Article
Chemistry, Physical
Xiang Xu, Yang You, Xingyu Liu, Dafu Wei, Yong Guan, Anna Zheng
Summary: The study found that 0.1-0.5 wt% of multi-wall carbon nanotubes can prevent the auto-oxidation degradation of fluorosilicone rubber by scavenging alkyl radicals, showing antioxidant effect. Density functional theory calculations revealed that carbon nanotubes are an open-shell system capable of reacting with highly reactive radicals.
Article
Chemistry, Physical
Sung Gu Kang
Summary: The study explored the adsorption of NO2 and SO2 on MgO/(Mg0.5Ni0.5)O/MgO(1 0 0) and found that it is tunable through applied strain and certain promoters like Ca and Sr. The use of promoters was more effective in enhancing the strength of NO2 and SO2 adsorption compared to strain. The interactions between the adsorbate and the surface were further elucidated through an investigation of the density of states and Bader charge.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mengna Bai, Zhiheng Song, Zheng Yang, Zhiqing Guo, Yizhou Liu, Haoran Guo, Hanwu Lei, Erguang Huo
Summary: The catalytic conversion mechanism of guaiacol on the MgO surface, as a model compound of methoxy phenols, was investigated in this study using density functional theory calculations. The results showed that the presence of a pre-adsorbed hydrogen atom on the MgO surface resulted in lower adsorption energy and lower energy barrier for the conversion of guaiacol into o-cresol compared to the clean MgO surface. This indicates that the presence of a hydrogen source promotes the conversion of methoxy phenols into alkylated phenols over the MgO catalyst.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Physics, Multidisciplinary
George Alexandru Nemnes, Nicolae Filipoiu, Valentin Sipica
Summary: The proposed workflow includes feature selection as a key step for optimizing research methods. Energy gaps of hybrid graphene-boron nitride nanoflakes were predicted using artificial neural networks, with training data obtained by associating structural information to the target quantity. Proper feature vector selection is crucial for accurate and efficient models.
Article
Biochemistry & Molecular Biology
Nafiu Suleiman, Abu Yaya, Michael D. Wilson, Solomon Aryee, Samuel K. Kwofie
Summary: This study investigates the application of BNNTs and CNTs as inhibitors of mycolactone. The findings suggest that CNTs have better adsorption capability and can be potentially excellent inhibitors of mycolactone toxins in biological systems.
Article
Chemistry, Physical
Atsushi Ishikawa, Yoshitaka Tateyama
Summary: The hydrogen abstraction from CH(4)to MgO is a crucial step in the oxidative coupling of methane. Through density functional theory calculations, it was found that MgO(110) and stepped MgO are strong candidates as active sites involved in the process.
Article
Engineering, Chemical
Irina Nesterova, Yuriy Kanygin, Pavel Lomovitskiy, Aleksey Khlyupin
Summary: The description of fluid mixtures molecular behavior and the calculation of their thermodynamic properties are of great importance. This paper provides a comparative analysis of mixing rules and obtains intermolecular interaction parameters for mixture components. It demonstrates the predictive capability of a mixture DFT model and highlights the challenges in predicting vapor-liquid equilibrium experimental data.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Akshpreet Kaur, Sukhbir Singh, Preetika Sharma, Ankur Gupta, Gaurav Sapra
Summary: In this study, the triboelectric performance of PDMS and MWCNT-PDMS based TENG is investigated using theoretical calculations and experimental verification. The influence of contact surface area on the open circuit voltage of TENGs is studied. The results demonstrate that increasing the contact area improves the open circuit voltage of TENGs, and the addition of MWCNTs significantly enhances the voltage output.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
V. Abinaya, D. John Thiruvadigal, R. Akash, A. Sakthi Balaji, R. M. Hariharan, J. Sneha, U. Adharsh, K. Janani Sivasankar
Summary: In this study, the structural and electronic properties of aluminum nitride nanotubes (AlNNT) chemically modified with various biologically available functional groups were investigated using density functional theory. It was found that the band gap of the AlNNT can be reduced by chemical functionalization, making it a potential candidate for drug delivery applications.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Xiaoqing Yang, Minglang Hu, Tianhao Su, Xiaonan Ma, Yangyang Chen, Xiangyang Kong, Wei Ren
Summary: In this study, a stable 1×1 ZnMgO superlattice was constructed along the crystallographic c-direction, and its electronic, ferroelectric and piezoelectric properties were calculated using density-functional theory. It was found that epitaxial tensile strain can effectively enhance material properties, such as increasing the piezoelectric constant, reducing the polarization barrier, and improving the piezoelectric modulus and electromechanical coupling coefficient.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Weiling Zhao, Zhiling Huang, Hui Shen, Xianglong Li, Shaofen Zhao, Bo Xie, Shengjie Xia
