Chin-Hsuan Chen

Bio: Chin-Hsuan Chen is an academic researcher from National Tsing Hua University. The author has contributed to research in topics: Clathrate hydrate & Adsorption. The author has an hindex of 1, co-authored 3 publications receiving 6 citations.

Topological Phase and Quantum Anomalous Hall Effect in Ferromagnetic Transition-Metal Dichalcogenides Monolayer 1T-VSe2.

Abstract: Magnetic two-dimensional (2D) van der Waals materials have attracted tremendous attention because of their high potential in spintronics. In particular, the quantum anomalous Hall (QAH) effect in magnetic 2D layers shows a very promising prospect for hosting Majorana zero modes at the topologically protected edge states in proximity to superconductors. However, the QAH effect has not yet been experimentally realized in monolayer systems to date. In this work, we study the electronic structures and topological properties of the 2D ferromagnetic transition-metal dichalcogenides (TMD) monolayer 1T-VSe2 by first-principles calculations with the Heyd-Scuseria-Ernzerhof (HSE) functional. We find that the spin-orbit coupling (SOC) opens a continuous band gap at the magnetic Weyl-like crossing point hosting the quantum anomalous Hall effect with Chern number C=2. Moreover, we demonstrate the topologically protected edge states and intrinsic (spin) Hall conductivity in this magnetic 2D TMD system. Our results indicate that 1T-VSe2 monolayer serves as a stoichiometric quantum anomalous Hall material.

Fundamentals, synthesis, characterization and environmental applications of layered double hydroxides: a review

Abstract: The availability of clean water and energy scarcity are rising issues in the context of rising population and industrialization, calling for advanced methods of remediation and energy production. Here, layered double hydroxides, as anionic clays, can be used and engineered as adsorbents or catalysts. Layered double hydroxides are generally highly stable, safe and recyclable. They can be filled with nanomaterials to form composites of enhanced performance. Here, we review fundamentals of layered double hydroxides, synthetic protocols, and applications to energy storage, dye degradation, organic pollutant degradation, water treatment, photoelectrochemical water splitting and carbon dioxide reduction. Composites appear competitive in terms of low-cost, tunable band-gaps and high electrical conductivity.

Layered Double Hydroxides in Bioinspired Nanotechnology

Abstract: Layered Double Hydroxides (LDHs) are a relevant class of inorganic lamellar nanomaterials that have attracted significant interest in life science-related applications, due to their highly controllable synthesis and high biocompatibility. Under a general point of view, this class of materials might have played an important role for the origin of life on planet Earth, given their ability to adsorb and concentrate life-relevant molecules in sea environments. It has been speculated that the organic–mineral interactions could have permitted to organize the adsorbed molecules, leading to an increase in their local concentration and finally to the emergence of life. Inspired by nature, material scientists, engineers and chemists have started to leverage the ability of LDHs to absorb and concentrate molecules and biomolecules within life-like compartments, allowing to realize highly-efficient bioinspired platforms, usable for bioanalysis, therapeutics, sensors and bioremediation. This review aims at summarizing the latest evolution of LDHs in this research field under an unprecedented perspective, finally providing possible challenges and directions for future research.