Article
Multidisciplinary Sciences
Nooshin M. Estakhri, Nasim Mohammadi Estakhri, Theodore B. Norris
Summary: This study develops a scattering model to investigate coherent backscattering cone formation in finite-sized and sparse random media with specific geometries. The results show that density, volume size, and other parameters affect the angular characteristics of the CBS cone, with consistent results compared to previous CBS studies.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Kevin Vynck, Romain Pacanowski, Adrian Agreda, Arthur Dufay, Xavier Granier, Philippe Lalanne
Summary: “Nanostructured materials have emerged as a promising approach for material appearance design, focusing on creating structural colors by wave interference. However, other important aspects of an object's visual appearance have been neglected. In this study, a multiscale modeling platform was developed to predict the visual effects of macroscopic objects covered by disordered optical metasurfaces. By utilizing nanoscale resonances and mesoscale interferences, unique visual effects were created at the macroscale. This framework opens up new possibilities in fine and applied visual arts.”
Article
Physics, Applied
A. Andriyash, Sh M. Ismailov, V. G. Kamenev, G. Kaplukov, A. N. Kondratev, P. Kubasov, S. E. Kuratov, D. B. Rogozkin, A. A. Tikhov, I. Tur, A. S. Shubin, S. A. Shubin, P. N. Yaroschuk
Summary: This study presents the experimental results of simultaneous probing of a shock-loaded layer of aluminum oxide particles using photon Doppler velocimetry (PDV) and coherent backscattering (CBS). The main characteristics of the particle cloud were recovered using theoretical modeling and it was found that the CBS method provides independent data on the spatial distribution of particles. The joint application of PDV and CBS channels reduces the error compared to using PDV alone.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Byungjae Hwang, Taeseong Woo, Cheolwoo Ahn, Jung-Hoon Park
Summary: A new phase retrieval method is proposed and demonstrated for imaging through random media. While methods for recovering the Fourier amplitude through random distortions are well established, recovering the Fourier phase has been a more difficult problem and remains an active and important research area. The authors show that by ensemble averaging shift-corrected images, the Fourier phase of an object obscured by random distortions can be accurately retrieved up to the diffraction limit. The method is simple, fast, and does not require any optimization parameters or prior knowledge about the sample.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Nikolaj Roth, Andrew L. Goodwin
Summary: Hidden local order in disordered crystals has a strong impact on electronic and phononic band structures. Local correlations within hidden-order states can open band gaps and change material properties without long-range symmetry breaking. Understanding the importance of hidden order for material properties is crucial, as it offers a new mechanism for tuning material properties orthogonal to conventional structure/property relationships.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Lorenzo Rovigatti, John Russo, Flavio Romano, Michael Matthies, Lukas Kroc, Petr Sulc
Summary: In this study, we address the problems faced during the self-assembly of colloidal diamond crystals by using the SAT-assembly design framework. We demonstrate that the assembly of CD crystals only requires a binary mixture, and we test a promising DNA nanotechnology design using molecular dynamics simulations.
Article
Chemistry, Physical
Patrick Charbonneau, Marco Tarzia
Summary: The study on periodic microphases and disordered microphases in systems with competing short-range attractive and long-range repulsive interactions reveals their structural features and relationships. By exactly solving a SALR model on the Bethe lattice, the analysis reproduces key structural regimes of disordered microphases, such as particle and void cluster fluids as well as gelation.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Optics
Jincheng Cao, Yao Fu, Tianbo Wang, Helong Li, Huailiang Xu
Summary: Coherent Raman spectroscopy (CRS) with air-laser-based hybrid femtosecond/picosecond (fs/ps) pulses has shown promising potential for remote detection and surveillance of atmospheric species with high temporal and frequency resolution. By generating CRS spectra in a filamentary plasma grating, the intensities of coherent vibrational Raman lines can be efficiently enhanced for air molecules like N-2, O-2, and N-2(+), significantly extending the detection distance. The optimization of Raman lines is achieved by balancing the supercontinuum-induced vibrational coherence and air-laser-induced polarization of the air species.
Article
Materials Science, Multidisciplinary
Dominik M. Juraschek, Derek S. Wang, Prineha Narang
Summary: The study explores mechanisms for coherent excitation of magnons through sum-frequency components of the driving field, showing that efficiencies comparable or higher than established Raman techniques can be achieved using linearly polarized driving fields. Elliptical polarizations, on the other hand, produce weaker effects.
Article
Chemistry, Multidisciplinary
Eric J. Chan, Alexander G. Shtukenberg, Mark E. Tuckerman, Bart Kahr
Summary: Modeling complex structures from PXRD data and CSP in combination with molecular dynamics simulations can help identify the potential building blocks for polytypes possessing a twodimensional stacking fault structure, where centric H-bonded amide dimers are found to be the preferred H-bonding motif in benzamide II polytypes. The stacking faults are associated with conformational changes of phenyl rings, leading to a characteristic average structure containing the pertinent one-dimensional motifs.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Moshe Haim, David Dentelski, Aviad Frydman
Summary: We conducted an experimental study on bilayers of a disordered Ag metal layer and an indium-oxide film, which are close to the metal-insulator transition and the superconductor insulator transition, respectively. Our findings demonstrate that superconducting fluctuations within the indium-oxide film lead to insulating behavior rather than superconducting behavior. This is attributed to the suppression of density of states for quasiparticles in the proximitized regions due to the superconducting energy gap. Our results provide important insights into the nature of the insulating phase in the disorder-driven superconductor insulator transition.
Article
Physics, Multidisciplinary
Gregory D. Scholes
Summary: The study aims to find robust, large-scale coherent states that can serve as quantum resources. While large, complex systems tend to be fragile, emergent phenomena in classical systems tend to become more robust with scale. By investigating the complex quantum states produced by mapping interactions between qubits from structure in graphs, the research explores the potential inspiration for robust quantum networks from classical systems. Surprisingly, it is found that the emergent coherent state characteristic of mappings based on k-regular random graphs remains robust even with a substantial number of edge deletions.
Article
Materials Science, Ceramics
Sarmad Naim Katea, Gunnar Westin
Summary: A carbothermal nitridation route was used to produce nanophase ZrN1-xCx powder, starting with the preparation of nanosized ZrO2 particles and subsequent nitridation at high temperature. Various analytical techniques were employed to study the phase evolution of the samples.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ruipeng Mao, Daoping Xiang
Summary: The comprehensive properties of W-Ni3Al alloy were improved by introducing solid solution strengthening, disordered interface, and amorphous particle.
MATERIALS & DESIGN
(2023)
Article
Physics, Multidisciplinary
Mark Sutton, Julien R. M. Lhermitte, Francoise Ehrburger-Dolle, Frederic Livet
Summary: The alternative analysis of speckle x-ray diffraction peaks allows for strain (or flow) patterns to be inferred in amorphous or highly disordered materials by analyzing the systematic shifts of the speckles. This speckle tracking technique provides strain pattern measurements with accuracy similar to x-ray single crystal measurements.
PHYSICAL REVIEW RESEARCH
(2021)