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In roll-to-roll processing, the feeding speed of substrate ranging from several meters to several tens meters per minutes are required for some processes, such as roll-to-roll coating or gravure printing; reducing the speed will lead to other problems. On the other hand, some other processes need prolonged dwelling or holding time, such as thermal embossing. In the case of integrating different processes...
A four-pole elliptic function bandpass filter is designed using compact miniaturized microstrip interdigital hairpin resonator. Miniaturization hairpin resonator is realized by using a interdigital capacitor. In addition, the bandpass filter was implemented with using high permittivity ceramic substrate. These effects result in the reduction of its size. The full-wave simulator IE3D is used to design...
As Cu bump is widely adopted in microelectronic IC product packages for broader scope of applications throughout network communication and handheld device, it impacts on the interconnection joint integrity of package substrate to IC pad need to be well understood and managed which becomes even more critical as extreme Low-k (ELK) inter-metal dielectric material (IMD), with lower mechanical strength,...
There is a big push in the aerospace industry toward more electric aircraft (MEA)[1-2]. The progress is necessary to improve the overall power efficiency and reliability of the aircraft. Aircraft engine health monitoring (EHM) system is one the major effort from aircraft manufacturer toward MEA. This system employs arrays of strategically placed sensors that need to maintain high reliability and robustness...
In0.53Ga0.47As channel MOSFETs were fabricated on 300 mm Si substrate. The epitaxial In0.53Ga0.47As channel layer exhibits high Hall electron mobility comparable to those grown on lattice matched InP substrates. Excellent device characteristics (SS∼95 mV/dec., Ion/Ioff ∼105, DIBL ∼51 mV/V at Vds = 0.5V for Lg=150 nm device) with good uniformity across the wafer were demonstrated. The extracted high...
High junction temperature in the LEDs would lead to the reliability problems, such as low quantum efficiency, wavelength shifts, short lifetime, and even catastrophic failure. The effects of various parameters, such as thermal properties of substrates, thermal interface materials (TIM) and heat sinks on the thermal performance of the LED backlight module are investigated experimentally and numerically...
Gold nanoparticle arrays are fabricated for surface-enhanced Raman scattering (SERS) and the effect of experimental parameters such as annealing temperature and array thickness of nanoparticles on the SERS signals are investigated. The particle distribution and particle size are dense and uniform on the glass substrate when the 10nm gold film was annealed at 270 ºC and strong SERS signals for Rhodamine...
High-damage-threshold liquid crystal devices based on optically aligned coumarin alignment layers have been fabricated to generate beams with radial and azimuthal polarization states.
The high cost of fine spectroscopic grade CZT crystals with large gamma-ray stopping power is a limiting factor for widespread utilization in detector applications. Large volume, monolithic crystal parts suffer a lower yield because of high probability of defect opportunities. This work demonstrates a modular construction technique where volumetric scaling laws are overcome. Smaller crystal tiles...
Room temperature fabricated aluminum-doped zinc oxide (ZnO:Al) films were deposited by radio-frequency magnetron sputtering under pure Ar ambient. By investigating and controlling the sputtering parameters, such as relative position between target and substrate, and working pressure, high quality ZnO:Al films were obtained. Even without substrate heating during deposition or post annealing process,...
Significant differences have been observed in the efficiency of lasing action between KY0.8Yb0.2(WO4)2/KY(WO4)2 and KLu0.8Yb0.2(WO4)2/KLu(WO4)2 epitaxies. In KY0.8Yb0.2(WO4)2/KY(WO4)2, CW-laser operation could be obtained for pump wavelengths between 963 and 997 nm, using an astigmatically compensated resonator. However, when approaching the maximum absorption peak near 981 nm, thermal problems occurred...
Internally-matched 4H-SiC MESFET with 4times20 mm of the total gate width was demonstrated. The SiC MESFET structure consists of a channel layer with doping concentration of 2.3times1017 cm-3 and a cap layer with doping concentration of 1.5times1019 cm-3. A lightly p-doped buffer layer was employed between the substrate and the channel layer. Dry etching and high-temperature oxidation were employed...
This work is referring to the nMOSFET singer-finger, multi-finger structures under the Electro-Static Discharge (ESD) zapping, and to evaluate the current distribution situations. By using the TCAD and HSpice, because of the internal parasitic resistance differences in each one finger, which can cause non-uniform turned on. Meanwhile, with different interior parasitic capacitor on each nMOSFET type,...
This paper presents very small bandpass filters embedded in an organic laminate substrate for wireless system-in-package applications. Due to the lack of a fabrication process for high capacitance density capacitors on the applicable substrate, the proposed bandpass filter designs are based on a modified T prototype. By carefully taking parasitic and coupling effects into account in the filter synthesis...
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