Article
Chemistry, Physical
C. Echevarria-Bonet, J. L. Garrido-Alvarez, D. Martinez-Blanco, P. Gorria, M. H. Sorby, M. D. Riktor, J. A. Blanco, B. C. Hauback
Summary: High-resolution synchrotron radiation X-ray powder diffraction was used to study the structural characterization of half-Heusler alloys. The unit cell parameter was found to be dependent on the atomic radii of the alloy compositions. The site occupation of atomic species exhibited similar trends to previous literature. The study also explored the implications of anharmonicity on the thermal conductivity of these half-Heusler compounds at room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Computer Science, Interdisciplinary Applications
Bara Kim, Jeongsim Kim, Ole Bueker
Summary: The study focuses on a non-preemptive priority M/M/m queue with two customer classes and multiple vacations, deriving the vector probability generating function for the stationary distribution of the number of customers in the queue for each class. Exact expressions for the first two moments of the number of customers in the queue for each class are obtained. Additionally, an equilibrium strategy for customers and the optimal priority fee associated with social cost minimization in an unobservable M/M/m queue with two priority classes and multiple vacations are investigated as an application.
COMPUTERS & INDUSTRIAL ENGINEERING
(2021)
Article
Chemistry, Physical
Chisato Nishikawa, Ryosuke Nishikubo, Fumitaka Ishiwari, Akinori Saeki
Summary: This paper reports the development of solution-processed solar cells composed of less toxic earth-abundant elements. By synthesizing metal (M)-(Bi/Sb)-I photoactive materials, potential candidates with superior performance composed of ternary, quaternary, and quinary elements were obtained. Among them, the Ag-Cs-Bi-Sb-I alloy exhibited a higher power conversion efficiency.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Kumari Preety, Anup K. Prasad, Atul K. Varma, Hesham El-Askary
Summary: Publicly available digital elevation models have greatly influenced the quantification of landscape characteristics. This study examines the accuracy of six major public domain satellite-derived DEMs and finds that applying DGPS correction can improve accuracy significantly.
Article
Mathematics
Faisal Mehmood, Fu-Gui Shi
Summary: This paper discusses M-hazy vector spaces and related concepts, studies some fundamental properties and derives important results, ultimately proving that M-fuzzifying convex spaces are induced by a subspace of M-hazy vector space.
Article
Chemistry, Physical
Yin-Feng Wang, Jiangen Huang, Zhi-Jun Wang, Xue-Xia Liu, Jia Li, Zhi-Ru Li
Summary: A DFT study was conducted to investigate the nonlinear optics responses of stable superalkali-alkalide ion pairs in alkalide solutions. The study found a clear dependence of the response on the alkali metal atomic number, with a 1 to 3 orders of magnitude improvement in the static and dynamic first hyperpolarizabilities as the atomic number increases.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Mathematics, Applied
Saroja Kumar Singh, Gabriel M. B. Cruz, Frederico R. B. Cruz
Summary: This article presents a novel approach for detecting change points in the service rate of an M/M/1/m queue by detecting a change in the probability distribution of a stochastic process. It proposes a likelihood function constructed based on the observed number of customers left in the system at departures and derives Bayesian estimators using this function. The proposed methods are evaluated through extensive Monte Carlo simulations, and the results demonstrate their effectiveness in detecting change points in service rates.
APPLIED MATHEMATICS AND COMPUTATION
(2024)
Article
Business
Anita Ciunova-Shuleska, Nikolina Palamidovska-Sterjadovska, Jana Prodanova
Summary: Over the past decade, constant innovation in the banking industry has transformed mobile banking into a channel that distinguishes banks' capabilities, with cognitive and affective aspects of the mobile banking experience influencing customers' intentions. This study provides precise recommendations on vital communication with customers and valuable insights on the simultaneous effects of central and peripheral route processing.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Crystallography
Edwin C. C. Constable, Catherine E. E. Housecroft
Summary: [M(bpy)(3)](q)(+) cations are coordination entities with chelating bidentate N,N'-donor ligands, exhibiting delta or lambda enantiomers. The crystal supramolecular chemistry of [M(bpy)(3)](q)(+) cations is mainly controlled by cation-anion interactions and weaker non-covalent interactions. Analysis of [M(bpy)(3)](q)(+) salts in the Cambridge Structural Database (CSD) reveals a common motif of homochiral cation sheets forming cavities for anion accommodation. A common motif identified is a hexagon of six cations with anions either in the center or lying above and/or below the centroid.
