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Articles 1201 - 1230 of 13207
Full-Text Articles in Entire DC Network
Fractal Newton Methods, Ali Akgül, David E. Grow
Fractal Newton Methods, Ali Akgül, David E. Grow
Mathematics and Statistics Faculty Research & Creative Works
We introduce fractal Newton methods for solving (Formula presented.) that generalize and improve the classical Newton method. We compare the theoretical efficacy of the classical and fractal Newton methods and illustrate the theory with examples.
Fully Decoupled Energy-Stable Numerical Schemes For Two-Phase Coupled Porous Media And Free Flow With Different Densities And Viscosities, Yali Gao, Xiaoming He, Tao Lin, Yanping Lin
Fully Decoupled Energy-Stable Numerical Schemes For Two-Phase Coupled Porous Media And Free Flow With Different Densities And Viscosities, Yali Gao, Xiaoming He, Tao Lin, Yanping Lin
Mathematics and Statistics Faculty Research & Creative Works
In this article, we consider a phase field model with different densities and viscosities for the coupled two-phase porous media flow and two-phase free flow, as well as the corresponding numerical simulation. This model consists of three parts: a Cahn-Hilliard-Darcy system with different densities/viscosities describing the porous media flow in matrix, a Cahn-illiard-Navier-Stokes system with different densities/viscosities describing the free fluid in conduit, and seven interface conditions coupling the flows in the matrix and the conduit. Based on the separate Cahn-Hilliard equations in the porous media region and the free flow region, a weak formulation is proposed to incorporate the …
An Integer Garch Model For A Poisson Process With Time-Varying Zero-Inflation, Isuru Panduka Ratnayake, V. A. Samaranayake
An Integer Garch Model For A Poisson Process With Time-Varying Zero-Inflation, Isuru Panduka Ratnayake, V. A. Samaranayake
Mathematics and Statistics Faculty Research & Creative Works
A serially dependent Poisson process with time-varying zero-inflation is proposed. Such formulations have the potential to model count data time series arising from phenomena such as infectious diseases that ebb and flow over time. The model assumes that the intensity of the Poisson process evolves according to a generalized autoregressive conditional heteroscedastic (GARCH) formulation and allows the zero-inflation parameter to vary over time and be governed by a deterministic function or by an exogenous variable. Both the expectation maximization (EM) and the maximum likelihood estimation (MLE) approaches are presented as possible estimation methods. A simulation study shows that both parameter …
Predicting The Friction Coefficient Of High-Friction Surface Treatment Application Aggregates Using The Aggregates' Characteristics, Ahmed S. El-Ashwah, Korrenn Broaddus, Magdy Abdelrahman
Predicting The Friction Coefficient Of High-Friction Surface Treatment Application Aggregates Using The Aggregates' Characteristics, Ahmed S. El-Ashwah, Korrenn Broaddus, Magdy Abdelrahman
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Providing Sufficient Pavement Surface Friction (I.e., Skid Resistance) between Vehicle Tires and Pavement Surface throughout the Pavement Service Life is Considered to Be One of the Main Objectives of Highway Design. Moreover, Vehicle Safety, the Amount of Consumed Fuel, and the Wearing Rate of Vehicle Tires Generally Are Influenced by Pavement Surface Friction. in This Study, a Comprehensive Experimental Testing Program Was Conducted on Different Aggregate Sources, Including Calcined Bauxite and Five Alternative Local Sources, to Assess their Friction Characteristics. the Testing Program Included a British Pendulum Tester (BPT) and a Dynamic Friction Tester (DFT), Which Were Used to Evaluate …
Dual Crosslinked Poly(Acrylamide-Co-N-Vinylpyrrolidone) Microspheres With Re-Crosslinking Ability For Fossil Energy Recovery, Jingyang Pu, Baojun Bai, Jiaming Geng, Na Zhang, Thomas Schuman
Dual Crosslinked Poly(Acrylamide-Co-N-Vinylpyrrolidone) Microspheres With Re-Crosslinking Ability For Fossil Energy Recovery, Jingyang Pu, Baojun Bai, Jiaming Geng, Na Zhang, Thomas Schuman
Chemical and Biochemical Engineering Faculty Research & Creative Works
