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This papers reports on the study of two wafer level underfills (WLUF) for 3D stacked IC applications. WLUF either as a liquid (material A) or a dry-film (material B) were applied at wafer level before singulation and stacking in a die to die configuration using a thermo-compression bonding (TCB) process. The materials were applied on the top die on Cu/Sn microbumps 8.5μm thick to reach a film thickness...
This paper presents a novel intelligent data mining technique to estimate the optical properties of touch panel (TP) with different layers coating. The neural network (NN) model is developed to be the intelligent tool for the data analyzer. The new computational method based on well-trained NN's weights is used to analyze the influencing factors of TP film's chromatic aberration, i.e. L.a.b. values...
A highly sensitive and stable L-Lactate sensor based on the synergic action of multi-wall carbon nanotube (MWCNTs) and ZnO nanoparticles has been developed. The unique sandwich-like layer structure (PDDA/LOD/ZnO/MWCNTs) provides a favorable microenvironment to keep the bioactivity of LOD and prevent enzyme molecule leakage. Therefore, the proposed L-Lactate biosensor exhibited good analytical performances...
Protective coatings can replace traditional packaging methods, which are often voluminous and may spoil the otherwise excellent opportunity for miniaturized implantable medical MEMS. The bio-growth on a selection of biocompatible protective coatings (TiO2, DLC and Parylene) was investigated. The model system for evaluation was a diaphragm based acoustic resonator primary designed for fish identification...
Supercapacitors, a new energy storage element based on electrochemical double layer capacitance, store energy by ion adsorption, have recently attracted increasing interest with the sharp development of nanostructure materials. Supercapacitors store and release energy by nanoscopic charge separation at the interface between an electrode and an electrolyte, and the energy restored in it is inversely...
In this paper, a transmittance estimator of touch panel decoration film by using neural network is presented. In the evaporation process, the coating material and the related control parameters are all important influencing factors in obtaining the desired transmittance. The relationship among the transmittance and these factors are very complex and nonlinear. It's very hard to use the certain mathematical...
CIGS is the leading thin film PV material in terms of it capability to yield high efficiency solar cells. Co-evaporation method already yielded solar cells with close to 20% efficiency. Despite this success, however, commercialization of CIGS has not been aggressive. One reason for this is the fact that CIGS is a complex material. The other reason is the difficulty of scaling up this technology while...
Electroluminescence devices based on nanocrystalline Si/SiO2 multilayers were fabricated and the luminescence can be observed both from vertical and lateral direction. Moreover, P-doped nanocrystalline Si/SiO2 multilayers were prepared and the improved electro-luminescence characteristics were achieved.
In recent studies,1,2 switching characteristics of PVDF were investigated in the time domain by measuring charge and current responses to the stepwise application of electric fields in circuits with RC time constants smaller than 1 µS. Switching times for polarization reversal of 4 µS and larger were reported depending on the field strength and temperature.1,2 Similar shapes of current vs. time curves...
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