摘要：
Advanced interfacial engineering performs a forceful modulation effect on Zn2+ plating/stripping with simultaneous inhibition of hydrogen evolution reaction, chemical corrosion, and dendrite growth, which is responsible for high reversibility of Zn anode. Herein, a "two in one" interface engineering is developed to improve the reversibility of Zn anode, in which multi-functional Zn5(NO3)2(OH)8 center dot 2H2O layer and preferential Zn (002) texture are constructed simultaneously. Due to nucleophilicity to Zn2+ arising from electronegativity, the layer can accelerate the desolvation process of [Zn (H2O)6]2+ and transfer kinetics of Zn2+ ions, leading to uniform nucleation and effective inhibition of water-induced side reactions. Meanwhile, the latter is beneficial to guiding Zn (002)-preferred orientation deposition with compact structure. Consequently, the Zn electrodes with such complementary interface modulation exhibit prominent reversibility. With an area capacity of 1 mAh cm-2 at 1 mA cm-2, the symmetric cell operates steadily for 4000 h. Highly reversible Zn anode is maintained even at 50 mA cm-2. For full cells coupled with MnO2 cathode, impressive rate capability and cycling stability with a high capacity beyond 100 mAh g-1 at 1 A g-1 after 2000 cycles are achieved. The results provide new insights into Zn anodes with high reversibility for next-generation aqueous zinc ion batteries. A "two in one" interface engineering is developed to improve the reversibility of Zn anode, in which multi-functional Zn5(NO3)2(OH)8 center dot 2H2O layer and preferential Zn (002) texture are constructed simultaneously.Besides inhibiting water-induced side reactions, , such complementary interface not only can accelerate the desolvation process of [Zn (H2O)6]2+ and transfer kinetics of Zn2+ ions, but also guide Zn (002)-preferred orientation deposition. . image
通讯机构：
[Fang Yu; Haiqing Zhou] K;Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China
关键词：
seawater splitting;electrocatalyst;bifunctional water splitting;non-noble metal;porous material
摘要：
Given the abundant reserves of seawater and the scarcity of freshwater, real seawater electrolysis is a more economically appealing technology for hydrogen production relative to orthodox freshwater electrolysis. However, this technology is greatly precluded by the undesirable chlorine oxidation reaction and severe chloride corrosion at the anode, further restricting the catalytic efficiency of overall seawater splitting. Herein, a feasible strategy by engineering multifunctional collaborative catalytic interfaces is reported to develop porous metal nitride/phosphide heterostructure arrays anchoring on conductive Ni2P surfaces with affluent iron sites. Collaborative catalytic interfaces among iron phosphide, bimetallic nitride, and porous Ni2P supports play a positive role in improving water adsorption/dissociation and hydrogen adsorption behaviors of active Fe sites evidenced by theoretical calculations for hydrogen evolution reactions, and enhancing oxygenated species adsorption and nitrate-rich passivating layers resistant to chloride corrosion for oxygen evolution reaction, thus cooperatively propelling high-performance bifunctional seawater splitting. The resultant material Fe2P/Ni1.5Co1.5N/Ni2P performs excellently as a self-standing bifunctional catalyst for alkaline seawater splitting. It requires extremely low cell voltages of 1.624 and 1.742 V to afford current densities of 100 and 500 mA/cm2 in 1 M KOH seawater electrolytes, respectively, along with superior long-term stability, outperforming nearly all the ever-reported non-noble bifunctional electrocatalysts and benchmark Pt/IrO2 coupled electrodes for freshwater/seawater electrolysis. This work presents an effective strategy for greatly enhancing the catalytic efficiency of non-noble catalysts toward green hydrogen production from seawater electrolysis.
作者机构：
[Yuan, Ji-Bing; Zhang, Bo; Song, Ya-Ju; Yuan, JB; Tang, Shi-Qing; Wang, Xin-Wen] Hengyang Normal Univ, Key Lab Optoelect Control & Detect Technol Univ Hu, Hengyang 421002, Peoples R China.;[Yuan, Ji-Bing; Zhang, Bo; Song, Ya-Ju; Yuan, JB; Tang, Shi-Qing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Kuang, Le -Man; Kuang, LM] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contro, Minist Educ, Changsha 410081, Peoples R China.;[Kuang, Le -Man; Kuang, LM] Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.;[Kuang, Le -Man; Kuang, LM] Zhengzhou Univ Light Ind, Synerget Innovat Acad Quantum Sci & Technol, Zhengzhou 450002, Peoples R China.
