Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Structural topology and symmetry of a two-dimensional (2D) network play pivotal roles in defining its electrical properties and functionalities. Here, a binary buckled honeycomb lattice with C symmetry, which naturally hosts topological Dirac fermions and out-of-plane polarity, is proposed. It is successfully achieved in a group IV-V compound, namely monolayer SiP epitaxially grown on Ag(111) surface. Combining first-principles calculations with angle-resolved photoemission spectroscopy, the degeneration of the Dirac nodal lines to points due to the broken horizonal mirror symmetry is elucidated. More interesting, the SiP monolayer manifests metallic nature, which is mutually exclusive with polarity in conventional materials. It is further found that the out-of-plane polarity is strongly suppressed by the metallic substrate. This study not only represents a breakthrough of realizing intrinsic polarity in 2D metallic material via ingenious design but also provides a comprehensive understanding of the intricate interplay of many exotic low-dimensional quantum phenomena.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/adma.202404341 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
VAM-Based Equivalent Cauchy Model for Accordion Honeycomb Structures with Zero Poisson's Ratio.
Materials (Basel)
July 2025
School of Civil Engineering, Chongqing University, Chongqing 400045, China.
The accordion honeycomb has unique deformation characteristics in cellular materials. This study develops a three-dimensional equivalent Cauchy continuum model (3D-ECM) based on the variational asymptotic method (VAM) to efficiently predict the mechanical response of the accordion honeycomb. The accuracy of the 3D-ECM is validated via quasi-static compression experiments on 3D-printed specimens and detailed 3D finite element simulations (3D-FEM), showing a strong correlation between simulation and experimental data.
View Article and Find Full Text PDFMulti-Scale Study on Ultrasonic Cutting of Nomex Honeycomb Composites of Disc Cutters.
Materials (Basel)
July 2025
Division of Intelligent Instrument and Equipment, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
To address the issues of burr formation, structural deformation, and tearing in the conventional machining of Nomex honeycomb composites, this study aims to clarify the mechanisms by which ultrasonic vibration-assisted cutting enhances machining quality. A multi-scale analysis framework is developed to examine the effects of ultrasonic vibration on fiber distribution, cell-level shear response, and the overall cutting mechanics. At the microscale, analyses show that ultrasonic vibration mitigates stress concentrations, thereby shortening fiber length.
View Article and Find Full Text PDFPlumbene: A Comprehensive Review of Theoretical and Experimental Advances.
J Phys Condens Matter
August 2025
U.S. Department of Energy, Ames National Laboratory, 2332 Pammel Dr., Ames, Ames, Iowa, 50011, UNITED STATES.
Plumbene, a two-dimensional (2D) material consisting of a single layer of lead (Pb) atoms in a honeycomb lattice, stands as a pioneering addition to the elemental 2D material family. This comprehensive review encapsulates the theoretical predictions and experimental advancements that underscore its potential. With properties shaped by significant spin-orbit coupling and structural buckling, plumbene offers a playground for phenomena like quantum spin Hall effect, superconductivity, and topological phase transition.
View Article and Find Full Text PDFGroup VA Elemental Nanosheets as Efficient Carriers for Nitrosourea in Targeted Cancer Therapy.
ACS Appl Bio Mater
July 2025
Department of Microbiology and Parasitology, Anhui Provincial Laboratory of Pathogen Biology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, China.
Cancer is a leading cause of death worldwide, and nanotechnology-based drug delivery systems offer a promising way to improve treatment by better targeting tumors and delivering multiple drugs more effectively. Herein, using first-principles calculations, we investigate the potential of monolayer group VA (P, As, Sb, Bi) elemental two-dimensional (2D) materials as a promising platform for the efficient and targeted delivery of the anticancer drug Nitrosourea (NU). It is first shown that group VA elemental 2D materials can be stabilized in different arrangements of group VA atoms, such as the puckered and buckled honeycomb structure.
View Article and Find Full Text PDFFerroelectricity, Piezoelectricity, and Unprecedented Starry Ferroelastic Patterns in Organic-Inorganic (CHC(NH))[SbX] (X = Cl/Br/I) Hybrids.
Inorg Chem
May 2025
Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.
In this study, we present a novel class of lead-free hybrid antimony halides incorporating the acetamidinium cation, with the chemical compositions: (CHC(NH))[SbCl] (), (CHC(NH))[SbBr] (), and (CHC(NH))[SbI] () . Despite their seemingly analogous chemical formulations, these compounds exhibit diverse physical characteristics, predominantly dictated by the differences in their metal-halide architectures. Indeed, the anionic frameworks of and are reminiscent of well-known ferroelectric materials, with distinguished by its piezoelectric and ferroelastic characteristics, underpinned by a buckled honeycomb two-dimensional (2D) layers of antimony chloride.
View Article and Find Full Text PDF