Microspheres have been proposed to be applied in controlling wastewater production for mature oilfields and migrating leakage for gas and nuclear waste storage. However, it remains challenging for stacked microspheres to maintain strong blocking ability in micron-sized small pores or fractures. in this study, a novel microsphere was developed with comprehensive properties including high deformability and long re-crosslinking time upon tunable swelling ratio for the applications. a dual covalent and physical crosslinking strategy was used to develop novel microspheres reinforced by a hydrogen bond (H-bond, between pyrrole ring and amide group) and coordination bond (between chromium acetate (CrAc) and carboxyl …
Optimal Offering Strategy Of Genco With Joint Participation In Ftr Auction And Day-Ahead Market Considering Virtual Bidding, Hossein Mehdipourpicha, Rui Bo, Siyuan Wang
Optimal Offering Strategy Of Genco With Joint Participation In Ftr Auction And Day-Ahead Market Considering Virtual Bidding, Hossein Mehdipourpicha, Rui Bo, Siyuan Wang
Electrical and Computer Engineering Faculty Research & Creative Works
Nodal price separations in Day-Ahead (DA) market caused by transmission congestion create congestion charges/surplus that are reallocated to the market participants through the financial transmission right (FTR) auction. From a market participant's viewpoint, these two markets are interrelated because the revenue of market participant in FTR auction is determined based on the day-ahead locational marginal prices. Furthermore, virtual transactions which are designed to improve price convergence between the day-ahead and real-time markets can directly impact day-ahead prices. This impact through virtual transactions may be utilized by a market participant to increase its FTR value and improve its overall strategy in …
Repeated Low-Level Blast Exposure Alters Urinary And Serum Metabolites, Austin Sigler, Jiandong Wu, Annalise Pfaff, Olajide Adetunji, Paul Ki-Souk Nam, Donald James, Casey Burton, Honglan Shi
Repeated Low-Level Blast Exposure Alters Urinary And Serum Metabolites, Austin Sigler, Jiandong Wu, Annalise Pfaff, Olajide Adetunji, Paul Ki-Souk Nam, Donald James, Casey Burton, Honglan Shi
Chemistry Faculty Research & Creative Works
Repeated exposure to low-level blast overpressures can produce biological changes and clinical sequelae that resemble mild traumatic brain injury (TBI). While recent efforts have revealed several protein biomarkers for axonal injury during repetitive blast exposure, this study aims to explore potential small molecule biomarkers of brain injury during repeated blast exposure. This study evaluated a panel of ten small molecule metabolites involved in neurotransmission, oxidative stress, and energy metabolism in the urine and serum of military personnel (n = 27) conducting breacher training with repeated exposure to low-level blasts. The metabolites were analyzed using HPLC—tandem mass spectrometry, and the Wilcoxon …
Dual Crosslinked Poly(Acrylamide-Co-N-Vinylpyrrolidone) Microspheres With Re-Crosslinking Ability For Fossil Energy Recovery, Jingyang Pu, Baojun Bai, Jiaming Geng, Na Zhang, Thomas P. Schuman
Dual Crosslinked Poly(Acrylamide-Co-N-Vinylpyrrolidone) Microspheres With Re-Crosslinking Ability For Fossil Energy Recovery, Jingyang Pu, Baojun Bai, Jiaming Geng, Na Zhang, Thomas P. Schuman
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Microspheres have been proposed to be applied in controlling wastewater production for mature oilfields and migrating leakage for gas and nuclear waste storage. However, it remains challenging for stacked microspheres to maintain strong blocking ability in micron-sized small pores or fractures. In this study, a novel microsphere was developed with comprehensive properties including high deformability and long re-crosslinking time upon tunable swelling ratio for the applications. A dual covalent and physical crosslinking strategy was used to develop novel microspheres reinforced by a hydrogen bond (H-bond, between pyrrole ring and amide group) and coordination bond (between chromium acetate (CrAc) and carboxyl …
