A5015746825- Thin-Film Transistor Technologies
- ZnO doping and properties
- Nanowire Synthesis and Applications
- Asphalt Pavement Performance Evaluation
- Landslides and related hazards
- Urban Stormwater Management Solutions
- Geotechnical Engineering and Underground Structures
- Semiconductor materials and devices
- Geotechnical Engineering and Soil Stabilization
- Embedded Systems Design Techniques
- Infrastructure Maintenance and Monitoring
- Silicon and Solar Cell Technologies
- Transition Metal Oxide Nanomaterials
- VLSI and Analog Circuit Testing
- Interconnection Networks and Systems
- Advancements in Semiconductor Devices and Circuit Design
- Integrated Circuits and Semiconductor Failure Analysis
- Image Processing and 3D Reconstruction
- CCD and CMOS Imaging Sensors
- Technology and Security Systems
- Smart Materials for Construction
- Geotechnical and Geomechanical Engineering
- Parallel Computing and Optimization Techniques
- Seismic Waves and Analysis
- Organic Electronics and Photovoltaics
The University of Texas at Austin
1988-2024
Georgia Institute of Technology
2024
Pusan National University
2018-2021
Chung-Ang University
2014-2016
Samsung (South Korea)
2006-2007
University of Minnesota
1988-1992
A method is proposed for achieving fault tolerance by introducing a redundant stage special-purpose fast Fourier transform (FFT) processor. concurrent error-detection technique, called recomputing alternate path, used to detect errors during normal operation. Once an error detected, faulty butterfly can be located with log (N+5) additional cycles. The has 100% detection and location capability, regardless of the magnitude roundoff errors. gracefully degraded reconfiguration using introduced....
A fault-tolerant systolic sorter design is proposed. An algorithm-based fault tolerance achieved by testing the invariants of a during normal operation. Transient and permanent computation errors can be detected using error-checking code some redundant cells. block with single faulty cell located. Small hardware overhead negligible time are shown to major advantages method. hierarchical structure suggested as an efficient architecture for realizing offline fault-testing method stuck-at...
We investigate the effects of ambient atmosphere on electrical performance p-type tin monoxide (SnO) thin-film transistors (TFTs), and present effective method for passivation SnO TFTs using a SU-8 organic layer. The experimental data shows that without layer suffer from degradation under humid environments, which implies formation is necessary in stable operation devices. was successfully incorporated as TFTs. with exhibit very similar transfer characteristics those layer, show much...
We investigate the effects of environmental water and oxygen on electrical stability p-type tin monoxide (SnO) thin-film transistors (TFTs). Under negative gate bias stresses, there was a larger threshold voltage shift (ΔV <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sub> ) in devices that had been exposed to than for remained unexposed. However, under positive exhibited approximately same ΔV as what observed not exposed. This phenomenon...
Accurate seismic ground response analysis is crucial for the design and safety of civil infrastructure establishing effective mitigation measures against risks hazards. This a complex process due to nonlinear soil properties complicated underground geometries. As simplified approach, one-dimensional wave propagation model, which assumes that waves travel vertically through horizontally layered medium, widely adopted its reasonable performance in many practical applications. study explores...
This paper experimentally investigates the subgap density of states (DOS) in p-type tin monoxide (SnO) thin-film transistors (TFTs) for first time by using temperature-dependent field-effect measurements. As temperature increases, turn-on voltage moves positive direction, and off-current subthreshold slope continuously increase. We found that conductivity SnO TFT obeys Meyer–Neldel (MN) rule with a characteristic MN parameter 28.6 eV−1 region, from which we successfully extracted DOS combing...
We investigated the effects of illumination and bias stresses on electrical performance p-type tin monoxide (SnO) thin-film transistors (TFTs). The transfer curve shifts in positive direction with an increase subthreshold slope (SS) OFF-current (I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OFF</sub> ) under light illumination, where SS I was attributed to photoconductivity SnO, especially at back channel region. positively shifted by...
The permeable pavement is one of Low Impact Development technics that allows stormwater to infiltrate through the surface and underlying base layer, thereby reducing runoff preventing water contamination. For layers pavements, open-graded aggregates are often used store in pore aggregate layers. mechanical behavior has not been a major interest industry society, therefore there much less information known for compacted comparing dense-graded materials. This study aims at investigating or...