Summary: This study investigated the effects of metal doping and crystal plane selection on the CO2 adsorption properties of MgO using density functional theory (DFT) methods. The results showed that the appropriate crystal plane and metal doping can improve the adsorption properties of MgO on CO2. The influence of different crystal planes and metal dopants on CO2 adsorption properties varied significantly. The research provides some references for experimental studies on CO2 adsorption by MgO by combining the dual modification of crystal plane and doped metal.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Nicolas Tancogne-Dejean, Florian G. Eich, Angel Rubio
Summary: In this work, the authors used first-principles simulations to study high-harmonic generation in the topological Diract semimetal Na3Bi and analyzed the effect of spin-orbit coupling on the harmonic response. They found that spin-orbit coupling affects the excitation of carriers, modifies the electron velocity in each spin channel, and changes the timing of emitted harmonics. Furthermore, they discovered that spin-orbit coupling directly couples the charge current to the spin currents, suggesting potential applications in high-harmonic spectroscopy of spin currents in solids.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Dolores Garcia-Toral, Raul Mendoza-Baez, Ernesto Chigo-Anota, Antonio Flores-Riveros, Victor M. Vazquez-Baez, Gregorio Hernandez Cocoletzi, Juan Francisco Rivas-Silva
Summary: Based on DFT calculations, the structural and electronic properties of BPNTs were analyzed in relation to chirality. The results showed that the diameter of BPNTs increased linearly with the chiral index n for both chiralities. The (3,3) BPNT was found to be the most stable structure with the largest global hardness value. The (5,0) BPNT exhibited strong electrophilic character and the highest conductivity due to a small |HOMO-LUMO| energy gap.
Review
Materials Science, Multidisciplinary
Xiaobin Liao, Ruihu Lu, Lixue Xia, Qian Liu, Huan Wang, Kristin Zhao, Zhaoyang Wang, Yan Zhao
Summary: This article discusses the potential of producing fuels and high-value chemicals through electrochemical conversion processes and highlights the importance of catalysts in advanced energy conversion technologies. It also explores the progress of Density Functional Theory (DFT) as a computational tool and the key descriptors and analysis tools for evaluating electrocatalytic performances.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Optics
Xi Liu, Yujie Li, Dongdong Liu, Xiaosong Zhu, Xiaofan Zhang, Peixiang Lu
Summary: This study theoretically demonstrates the effects of quantum interferences among valence electrons with different crystal momenta in the high-order harmonic generation (HHG) in solids. It shows that electron pairs with opposite crystal momenta result in destructive interferences of even-order harmonics, leading to the observation of only odd orders in the harmonic spectra of semiconductor materials. Each harmonic plateau in the multiple-plateau spectrum is identified to be contributed by valence electrons within different crystal momentum zones. Additionally, solid-phase HHG in the below-band-gap region is significantly suppressed due to collective responses of multiple valence electrons.
Article
Chemistry, Multidisciplinary
Yimin Zhao, Quan Zhang, Yunzhang Li, Liang Chen, Ruobing Yi, Bingquan Peng, Dexi Nie, Lihao Zhang, Guosheng Shi, Shengli Zhang, Lei Zhang
Summary: The discovery of special matter phases in low-dimensional systems and on specific substrates provides insights into fundamental mechanisms of nature. In this study, the authors used cryo-electron microscopy to directly observe and characterize the prevalent and stable graphitic-like alkali halide hexagonal phases. These phases were spontaneously formed in a quasi-2D confined space between reduced graphene oxide layers under ambient conditions. The findings highlight the effects of the substrate and confined space on the formation of specific matter phases.
Article
Materials Science, Multidisciplinary
Shilun Li, Hongliang Zhang, Tianle Wang, Jing Xu, Junlang Chen, Liang Chen, Guoquan Zhou, Wei Liu, Zhigang Li, Zhichao Ruan, Shangshen Feng
Summary: This study synthesized a series of FeGa micro-nano spherical shell arrays using micro-nano optical technology, and achieved efficient and reversible control of the intensities and positions of light peaks in the optical absorption spectra by adjusting an external magnetic field, providing a method to control light absorption.
Article
Engineering, Chemical
Shuai Wang, Shanshan Liang, Liang Chen, Haiping Fang
Summary: Graphene-based membranes have gained attention in desalination and water treatment due to their unique physical and chemical characteristics. However, the permeability-selectivity trade-off of graphene oxide membranes has limited their real-world applications. This study demonstrates the feasibility of small-flakes reduced graphene oxide membranes for nanofiltration, achieving higher water permeance and maintaining high rejection rates. The research sheds light on improving the performance and stability of graphene oxide-based membranes.