Detection Of Acetaminophen In Groundwater By Laccase-Based Amperometric Biosensors Using Mos2 Modified Carbon Paper Electrodes, Marcela Herrera-Domínguez, Koun Lim, Iris Aguilar-Hernández, Alejandra García-García, Shelley D. Minteer, Nancy Ornelas-Soto, Raúl Garcia-Morales
Detection Of Acetaminophen In Groundwater By Laccase-Based Amperometric Biosensors Using Mos2 Modified Carbon Paper Electrodes, Marcela Herrera-Domínguez, Koun Lim, Iris Aguilar-Hernández, Alejandra García-García, Shelley D. Minteer, Nancy Ornelas-Soto, Raúl Garcia-Morales
Chemistry Faculty Research & Creative Works
The use of enzyme-Based biosensors for the detection and quantification of analytes of interest such as contaminants of emerging concern, including over-the-counter medication, provides an attractive alternative compared to more established techniques. However, their direct application to real environmental matrices is still under investigation due to the various drawbacks in their implementation. Here, we report the development of bioelectrodes using laccase enzymes immobilized onto carbon paper electrodes modified with nanostructured molybdenum disulfide (MoS2). the laccase enzymes were two isoforms (LacI and LacII) produced and purified from the fungus Pycnoporus sanguineus CS43 that is native to Mexico. a commercial purified enzyme …
Collisional Excitation Of C2h- By H2: New Interaction Potential And Scattering Calculations, Fabien Dumouchel, Ernesto Quintas-Sánchez, Christian Balança, Richard Dawes, François Lique, Nicole Feautrier
Collisional Excitation Of C2h- By H2: New Interaction Potential And Scattering Calculations, Fabien Dumouchel, Ernesto Quintas-Sánchez, Christian Balança, Richard Dawes, François Lique, Nicole Feautrier
Chemistry Faculty Research & Creative Works
Interstellar Anions Play an Important Role in Astrochemistry as Being Tracers of the Physical and Chemical Conditions in Cold Molecular Clouds and Circumstellar Gas. the Local Thermodynamic Equilibrium is Generally Not Fulfilled in Media Where Anions Are Detected and Radiative and Collisional Data Are Required to Model the Observed Lines. the C2H- Anion Has Not Yet Been Detected in the Interstellar Medium; However, Collisional Data Could Be Used for Non-LTE Models that Would Help in Identifying the Most Intense Lines. for This Purpose, We Have Computed the First 4D Potential Energy Surface (PES) of the C2H--H2 Complex using an Explicitly …
Calibration Of Bbm Parameters Using The Modified State Surface Approach, Xiong Zhang, Beshoy Riad, Eduardo E. Alonso
Calibration Of Bbm Parameters Using The Modified State Surface Approach, Xiong Zhang, Beshoy Riad, Eduardo E. Alonso
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Barcelona Basic Model (BBM) developed by Alonso et al. [1] is the first and the mostwidely used elasto-plastic model for unsaturated soils. The BBM successfully explained many key features of unsaturated soils and received extensive acceptance. However, there is lack of a well-establishedmethod for selecting parameter values for the BBM from laboratory tests, although a variety of methods have been recently developed for calibrating model parameters for the BBM. Concerns still exist on the correctness and robustness of such parameter value selection procedures. The above statements were evidenced by a recent benchmark exercise on selection of parameter values for …
Transannular Functionalization Of Multiple C(Sp3)-H Bonds Of Tropane Via An Alkene-Bridged Palladium(I) Dimer, Ellen Y. Aguilera, En Chih Liu, Scott M. Thullen, Melanie S. Sanford
Transannular Functionalization Of Multiple C(Sp3)-H Bonds Of Tropane Via An Alkene-Bridged Palladium(I) Dimer, Ellen Y. Aguilera, En Chih Liu, Scott M. Thullen, Melanie S. Sanford
Chemistry Faculty Research & Creative Works
This Communication describes the Pd-catalyzed C(sp3)-H functionalization of a tropane derivative to generate products with functionalization at two (β/γ) or three (β/γ/β) different sites on the alicyclic amine core. These reactions proceed via an initial dehydrogenation to generate an alkene product that can react further to form a Pd(I) alkene-bridged dimer. Functionalization of this dimer affords β/γ/β-functionalized allylic arylation and allylic acetoxylation products.
