such as carbon nanotubes, we have usually tried to explain...
This paper describes an imaging-based approach for the characterization of the pharmaceutical product structures obtained by freeze-drying. The analysis of the dried cake structure and particularly the estimation of its porosity and permeability, is fundamental for the selection of the optimal process conditions and also for the product quality control. Furthermore, the product structure has a dramatic...
One of the coating materials that is used to reduced electron charging effect during Scanning Electron Microscope (SEM) imaging is Platinum (Pt). Removing Pt coating for parts requiring further electrical testing or deprocessing has been a challenge in failure analysis. This paper discusses the established methodology in removing Pt coating using the ICP-RIE sputter etching technique.
With the increasing using temperature, the magnetic performance of high temperature stable Sm2Co17 type permanent magnet will be decreased. In order to explore the effect of the high temperature on microstructure of the alloy, the differential thermal analysis (DTA) was made and three distinct phase transformation temperature 254 °C, 342 °C and 540 °C were obtained. Then X-ray diffraction (XRD), scanning...
Sn-3.5Ag nanosolder in tiny sizes can provide a practical way to solve the high soldering temperature problem of lead-free solder alloy in fine pitch interconnectivity owing to the unique nanosize effect and meantime stand a higher working temperature just as the bulk material after welding. In this paper, a simple approach to synthesis Sn-3.5Ag nanoparticles by chemical reduction at room temperature...
Characterization method for active layers for microelectrodes of electrochemical and gas sensors using scanning electron microscopy (SEM) is presented. In order to achieve maximum sensitivity and selectivity of the sensor, it is necessary to obtain precise knowledge of electrode's surface. Characterization was made using FEI Magellan SEM equipped with TLD secondary electron (SE) and CBS back-scattered...
In this study, we developed single-pitch hybrid bonding technology for high density 3D integration. To realize the single-pitch, smaller than 10-µm pitch, hybrid bonding, 8 µm-pitch Cu/Sn microbumps and nonconductive film (NCF) were used. The planar structure to simultaneously bond was formed by chemical mechanical polishing (CMP). After the planarization, the Cu/Sn bumps and NCF were simultaneously...
It is an urgent need to develop low-cost, scalable-fabricating materials, technologies and equipments that are capable to separate oil-water mixtures efficiently. Traditional separation technologies are discontinuous and expensive. Large-scale separation devices are difficult to be prepared. Here we report stainless steel wire mesh coated with Superhydrophobic and superoleophilic coating, which can...
The aims of the paper is to furnish a new methodology to (i) define chemical and physical parameters used as references to distinguish between a healthy human bone tissue and the one affected by primary coxarthrosis, and (ii) to enrich the base of knowledge used in the biomaterials field. The methodology pointed out is based on measurement techniques used for civil engineering materials. It is possible...
A novel e-beam free, top-down spacer etch process was used to fabricate sub-hundred nanometer Ge2Sb2Te5 phase change nanowires. Naowires with a cross-section dimension of 50 nm × 100 nm (width × height) were obtained and phase change functionality demonstrated.
Tensile specimens with a Cu/IMC/solder/IMC/Cu structure were prepared, and were treated by 0h, 72h, 168h, 288h, 500h, 1000h isothermal aging processing at 150°C. Quasi-static tensile tests were conducted on the micro-tester Instron5948, Fracture analysis of fractured specimens was conducted by optical microscopy and scanning electron microscopy. Two fracture modes were found, and the fracturing surface...
α-Sn seed was preset on the surface of both the high purity tin (99.999%) and Sn-0.7%Cu ingots, then the samples were kept at −40 V for different times, the surface morphology of the samples was observed to study the process of the β/α transformation. SEM was used to evaluate the degree of the phase transition, while the XRD was applied to identify the product of the transformation The results showed...
Porous carbon material with acid alkaline, corrosion-resistant, high temperature, thermal conductivity, electrical conductivity and a series of advantages properties, these carbon materials have been widely used in water purification, gas separation, chromatographic analysis, adsorption, catalyst carrier, supercapacitors as well as areas such as fuel cells.Template method provides a new technology...
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