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Rational effect of CuSe2phase with octadecyl amine modified reduced graphene composite for dual-mode sensing of environmental hazardous anthelminthic drug in aquatic and biological samples

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Journal of Environmental Chemical engineering 2023年第1期11卷

作者： Hwa, Kuo-Yuan Ganguly, Anindita Santhan, Aravindan Department of Molecular Science and Engineering National Taipei University of Technology Taipei Taiwan International Graduate Program in Energy and Optoelectronic Materials National Taipei University of Technology Taipei Taiwan

The increasing usage of antihelminthic drug mebendazole (MEB) in humans and livestock poses serious threat and is considered a significant environmental pollutant. Hence, monitoring the MEB residues in environmental samples, and human fluids is essential to decrease the ecological risk and improve the health of humans. In this work, copper selenide (CuSe2) nano/microspheres were hydrothermally synthesized and ultrasonically treated with rGO surface modified with ODA alkyl amine (rGO-ODA). The optical, structural, morphological, and functional analysis were performed which revealed the CuSe2 in marcasite phase, orthorhombic pattern with Pnnm space group, and substantial composite formation. The morphological studies revealed sphere structure of the CuSe2 and wrinkled sheets of rGO-ODA. A sensor that detects MEB using the cyclic voltammetry (CV), differential pulse voltammetry (DPV) and UV-Vis absorbance techniques was developed. For DPV analysis, the sensor exhibited a very low value for limit of detection 13.55 nM and a sensitivity of 9.4871 μA M-1cm-2. For UV-Vis, the sensor demonstrated a very low limit of detection 22.3 nM. The use of this sensor was validated in real-time analysis with aquatic and biological real samples. The results suggested > 90% of analyte recovery and enhanced efficiency for MEB detection with a potential for commercialization in future. © 2022 Elsevier Ltd.

关键词： Copper compounds

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Study of Machine Learning Techniques for Damage Identification in a Beam 10th

Study of Machine Learning Techniques for Damage Identifica...

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10th International Conference on Wave Mechanics and Vibrations, WMVC 2022

作者： da Silva Coelho, Jefferson de Sousa, Amanda Aryda Silva Rodrigues Machado, Marcela Rodrigues Dutkiewicz, Maciej Department of Mechanical Engineering University of Brasília Campus Universitário Darcy Ribeiro Faculdade de Tecnologia - Asa Norte DF Brasília Brazil Post-Graduate Program - Integrity of Engineering Materials University of Brasília Campus Universitário Darcy Ribeiro Faculdade de Tecnologia - Asa Norte DF Brasília70910-900 Brazil Faculty of Civil Environmental Engineering and Architecture University of Science and Technology Bydgoszcz85-796 Poland

ISBN: (纸本)9783031157578

Damage is defined as any change to the material, geometry or boundary condition that can modify the structure’s properties or response. In the past, damage identification was performed through periodical inspection, non-destructive testing/non-destructive evaluation, or visual observation. Structural health monitoring (SHM) has emerged to transition from offline damage identification to near real-time and online damage assessment. Hence, SHM is a damage detection strategy to monitor a structure for a period using a series of continuous measurement devices, which then collect the system’s characteristics and subsequently perform statistical analysis to assess the current circumstances and health of the structure. One of the first steps for the study of SHM is damage detection followed by monitoring. Machine Learning (ML) techniques can be used to develop viable algorithms to make potential predictions. ML algorithms are therefore providing the tools needed to enhance the capabilities of SHM systems and provide intelligent solutions to past challenges. Preliminary studies have reviewed that the extension of ML into SHM has dramatically increased the system’s capabilities, providing innovative solutions to different research challenges. This work conducts a study of the use of ML to identify damage in a beam and discuss the challenge of usage, performance and implementation of each technique. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Decision trees

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Solid State Electrolyte to Enable Structural Supercapacitors

Solid State Electrolyte to Enable Structural Supercapacitors

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IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

作者： Nandu Koripally Lulu Yao Jason D. Azoulay Tse Nga Ng Department of Electrical and Computer Engineering University of California San Diego La Jolla CA USA Materials Science Engineering Program University of California San Diego La Jolla CA USA Chemisty Department Georgia Institute of Technology Atlanta GA USA

ISBN: (数字)9798350383263

ISBN: (纸本)9798350383270

Supercapacitors are known for longer cycle life and faster charging rate compared to batteries. However, the energy density of supercapacitors requires improvement to expand their application space. To raise the energy density of structural supercapacitors, this work demonstrates a low resistance and mechanically strong solid-state electrolyte.

