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Deuterated Nanopolymers for Renal and Lymphatic Imaging via Quantitative Deuterium MRI.
Nano Lett
January 2025
NMR Signal Enhancement Group, Max Planck Institute for Multidisciplinary Sciences, 37077 Göttingen, Germany.
Deuterium (H) MRI is an emerging tool for noninvasive imaging. We explore the integration of H MRI with deuterated multifunctional nanopolymers for deuterated particle imaging (DPI). To this end, amine-terminated G5-polyamidoamine (PAMAM) dendrimers were labeled with deuterated acetyl surface groups, leading to highly H-loaded bioparticles, making them ideal for imaging studies.
View Article and Find Full Text PDFMeasuring high-efficiency perfect composite vortex beams with reflective metasurfaces in microwave band.
Nanophotonics
January 2025
Departments of Optics and General Physics, Francisk Skorina Gomel State University, Sovetskaya Str. 104, Gomel 246019, Belarus.
Optical vortex beams carrying orbit angular momentum have attracted significant attention recently. Perfect vortex beams, characterized by their topological charge-independent intensity profile, have important applications in enhancing communication capacity and optimizing particle manipulation. In this paper, metal-insulator-metal copper-coin type reflective metasurfaces are proposed to generate perfect composite vortex beams in X-band.
View Article and Find Full Text PDFRecommendations for reporting and evaluating proton therapy beyond dose and constant relative biological effectiveness.
Phys Imaging Radiat Oncol
January 2025
Center for Proton Therapy, Paul Scherrer Institute, Villigen PSI, Switzerland.
Background And Purpose: In proton therapy, a relative biological effectiveness (RBE) of 1.1 is used to convert proton dose into an equivalent photon dose. However, RBE varies with tissue type, fraction dose, and beam quality parameters beyond dose such as linear energy transfer (LET) raising concerns about increased local effectiveness and potential toxicity.
View Article and Find Full Text PDFCollective motion and its connection to the energy landscape in 2D soft crystals.
Soft Matter
January 2025
Physics Department, Wesleyan University, Middletown, CT 06459, USA.
We examine the collective motion in computational models of a two-dimensional dusty plasma crystal and a charged colloidal suspension as they approach their respective melting transitions. To unambiguously identify rearrangement events in the crystal, we map the trajectory of configurations from an equilibrium molecular dynamics simulation to the corresponding sequence of configurations of local potential energy minima ("inherent structures"). This inherent structure (IS) trajectory eliminates the ambiguity that arises from localized vibrational motion.
View Article and Find Full Text PDFInvestigation into Alzheimer's-related amyloid-β conformational transformations and stability influenced by green iron oxide nanoparticles (GIONP).
Int J Biol Macromol
January 2025
Biophysics Department, Faculty of Science, Cairo University, 12613 Giza, Egypt. Electronic address:
Alzheimer's disease (AD) is popularly believed to be triggered by the aggregation of amyloid beta 1-42 (Aβ - 42) peptides, eventually leading to neurodegeneration. Our study delves into the influential role played by Green Iron Oxide Nanoparticles (GIONP). GIONP are typically synthesized using a green chemistry approach, imposing curcumin as a biocompatible reducing and capping agent, leveraging its inherent antioxidant, anti-inflammatory, and neuroprotective attributes.
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