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We report on the operation of electrically pumped 1.3µm InAs QD laser directly grown on a Si substrate using InAlAs/GaAs dislocation filter layers with a threshold current density of 194A/cm2 and output power of ~80mW.
Grassland ecosystem is one of the most important terrestrial ecosystems in China. Grassland aboveground biomass (AGB) is not only the material base for maintaining grassland ecosystem, but also the most direct indicator to reflect grassland status. AGB determines the herbivore carrying capacity in grassland ecosystem. Therefore, it is important significance to retrieve AGB to study the regional carbon...
Thin ITO-based PET conductive membranes are the major sensing structure in resistive touch panels for network phones or other applications. However, device failures or malfunctions such as early touch and disagreement between force-applied and touched locations have been reported. By examining the surface profiles, it was found that these membranes have considerable initial out of plane deformation...
The widely developed and used HVDC transmission systems will cause DC bias phenomenon occurred in some electromagnetic facilities of power grids with the results of several negative effects on the secure and reliable operation, including vibrations and noises. However, there has been few studies regarding the influence DC bias has on shunt reactors. To fully explore the vibration characteristic of...
Wepresent a new developed rank based method, namely the Wideband Nested Equivalent Source Approximation (WNESA) method for multiscale problems. The low rank approximation of WNESA is constructed after introducing equivalent vector source distributions on properly defined equivalence surfaces enclosing the coupling groups. The equivalent vector sources are determined by an inverse-source process that...
Optimization of halo profile for advanced MOSFET device is important to control device short channel effect as well as device leakage. Multiple halo implants, such as mixture of Indium and boron to tailor the halo formation, have been used widely for n-FET devices. Amid its AMU and solubility, Gallium has a potential for better halo activation than Indium and reduced lateral straggling than boron...
Conventional phase change memory (PCM) stores information in amorphous/crystalline states that can be read out as HRS/LRS. In this work we report a radically different mode of storage that can concurrently and independently work with the conventional storage mode. By stressing the memory cell with current we can shift the threshold for RESET switching, and the resulting R-I curve can be used to store...
The SOFR model is modified for SOCs in consumer electronics applications such as game consoles for advanced logic technology nodes (∼2X nm). Using a representative voltage/temperature dataset from XBOX ONE SOC operation, a quantitative measure of “degree of over-design coefficient (df)” is developed to better understand the impact of worst case reliability assumptions on thermal design. A simple analytical...
Optimization of halo profile for advanced MOSFET device is known to be very critical and challenging. Halo profiles around channel can cause carrier mobility degradation, leakage and higher Vt mismatch. Indium and high scattering P-type dopant (HS-P) mixed halo formation have been used widely for n-FET devices. Gallium has a better activation than Indium and is heavier specie than HS-P. Gallium could...
Thin ITO-based PET conductive membranes are the major sensing structure in resistive touch panels for network phones or other applications. However, device failures or malfunctions such as early touch and disagreement between force-applied and touched locations have been reported. By examining the surface profiles, it was found that these membranes have considerable initial out of plane deformation...
Laboratory optical atomic clocks based on quantum-logic spectroscopy of the 1S0 ↔ 3P0 transition in 27Al+ have reached a systematic uncertainty of 8.6×1018 [1], enabling table-top tests of fundamental physics [2] as well as measurements of gravitational potential differences [3]. New applications in geodesy and hydrology will require that such clocks be ruggedized and packaged so that they can be...
The rural communities in Sarawak which consist of approximately 22% of the state's population are still relying on expensive and noisy diesel generator sets for a couple of hours every night simply because they are located in remote areas where people have limited access to electrical grid. If electricity is generated by means of potential Renewable Energy (RE) resources which are incorporated with...
It has been demonstrated that laser-wakefield acceleration (LWFA) can generate several electron beam parameters rivaling those generated by conventional RF-cavity accelerators. Tunable and monoenergetic electron beams have also been produced with LWFA. Currently, active research is being directed towards finding methods to generate e-beams that have independently controllable parameters, as is standard...
In this paper, a system for leg lengthening or shortening method using wireless power transfer is examined. The first of three modules in the system is presented here. In this module, the transmitter and receiver circuits, and antennas are the focus for optimal wireless power transfer and eventual usability. The primary aim of the transmitter of having a portable, handheld and operating on batteries...
In this research, a new structure and process integration for backside illuminated CMOS image sensor by using thin wafer handling technology is proposed. First of all, the wafer of a 3 Mega pixel CMOS image sensor is temporary bonded to a silicon carrier wafer with thermal plastic material and ZoneBond technology. Then the CMOS wafer is thinned down to few microns to detect the light from the backside...
The design, cost, and the operation methodology in the 2-terminal and 3-terminal VRRAM devices are studied. The real 3D vertical-contact RRAM devices are also demonstrated and the devices showed good memory performance. A self-rectifying device is proposed to suppress the sneak current in the VRRAM.
This paper presents a capacitor discharge sintering process with a homemade silver-nickel paste for thermoelectric element interconnections. The paste is a 75 nm silver/nickel composite mixture. Without using any specific atmosphere control, the capacitor discharge is capable of nanoparticle sintering with time-efficient process at room temperature. A 0.01 F capacitor is serially connected to the...
ECM mechanics influence basic cellular functions (eg. spreading, proliferation and differentiation), thereby affecting biological processes in development, tissue homeostasis, and pathogenesis. Synthetic hydrogel matrices, given the precise control they afford, have been crucial to studying cellular mechanosensing. However, a major caveat to our understanding is the difference between widely studied...
A new test structure was designed to enable characterization of 32k transistors in one scribe lane test module using standard parametric test equipment. Using a novel design technique, a very compact layout area is achieved with minimal overhead for a Kelvin drain connection and leakage suppression of unselected devices. A new method based on channel conductance was developed to mitigate decoder series...
We investigated quarter-laser-cycle oscillations in the transient absorption signal of attosecond pulse trains and infrared pulses interacting in helium. We discuss their physical origin and show their usefulness for experimental delay-zero calibration in attosecond science.
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