关键词： Resistance Supercapacitors Electrolytes Sensor systems Sensors Batteries

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Challenges of measuring spin Seebeck noise

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Physical Review B 2024年第10期109卷 104429-104429页

作者： Renjie Luo Xuanhan Zhao Tanner J. Legvold Liyang Chen Changjiang Liu Deshun Hong Anand Bhattacharya Douglas Natelson Department of Physics and Astronomy Rice University Houston Texas 77005 USA Applied Physics Program Smalley-Curl Institute Rice University Houston Texas 77005 USA Materials Science Division Argonne National Laboratory Lemont Illinois 60439 USA Department of Electrical and Computer Engineering Rice University Houston Texas 77005 USA Department of Materials Science and NanoEngineering Rice University Houston Texas 77005 USA

Just as electronic shot noise in driven conductors results from the granularity of charge and the statistical variation in the arrival times of charge carriers, there are predictions for fundamental noise in magnon currents due to angular momentum being carried by discrete excitations. The inverse spin Hall effect as a transduction mechanism to convert spin current into charge current raises the prospect of experimental investigations of such magnon shot noise. Spin Seebeck effect measurements have demonstrated the electrical detection of thermally driven magnon currents and have been suggested as an avenue for accessing spin current fluctuations. Using spin Seebeck structures made from yttrium iron garnet on gadolinium gallium garnet, we demonstrate the technical challenges inherent in such noise measurements. While there is a small increase in voltage noise in the inverse spin Hall detector at low temperatures associated with adding a magnetic field, the dependence on field orientation implies that this is not due to magnon shot noise. We describe theoretical predictions for the expected magnitude of magnon shot noise, highlighting ambiguities that exist. Further, we show that magnon shot noise detection through the standard inverse spin Hall approach is likely impossible due to geometric factors. Implications for future attempts to measure magnon shot noise are discussed.

关键词： Spin Seebeck effect Spin current Magnetic insulators Noise measurements

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Impact of fabrication methods on binder distribution and charge transport in composite cathodes of all-solid-state batteries

材料展望（英文）

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材料展望（英文） 2023年第4期 121-129页

作者： Benjamin Emley Chaoshan Wu Lihong Zhao Qing Ai Yanliang Liang Zhaoyang Chen Liqun Guo Tanguy Terlier Jun Lou Zheng Fan Yan Yao Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston University of Houston4726 Calhoun RdHoustonTX 77204United States of America Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston University of Houston4726 Calhoun RdHoustonTX 77204United States of America Department of Electrical and Computer Engineering University of Houston4726 Calhoun RdHoustonTX 77204United States of America Department of Materials Science and Nano Engineering Rice University6100 Main StreetHoustonTX 77005United States of America SIMS Laboratory Shared Equipment AuthorityRice UniversityHoustonTX 77005United States of America Department of Engineering Technology University of HoustonHoustonTX 77204United States of America

The manufacturing process of all-solid-state batteries necessitates the use of polymer ***,these binders,being ionic insulators by nature,can adversely affect charge transport within composite cathodes,thereby impacting the rate performance of the *** this work,we aim to investigate the impact of fabrication methods,specifically the solvent-free dry process versus the slurry-cast wet process,on binder distribution and charge transport in composite cathodes of solid-state *** the dry process,the binder forms a fibrous network,while the wet process results in binder coverage on the surface of cathode active *** difference in microstructure leads to a notable 20-fold increase in ionic conductivity in the dry-processed ***,the cells processed via the dry method exhibit higher capacity retention of 89％and 83％at C/3 and C/2 rates,respectively,in comparison to 68％and 58％for the wet-processed cells at the same *** findings provide valuable insights into the influence of fabrication methods on binder distribution and charge transport,contributing to a better understanding of the binder's role in manufacturing of all-solid-state batteries.

关键词： solid-state battery solvent-free dry process polymer binder lithium thiophosphate electrolyte

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Polarization switching in ferroelectric HfO2 from first-principles lattice mode analysis

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Physical Review B 2025年第13期111卷 134106-134106页

作者： Yubo Qi Sobhit Singh Karin M. Rabe Department of Physics University of Alabama at Birmingham Birmingham Alabama 35294 USA Department of Mechanical Engineering University of Rochester Rochester New York 14627 USA Materials Science Program University of Rochester Rochester New York 14627 USA Department of Physics and Astronomy Rutgers University Piscataway New Jersey 08854 USA

