Article
Multidisciplinary Sciences
Juan Diaz-Colunga, Nanxi Lu, Alicia Sanchez-Gorostiaga, Chang-Yu Chang, Helen S. Cai, Joshua E. Goldford, Mikhail Tikhonov, Alvaro Sanchez
Summary: Microbial communities frequently invade one another as a whole, a phenomenon known as community coalescence. This study provides direct evidence that collective invasions can lead to ecological coselection in microbial communities due to cross-feeding interactions at the community level.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Yonatan Vanunu, Jared M. Hotaling, Mike E. Le Pelley, Ben R. Newell
Summary: The study shows that initial attention in risky choice is driven by perceptual properties of the stimulus, while subsequent choices are more influenced by goal-driven factors. Options with the highest values and largest font sizes have the greatest impact on choice, while distractors may attract attention but do not affect actual decision-making.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Automation & Control Systems
T. Burr, S. Croft, A. Favalli, T. Krieger, B. Weaver
Summary: This paper reviews progress and presents new results for uncertainty quantification in nuclear safeguards, focusing on data-driven choices in SD estimation, the use of approximate Bayesian computation, computational calibration, revisions to the GUM, and critique of a Unified Theory of Measurement Errors and Uncertainties.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2021)
Article
Biology
Hajo Eicken, Finn Danielsen, Josephine-Mary Sam, Maryann Fidel, Noor Johnson, Michael K. Poulsen, Olivia A. Lee, Katie Spellman, Lisbeth Iversen, Peter Pulsifer, Martin Enghoff
Summary: Effective responses to rapid environmental change rely on observations to inform planning and decision-making. Comparing top-down, large-scale program driven approaches with bottom-up approaches initiated and steered at the community level can yield benefits, especially when connecting to Indigenous and local knowledge.
Article
Chemistry, Multidisciplinary
Gyurim Park, Dong Yeon Jeong, Seung Yeon Yu, Jong Jin Park, Jong H. Kim, Hoichang Yang, Youngmin You
Summary: This research demonstrates an advancement in the engineering of emitters with circularly polarized luminescence (CPL) properties. By utilizing a combined top-down and bottom-up strategy, the photoluminescence quantum yield and the luminescence dissymmetry factor were simultaneously amplified. The integration of chiral anions and the formation of helical assemblies of square-planar Pt(II) complexes played crucial roles in activating the CPL-active metal-metal-to-ligand charge transfer transition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Environmental Sciences
Andreas Froemelt, Arne Geschke, Thomas Wiedmann
Summary: This article discusses a highly detailed, spatially-resolved modelling framework that quantifies local activities and analyzes system-wide environmental and economic effects of planned interventions. Two case studies were conducted to examine production-based greenhouse gas emissions, consumption-based carbon footprints, and regional differences in Switzerland. The importance of providing regionalized information along economic value chains and the potential benefits and drawbacks of detailed scenarios were highlighted.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Margarita Brandt, Isabel Silva-Romero, David Fernandez-Garnica, Esteban Agudo-Adriani, Colleen B. Bove, John F. Bruno
Summary: This study found that nutrient availability, temperature, and herbivory all have impacts on macroalgal biomass. Excluding herbivores significantly increased macroalgal biomass, regardless of season or nutrient availability. However, the interactive effects of nutrients and herbivores differed between the cool and warm seasons. The results suggest that nutrient availability, rather than temperature, modulates the effects of herbivory.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Chemistry, Analytical
Aldo Renato Couto, Felipe Rebello Lourenco
Summary: This paper aims to estimate the measurement uncertainty of the quantification of acetylsalicylic acid (ASA) and salicylic acid (SA) in ASA samples using a stability-indicating multivariate spectrophotometric procedure. The measurement uncertainties were estimated using both top-down and bottom-up approaches, considering various sources of uncertainty. The developed methodology allows for the estimation of measurement uncertainty in multivariate spectrophotometric analysis.