通讯机构：
[Kuang, LM ; Yuan, JB ] H;Hengyang Normal Univ, Key Lab Optoelect Control & Detect Technol Univ Hu, Hengyang 421002, Peoples R China.;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contro, Minist Educ, Changsha 410081, Peoples R China.;Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
摘要：
We propose a theoretical scheme for quantum sensing of temperature close to absolute zero in a quasi-one-dimensional Bose-Einstein condensate (BEC). In our scheme, a single-atom impurity qubit is used as a temperature sensor. We investigate the sensitivity of the single-atom sensor in estimating the temperature of the BEC. We demonstrate that the sensitivity of the temperature sensor can saturate the quantum Cramér-Rao bound by means of measuring quantum coherence of the probe qubit. We study the temperature sensing performance by using quantum signal-to-noise ratio (QSNR). It is indicated that there is an optimal encoding time at which the QSNR can reach its maximum in the full-temperature regime. In particular, we find that the QSNR reaches a finite upper bound in the weak coupling regime even when the temperature is close to absolute zero, which implies that the sensing-error-divergence problem is avoided in our scheme. Our work opens a way for quantum sensing of temperature close to absolute zero in the BEC.
摘要：
The photonic spin Hall effect (PSHE), as an exotic analogy to the spin Hall effect in electronics, is induced by the spin-orbit interaction of light and manifests itself as a spin-related splitting of left- and right-handed circularly polarized beams. Recently, the PSHE has been revealed and explored in a wide range of fields such as optical interfaces, metasurfaces/metamaterials, near-field optics, topological and disordered systems, as well as non-Hermitian photonics. Significantly, the PSHE provides the unique spin degrees of freedom to flexibly control light, which has enabled tremendous applications in precise metrology, spin-based nanophotonic devices, and mathematical operations, to name only a few. Also, new methods to manipulate and enhance this effect have been actively pursued. Here, we provide a comprehensive review of the key aspects in the PSHE, especially the underlying physics, new techniques of manipulations, and emerging applications. Our review can not only help new researchers of this field in a timely manner but also inspire more efforts in making and engineering PSHE-based devices in coming years.
期刊：
Journal of Luminescence,2023年257:119742 ISSN：0022-2313
通讯作者：
Yanhong Deng<&wdkj&>Jianxin Tang
作者机构：
[Zhu, Ying; Ma, Liang; Deng, Yanhong; Mao, Liwei; Zhong, Liya; Wang, Jinjiang] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.;[Lu, Feiping] Tianshui Normal Univ, Dept Phys, Tianshui 741000, Peoples R China.;[Tang, Jianxin] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China.
通讯机构：
[Yanhong Deng] C;[Jianxin Tang] J;Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China<&wdkj&>College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang, 421002, China
摘要：
In this work, we demonstrate single-emitting-layer hybrid white organic light-emitting diodes (WOLEDs) with high-efficiency and low efficiency roll-off. Here, the white emission arises from stable blue emission via elec-troluminescence (EL) spectral shift from green thermally activated delayed fluorescence (TADF) emitter and yellow phosphorescent emitter. WOLEDs shows a maximum current efficiency of 56.77 cd/A, maximum power efficiency of 50.19 lm/W, and maximum external quantum efficiency of 20.00%. Compared to the devices composed of conventional blue TADF emitters, the device based on EL spectral shift-induced blue emission exhibit higher performances, indicating that efficient white emission can be obtained without a typical blue emitter. Our study provides an alternative way to fabricate high-performance WOLEDs based on EL spectral shift technology.