Article
Chemistry, Multidisciplinary
Emi Ito, Shinjiro Takano, Toshikazu Nakamura, Tatsuya Tsukuda
Summary: Targeted syntheses of MM ' Au-36(PET)(24) were achieved through hydride-mediated fusion reactions, resulting in bi-icosahedral MM ' Au-21 cores composed of M@Au-12 and M '@Au-12 superatoms. Counterintuitive results were explained by a bent bonding model based on tilted bonding interaction between the superatomic orbitals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Plant Sciences
Scott D. Anderson, Cynthia A. Gleason
Summary: Root-knot nematodes, especially Meloidogyne chitwoodi, pose a significant threat to potato production in the Northwestern region of the USA. Recently, two unfamiliar Meloidogyne species, M. fallax and M. minor, were discovered on golf turfgrasses, raising concerns about the potential infestation of potato fields. To address this issue, a molecular beacon real-time PCR assay was developed to accurately detect and differentiate M. chitwoodi, M. fallax, and M. minor from nematode extracts.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Immunology
Deepshikha Verma, Edward D. Chan, Diane J. Ordway
Summary: Immunity against different Mycobacteria species targeting the lung requires distinct pulmonary immune responses for bacterial clearance. Parameters of acquired and regulatory immune responses differ quantitatively and qualitatively from immunity during infection with Mycobacteria species. This discussion focuses on the potential implications of acquired and regulatory immune responses in both animal and human studies, as well as future directions for treating Mycobacteria diseases.
IMMUNOLOGICAL REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Guohai Deng, Yan Lu, Tony Stueker, Sebastian Riedel
Summary: Pd and Pt atoms react with NF3 to form N-coordination M(NF3) complexes in solid neon and argon matrices. Upon blue LED light irradiation, the M(NF3) complexes isomerize to more stable FNMF2 isomers by experiencing fluorine migration. These products are characterized using infrared absorption spectroscopy and theoretical frequency calculations with isotopic substitutions. The electronic structure analysis shows that the bonding between metal and NF3 involves s donation from NF3's HOMO to the empty metal d(z)(2) orbital and p back-donation from metal d(xz/yz) orbitals to NF3's LUMO, stabilizing the metal-ligand bond and destabilizing the ligand N-F bond. In FNMF2, the FN ligand is doubly bonded to the metal and has imido character.
Article
Computer Science, Information Systems
Randall Dougherty, R. Daniel Mauldin, Mark Tiefenbruck
Summary: This paper presents methods for calculating the distance between a Boolean polynomial and lower-degree polynomials. The methods provide verifiable certificates for the lower and upper bounds of this distance. By applying these methods to different polynomial lists, the paper shows that RM(4, 8) has a covering radius of 26 in RM(5, 8), and the covering radius of RM(5, 9) in RM(6, 9) is between 28 and 32 inclusive. The paper also improves the known upper bounds on the distance from 2-resilient polynomials to RM(m - 4, m) by applying the methods to various polynomials in the literature.