MICROCHEMICAL JOURNAL
(2023)
Article
Psychology, Experimental
Stefanie I. Becker, Anna Grubert, Gernot Horstmann, Ulrich Ansorge
Summary: Previous research has identified three mechanisms that guide visual attention: bottom-up feature contrasts, top-down tuning, and the trial history. However, only few studies have simultaneously examined all three mechanisms. The present study critically evaluated the role of local feature contrasts, top-down knowledge, and trial history in pop-out search and found that early visual selection was mainly dominated by top-down knowledge and the trial history.
Article
Computer Science, Information Systems
Yingwei Pan, Yehao Li, Ting Yao, Tao Mei
Summary: This article discusses a technique for image captioning that utilizes a bottom-up and top-down attention mechanism to select and describe salient objects based on human subjective experience. The proposed approach uses the object sequence of interest as top-down signals to guide caption generation and incorporates an attention mechanism to integrate bottom-up and top-down signals. It also introduces a contrastive learning-based objective to ensure reliable and explainable cross-modal reasoning.
ACM TRANSACTIONS ON MULTIMEDIA COMPUTING COMMUNICATIONS AND APPLICATIONS
(2023)
Article
Computer Science, Information Systems
Meihui Li, Lingbing Peng, Tianfu Wu, Zhenming Peng
Summary: This paper proposes a bottom-up and top-down integration framework that combines short-term memory and long-term memory based trackers for online object tracking. Experimental results show that the method outperforms deep learning based trackers in a pre-training-free setting and the outputs from sparse coding are potentially useful for downstream tasks such as action recognition, multiple-object tracking, and object re-identification.
IEEE TRANSACTIONS ON MULTIMEDIA
(2021)
Article
Materials Science, Textiles
Zhoufeng Liu, Ning Huang, Zijing Guo, Chengli Gao, Chunlei Li
Summary: This article introduces a novel saliency detection method for fabric defect detection, which combines top-down and bottom-up saliency inference and two-way information. By utilizing deep learning techniques and feature fusion modules, this method can accurately localize fabric defects and achieves superior performance on various metrics compared to existing methods.
JOURNAL OF THE TEXTILE INSTITUTE
(2023)
Review
Multidisciplinary Sciences
Deryn O. LeDuke, Matilde Borio, Raymundo Miranda, Kay M. Tye
Summary: The functional interaction between bottom-up and top-down processing allows individuals to respond appropriately to the changing environment. These processing modalities can be represented using a dynamical systems model of the brain. The transition between attractor states depends on stability, depth, neuromodulatory tone, and plasticity changes. In disease states like anxiety or depression, understanding the relationship between these states is crucial. This study examines bottom-up and top-down processing from Marr's computational perspective to understand depressive and anxious disease states, using examples of amygdala and prefrontal cortex signaling.
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
(2023)
Article
Physics, Particles & Fields
Karol Kampf
Summary: This work systematically studies the higher-derivative corrections of the non-linear Sigma model, focusing on ordered amplitudes of flavor scalars in massless limit. New S-matrix methods are applied to construct amplitudes and analyze tree-level amplitudes, with possible theoretical simplifications based on specific relations. Additionally, the comparison with the Z-function connected with string theory is also discussed in the same context.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Biochemical Research Methods
Diogo B. Lima, Mathieu Dupre, Magalie Duchateau, Quentin Giai Gianetto, Martial Rey, Mariette Matondo, Julia Chamot-Rooke
Summary: The software can integrate data from multiple experiments and search engines, enabling rapid and easy visualization, validation, and comparison of proteoform sequences with high performance. The effectiveness of the method was demonstrated on a large-scale Escherichia coli dataset, where ProteoCombiner accurately shortlisted proteoforms identified by multiple search engines.