摘要：
Photocatalytic reduction of CO2 into CH4 has attracted comprehensive concerns as an effective solution to meet the energy crisis and global warming. F-doped defective anatase TiO2 was reported to effectively improve the photocatalytic efficiency and the selectivity of CH4 generation. However, the mechanism behind it remains unclear. Herein, we systematically studied the photocatalytic pathway of CO2 reduction to CH4 on F-doped defective anatase TiO2(101) by density functional calculations. First, we found that F doping leads to the enhanced reduction potential of photoexcited electrons. Furthermore, we identified a thermodynamically feasible reaction path: CO2 -> CO/HCOO -> CHO -> CH2O -> CH3O -> CH3OH -> CH3 -> CH4. The whole reaction is exothermic, elucidating an extremely strong reduction activity of the TiO2(101) surface. Our work provides some new insights into the CO2 reduction mechanisms of F-doped TiO2, which will help to design TiO2-related photocatalysts with high catalytic performance.
关键词：
open system;non-Markovianity;waveguide QED;quantum information
摘要：
We investigate the non-Markovianity (NM) of a waveguide QED with a two-level atom as the system and a semi-infinite rectangular waveguide as the environment, where the transverse magnetic (TM$_{mn}$) modes define the quantum channels of guided photons. The perfect mirror imposed by the finite end exerts a retarded feedback mechanism to allow for information backflow, which leads to NM dynamics. For the energy separation of the atom far away from the cutoff frequencies of transverse modes, the delay differential equations are obtained with single-excitation initial in the atom. Our attention is focused on the effects of multiple quantum channels involved in guiding photons on the degree of non-Markovian behavior. An asymptotic value of the non-Markovianity $\mathcal{N}_{1}$ can be found as the atom-mirror distance is large enough, however, the asymptotic value of $\mathcal{N}_{2}$ of the atom interacting with the effective double-modes is lower than that of the atom interacting with the effective single-mode. We also show that $\mathcal{N}_{1}$ is a constant, and the analytical expression for $\mathcal{N}_{2}$ is related to the parameters associated with the modes, which is related to the interference of the two modes.
摘要：
We present a method for implementing quantum temperature sensing for extremely low temperatures in a quasi-1D dipolar Bose-Einstein condensate reservoir with a magnetic field-driven impurity atom acting as a quantum sensor. By analyzing the quantum signal-to-noise ratio (QSNR) as a metric for temperature sensing performance, we demonstrate that the presence of an attractive dipolar interaction in the reservoir, which includes the effects of non-Markovian dynamics on the sensor, significantly enhances estimation efficiency. We also investigate the steady-state estimation efficiency for long-encoding times through an analytical expression, which shows that the optimal QSNR depends on the driving magnetic field of the impurity atom. Our method can achieve high-efficiency temperature sensing for any low temperature by tuning the magnetic field. These findings suggest that our approach has potential applications in high-resolution quantum thermometry.
关键词：
Aqueous zinc ion batteries;Zinc anode;Separator modification;Graphite fluoride
摘要：
Aqueous zinc ion batteries (AZIBs) are considered as a promising candidate for large-scale energy storage due to its superior energy density, high specific energy, environmental friendliness and low cost. However, the dendrite growth and side reaction of zinc anode severely hinder its stability and availability. Herein, commercial glass fiber separators are modified by graphite fluoride nanoflakes via vacuum filtration (denoted as GFNs-PVDF@GF) to reinforce Zn metal anode. The GFNs-PVDF@GF separator acts as an efficient ions transport modulator to homogenize Zn2+ transport and suppress SO42− flux due to strong zinc affinity and electronegativity of GFNs, thereby restraining the growth of zinc dendrite and the formation of byproducts. Accordingly, the Zn||Zn symmetric cell harvests a stable and reversible cycling for 1800 h at 1 mA cm−2 and operates at 5 mA cm−2 for over 900 h. The assembled Zn||MnO2 full cells deliver a capacity retention of 92% after 200 cycles at 1 A g−1. Our results provide a simple and effective strategy of improving stability of zinc anode for high-performance AZIBs.
通讯机构：
[Tan, YL ; Yu, F ] H;Hengyang Normal Univ, Coll Phys & Elect Engn, Henghua Rd 16, Hengyang 421002, Hunan, Peoples R China.;Hunan Normal Univ, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contro, Key Lab Matter Microstruct & Funct Hunan Prov, Changsha 410081, Peoples R China.
