We show that driving optical phonons above a threshold fluence induces spatiotemporal orders, where material properties oscillate at an incommensurate wave vector q_{0} in space and at half the drive frequency in time. The order is robust against temperature on timescales much larger than the lifetime of the excited modes and can be accompanied by a static 2q_{0} modulation. We make predictions for time-resolved diffraction and provide estimates for candidate materials. Our results show the possibility of using THz waves in solids to realize tunable incommensurate orders on the nanoscale.
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http://dx.doi.org/10.1103/PhysRevLett.134.066902 | DOI Listing |
Water Res
March 2025
College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, Shaanxi, China. Electronic address:
Revealing the sources, composition and fate of riverine dissolved organic matter (DOM) is fundamental to understanding the biogeochemical cycles of aquatic ecosystems. This study aimed to reveal the impact of land uses and wastewater treatment plants (WWTPs) on riverine DOM. Spatiotemporal variations in molecular characteristics of riverine DOM in the river network containing 15 tributaries in the mainstream of upper Hanjiang River were studied.
View Article and Find Full Text PDFISME J
March 2025
Department of General Ecology, Institute of Zoology, University of Cologne, Zülpicher Str. 47b, Cologne (Köln) 50674, Germany.
Understanding spatio-temporal dynamics is essential for predicting how populations fluctuate over time and space. Theoretical models have highlighted the ecological complexity of spatio-temporal dynamics, which can lead to the emergence of complex patterns, including nonlinear dynamics and chaotic behavior, important mechanisms for maintaining of biodiversity. However, these dynamics are difficult to observe experimentally due to a lack of temporal and spatial resolution.
View Article and Find Full Text PDFEnviron Monit Assess
March 2025
The Everglades Foundation, 18001 Old Cutler Road, Suite 625, Palmetto Bay, FL, 33157, USA.
The Everglades Agricultural Area (EAA) in South Florida (USA) is a recognized source of total phosphorus (TP) that has impacted downstream oligotrophic Everglades marshes. Treatment wetlands, called stormwater treatment areas (STAs), were constructed and subsequently expanded to remediate EAA-derived TP, ideally yielding long-term outflow concentrations to the Everglades Protection Area (EvPA) of 13 µg/L TP or less. To date, TP-remediation has been insufficient relative to TP loads discharged from some EAA basins.
View Article and Find Full Text PDFBiofabrication
March 2025
Institute of Zoology Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, P.R.China, Chaoyang District, 100101, CHINA.
The growth and formation of tissues, such as skeletal muscle, involve a complex interplay of spatiotemporal events, including cell migration, orientation, proliferation, and differentiation. With the continuous advancement of in vitro construction techniques, many studies have contributed to skeletal muscle tissue engineering (STME). This review summarizes recent advances in the ordered construction of skeletal muscle tissues, and evaluates the impact of engineering strategies on cell behavior and maturation, including biomaterials, manufacturing methods and training means.
View Article and Find Full Text PDFFront Integr Neurosci
February 2025
Department of Engineering, Institute of Biomedical and Neural Engineering, Reykjavik University, Reykjavik, Iceland.
The phase slips are generally extracted from the EEG using Hilbert transforms but could also be extracted from the derivatives of EEG, providing additional information about the formation of cortical phase transitions. We examined this from the 30 s long, 256-channel resting state, eyes open EEG data of a 30-year-old male subject. The phase slip rates, PSR1 from EEG, PSR2 from the first-order derivative of EEG, and PSR3 from the second-order derivative of EEG, respectively, were extracted.
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