Article
Chemistry, Physical
Juan Yang, Pei Li, Zailing Song, Jie Li, Huan Yang, Fan Yan, Lu Li, Can Xu, Junlang Chen, Liang Chen
Summary: In this study, graphene quantum dots (GQDs) modified by scandium ions (Sc3+) were prepared to improve their photoluminescence (PL) properties in aqueous solution containing heavy metal ions. It was found that GQDs modified by other metal ions, such as aluminum (Al3+) and gallium (Ga3+), also exhibited similar results, confirming the universality of this approach.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Junfan Liu, Shuai Wang, Rujie Yang, Lu Li, Shanshan Liang, Liang Chen
Summary: In this study, a nacre-like structure membrane based on graphene oxide (GO) cross-linked by amino acid was fabricated. The membrane exhibited high water permeance and metal ions rejection, and showed stable separation performance for a long time.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yimin Zhao, Quan Zhang, Jianbing Ma, Ruobing Yi, Lu Gou, Dexi Nie, Xiaona Han, Lihao Zhang, Yuetian Wang, Xintong Xu, Zhe Wang, Liang Chen, Ying Lu, Shengli Zhang, Lei Zhang
Summary: By integrating high-temperature oxidation and pure-water incubation processes, Cu2O monocrystals with specific crystal planes and good conductivity were successfully synthesized on graphene oxide membranes. The assembly is attributed to the aggregation and attachment of Cu and O in the aqueous environment, as well as the cation-pi interactions between Cu2O and graphene oxide.
Article
Materials Science, Multidisciplinary
Songwei Zeng, Qiubo Pan, Zhijing Huang, Chenjie Gu, Tao Wang, Jinhui Xu, Zihan Yan, Feiyu Zhao, Pei Li, Yusong Tu, Yan Fan, Liang Chen
Summary: This research presents a self-powered humidity sensor with ultrafast response time and high selectivity to environmental stimuli. The sensor can be used in areas such as respiration monitoring, smart leaf surface humidity sensing, and energy harvesting.
MATERIALS & DESIGN
(2023)
Article
Multidisciplinary Sciences
Xinming Xia, Feng Zhou, Jing Xu, Zhongteng Wang, Jian Lan, Yan Fan, Zhikun Wang, Wei Liu, Junlang Chen, Shangshen Feng, Yusong Tu, Yizhou Yang, Liang Chen, Haiping Fang
Summary: By adding low amounts of aluminum ions, rapid and efficient desorption of ions on magnetite-graphene oxide can be achieved. This method has lower consumption of reagents and higher desorption rate compared to conventional methods, and can be applied for ion enrichment in various fields.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yunzhang Li, Yimin Zhao, Xing Liu, Yinwei Qiu, Zhenglin He, Shengli Zhang, Haiping Fang, Liang Chen, Lei Zhang, Guosheng Shi
Summary: This study utilizes cryo-electron microscopy and X-ray photoelectron spectroscopy to discover a novel 2D Li2Cl crystal with metallic properties. A high content of Li2Cl is prepared in reduced graphene oxide (rGO) membranes through vacuum filtration, exhibiting high areal capacitance. Furthermore, the Li2Cl-rGO membranes also exhibit heterostructure property and piezoelectricity, making them useful as humidity sensors. These findings open up possibilities for fabricating novel high-performance electronic devices, transistors, and sensors.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Shuai Wang, Liuyuan Zhu, Rujie Yang, Minliang Li, Fangfang Dai, Shiqi Sheng, Liang Chen, Shanshan Liang
Summary: In this study, a GO-PEI membrane with positively charged channels was constructed, demonstrating high selectivity and competitive Li+/Mg2+ separation performance. The membrane also showed excellent stability during the separation process. This work deepens the understanding of membrane ion selectivity and proposes a strategy for designing two-dimensional membrane structures from microscopic materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Ruobing Yi, Yimin Zhao, Liang Chen, Lei Zhang
Summary: In this research, a two-dimensional nanofluidic gradient structure (TNGS) inspired by cell membrane potential was developed. By utilizing the built-in hygroscopic gradient and redox reaction, the selective migration of calcium ions and protons was converted into electrical energy, resulting in a solid-state power source with sustained voltage output and high volumetric power density.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinming Xia, Yingying Huang, Bingquan Peng, Tao Wang, Ruobing Yi, Yimin Zhao, Jie Jiang, Fangfang Dai, Yan Fan, Pei Li, Yusong Tu, Lei Zhang, Haiping Fang, Liang Chen
Summary: A high-yield synthesis method for 2D abnormal crystals with unconventional stoichiometries is reported, and the unique electronic, magnetic, and optical properties of these crystals are demonstrated. By applying a negative potential, a more than tenfold increase in abnormal Na2Cl crystals with higher sodium content is achieved in rGOM. The crystals exhibit a square structure and piezoelectric behavior.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Liu, Yunhao Xie, Zan Tong, Jingchao Sun, Liang Chen, Jing Xu