IEEE TRANSACTIONS ON INFORMATION THEORY
(2022)
Article
Chemistry, Multidisciplinary
Matthew J. Evans, George H. Iliffe, Samuel E. Neale, Claire L. McMullin, J. Robin Fulton, Mathew D. Anker, Martyn P. Coles
Summary: The corresponding Al(mu-O)M complexes were isolated by the reaction of compounds containing Al-Mg and Al-Zn bonds with N2O. Electronic structure analysis revealed mainly ionic Al-O and O-M bonds in these complexes, featuring an anionic mu-oxo centre. The reaction with CO2 confirmed that these species correspond to the proposed intermediates in the formation of mu-carbonate compounds.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Markus Ring, David Weber, Patrick Haiber, Fabian Pauly, Peter Nielaba, Elke Scheer
Article
Chemistry, Multidisciplinary
Bohdan Lenyk, Volker Schoeps, Johannes Boneberg, Mikhail Kabdulov, Thomas Huhn, Elke Scheer, Andreas Offenhaeusser, Dirk Mayer
Article
Physics, Multidisciplinary
Fan Yang, Felicitas Hellbach, Felix Rochau, Wolfgang Belzig, Eva M. Weig, Gianluca Rastelli, Elke Scheer
Summary: The study investigates the phenomenon of persistent response in ultrastrongly driven membrane resonators both experimentally and theoretically, revealing the underlying mechanism through advanced optical interferometry. It suggests that this state is related to the nonlinear interaction between higher-order flexural modes and higher-order overtones of the driven mode, proposing a stability diagram for the different vibrational states the membrane can adopt.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Fan Yang, Mengqi Fu, Bojan Bosnjak, Robert H. Blick, Yuxuan Jiang, Elke Scheer
Summary: Researchers investigated the sideband spectra of a driven nonlinear mode with its eigenfrequency modulated at a low frequency. They found that this additional parametric modulation leads to prominent antiresonance line shapes in the sideband spectra, which can be controlled through the vibration state of the driven mode.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Hen Alpern, Morten Amundsen, Roman Hartmann, Nir Sukenik, Alfredo Spuri, Shira Yochelis, Thomas Prokscha, Vitaly Gutkin, Yonathan Anahory, Elke Scheer, Jacob Linder, Zaher Salman, Oded Millo, Yossi Paltiel, Angelo Di Bernardo
Summary: The study shows that adsorption of chiral molecules onto a conventional superconductor surface can significantly alter its diamagnetic Meissner response, presumably due to the induction of odd-frequency spin-triplet states by the molecules. These results suggest that a chiral molecule/superconductor system supports odd-frequency spin-triplet pairs and could serve as a simpler alternative for generating and manipulating unconventional superconducting states.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Gautam Mitra, Vincent Delmas, Hassan Al Sabea, Lucie Norel, Olivier Galangau, Stephane Rigaut, Jerome Cornil, Karine Costuas, Elke Scheer
Summary: In this study, the first systematic transport investigation of alkynyl-ended oligophenyl-diethynyl (OPA) single-molecule junctions with direct Au-C anchoring scheme at low temperature was reported using the mechanically controlled break junction technique. Different types of junctions for OPA molecules between Au electrodes with two to four phenyl rings were identified based on their conductance and stretching behavior. Inelastic electron tunneling spectroscopy confirmed the excitation of Au-C vibrational modes at low temperature, highlighting the potential for future functional molecule transport studies using alkynyl endgroups.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Gautam Mitra, Jonathan Z. Low, Sujun Wei, Karol R. Francisco, Michael Definer, Carmen Herrmann, Luis M. Campos, Elke Scheer
Summary: This study reports transport measurements on tunable single-molecule junctions of the organic perchlorotrityl radical molecule, contacted with gold electrodes at low temperature. A subset of junctions shows zero bias anomalies due to the Kondo effect and elevated magnetoresistance. Junctions without Kondo resonance reveal a stronger magnetoresistance. The amplitude of the magnetoresistance can be tuned by mechanically stretching the junction. The high magnetoresistance is attributed to an interference effect involving spin-dependent scattering at the metal-molecule interface, and the Kondo effect is assigned to the unpaired spin located in the center of the molecule in asymmetric junctions.
Review
Chemistry, Multidisciplinary
Maoning Wang, Tao Wang, Oluwafemi S. Ojambati, Thorin Jake Duffin, Keehoon Kang, Takhee Lee, Elke Scheer, Dong Xiang, Christian A. Nijhuis
Summary: This review presents the latest advancements in plasmonic resonances in molecular junctions, detailing the progress in plasmon excitation and coupling, and highlighting emerging experimental approaches to unravel the mechanisms of light-matter interactions at the molecular scale. The potential of these plasmonic-electronic hybrid systems in various future applications is also discussed.