Overdetermined Control Systems On Time Scales, Drew Barnes, Danian Castillo, Nick Wintz
Overdetermined Control Systems On Time Scales, Drew Barnes, Danian Castillo, Nick Wintz
NASA-Missouri Space Grant Consortium
Control theory is a branch of mathematics focused on observing or controlling a process governed by a dynamic equation. We use state-space notation to represent all meaningful information about of our process. This means our processes are expressed in vector form. Typically, the state matrix is square. In this project, we consider a control system where the corresponding state is over-determined, meaning there are more rows than columns. In addition, our state equation is on a time scale T, which allows us to consider discrete, continuous, or hybrid measurements. Here, we offer two methods to solve the dynamic system. Finally, …
Novel Topological Semimetals: Growth & Characterizing Sm3hfbi5, Patrick Lambdin
Novel Topological Semimetals: Growth & Characterizing Sm3hfbi5, Patrick Lambdin
NASA-Missouri Space Grant Consortium
After dozens of reactions, the Missouri State University Crystal Growth Lab created a likely-topological material, Sm3HfBi5, through flux crystal growth methods. First created experimentally in 2015, Weyl materials are desirable and have garnered much interest due to the materials’ ability to conduct electricity exclusively on their surfaces. This paper discusses methods of selecting and mixing materials to be sealed inside an evacuated or argon-backfilled glass tube which itself is placed inside a furnace kept at high temperatures, as part of a flux growth method, as well as discussing results and difficulties encountered while growing the crystals.
Analysis Of Laser Cut Living Hinge Pattern Design, Andrew Weber, Hussein Nassar
Analysis Of Laser Cut Living Hinge Pattern Design, Andrew Weber, Hussein Nassar
NASA-Missouri Space Grant Consortium
Living hinges are flexure bearings that consist of one material which makes up both the hinge and rigid end connections. They are typically made of plastics that can naturally bend without causing permanent strain. Plastic living hinges usually consist of a flat, thin strip of material connecting two ends, and have a wide range of commercial applications. The function of these living hinges can be replicated in plywood samples through subtractive manufacturing. Laser cut patterns produced in plywood samples reduce the flexural rigidity of the material and are popular amongst hobbyists.
Input Data Preparation For Ai Gravity Prediction Pipeline, Jacob Wilson, Emily Sigmund
Input Data Preparation For Ai Gravity Prediction Pipeline, Jacob Wilson, Emily Sigmund
NASA-Missouri Space Grant Consortium
The AI Gravity Project uses machine learning techniques to predict the actual value of gravity anomalies in places where data cannot be physically collected due to multiple constraining factors. Artificial intelligence is used to predict these anomalies. The predicted anomalies combined with the physically collected anomalies will eventually be combined to create higher resolution gravity models of the Earth. Here, the details of the first steps of the AI Gravity Project are presented. This includes the data pulling, cleaning, and analyzing the data prior to training the model.
