Andrew T. S. Wee
YOU?
Author Swipe
View article: Doping-tunable charge ordering in semiconducting single-layer Cr <sub>2</sub> Se <sub>3</sub>
Doping-tunable charge ordering in semiconducting single-layer Cr <sub>2</sub> Se <sub>3</sub> Open
The charge density wave (CDW), a charge ordering phase, offers a valuable framework for exploring electron-electron interactions, electron-phonon coupling, and quantum phase transitions. In CDW materials, carrier density substantially infl…
View article: Semiconductor‐to‐metal transition in platinum dichalcogenides induced by niobium dichalcogenides
Semiconductor‐to‐metal transition in platinum dichalcogenides induced by niobium dichalcogenides Open
Metallizing 2D semiconductors is a crucial research area with significant applications, such as reducing the contact resistance at metal/2D semiconductor interfaces. This is a key challenge in the realization of next‐generation low‐power a…
View article: Enhancing Nonenzymatic Glucose Detection Through Cobalt‐Substituted Hafnia
Enhancing Nonenzymatic Glucose Detection Through Cobalt‐Substituted Hafnia Open
Engineered defect chemistry in ultrathin (≈5 nm) hafnia through substitutional cobalt (HCO) is investigated for selective glucose sensing. Thin films of HCO, grown using chemical solution deposition (CSD)—traditionally used to grow thick f…
View article: Redirecting On‐surface Cycloaddition Reactions in a Self‐assembled Ordered Molecular Array on Graphite
Redirecting On‐surface Cycloaddition Reactions in a Self‐assembled Ordered Molecular Array on Graphite Open
The synthesis of atomically precise carbon nanostructures in ultra‐high vacuum has seen extensive progress on metal surfaces. However, this remains challenging on chemically inert surfaces. It is because the thermally activated C−C couplin…
View article: Imaging of guest molecule adsorption onto 2D covalent organic frameworks by scanning tunneling microscopy
Imaging of guest molecule adsorption onto 2D covalent organic frameworks by scanning tunneling microscopy Open
Porous materials play an important role in molecular adsorption and separation. However, understanding the mechanisms of molecular adsorption and separation into the pores remains a challenge. Herein, the adsorption of 1,3,5-tris(4-iodophe…
View article: 1D Flat Bands in Phosphorene Nanoribbons with Pentagonal Nature
1D Flat Bands in Phosphorene Nanoribbons with Pentagonal Nature Open
Materials with flat bands can serve as a promising platform to investigate strongly interacting phenomena. However, experimental realization of ideal flat bands is mostly limited to artificial lattices or moiré systems. Here, a general way…
View article: Observation of kagome-like bands in two-dimensional semiconducting Cr8Se12
Observation of kagome-like bands in two-dimensional semiconducting Cr8Se12 Open
The kagome lattice is a versatile platform for investigating correlated electronic states. However, its realization in two-dimensional (2D) semiconductors for tunable device applications is still challenging. An alternative strategy to cre…
View article: Uncovering an Interfacial Band Resulting from Orbital Hybridization in Nickelate Heterostructures
Uncovering an Interfacial Band Resulting from Orbital Hybridization in Nickelate Heterostructures Open
The interaction of atomic orbitals at the interface of perovskite oxide heterostructures has been investigated for its profound impact on the band structures and electronic properties, giving rise to unique electronic states and a variety …
View article: Realization of a 2D Lieb Lattice in a Metal–Inorganic Framework with Partial Flat Bands and Topological Edge States
Realization of a 2D Lieb Lattice in a Metal–Inorganic Framework with Partial Flat Bands and Topological Edge States Open
Flat bands and Dirac cones in materials are the source of the exotic electronic and topological properties. The Lieb lattice is expected to host these electronic structures, arising from quantum destructive interference. Nevertheless, the …
View article: Unraveling the role of Ta in the phase transition of Pb(Ta1+xSe2)2 using low-temperature Raman spectroscopy
Unraveling the role of Ta in the phase transition of Pb(Ta1+xSe2)2 using low-temperature Raman spectroscopy Open
Phase engineering strategies in two-dimensional transition metal dichalcogenides (2D-TMDs) have garnered significant attention due to their potential applications in electronics, optoelectronics, and energy storage. Various methods, includ…
View article: Realization of Two‐Dimensional Intrinsic Polar Metal in a Buckled Honeycomb Binary Lattice
Realization of Two‐Dimensional Intrinsic Polar Metal in a Buckled Honeycomb Binary Lattice Open
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 3v symmetry, which naturally hosts topological…
View article: Orbital origin of magnetic moment enhancement induced by charge density wave in kagome FeGe
Orbital origin of magnetic moment enhancement induced by charge density wave in kagome FeGe Open
Interactions among various electronic states such as CDW, magnetism, and superconductivity are of high significance in strongly correlated systems. While significant progress has been made in understanding the relationship between CDW and …
View article: Tunable Collective Excitations in Epitaxial Perovskite Nickelates
Tunable Collective Excitations in Epitaxial Perovskite Nickelates Open
The formation of plasmons through the collective excitation of charge density has generated intense discussions, offering insights to fundamental sciences and potential applications. While the underlying physical principles have been well-…