NATURE REVIEWS CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
E. Gumus, D. Majidi, D. Nikolic, P. Raif, B. Karimi, J. T. Peltonen, E. Scheer, J. P. Pekola, H. Courtois, W. Belzig, C. B. Winkelmann
Summary: Josephson junctions play a central role in superconducting quantum technology, and irreversibility arises from sudden slips of the quantum phase difference across the junction. By detecting the instantaneous heat release caused by a phase slip, this study provides insights into the ubiquity of dissipation in quantum devices, particularly in superconducting quantum sensors and qubits. This advancement in experimental quantum thermodynamics allows for the observation of heat in elementary quantum processes.
Article
Chemistry, Physical
Mani Lokamani, Filip Kilibarda, Florian Guenther, Jeffrey Kelling, Alexander Strobel, Peter Zahn, Guido Juckeland, Kurt V. Gothelf, Elke Scheer, Sibylle Gemming, Artur Erbe
Summary: The current-voltage characteristics of a single-molecule junction depend on the electronic coupling between the electrodes and the molecule's transport channels. This coupling, known as Gamma, is influenced by the choice of anchoring groups and their positions on the tip facets as well as the tip-tip separation. In this study, experiments on a specific molecule, N,N'-bis(5-ethynylbenzenethiol-salicylidene)ethylenediamine, using mechanically controllable break junction, reveal the stretch evolution of Gamma with increasing tip-tip separation. A dynamic simulation approach successfully models this stretch evolution and establishes a connection to the microscopic structure of the single-molecule junction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Fan Yang, Reimar Waitz, Mengqi Fu, Elke Scheer
Summary: We propose a free and constrained fitting procedure to determine the intrinsic response of nanomechanical systems subjected to noise and other environmental influences. The free fitting procedure allows us to separate the intrinsic vibration properties from the system response by analyzing the measured frequency response of amorphous silicon nitride nanomembranes at different pressures. The constrained fitting procedure, which includes additional mathematical relationships between fit parameters, can be used to validate physical models for excitation, fluctuations, and damping.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Multidisciplinary
Sergii Snegir, Yannick J. Dappe, Dmytro Sysoiev, Thomas Huhn, Elke Scheer
Summary: This study investigates the structure and properties of a self-assembled monolayer on highly oriented pyrolytic graphite using scanning tunneling microscopy. The results show that the triazatriangulenium cations form hexagonally packed structures driven by the interaction with the graphite lattice. The monolayer consists of TATA(+) with and without BF4- counterions. The cationic TATA(+) exhibits a higher appearance compared to the neutral TATA-BF4.
Article
Materials Science, Multidisciplinary
Martin W. Prestel, Marcel Strohmeier, Wolfgang Belzig, Elke Scheer
Summary: Measurements of shot noise in atomic contacts of ferromagnets and paramagnets fabricated using the controlled break-junction technique reveal different noise characteristics. Ferromagnetic contacts show reduced noise compared to expectations, while paramagnetic contacts exhibit noise levels above but close to the threshold.
Article
Chemistry, Physical
S. Snegir, Y. J. Dappe, D. Sysoiev, O. Pluchery, T. Huhn, E. Scheer
Summary: The study explores the formation of SAMs of a TATA platform on Au(111) through scanning tunneling microscopy (STM), providing insights into the localization of BF4 counterions and the stability of TATA-BF4 physisorbed on the surface influenced by the gold lattice and electric field of the STM tip.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Tuhin Shuvra Basu, Simon Diesch, Ryoma Hayakawa, Yutaka Wakayama, Elke Scheer
Summary: The study investigated the modified electronic structure and single-carrier transport of individual hybrid core-shell metal-semiconductor Au-ZnS quantum dots using a scanning tunnelling microscope. The evolution of energy structure and charge transport from the metallic building block core to the core-shell metal-semiconductor QDs was revealed. The findings highlight the potential for fabricating tailored metal-semiconductor QDs for single-electron devices.