关键词：
Hydrogen evolution reaction;Metal phosphide;Water splitting;All-pH electrocatalyst;Large-current density
摘要：
The catalytic hydrogen-evolving activities of noble-metal-free catalysts can be greatly enhanced by the crystal structure and components through appropriate interface engi-neering with anion and cation doped into the catalytic materials. However, the de-velopments of inexpensive electrocatalysts suffer from activity incompatibility with different water sources over a wide pH range. Here we report a promising HER electro-catalyst by hybridizing iron phosphide (FeP4) nanoparticles with highly conductive CoP nanowire arrays (abbreviated as FeP4/CoP) through an in-situ two-step phosphorization process, which exhibits outstanding pH-universal hydrogen-evolving activity in different electrolytes with a wide pH range, featured by extremely low overpotentials of 61, 52 and 37 mV to afford a current density of 10 mA cm-2 in neutral, alkaline and acidic electrolytes, respectively. Especially, the as-prepared FeP4/CoP hybrid exhibits extraordinary catalytic performance and long-term stability at large current densities up to 500 mA cm2 for hydrogen evolution in acidic and alkaline electrolytes, indicating its potential substitute for the practical H2 production. This work represents a simple and low-cost strategy toward rational design and development of all-pH catalysts for pH-universal hydrogen evolution.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
通讯机构：
[Lang Li] C;College of Computer Science and Technology, Hengyang Normal University, Hengyang, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang Normal University, Hengyang, China
关键词：
internet of things;5G;dynamic S-box;bit-slice technology;lightweight block cipher
关键词：
carbon-based FET;FET gas sensor;sensing gate;trace gas detection;hydrogen sulfide
摘要：
Sulfur hexafluoride is widely used in power equipment because of its excellent insulation and arc extinguishing properties. However, severe damage to power equipment may be caused and a large-scale collapse of the power grid may occur when SF(6) is decomposed into H(2)S, SOF(2), and SO(2)F(2). It is difficult to detect the SF(6) concentration as it is a kind of inert gas. Generally, the trace gas decomposed in the early stage of SF(6) is detected to achieve the function of early warning. Consequently, it is of great significance to realize the real-time detection of trace gases decomposed from SF(6) for the early fault diagnosis of power equipment. In this work, a wafer-scale gate-sensing carbon-based FET gas sensor is fabricated on a four-inch carbon wafer for the detection of H(2)S, a decomposition product of SF(6). The carbon nanotubes with semiconductor properties and the noble metal Pt are respectively used as a channel and a sensing gate of the FET-type gas sensor, and the channel transmission layer and the sensing gate layer each play an independent role and do not interfere with each other by introducing the gate dielectric layer Y(2)O(3), giving full play to their respective advantages to forming an integrated sensor of gas detection and signal amplification. The detection limit of the as-prepared gate-sensing carbon-based FET gas sensor can reach 20 ppb, and its response deviation is not more than 3% for the different batches of gas sensors. This work provides a potentially useful solution for the industrial production of miniaturized and integrated gas sensors.
摘要：
Adsorption of atoms on the surface of two-dimensional (2D) materials is one of the most effective ways to induce magnetic properties. In this study, the atomic structure, electronic structure, magnetic properties, and strain effects of VA group atoms (N, P, As, Sb and Bi) adsorbed on a WS2 monolayer are systematically studied using a first-principles method. After calculating the adsorption energy, it was determined that all of the VA group atoms showed a preference for being directly adsorbed above the S atoms. Based on the analysis of the orbital projection density of states and charge transfer, it appears that the group VA atoms chemisorb onto the WS2 layer. The adsorption of the VA group atoms on a WS2 monolayer will introduce 1 & mu;(B) magnetic moment into the system. It is exciting that WS2 monolayer adsorbed with P, As, Sb or Bi is half-metallic with 100% spin polarization at the Fermi level. Furthermore, the magnetic properties are robust in the range of 10% strain and the magnetic moment of the system can be effectively controlled by tensile strain. In addition, when two or four atoms are adsorbed on a monolayer WS2 supercell, the adatoms show a tendency towards alignment in terms of their local magnetic moments, which may indicate a potential for ferromagnetic ordering in the system. After the adsorption of VA group atoms, monolayer WS2 exhibits structural stability, tunable magnetism under strain, 100% spin polarizability, and potential for ferromagnetism, making it a promising material for spintronic device applications.