An Introductory Investigation Of Dust Devils On Mars: Computational Fluid Dynamics Modeling, Alexios Nicolas Philippou, Kakkattukuzhy M. Issac
An Introductory Investigation Of Dust Devils On Mars: Computational Fluid Dynamics Modeling, Alexios Nicolas Philippou, Kakkattukuzhy M. Issac
NASA-Missouri Space Grant Consortium
This report investigates the flow characteristics of tornado like vortices which can be used to describe an array of axisymmetric rotating vertical columns of fluid such as dust devils, steam devils and tornadoes. These vortices have been recreated within vortex chambers in research facilities, but in focus of this report the investigation is conducted through numerical simulations using the Computational Fluid Dynamics (CFD) software package provided by ANSYS. By varying the main governing nondimensional parameter of swirl ratio through the computational domain’s boundary conditions, different flow characteristics appear which confirm theories presented in previous papers. This enables the research conducted …
Evaluation Of Sustainable Transonic Truss-Braced Wing Aircraft Configurations Using Liquid Hydrogen Fuel, Bryce Thomas
Evaluation Of Sustainable Transonic Truss-Braced Wing Aircraft Configurations Using Liquid Hydrogen Fuel, Bryce Thomas
NASA-Missouri Space Grant Consortium
There is pressing need for increase in efficiency and reductions in greenhouse gas (GHG) emissions for the next generation commercial passenger aircraft in order to reduce the environmental impact of the aviation industry. The focus of this work is on the design considerations for a mid-range single aisle commercial aircraft using liquid hydrogen for propulsion. A matrix of aircraft configurations is considered with varying size of fuel tanks placed external or internal to the fuselage. In particular, an aircraft configuration with a high aspect ratio truss braced wing is investigated to improve lift and range in comparison to a more …
Experimental Studies Of Volatile Fractionation In The Early Solar System, Emily Rapp
Experimental Studies Of Volatile Fractionation In The Early Solar System, Emily Rapp
NASA-Missouri Space Grant Consortium
Isotopic Fractionation is a useful tool for investigating the formation of planetary bodies in the Solar System. Moderately volatile elements such as Potassium, Copper and Zinc can provide insight into the formative process and the origin of rocky planets. In this experiment Ortenberg basalt is heated to 1400° Celsius for different durations of time ranging from 1 minute at temperature to 7 hours at temperature under high vacuum conditions. The fractionation factor for K has been determined to be 0.9944 and the fractionation factor for Cu was found to be 0.9961. The fractionation factors of the Moon were found to …
Masses And Radii Of Subdwarf B Stars - Sed Fitting Method, Noah Singer
Masses And Radii Of Subdwarf B Stars - Sed Fitting Method, Noah Singer
NASA-Missouri Space Grant Consortium
The goal of this project is to determine masses and radii of hot subdwarf B stars in hopes of connecting these fundamental intrinsic properties to the evolutionary history of such stars. Subdwarf B stars burn helium in their core, serving as interesting physical laboratories, and the abundance of public data, including GAIA parallaxes and archival photometry, can be used to determine stellar characteristics. In this study, observed photometry is compared to synthetic photometry, calculated from a similar-stellaratmosphere model spectrum. This match determines the effective stellar temperature and radius. With an estimate of surface gravity, mass can be determined. Such determinations …
Compact Steam Generator Numerical Analysis And Mechanics Design, Parker Rockholm, Congshan Mao
Compact Steam Generator Numerical Analysis And Mechanics Design, Parker Rockholm, Congshan Mao
NASA-Missouri Space Grant Consortium
A heat exchanger is a device that is used to transfer heat between two fluids that are at different temperatures and are separated by a solid wall. This system is used in many engineering applications such as air conditions, power production, waste heat recovery and chemical processing. Heat exchangers are commonly classified by their flow arrangement and type of construction. A special and important class of heat exchanger is termed compact heat exchangers, but ‘compact’ does not refer to its size. These heat exchangers are used to achieve higher performance by using very large surface densities (heat transfer surface area …
Investigating The Presence Of Volatile Molecules On Comet 67p, Keith Reece
Investigating The Presence Of Volatile Molecules On Comet 67p, Keith Reece
NASA-Missouri Space Grant Consortium
67P/Churyumov—Gerasimenko is a Jupiter Family comet that originated in the Kuiper Belt. We observed six volatile compounds using IRTF on Mauna Kea. We report the volatile compound abundances of OH, H2O, NH2, C2H2, HCN, and NH3 in orders 170, 171, and 172 of the comet’s spectrum.