In this paper, we introduce a first-principles-based lattice mode analysis method to investigate the competition between different polarization switching paths in HfO2. Because the stability of the polar orthorhombic Pca21 phase of HfO2 arises from a trilinear coupling, polarization switching requires the flipping of not only the polar Γ15Z mode, but also at least one zone-boundary antipolar mode. This means that each polarization state has multiple variants, leading to multiple possible switching paths connecting up- and down-polarized states, which can be systemically enumerated within this framework for efficient identification of the optimal switching path. Our lattice mode analysis also explains why the activation energy of propagation of the most widely studied domain-wall structure in HfO2, which requires the reversal of the X2− mode, is much larger than that of propagation of domain-wall structures with a uniform sign for the X2− mode. This approach deepens our understanding of distinctive properties of ferroelectric HfO2 related to polarization switching and domain-wall motion, including sluggish domain-wall motion, robust ferroelectricity in thin films, and the observation that the antipolar Pbca phase can hardly be transformed to the ferroelectric Pca21 phase by an electric field. Our mode analysis method can be more generally applied to any improper or hybrid improper ferroelectric, in which polarization switching requires changes of nonpolar distortions, for systematic and efficient prediction of optimal switching paths and estimation of coercive fields.

关键词： Ferroelectricity

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Large negative magnetoresistance in the off-stoichiometric topological semimetal PrSbxTe2−x

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Physical Review B 2025年第2期111卷 024421-024421页

作者： Gokul Acharya Krishna Pandey M. M. Sharma Jian Wang Santosh Karki Chhetri Md Rafique Un Nabi Dinesh Upreti Rabindra Basnet Josh Sakon Department of Physics University of Arkansas Fayetteville Arkansas 72701 USA Materials Science and Engineering Program Institute for Nanoscience and Engineering University of Arkansas Fayetteville Arkansas 72701 USA Department of Chemistry and Biochemistry Wichita State University Wichita Kansas 67260 USA Department of Chemistry & Physics University of Arkansas at Pine Bluff Pine Bluff Arkansas 71603 USA Department of Chemistry and Biochemistry University of Arkansas Fayetteville Arkansas 72701 USA

Magnetic topological materials LnSbTe (Ln = lanthanide) have attracted intensive attention because of the presence of interplay between magnetism, topological, and electron correlations depending on the choices of magnetic Ln elements. Varying Sb and Te composition is an efficient approach to control structural, magnetic, and electronic properties. Here, we report on the composition-dependent properties in PrSbxTe2−x. We identified the tetragonal-to-orthorhombic structure transitions in this material system and very large negative magnetoresistance in the x=0.3 composition, which might be ascribed to the coupling between magnetism and transport. Such unusual magnetotransport enables PrSbxTe2−x topological materials as a promising platform for device applications.

关键词： Magnetoresistance

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Large-Scale Distributed Multidisciplinary Design Optimization of the NASA Lift-Plus-Cruise Air Taxi Concept

Large-Scale Distributed Multidisciplinary Design Optimizatio...

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AIAA science and Technology Forum and Exposition, AIAA SciTech Forum 2025

作者： van Schie, Sebastiaan P. C. Ruh, Marius L. Fletcher, Andrew Warner, Michael Sperry, Mark Scotzniovsky, Luca Orndorff, Nicholas C. Xiang, Ru Yan, Jiayao Zhao, Han Krokowski, Joshua J. Chen, J.S. Sarojini, Darshan Gill, Hyunjune Lee, Seongkyu Tagg, Andrew Anderson, Ryan Green, Eric Joseph, Cibin Ning, Andrew Cheng, Zeyu Cao, Zhi Mi, Chunting Guibert, Alexandre T. R. Cronk, Ashley Kim, H. Alicia Meng, Y. Shirley Silva, Christopher Hwang, John T. University of California San Diego 9500 Gilman Dr La Jolla CA92093 United States Department of Mechanical and Aerospace Engineering University of California San Diego 9500 Gilman Dr La Jolla CA92093 United States Department of Structural Engineering University of California San Diego 9500 Gilman Dr La Jolla CA92093 United States Aerospace and Ocean Engineering Department Virginia Tech 1600 Innovation Dr BlacksburgVA24060 United States Department of Mechanical and Aerospace Engineering University of California Davis 1 Shields Avenue DavisCA95616 United States Mechanical Engineering Brigham Young University ProvoUT84602 United States Department of Electrical & Computer Engineering San Diego State University 5500 Campanile Dr San Diego92182 United States Structural Engineering Department University of California San Diego 9500 Gilman Dr La Jolla CA92093 United States Materials Science & Engineering Program University of California San Diego 9500 Gilman Dr La Jolla CA92093 United States Pritzker School of Molecular Engineering The University of Chicago ChicagoIL60607 United States NASA Ames Research Center Moffett FieldCA94035 United States

