Article
Chemistry, Multidisciplinary
David Winogradoff, Pin-Yi Li, Himanshu Joshi, Lauren Quednau, Christopher Maffeo, Aleksei Aksimentiev
Summary: The chemical structure of DNA has implications for self-organization and building functional nanostructures, with recent advances focusing on natural and synthetic chiral systems using DNA. The role of nucleic acid chirality in various situations, liquid crystal phases, and efforts to build chiral structures through DNA self-assembly are discussed. Current and proposed man-made nanostructures designed to probe or utilize DNA's chirality are also explored, from plasmonics to biosensing.
Review
Chemistry, Multidisciplinary
Sascha Jahnigen
Summary: Chirality is a phenomenon that appears in various forms, including molecular and structural chirality. The relationship between molecular chirality and the enantiomorphism of crystals is still an open question that can be addressed with chiroptical tools. Vibrational circular dichroism (VCD) is a chiral infrared spectroscopy that can provide information about both the molecular and intermolecular space. It has become the method of choice for determining absolute configurations and studying crystal forms and polymorphism.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Editorial Material
Chemistry, Multidisciplinary
Robert J. Macfarlane
Summary: Nanoparticle assembly allows for the synthesis of complex nanoscale structures, but further research and application will necessitate the development of new processing methods to control both micro- and macroscale structures.
Article
Chemistry, Multidisciplinary
Ondrej Jurcek, Nonappa, Elina Kalenius, Pia Jurcek, Juha M. Linnanto, Rakesh Puttreddy, Hennie Valkenier, Nikolay Houbenov, Michal Babiak, Miroslav Peterek, Anthony P. Davis, Radek Marek, Kari Rissanen
Summary: Constructing structurally complex architectures using unique ligands is a challenge in metallosupramolecular chemistry, but a superchiral Pd3L6 complex can be obtained via supramolecular transmetalation reactions. These complexes can self-organize into hexagonal microparticles in aqueous media, potentially leading to the development of novel metal-organic functional materials made of natural, abundant, and relatively inexpensive steroidal compounds.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Yuji Sunaba, Masaki Ide, Ryo Takei, Kyosuke Sakai, Christophe Pin, Keiji Sasaki
Summary: This study demonstrates the possibility of creating intensely focused optical fields on a single-nanometer scale using designed plasmonic nanostructures. The orbital and spin angular momenta of a Laguerre-Gaussian beam are transferred to localized plasmons and confined into a nanogap. This plasmonic nano-vortex field is expected to match the shape and angular momenta of molecular electron orbitals and spins.
Article
Materials Science, Multidisciplinary
Mohamed Shaat, Harold S. Park
Summary: There is significant interest in studying the functionality of odd elastic solids, which are a specific class of active matter that cannot be described by a free energy function. This paper proposes the coupling of non-symmetric elasticity with chiral, nonreciprocal elasticity as a means to achieve isotropic elastic solids exhibiting non-symmetric elasticity.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Sarita Songsermsawad, Phattananawee Nalaoh, Vinich Promarak, Adrian E. Flood
Summary: This study aims to find suitable cocrystals of baclofen to achieve separation of its enantiomers. After screening 20 potential coformers, only one diastereomeric cocrystal system between the enantiomers of baclofen and L-mandelic acid was found. Slurry crystallization experiments with a 12:1 water/acetic acid mixture resulted in a product with 95% enantiomeric purity.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Multidisciplinary Sciences
Andrei Zakharov, Daniel A. Beller
Summary: This study investigates the potential of shaping multistability and shape morphing in flexible crystalline membranes using glide mobility of dislocations. The results show that the relative and absolute stability of competing states strongly depend on control parameters, and demonstrate a broad design space for controllable and reconfigurable colloidal tube geometries.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Ruiheng Pan, Sheng Tao, Kai Wang, Zhi-Gang Yu
Summary: In this study, a joint experimental and theoretical research is conducted to investigate the circular dichroism (CD) and magnetic circular dichroism (MCD) of highly crystalline and solution-processable chiral lead halide perovskites. The experimental results show that the MCD strengths of the chiral perovskites can be remarkably enhanced with increasing fields up to +/- 1.6 T. The study is important in elucidating the microscopic origin of optical activities in chiral perovskites using magnetic fields as a tool.