View article: Tunable Collective Excitations in Epitaxial Perovskite Nickelates
Tunable Collective Excitations in Epitaxial Perovskite Nickelates Open
The formation of plasmons through the collective excitation of charge density has generated intense discussions, offering insights to fundamental sciences and potential applications. While the underlying physical principles have been well-…
View article: Uncovering an Interfacial Band Resulting from Orbital Hybridization in Nickelate Heterostructures
Uncovering an Interfacial Band Resulting from Orbital Hybridization in Nickelate Heterostructures Open
The interaction of atomic orbitals at the interface of perovskite oxide heterostructures has been investigated for its profound impact on the band structures and electronic properties, giving rise to unique electronic states and a variety …
View article: Realization of a Two-Dimensional Lieb Lattice in a Metal-Inorganic Framework with Flat Bands and Topological Edge States
Realization of a Two-Dimensional Lieb Lattice in a Metal-Inorganic Framework with Flat Bands and Topological Edge States Open
Flat bands and Dirac cones in materials are at the source of the exotic electronic and topological properties. The Lieb lattice is expected to host these electronic structures, arising from quantum destructive interference. Nevertheless, t…
View article: A jellyfish inspired soft robot powered by cable-driven actuation
A jellyfish inspired soft robot powered by cable-driven actuation Open
Jellyfish’s natural propulsion abilities with a soft body has often served as an inspiration for many soft robots due to their size and efficiency, with many robots being based on the ephyra larva stage of a jellyfish. However, most previo…
View article: Phase-selective in-plane heteroepitaxial growth of H-phase CrSe2
Phase-selective in-plane heteroepitaxial growth of H-phase CrSe2 Open
Phase engineering of two-dimensional transition metal dichalcogenides (2D-TMDs) offers opportunities for exploring unique phase-specific properties and achieving new desired functionalities. Here, we report a phase-selective in-plane heter…
View article: When Machine Learning Meets 2D Materials: A Review
When Machine Learning Meets 2D Materials: A Review Open
The availability of an ever‐expanding portfolio of 2D materials with rich internal degrees of freedom (spin, excitonic, valley, sublattice, and layer pseudospin) together with the unique ability to tailor heterostructures made layer by lay…
View article: LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Heterointerface: 20 Years and Beyond
LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Heterointerface: 20 Years and Beyond Open
This year marks the 20th anniversary of the discovery of LaAlO 3 /SrTiO 3 (LAO/STO) oxide heterointerfaces. Since their discovery, transition metal oxide (TMO) interfaces have emerged as a fascinating and fast‐growing area of research, off…
View article: Small polarons mediated near-room-temperature metal-insulator transition in vanadium dioxide and their hopping dynamics
Small polarons mediated near-room-temperature metal-insulator transition in vanadium dioxide and their hopping dynamics Open
Researchers pursuing advanced photoelectric devices have discovered near room-temperature metal-insulator transitions (MIT) in non-volatile VO2. Despite theoretical investigations suggesting that polaron dynamics mediate the MIT, direct ex…
View article: Probing van der Waals magnetic surface and interface via circularly polarized X-rays
Probing van der Waals magnetic surface and interface via circularly polarized X-rays Open
Advances in research of magnetic two-dimensional van der Waals (2D vdW) materials have opened up new opportunities in miniaturization of spintronic devices at the atomically thin limit. One major research thrust, which is the subject of th…
View article: In-plane template induced selective growth of H-phase CrSe2
In-plane template induced selective growth of H-phase CrSe2 Open
Phase engineering in two-dimensional transition metal dichalcogenides (2D-TMDs) offers opportunities for exploring their unique properties of different phases and achieving new desired functionalities. Here, we report a selective synthetic…
View article: Anomalous Temperature-Induced Particle Size Reduction in Manganese Oxide Nanoparticles
Anomalous Temperature-Induced Particle Size Reduction in Manganese Oxide Nanoparticles Open
The intricate role of temperature in the structure-property relationship of manganese oxide nanoparticles (Mn3O4 NPs) remains an open question. In this study, we successfully synthesized Mn3O4 NPs using the hydrothermal method with two dif…
View article: Tunable Spin‐Polarized States in Graphene on a Ferrimagnetic Oxide Insulator
Tunable Spin‐Polarized States in Graphene on a Ferrimagnetic Oxide Insulator Open
Spin‐polarized two‐dimensional (2D) materials with large and tunable spin‐splitting energy promise the field of 2D spintronics. While graphene has been a canonical 2D material, its spin properties and tunability are limited. Here, this wor…
View article: A closed-loop catalytic nanoreactor system on a transistor
A closed-loop catalytic nanoreactor system on a transistor Open
Precision chemistry demands miniaturized catalytic systems for sophisticated reactions with well-defined pathways. An ideal solution is to construct a nanoreactor system functioning as a chemistry laboratory to execute a full chemical proc…