ISBN: (数字)9781624107238

ISBN: (纸本)9781624107238

Large-scale gradient-based Multidisciplinary Design Optimization (MDO) can aid in the exploration of high-dimensional design spaces for novel air vehicle concepts, thereby leading to more efficient and economic designs. This paper builds on past works where we demonstrated large-scale physics-based MDO capabilities and applied these to NASA’s lift-plus-cruise electric air taxi concept. We extend this comprehensive mid-fidelity system-level optimization problem with high(er)-fidelity subsystem-level optimizations of various aircraft systems and mission phases, with the aim of further enhancing the accuracy and scope of the aforementioned system-level optimization problem: 1) Power minimization during the transition mission phase;2) Electrical powertrain topology optimization;3) Cell chemistry modeling and thermomechanical battery pack topology optimization;4) Shell-based coupled aero-elastic wing structure optimization. An Analytical Target Cascading-like distributed MDO architecture allows us to couple the system- and subsystem-level optimizations in order to arrive at a consistent and feasible design. We find that the system-level design is most heavily impacted by the reduced battery pack-level energy densities that stem from power peaks in the mission profile. These power peaks seem to result from the inefficient lift rotor blade designs that are needed to satisfy noise constraints. We draw conclusions based on trends in our results and give recommendations for future MDO studies of electrical air taxi vehicle concepts. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Shape optimization

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Fabrication, Characterization, and Electromechanical Reliability of Stretchable Circuitry for Health Monitoring Systems

Fabrication, Characterization, and Electromechanical Reliabi...

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Electronic Components and Technology Conference (ECTC)

作者： Behnam Garakani K. Udara S. Somarathna Riadh Al-Haidari Firas W Alshatnavi Detlef-Matthias Smilgies Mark D Poliks Materials Science and Engineering Program Binghamton University Binghamton USA Department of System Science and Industrial Engineering Binghamton University Binghamton USA Department of System Science and Engineering Binghamton University Binghamton USA

In this study, commercially available stretchable hybrid conductors including silver flakes in an elastomeric matrix were screen printed on thermoplastic polyurethane (TPU) followed by encapsulation via the stretchable dielectric. Test vehicles include straight and serpentine lines with various thicknesses and wavelengths, respectively. Metrology was also performed to assess line thickness, width, and variability. The modular force stage (MFS) was used to characterize the initiation and propagation of microcracks. The results of the uniaxial tensile test showed that increasing the strain amplitude resulted in an increase in the electrical resistance and the rate of damage accumulation in the serpentine traces was lower than that of the straight traces. Additionally, the serpentine trace with the highest ratio of meander arm length to curvature remained conductive up to a strain amplitude of 150%. A systematic increase in electrical resistance from cycle to cycle was observed when the conductor was subjected to a strain amplitude of 10% for 1000 stretching cycles. The effect of processing conditions as well as test conditions will be discussed in detail.

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Realization of linear magnetoelectric effect in the Dirac magnon system Cu3TeO6

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Physical Review B 2023年第21期107卷 214416-214416页

作者： Yongsen Tang Lin Lin Guanzhong Zhou Wenjing Zhai Lin Huang Junhu Zhang Shuhan Zheng Meifeng Liu Zhibo Yan Xiangping Jiang Xing'ao Li Jun-Ming Liu School of Science Nanjing University of Posts and Telecommunications Nanjing 210023 China Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China Department of Applied Physics College of Science Nanjing Forestry University Nanjing 210037 China Institute for Advanced Materials Hubei Normal University Huangshi 435002 China School of Materials Science and Engineering Jingdezhen Ceramic Institute Jingdezhen 333403 China

The three-dimensional antiferromagnet Cu3TeO6 has recently drawn significant attention due to the coexistence of Dirac and triply degenerated magnons. Herein, we report that Cu3TeO6, with cubic symmetry, exhibits novel spin-driven ferroelectric polarization (P) with a strong linear magnetoelectric (ME) coupling effect by comprehensive measurements in magnetization and electric polarization. The magnetic field (H)-induced polarization along x-, y-, and z-axes emerges below TN∼61K, indicative of intrinsic coupling between magnetism and ferroelectricity in this cubic lattice. Our results reveal nine nonvanished components of a ME tensor, while only the Px (H//z), Py (H//x), and Pz (H//y) components display a remarkable linear response to H. In particular, we observe six ME states—namely, (±Px,±Mz), (±Py,±Mx), and (±Pz,±My)—that can be generated by applying an external magnetic field in a specific direction, and thus makes Cu3TeO6 a very appealing prototype in multifunctional applications. Our results point toward Cu3TeO6 as a new, linear ME material and may pave a way to exploring the rich ME response in the presence of a Dirac magnon in a highly symmetric crystal structure.

关键词： Antiferroelectricity Electric polarization Ferroelectricity Magnetoelectric effect Single crystal materials

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