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We propose a framework that unifies the description of light transmission through three-dimensional amorphous dielectric materials that exhibit both localization and a photonic bandgap. We argue that direct, coherent reflection near and in the bandgap attenuates the generation of diffuse or localized photons. Using the self-consistent theory of localization and considering the density of states of photons, we can quantitatively describe the total transmission of light for all transport regimes: transparency, light diffusion, localization, and bandgap. Comparison with numerical simulations of light transport through hyperuniform networks supports our theoretical approach.
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http://dx.doi.org/10.1103/PhysRevLett.129.157402 | DOI Listing |
Pressure ulcer (PU) cause metabolic disorders and ischemia via prolonged pressure, leading to secondary infection, inflammation, and vascular neuropathy. However, existing therapies rely on microenvironment, HO, low repair efficiency, and lack efficient collaborative therapy. Herein, a confined multifunctional TiO/Pt nanozyme is developed via atomic layer deposition for PUs repair.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Institute of Chemistry of OrganoMetallic Compounds (ICCOM), National Research Council of Italy (CNR), Via G. Moruzzi 1, 56124 Pisa, Italy.
Mixed-halide perovskites of formula MAPb(BrI), where MA is methylammonium, are of great interest for optoelectronic applications (particularly high-efficiency solar cells) due to their finely tunable bandgap, which enables precise control over light absorption. However, their stability remains a critical challenge, notably due to reversible photoinduced halide segregation. Under continuous illumination, this process leads to the formation of Br- and I-rich domains, which lower device performance by introducing low-bandgap regions that trap charge carriers.
View Article and Find Full Text PDFChem Sci
August 2025
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Hung Hom Hong Kong China
The development of high-performance near-ultraviolet organic light-emitting diodes (NUV-OLEDs) remains challenging due to their intrinsic wide-bandgap characteristics. Therefore, this study fully exploits the weak electron-accepting characteristics of the PPI group, combined with its high photoluminescence quantum yield (PLQY) and excellent thermal stability. Through a precise molecular structure modulation strategy involving direct introduction of electron-donating diphenylamine groups into the side phenyl ring and systematic integration of donor/acceptor units with tailored electronic properties into the main backbone, effective control of excited-state characteristics and their spatial distribution was successfully achieved.
View Article and Find Full Text PDFLuminescence
September 2025
Department of Computational and Applied Mechanics, Federal University of Juiz de Fora, Juiz de Fora, Brazil.
Rare-earth ions (REIs), especially trivalent lanthanides (Ln ), are central to photonic technologies due to sharp intra-4f transitions, long lifetimes, and host-insensitive emission. However, modeling REIs remains challenging due to localized 4f orbitals, strong electron correlation, and multiplet structures. This review summarizes atomistic modeling strategies combining quantum chemistry and machine learning (ML).
View Article and Find Full Text PDFACS Nano
September 2025
School of Physics and Astronomy, Monash University, Clayton, VIC 3800, Australia.
Strong electron-hole interactions in a semimetal or narrow-gap semiconductor may drive a ground state of condensed excitons. Monolayer WTe has been proposed as a host material for such an exciton condensate, but the order parameter─the key signature of a macroscopic quantum-coherent condensate─has not been observed. Here, we use Fourier-transform scanning tunneling spectroscopy (FT-STS) to study quasiparticle interference (QPI) and periodic modulations of the local density of states (LDOS) in monolayer WTe.
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