A5019852974- Nanowire Synthesis and Applications
- Transportation Planning and Optimization
- Urban Transport and Accessibility
- Semiconductor Quantum Structures and Devices
- Photonic and Optical Devices
- Transportation and Mobility Innovations
- International Business and FDI
- Innovation and Knowledge Management
- Geometric Analysis and Curvature Flows
- Quantum Dots Synthesis And Properties
- Nonlinear Partial Differential Equations
- Energy, Environment, and Transportation Policies
- Numerical methods in inverse problems
- Economic and Environmental Valuation
- Urban and Freight Transport Logistics
- Sharing Economy and Platforms
- Electric Vehicles and Infrastructure
- Corporate Finance and Governance
- Business Strategy and Innovation
- Vehicle emissions and performance
- Municipal Solid Waste Management
- Geometry and complex manifolds
- Traffic and Road Safety
- Energy Efficiency and Management
- Evacuation and Crowd Dynamics
University of San Francisco
2006-2024
University of Hawaiʻi at Mānoa
2019-2023
Chinese Culture University
2022
West Virginia University
2020
Rochester Institute of Technology
2014-2019
Institute for Sustainability
2017
University of California, Berkeley
2006-2014
National Taipei University of Technology
2014
Portland State University
2011-2013
University of California, Davis
2013
Significance Efficient cost-effective single-molecule sequencing platforms will facilitate deciphering complete genome sequences, determining haplotypes, and identifying alternatively spliced mRNAs. We demonstrate a nanopore-based by synthesis approach that accurately distinguishes four DNA bases electronically detecting differentiating different polymer tags attached to the terminal phosphate of nucleotides during their incorporation into growing strand in polymerase reaction. With nanopore...
Monolithic integration of III-V compound semiconductor devices with silicon CMOS integrated circuits has been hindered by large lattice mismatches and incompatible processing due to high epitaxy temperatures. We report the first GaAs-based avalanche photodiodes (APDs) light emitting diodes, directly grown on at a very low, CMOS-compatible temperature fabricated using conventional microfabrication techniques. The APDs exhibit an extraordinarily multiplication factor low voltage resulting from...
ABSTRACT Purpose Hypomagnesemia associated with proton pump inhibitor (PPI) therapy has been documented in case reports. We performed a cross‐sectional study to examine the association between PPI use and serum magnesium (Mg) levels or hypomagnesemia. Methods Data were extracted from hospitalized adults basic metabolic panels and/or available during hospital stays. The first Mg value was used for data analysis. is defined as less than 1.7 mg/dL (or 0.70 mmol/L). Multiple linear logistic...
Technological innovation has transformed the role of electronics in education, work, and society. However, rapid adoption obsolescence consumer also led to new concerns about resource consumption waste management. Past research address these sustainability challenges been constrained by data that do not reflect nascent trends product evolution adoption, thereby limiting ability create assess proactive solutions. This study presents a dynamic analysis electronic (e-waste) United States using...
Models of travel time perception and learning mechanisms in traffic networks are presented. Mechanisms for updating times light new experiences triggering terminating the process examined. Travel modeled on basis concepts from Bayesian statistical inference. with use simple heuristic rules based inter-update period thresholds that define salience acceptable confidence levels. These models embedded inside a microscopic (agent-based) simulation framework model to study their collective effects...
Significance DNA sequencing has been dramatically expanding its scope in basic life science research and clinical medicine. Recently, a set of polymer-tagged nucleotides were shown to be viable substrates for replication electronically detectable nanopore. Here, we describe the design characterization polymerase–nanopore protein construct on an integrated chip. This system incorporates all four tagged distinguishes single–tagged-nucleotide addition real time. Coupling catalysis...
We report and characterize second-harmonic generation from a single wurtzite GaAs nanoneedle. The crystal structure of the nanoneedle relaxes strict nonlinear selection rules normal zincblende while maintaining its strong optical coefficients. ability to grow nanoneedles without catalysts on (111) Si makes them particularly attractive as optoelectronic media compatible with complementary metal-oxide-semiconductor technology.
The heterogeneous integration of III-V optoelectronic devices with Si electronic circuits is highly desirable because it will enable many otherwise unattainable capabilities. However, direct growth thin film on silicon substrates has been very challenging large mismatches in lattice constants and thermal coefficients. Furthermore, the high epitaxial temperature detrimental to transistor performance. Here, we present a detailed studies novel mode which yields catalyst-free (Al,In)GaAs...
Nanoscale self-assembly offers a pathway to realize heterogeneous integration of III-V materials on silicon. However, for nanowires directly grown silicon, dislocation-free single-crystal quality could only be attained below certain critical dimensions. We recently reported new approach that overcomes this size constraint, demonstrating the growth InGaAs/GaAs and InP nanoneedles with base diameters exceeding 1 μm. Here, we report distinct optical characteristics which are varied from mostly...
We report novel indium gallium arsenide (InGaAs) nanopillar lasers that are monolithically grown on (100)-silicon-based functional metal-oxide-semiconductor field effect transistors (MOSFETs) at low temperature (410 °C). The MOSFETs maintain their performance after the growth, providing a direct demonstration of complementary metal-oxide-semiconudctor (CMOS) compatibility. Room-temperature operation optically pumped is also achieved. To our knowledge, this first time integrated and have been...
We use the American Time Use Survey (ATUS) to characterize how different consumers in US might Autonomous Vehicles (AVs). Our approach is identify sub-groups of population likely benefit from AVs and compare their activity patterns with an otherwise similar group. The first subgroup working individuals who drive work long total travel times. Auto-travelers top 20% time number 19 million 1.6 h more on a workday than those bottom 80%. For car-commuting professionals, additional long-traveling...
Creating a sense of place and community is guiding principle in designing livable high-quality built environments. This paper presents framework for understanding the relationship between design people’s perceptions about place, within an urban context. While large volume literature on (SOP) already exists, proposed its application field present unique opportunity to add new knowledge this interdisciplinary topic. research will investigate empirical architecture/urban their contributions...
Heterogeneous integration of dissimilar single crystals is intense research interests. Lattice mismatch has been the most challenging bottleneck which limits growth sufficient active volume for functional devices. Here, we report self-assembled, catalyst-free, crystalline GaAs nanoneedles grown on sapphire substrates with 46% lattice mismatch. The have a 2–3 nm tip, wurtzite phase, excellent optical quality, and dimensions scalable time. needles same sharp, hexagonal pyramid shape from ∼100...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT5'-[4-(Pivaloyloxy)-1,3,2-dioxaphosphorinan-2-yl]-2'-deoxy-5-fluorouridine: A Membrane-Permeating Prodrug of 5-Fluoro-2'-deoxyuridylic Acid (FdUMP)David Farquhar, Roger Chen, and Saeed KhanCite this: J. Med. Chem. 1995, 38, 3, 488–495Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995https://doi.org/10.1021/jm00003a012RIGHTS & PERMISSIONSArticle Views315Altmetric-Citations44LEARN...
Plug-in Electric Vehicles (PEVs) are considered one solution to reducing GHG emissions from private transport. Additionally, PEV adopters often have free access public charging facilities. Through a pattern analysis, this study identifies five distinct clusters of daily profiles observed at the stations. Empirically patterns indicate significant amount operational inefficiency, where 54% total parking duration PEVs do not consume electricity, preventing other users charging. This opportunity...