Article
Engineering, Environmental
Le Ke, Kai Zhao, Xiaoyu Yan, Xiaojuan Cao, Xiaoyu Wu, Chi Zhang, Tingting Luo, Tao Ding, Ning Yan
Summary: This study developed a green method to convert Cr-containing leather shavings into carbon catalysts. The carbon catalysts, co-doped with N and Cr, effectively catalyze the oxygen reduction reaction to yield H2O2 with high selectivity. Moreover, these catalysts can adsorb and decompose organic pollutants in wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Xujie Wang, Chi Zhang, Fangqi Chen, Junxiang Xiang, Shuangshuang Wang, Ze Liu, Tao Ding
Summary: Photons can be used as clean and abundant energy carriers for nanoactuation, but the response is often slow and energy efficiency is low. This study introduces the concept of robust nanoscale plasmonic dynamite using fullerene (C-60) incorporated nanoparticles, which can explode in nanoscale with the help of plasmon-enhanced photochemical and photothermal effects. This nanoexplosion generates powerful forces and high thermomechanical energy efficiency, making it a promising nanoengine for controlled mobilization of micro-objects on solid surfaces. Such nanoscale plasmonic dynamite can be utilized in various types of nanomachines, providing a powerful energy source for nanoactuation and nanomigration.
Article
Chemistry, Physical
Fangqi Chen, Tao Jiang, Baoxing Zhai, Yong Liu, Xiuxia Yang, Xujie Wang, Feng Ren, Dong Tu, Tao Ding
Summary: This study investigates the mechanoluminescence (ML) properties of a Kr+-irradiated single crystal of lithium niobium oxide (LiNbO3) and reveals that trapped electrons at oxygen vacancies transfer to the conduction band and combine with holes to emit photons under the piezopotentials of LiNbO3. This understanding provides guidance for the design of advanced ML materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Optics
Shuangshuang Wang, Tao Ding
Summary: Chiral plasmonic system has attracted significant interest due to its enhanced chiroptic activity. This study demonstrates a facile and controllable growth strategy for chiral ensembles of gold nanoparticles using continuous wave laser. The resulting nanotrimers and nanodimers show circular differential scattering and can be used for optical sensing of chiral molecules.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Fangqi Chen, Yong Liu, Tao Ding
Summary: Metallic nanoplasmonics is a key component for next-generation information technology due to its small size and fast speed. Achieving a highly tunable nanoplasmonic system in the solid state is crucial for optoelectronic devices, especially in the visible region. In this study, thermo-responsive nanoantennas were created by sandwiching vanadyl oxalate (VOC2O4) thin films between gold nanoparticles and gold film. The plasmon peak of the films exhibited a blueshift of up to 60 nm as the temperature increased, while the thickness of the VOC2O4 composite films remained almost unchanged. This reversible and optically modulated process shows potential for integrated nanoplasmonic and optoelectronic devices with a switching speed compatible with traditional systems.
PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Bethany R. R. Hood, Yovan de Coene, Afonso V. V. Torre Do Vale Froes, Claire F. F. Jones, Pierre Beaujean, Vincent Liegeois, Fraser MacMillan, Benoit Champagne, Koen Clays, John Fielden
Summary: Electrochemically switched 2(nd) order non-linear optical responses have been demonstrated for the first time in polyoxometalates (POMs), with an arylimido-derivative showing a leading combination of high on/off contrast (94 %), high visible transparency, and cyclability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Fangqi Chen, Jiacheng Yao, Xujie Wang, Shuangshuang Wang, Ze Liu, Tao Ding
Summary: Nonvolatile phase change materials have great potential in nanophotonic switches and memory devices. However, their performances deteriorate at thicknesses below 10 nm due to local deformation. In this study, we addressed this issue by photothermally modulating the refractive index of germanium antimony telluride (GST) in plasmonic nanogaps, achieving highly reversible optical switching at a rate of up to hundreds of kHz. We also demonstrated the modulation of waveguiding efficiency using GST-based photothermal modulation, providing a promising approach for integrated nanophotonic chips.
Article
Multidisciplinary Sciences
Fangfang Deng, Juntao Chen, Junxiang Xiang, Yong Li, Yan Qiao, Ze Liu, Tao Ding
Summary: Researchers have successfully achieved light-programmed control of bistate colloidal actuation using photothermal active plasmonic substrate, which helps to mimic and understand natural complex systems.