CHEMISTRY OF MATERIALS
(2023)
Article
Multidisciplinary Sciences
S. L. Moore, C. J. Ciccarino, D. Halbertal, L. J. McGilly, N. R. Finney, K. Yao, Y. Shao, G. Ni, A. Sternbach, E. J. Telford, B. S. Kim, S. E. Rossi, K. Watanabe, T. Taniguchi, A. N. Pasupathy, C. R. Dean, J. Hone, P. J. Schuck, P. Narang, D. N. Basov
Summary: In this study, the lattice dynamics of twisted hexagonal boron nitride layers were investigated using nano-infrared spectroscopy, revealing local and stacking-dependent variations in optical phonon frequencies due to interaction with the graphite substrate. First-principles calculations showed a symmetry-breaking interaction with the underlying graphite in twisted hBN, leading to systematic variations in in-plane optical phonon frequencies among triangular domains and domain walls in the hBN moire superlattices.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Brandon Lu, Simon Vecchioni, Yoel P. Ohayon, Ruojie Sha, Karol Woloszyn, Bena Yang, Chengde Mao, Nadrian C. Seeman
Summary: It has been discovered that using noncanonical sticky ends in tensegrity triangle crystal structures can alter the self-assembly process, resulting in a left-handed superstructure and microtubule-like structure formation.
Article
Physics, Fluids & Plasmas
Carmine Anzivino, Rene van Roij, Marjolein Dijkstra
Summary: Using a grand-canonical Landau-de Gennes theory, this study investigates the local density of twist-bend and splay-bend nematic phases in colloidal suspensions of bent rods. The findings show periodic modulations of local density in the splay-bend phase, making it similar to a smectic phase rather than a nematic phase. In contrast, the twist-bend phase exhibits no spatial variation in local density, confirming it as a proper nematic phase. The predicted density modulations in splay-bend phases are consistent with recent simulations.
Article
Materials Science, Multidisciplinary
Lu Jiang, Velimir R. Radmilovi, Julian E. C. Sabisch, Liang Qi, Andrew M. Minor, Daryl C. Chrzan, Mark Asta
Summary: This study presents an experimental and theoretical investigation on twin nucleation in HCP metals, specifically identifying the {11(2) over bar1} twin nuclei in HCP rhenium originating from a <c+a> dislocation. The analysis rationalizes the favorability of dislocation-based nucleation mechanism and offers insights into design strategies for enhancing the balance between strength and ductility in HCP alloys.
Article
Chemistry, Multidisciplinary
Valeriy A. Luchnikov, Yukie Saito, Luc Delmotte, Joseph Dentzer, Emmanuel Denys, Vincent Malesys, Ludovic Josien, Laurent Simon, Simon Gree
Summary: Under Ar atmosphere with trace amounts of oxygen, graphitized hollow filaments are resistively heated to 1800-2400 degrees C, forming regular hexagonal arrays of microscopic pyramids consisting of soot nanoparticles on the surface. The height and width of these pyramids depend on the temperature, and they can function as field emission point sources.
Article
Nanoscience & Nanotechnology
Chang Liu, Yue Zhang, Qing-Yan Zhou, Yun-Kun Dai, Yun-Long Zhang, Yang-Xia, Jian Liu, Xu-Lei Sui, Da-Ming Gu, Zhen-Bo Wang
Summary: By incorporating polypyrrole carbon nanotubes between the cavities of 2D graphene, 3D-heterostructures ZMO@G-PNTs were designed, showing higher stability and rate capacity. Lithium-ion capacitors built with ZMO@G-PNTs as anode and activated carbon as cathode exhibited excellent energy density and cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Valentin A. Gorodtsov, Valentin G. Tkachenko, Dmitry S. Lisovenko
Summary: This study conducted theoretical and numerical analyses on the extreme values of Young's modulus for six and seven-constant tetragonal crystals based on experimental data, revealing their relationship with anisotropy coefficients and characteristics in different crystal structures.
MECHANICS OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mikhail A. Volkov, Valentin A. Gorodtsov, Egor P. Fadeev, Dmitry S. Lisovenko
Summary: The study shows that tubes with (110) crystal structure are more likely to exhibit auxetic properties, with some tubes having negative values of Poisson's ratios on their cross-sections.
JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES
(2021)
Article
Crystallography
Denis N. Karimov, Dmitry S. Lisovenko, Anna G. Ivanova, Vadim V. Grebenev, Pavel A. Popov, Natalya L. Sizova
Summary: Bulk c-oriented CeF3 single crystals were successfully grown using the vertical Bridgman technique in a fluorinating atmosphere. The anisotropy of mechanical, thermal, and electrophysical properties were studied for the first time, with maximum values observed in the [0001] direction. The Vickers and Berkovich microhardnesses for different crystallographic planes were investigated, showing higher values for Berkovich and a decrease with increasing load for the hardest plane.
Article
Crystallography
Valentin A. Gorodtsov, Dmitry S. Lisovenko
Summary: This study explores the extreme values of Young's modulus for rhombic crystals and reveals the differences in mechanical properties between different crystal types. Rhombic crystals exhibit significant variations in Young's modulus values, while cubic, tetragonal, and hexagonal crystals display greater rigidity. Furthermore, a classification scheme based on dimensionless parameters is presented for the Young's modulus of rhombic crystals.
Article
Mechanics
Mikhail A. Volkov, Aleksandr Demin, Valentin A. Gorodtsov, Dmitry S. Lisovenko
Summary: The issue of longitudinal tension in a two-layered plate with hexagonal and cubic crystals of different orientations is discussed, with analytical dependencies of effective properties obtained and the variability of these properties analyzed for different crystal combinations. Significant differences were found when one layer was auxetic, with the effective Young's modulus possibly exceeding that of the stiffer layer. The ratio of Young's moduli of crystals had a significant influence on the effective Poisson's ratio, with qualitative and quantitative correspondence found between analytical and numerical results.
COMPOSITE STRUCTURES
(2021)
Article
Physics, Condensed Matter
Valentin A. Gorodtsov, Mikhail A. Volkov, Dmitry S. Lisovenko
Summary: This study provides a theoretical analysis of out-of-plane tension of a thin rectangular two-layered plate of cubic crystals with the same orientation. The analysis reveals that the effective Young's modulus and effective Poisson's ratio of the plate behave differently depending on the ratios of various parameters.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Editorial Material
Archaeology
V. A. Gorodtsov
ROSSIISKAYA ARKHEOLOGIYA
(2021)
Article
Multidisciplinary Sciences
Mikhail A. Volkov, Valentin A. Gorodtsov, Dmitry S. Lisovenko
Summary: This study analyzed the longitudinal tension problem of two-layered tubes with walls made of tetragonal crystals. The effective Young's moduli and Poisson's ratios of the tubes were numerically calculated using experimental data on the elastic characteristics of such crystals. The study found that the effective elastic properties of two-layered tubes vary in cases of equal layer thickness, equal volume, and arbitrary thickness. The effective Young's modulus often exceeds the largest Young's modulus of a pair of layers, and the effective Poisson's ratio can be negative, even if the Poisson's ratios are positive in both layers. In other words, an auxetic of the two-layered tube may correspond to a pair of non-auxetics in two layers of this tube.
Article
Mechanics
I. A. Bryukhanov, M. A. Volkov, V. A. Gorodtsov, D. S. Lisovenko
Summary: The study explores the elastic properties of chiral metallic nanotubes rolled up from thin crystal plates with [011] and [111] orientations. It shows that the Poisson's ratio of nanotubes varies with the chiral angle and thickness, with some notable quantitative differences between different chiral metallic nanotubes. The findings are consistent with both anisotropic elasticity theory and molecular statics simulations.
PHYSICAL MESOMECHANICS
(2021)
Article
Mechanics
V. A. Gorodtsov, D. S. Lisovenko
Summary: In the study of the out-of-plane extension of thin two-layered plates of hexagonal crystals within the framework of anisotropic elasticity theory, effective formulas for Young's modulus and Poisson's ratio were obtained, revealing violations of the rule of mixtures. Experimental results showed that effective Young's modulus and effective Poisson's ratio may exceed the original crystal values.
PHYSICAL MESOMECHANICS
(2021)