Simulating Mass Extinctions In An Agent-Based Evolutionary Model, Emily Vastola
Simulating Mass Extinctions In An Agent-Based Evolutionary Model, Emily Vastola
NASA-Missouri Space Grant Consortium
In the face of an extinction-level event, under what conditions are populations more likely to recover? When recovery happens, how do populations diversify to fill empty ecological niches? These questions in evolutionary biology are especially important in the current age of humanity-driven mass extinction. Our study uses a computational model of evolutionary dynamics to examine these questions. Simulated organisms on a two-dimensional phenotype space reproduce through assortative mating and an extinction event is triggered for a set number of generations halfway through the simulation. This model has been shown to exhibit nonequilibrium phase transition behavior when mutability or death rate …
Supersonic Wind Tunnel Improvement For Advanced Laser-Based Non-Intrusive Diagnostics, Joshua Gary
Supersonic Wind Tunnel Improvement For Advanced Laser-Based Non-Intrusive Diagnostics, Joshua Gary
NASA-Missouri Space Grant Consortium
This work presents an approach to the design, and theoretical application, of a new test section for the Missouri S&T Supersonic Wind Tunnel to be used with advanced laserbased non-intrusive diagnostics. Supersonic wind tunnel test sections present multiple challenges. They need to ensure proper flow by avoiding jet-flow interactions and ensuring started conditions; they need to withstand large pressure loads in the case of tunnel unstart; they need to provide easy optical access for advanced diagnostics; they need to be modular and adaptable for different experiments. This work presents detailed analytical and numerical analyses of the mechanical loads. Based on …
In Situ Confocal Raman Microscopy Of Redox Polymer Films On Bulk Electrode Supports, Jiahe Xu, Miharu Koh, Shelley D. Minteer, Carol Korzeniewski
In Situ Confocal Raman Microscopy Of Redox Polymer Films On Bulk Electrode Supports, Jiahe Xu, Miharu Koh, Shelley D. Minteer, Carol Korzeniewski
Chemistry Faculty Research & Creative Works
A Spectro electrochemical cell is described that enables confocal Raman microscopy studies of electrode-supported films. the confocal probe volume (∼1 μm3) was treated as a fixed-volume reservoir for the observation of potential-induced changes in chemical composition at microscopic locations within an ∼20 μm thickness layer of a redox polymer cast onto a 3 mm diameter carbon disk electrode. using a Raman system with high collection efficiency and wavelength reproducibility, spectral subtraction achieved excellent rejection of background interferences, opening opportunities for measuring within micrometer-scale thickness redox films on widely available, low-cost, and conventional carbon disk electrodes. the cell performance and spectral …
New Guidelines For Presenting Electrochemical Data In All Acs Journals, Shelley Minteer, Jingguang Chen, Song Lin, Cathleen Crudden, Stefanie Dehnen, Prashant V. Kamat, Marisa Kozlowski, Géraldine Masson, Scott J. Miller
New Guidelines For Presenting Electrochemical Data In All Acs Journals, Shelley Minteer, Jingguang Chen, Song Lin, Cathleen Crudden, Stefanie Dehnen, Prashant V. Kamat, Marisa Kozlowski, Géraldine Masson, Scott J. Miller
Chemistry Faculty Research & Creative Works
No abstract provided.
