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Interatomic Coulombic decay in lithium-doped large helium nanodroplets induced by photoelectron impact excitation.
Rep Prog Phys
January 2025
Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, Aarhus, Midtjylland, 8000, DENMARK.
Irradiation of condensed matter with ionizing radiation generally causes direct photoionization as well as secondary processes that often dominate the ionization dynamics. Here, large helium (He) nanodroplets with radius ≳ 40 nm doped with lithium (Li) atoms are irradiated with extreme ultraviolet (XUV) photons of energy hν ≥ 44.4 eV and indirect ionization of the Li dopants is observed in addition to direct photoionization of the He droplets.
View Article and Find Full Text PDFImproved porosity promotes reendothelialization and smooth muscle remodeling in decellularized tissue-engineered vascular grafts.
Mater Today Bio
February 2025
Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, China.
Decellularized tissue-engineered vascular grafts (dTEVGs) exhibit superior biocompatibility, anti-infection properties and repair potential, contributing to better patency and making them a more ideal choice for arteriovenous grafts (AVGs) in hemodialysis compared to chemically synthesized grafts. However, the unsatisfactory reendothelialization and smooth muscle remodeling of current dTEVGs limit their advantages. In this study, we investigated the use of elastase to improve the porosity of elastic fiber layers in dTEVGs, aiming to promote cell infiltration and achieve superior reendothelialization and smooth muscle remodeling.
View Article and Find Full Text PDFHigh resolution Brillouin spectroscopy of the surface acoustic waves in SbTe van der Waals single crystals.
Sci Rep
January 2025
ISQI, Faculty of Physics, Adam Mickiewicz University in Poznań, Poznań, Poland.
High-resolution Brillouin spectroscopy was employed to investigate the anisotropy in surface wave velocities within a bulk single crystal of SbTe, a well-known layered van der Waals material. By leveraging the bulk elastic constants derived from various simulation methods, we were able to theoretically calculate the distribution of surface acoustic phonon velocities on the cleavage plane of the material. Upon analyzing multiple simulation results, it became evident that the most significant discrepancies arose in the calculations of the elastic constant c, with values ranging from 48 to 98 GPa.
View Article and Find Full Text PDFA composite hydrogel of porous gold nanorods and gelatin: Nanoscale structure and rheomechanical properties.
J Chem Phys
January 2025
Soft Matter and Nanomaterials Laboratory, Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India.
Article Synopsis
- Incorporating nanomaterials into hydrogels allows for the creation of customizable materials with adjustable properties based on their nanoscale structures.
- This study explores the relationship between the structural arrangement and properties of a composite hydrogel made from thermoresponsive polymer, gelatin, and antimicrobial light-responsive gold nanorods (PAuNRs).
- Findings indicate that the addition of PAuNRs leads to a softer hydrogel with reduced elasticity, which can be tailored for specific biomedical applications like tissue engineering and drug delivery.
Final CONUS Results on Coherent Elastic Neutrino-Nucleus Scattering at the Brokdorf Reactor.
Phys Rev Lett
December 2024
PreussenElektra GmbH, Kernkraftwerk Brokdorf GmbH & Co. oHG, Osterende, 25576 Brokdorf, Germany.
The CONUS experiment studies coherent elastic neutrino-nucleus scattering in four 1 kg germanium spectrometers. Low ionization energy thresholds of 210 eV were achieved. The detectors were operated inside an optimized shield at the Brokdorf nuclear power plant which provided a reactor antineutrino flux of up to 2.
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