Article
Chemistry, Multidisciplinary
Huan Wang, Mahbod Morshedi, Mahesh S. Kodikara, Yovan de Coene, Koen Clays, Chi Zhang, Mark G. Humphrey
Summary: Metal-alkynyl donor/nitro acceptor-functionalized porphyrins are promising candidates for nonlinear optical (NLO) applications, exhibiting exceptional properties such as record quadratic optical nonlinearity, remarkable two-photon absorption, and outstanding three-photon absorption, as well as being the first porphyrins to exhibit four-photon absorption. The absorption peaks for two-, three-, and four-photon absorption correspond to multiples of linear absorption bands associated with porphyrin-localized pi*<-pi transitions and donor-porphyrin to porphyrin-acceptor charge transfer transitions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Siyu Chen, Pan Li, Chi Zhang, Wenkai Wu, Guoliang Zhou, Changjin Zhang, Shirui Weng, Tao Ding, De-Yin Wu, Liangbao Yang
Summary: Fabricating ultrasmall nanogaps for significant electromagnetic enhancement is a long-standing goal of SERS research. The quantum plasmonics limits the electromagnetic enhancement when the gap size decreases below the quantum tunneling regime. In this study, by sandwiching hexagonal boron nitride (h-BN) as a gap spacer in a NPoM structure, electron tunneling is effectively blocked, leading to layer-dependent SERS enhancement.
Article
Multidisciplinary Sciences
Xiaolin Lu, Xujie Wang, Yong Liu, Tao Ding
Summary: Polarization-directed oriented growth of platinum oxide/sulfide nanoparticles can lead to the formation of chiral nanostructures. These superstructures exhibit broadband optical activity and a high luminescence g-factor in the visible range, making them promising candidates for chiroptoelectronic devices.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Xiaolin Lu, Xujie Wang, Shuangshuang Wang, Tao Ding
Summary: Chirality is important in nature and researchers in various disciplines are interested in creating chiral matter. A method for producing different kinds of chiral metamaterials with high regularity and tailorability is still lacking. In this study, the authors introduce a polarization-directed growth method for spiral nanostructures using vector beams, which is simple and applicable to both plasmonic and dielectric materials. The obtained plasmonic chiral nanostructures show significant optical activity and can be used for sensing different chiral enantiomers.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jiacheng Yao, Hui Fang, Yong Li, Ze Liu, Hongxing Xu, Tao Ding
Summary: In this study, single-crystalline aluminum nanowires with high stability were fabricated using a superplastic nanomolding technique. These nanowires exhibit multimode waveguiding, efficient beam splitting based on polarization, and durable thermal optical modulation, making them suitable for nanophotonic routers, splitters, and information encryptors. This technique can also be extended to other metals, enhancing the development of functional nanophotonic devices and integrated optical chips.
Article
Nanoscience & Nanotechnology
Shuangshuang Wang, Huatian Hu, Xiaoze Liu, Tao Ding
Summary: Fano resonance resulting from the coupling of plasmon mode and Bragg modes is observed in Au nanoparticle on distributed Bragg reflectors (Au NPoDBRs), showing weak angular dependence. This interference involves the coupling of three modes: plasmon resonance of the nanoparticle, dispersive Bragg modes, and non-dispersive Bragg modes. It can be explained by the plasmonic coupling between dispersive Bragg modes and broad plasmon mode, as well as the strong coupling between narrowed plasmonic mode and non-dispersive Bragg mode. This Fano interference exhibits little dependence on the incidence angle but can be highly tunable with the top-layer thickness, making it suitable for novel nanophotonic devices with dispersion engineering.
Article
Materials Science, Multidisciplinary
Gavin S. Mohammad-Pour, Yovan de Coene, Meryl Wiratmo, Aditya Maan, Koen Clays, Artem E. Masunov, Kaitlyn E. Crawford
Summary: This study investigates the design, synthesis, and application of a new class of push-pull chromophores for non-linear electro-optic (EO) applications. The chromophores demonstrate a significant potential for improving non-linear EO systems and exhibit large hyperpolarizability values (beta), stability, and modifiable functional groups.
MATERIALS ADVANCES
(2022)