关键词：
Internet of Things (IoT);involutive;lightweight block cipher;permutation;S-box;security
摘要：
Nowadays, the use of the Internet of Things has reached a commanding height in a new round of economic and technological upsurge. Its data transmission security has attracted much attention. It is well known that substitution permutation networks (SPNs) ciphers with high diffusion are not advantageous in unified encryption and decryption circuits with extremely resources constrained. Although some research has been carried out to address this issue, there are still insufficiencies. In this article, we propose a new 64-bit lightweight block cipher based on SPN named IVLBC, whose key allows 80 and 128 bits. The components of IVLBC are involutions. In particular, we propose a Feistel with tree structure to obtain a compact and involutive S-box. Also, the nibble-based involutive permutation is proposed to obtain the involutive permutation. Decryption can reuse encrypted code and circuitry in both software and hardware implementations. We prove that the costs of IVLBC are less than PRESENT, PRINCE, Midori, I-PRESENTTM, CRAFT, etc., in unified encryption and decryption circuits. In addition, we conduct other performance tests on IVLBC such as the differential attack, linear attack, integral attack, algebraic attack, invariant attacks, etc.
通讯机构：
[Xu, WP; Wei, XL ] X;Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.;Xiangtan Univ, Hunan Inst Adv Sensing & Informat Technol, Xiangtan 411105, Peoples R China.;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
摘要：
Two-dimensional (2D) layered SnP(2)S(6 )has been synthesized in experiments, which has attracted much attention for application in optoelectronic devices. However, the influence of common adsorbates (i.e., H2O and O-2) and vacancy defects may play a key role in optoelectronic devices. Herein, we systematically investigate the optoelectronic properties of the SnP(2)S(6 )monolayer in the presence of H2O, O-2, and vacancies by first principles. The results show that the O-2 and H2O molecules behave qualitatively differently on the SnP(2)S(6 )surface. The presence of S atom vacancies significantly enhanced the adsorption of H2O and O-2 molecules. Furthermore, H2O reduces the dissociation potential of O-2 on the surface of pristine SnP2S6, while S vacancies significantly facilitate the dissociation of O-2, indicating that SnP2S6 will readily be oxidized under ambient conditions in the presence of S vacancies. Importantly, it is confirmed that the H2O adsorption slightly influenced the electronic properties of monolayer SnP2S6. In sharp contrast, O-2 adsorption and vacancies enable significant changes in the properties of monolayer SnP2S6. Furthermore, an indirect-to-direct band gap transition was observed when the S atom vacancy concentration of monolayer SnP(2)S(6 )was 6.25%.
通讯机构：
[Juexian Cao; Xiaolin Wei] D;Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, P. R. China<&wdkj&>Department of Physics & Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, P. R. China<&wdkj&>College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, P. R. China
摘要：
Motivated by fundamental interests and practical applications, three-dimensional (3D) photocatalysts are a fascinating area of research in clean energy. Based on first-principles calculations, we predicted three new 3D polymorphs of TiO2: delta-, epsilon-, and zeta-TiO2. Our results indicate that the band gaps of TiO2 decrease almost linearly with an increase in the coordination number of Ti. Moreover, delta-TiO2 and zeta-TiO2 are semiconductors, whereas epsilon-TiO2 is a metal, and the lowest energy of zeta-TiO2 is a quasi-direct band gap semiconductor with a distinctive band gap of 2.69 eV, calculated by the HSE06 level. In addition, the calculated imaginary part of the dielectric function indicates that the optical absorption edge is located in the visible light region, suggesting that the proposed zeta-TiO2 may be a good photocatalyst candidate. Importantly, zeta-TiO2 with the lowest energy is dynamically stable, and phase diagrams based on total energies at a specific pressure indicate that zeta-TiO2 can be synthesized from rutile TiO2 at high-pressure conditions.