Open-graded aggregates (OGAs) are free-draining materials often used as the base layer of permeable pavements to allow infiltration or drainage stormwater. Despite their widespread use, compaction quality OGA layers has not been specified properly. The currently density-based control (QC) limitations; obtaining field density and maximum dry OGAs by typical methods is challenging, due unique properties. To overcome these limitations, modulus-based QC can be an alternative. In this study, five...
We leverage physics-embedded differentiable graph network simulators (GNS) to accelerate particulate and fluid simulations solve forward inverse problems. GNS represents the domain as a with particles nodes learned interactions edges. Compared modeling global dynamics, enables learning local interaction laws through edge messages, improving its generalization new environments. achieves over 165x speedup for granular flow prediction compared parallel CPU numerical simulations. propose novel...
The authors demonstrate the enhancement mode p-type SnO thin-film transistors (TFTs) using dual gate (DG) structures. cross-linked polyvinyl alcohol dielectric with a polymethylmethacrylate buffer layer is formed as top (TG) insulator of DG TFT. fabricated TFT exhibits better electrical performances than bottom (BG) and TG TFTs including higher field-effect mobility smaller subthreshold slope. In TFTs, threshold voltage (Vth) BG linearly modulated by applied to electrode. transfer curve...
The temperature-dependent electrical instability of p-type SnO thin-film transistors (TFTs) was investigated for various stress and temperature conditions. fabricated TFT suitably passivated using an SU-8 organic layer to prevent environmental effects on the stress-induced instability. Under negative gate bias stress, transfer curves showed a parallel shift in direction every studied (room temperature, 50 °C, 80 °C). This result indicates that curve is mainly due hole-trapping interface...
The impermeable cover in urban area has been growing due to rapid urbanization, which prevents stormwater from being naturally infiltrated into the ground. There is a higher chance of flooding covered with conventional concretes and asphalts. permeable pavement one Low-Impact Development (LID) technologies that can reduce surface runoff water pollution by allowing systems. Unlike traditional pavements, bases employ open-graded aggregates (OGAs) highly uniform particle sizes. very little...
We investigate the intrinsic electrical characteristics and source/drain parasitic resistance in p-type SnO TFTs fabricated using Ni electrodes based on gated-four-probe method. Because of relatively high work function inexpensive price, has been most frequently used as electrode materials p -type TFTs. However, our experimental data shows that width normalized resistances TFT with are around one to three orders magnitude higher than those representative n-type oxide TFT, amorphous indium–...
We investigate the effects of magnesium (Mg) suppressor layer on electrical performances and stabilities amorphous indium-zinc-tin-oxide (a- ITZO) thin-film transistors (TFTs). Compared to ITZO TFT without a Mg layer, ITZO:Mg exhibits slightly smaller field-effect mobility much reduced subthreshold slope. The shows improved compared under both positive-bias negative-bias-illumination stresses. From Xray photoelectron spectroscopy O1s spectra with fitted curves for films, we observe that...
Permeable pavement is a technology that allows rainwater to infiltrate into the pavement. pavements not only help reduce surface runoff by allowing pavement, but also improve water quality with filter layer removes particulate matter pollutants. This study evaluated removal efficiency of bottom ash-sand mixtures as layers for removing fine (≤10 μm) or ultrafine (≤2.5 in laboratory. Five media were tested: silica sand, ash, and 30:70, 50:50, 70:30 ratios. The mixed filters exhibited more...
A probabilistic diagnosis algorithm for identifying faulty units in sparsely interconnected systems is presented. The partially based on a comparison approach where identical test vectors are applied to all and their outputs intracompared. schemes majority-voting or voting-with-threshold-of-1 inappropriate diagnosing those implemented single chip wafer. Unlike other schemes, the authors' scheme adjusts parameters depending unit yield, degree of connectivity, probability common-cause...
For the first time, a transistor performance improvement is achieved by increasing tensile stress of O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> -TEOS pre-metal dielectric (PMD) using novel plasma treatment and integration scheme. Plasma-treated films show more value about twice than that an as-deposited xmlns:xlink="http://www.w3.org/1999/xlink">3 </sub> film. The process shows up to 10% I...