Conformational Comparison Of Urea And Thiourea Near The Ccsd(T) Complete Basis Set Limit, Kayleigh R. Barlow, Gregory S. Tschumper
Conformational Comparison Of Urea And Thiourea Near The Ccsd(T) Complete Basis Set Limit, Kayleigh R. Barlow, Gregory S. Tschumper
Chemistry Faculty Research & Creative Works
The global minima of urea and thiourea were characterized along with other low-lying stationary points. Each structure was optimized with the CCSD(T) method, and triple-ζ correlation consistent basis sets followed by harmonic vibrational frequency computations. Relative energies evaluated near the complete basis set limit with both canonical and explicitly correlated CCSD(T) techniques reveal several subtle but important details about both systems. These computations resolve a discrepancy by demonstrating that the electronic energy of the C2v second-order saddle point of urea lies at least 1.5 kcal mol−1 above the C2 global minimum regardless of whether the structures were optimized with MP2, …
Effects Of Autoionizing Resonances On Wave-Packet Dynamics Studied By Time-Resolved Photoelectron Spectroscopy, Pengju Zhang, Van Hung Hoang, Chuncheng Wang, Tran Trung Luu, Vít Svoboda, Anh-Thu Le, Hans Jakob Wörner
Effects Of Autoionizing Resonances On Wave-Packet Dynamics Studied By Time-Resolved Photoelectron Spectroscopy, Pengju Zhang, Van Hung Hoang, Chuncheng Wang, Tran Trung Luu, Vít Svoboda, Anh-Thu Le, Hans Jakob Wörner
Physics Faculty Research & Creative Works
We Report a Combined Experimental and Theoretical Study on the Effect of Autoionizing Resonances in Time-Resolved Photoelectron Spectroscopy. the Coherent Excitation of N2 by ∼14.15 EV Extreme-Ultraviolet Photons Prepares a Superposition of Three Dominant Adjacent Vibrational Levels (V′=14-16) in the Valence B′ ςu+1 State, Which Are Probed by the Absorption of Two or Three Near-Infrared Photons (800 Nm). the Superposition Manifests itself as Coherent Oscillations in the Measured Photoelectron Spectra. a Quantum-Mechanical Simulation Confirms that Two Autoionizing Rydberg States Converging to the Excited a Π2u and B ςu+2 N2+ Cores Are Accessed by the Resonant Absorption of …
Dynamical Formation Of Two-Fold Fragmented Many-Body State Induced By An Impurity In A Double-Well, Jie Chen, Simeon I. Mistakidis, Peter Schmelcher
Dynamical Formation Of Two-Fold Fragmented Many-Body State Induced By An Impurity In A Double-Well, Jie Chen, Simeon I. Mistakidis, Peter Schmelcher
Physics Faculty Research & Creative Works
We Unravel The Correlated Quantum Quench Dynamics Of A Single Impurity Immersed In A Bosonic Environment Confined In An One-Dimensional Double-Well Potential. A Particular Emphasis Is Placed On The Structure Of The Time-Evolved Many-Body (MB) Wave Function By Relying On A Schmidt Decomposition Whose Coefficients Directly Quantify The Number Of Configurations That Are Macroscopically Populated. For A Non-Interacting Bosonic Bath And Weak Postquench Impurity-Bath Interactions, We Observe The Dynamical Formation Of A Two-Fold Fragmented MB State Which Is Related To Intra-Band Excitation Processes Of The Impurity And Manifests As A Two-Body Phase Separation (Clustering) Between The Two Species For Repulsive …
Epitaxial Single-Domain Cu-Btc Metal-Organic Framework Thin Films And Foils By Electrochemical Conversion Of Cuprous Oxide, Xiaoting Zhang, Bin Luo, Avishek Banik, John Z. Tubbesing, Jay A. Switzer
Epitaxial Single-Domain Cu-Btc Metal-Organic Framework Thin Films And Foils By Electrochemical Conversion Of Cuprous Oxide, Xiaoting Zhang, Bin Luo, Avishek Banik, John Z. Tubbesing, Jay A. Switzer
Chemistry Faculty Research & Creative Works
Metal-Organic Frameworks (MOFs) Are an Important Class of Crystalline Porous Materials with Extensive Chemical and Structural Merits. However, the Fabrication of MOF Thin Films Oriented Along All Crystallographic Axes to Achieve Well-Aligned Nanopores and Nanochannels with Uniform Apertures Remains a Challenge. Here, We Achieved Highly Crystalline Single-Domain MOF Thin Films with the [111] Out-Of-Plane Orientation by Electrochemical Conversion of Cuprous Oxide. Copper(II)-Benzene-1,3,5-Tricarboxylate, Cu3(BTC)2 (Referred to as Cu-BTC), is a Well-Known Metal-Organic Open Framework Material with a Cubic Crystal System. Epitaxial Cu-BTC(111) Thin Films Were Manufactured by Electrochemical Oxidation of Cu2O(111) Films Electrodeposited on Single-Crystal Au(111). …