Summary: Electrochemical reduction of CO2 to valuable multi-carbon products is a potential solution to environmental and energy crises. In this study, N-heterocyclic carbenes (NHCs) incorporated into a graphene lattice were found to effectively activate CO molecules and convert them into CH3OH, C2H4, and C2H5OH with low limiting potentials. The catalytic performance of these NHCs is attributed to charge transfer and strong hybridization between NHCs and CO molecules, resulting in high activity and selectivity for the conversion of CO to valuable C2-products.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Wei Liu, Jingchao Sun, Yunhao Xie, Liang Chen, Jing Xu
Summary: Introducing two classes of typical five-membered carbenes to a graphene lattice creates novel 2D heterogeneous N-heterocyclic carbene nanomaterials with distinct electronic properties and significant catalytic potential.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yunhao Xie, Liang Chen, Jing Xu, Wei Liu
Summary: This paper investigates the effects of hydrogenation and halogenation on biphenylene networks and shows that the electronic properties can be effectively regulated by controlling the functionalization concentration. The findings expand the potential applications of biphenylene networks in electronic devices and photocatalysis.
Article
Nanoscience & Nanotechnology
Spyridon G. Kosionis, Emmanuel Paspalakis
Summary: In this study, we theoretically investigate the pump-probe response and the four-wave mixing spectrum in a hybrid system composed of a semiconductor quantum dot and a spherical metal nanoparticle. Using a density matrix methodology, we calculate the absorption/gain, dispersion, and four-wave mixing spectra, and analyze their spectral characteristics. We also apply the metastate theory and the dressed-state picture to predict the positions of the spectral resonances.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
L. S. Lima
Summary: This study investigates quantum correlation and entanglement in the non-Hermitian Hubbard model. By analyzing quantum entanglement measures such as entanglement negativity and entropy, the effect of non-Hermitian imaginary hopping on the system is explored. It is found that in the large... limit, the non-Hermiticity reverses the behavior of the ground state energy and low-lying excitations.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Nam-Chol Ri, Chung-Sim Kim, Sang-Ryol Ri, Su-Il Ri
Summary: By decreasing the lattice thermal conductivity of GNR through chemical derivation and strain, enhancing the thermoelectric properties of the electron part can be an important method to approach PGEC. This paper proposes synthesized hybrid systems formed by chemical derivation in the middle parts of b-AGNRs, and investigates the band structures and thermoelectric properties of the electron part under different strains. The results show that the band gaps of the systems significantly increase under different strains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Le T. T. Phuong, Tran Cong Phong
Summary: This study investigates the effects of gas molecules adsorbed on /312-borophene on its electronic heat capacity and thermal Schottky anomaly. The results show that the adsorbed gas molecules have different impacts on the electronic heat capacity, leading to the generation of various new energy levels.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Tianyan Jiang, Jie Fang, Wentao Zhang, Maoqiang Bi, Xi Chen, Junsheng Chen
Summary: This paper investigates the adsorption and sensing properties of transition metal-doped WSSe gas-sensitive devices towards H2, CO, and CO2 gases related to thermal runaway in Li-ion batteries using density functional theory. The results show that Ti, Mn, and Mo dopants preferentially bind to the S-surface of the WSSe monolayer, and all three monolayers exhibit significantly improved sensing characteristics, with chemisorption towards CO. Band structure analysis suggests that the Ti-WSSe monolayer has the potential to be used as a resistive CO detection sensor. Recovery time calculations indicate the reuse capabilities of the gas-sensitive devices. Mn-WSSe monolayer shows potential for H2 detection, while Mo-WSSe monolayer is more suitable for CO2 detection. This work lays the foundation for potential gas-sensitive applications of WSSe monolayer in thermal runaway scenarios, advancing research in gas sensing domains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Olga A. Alekseeva, Aleksandr A. Naberezhnov, Ekaterina Yu. Koroleva, Aleksandr Fokin
Summary: This study investigates the temperature dependence of crystal structure and dielectric response in a nanocomposite material containing porous glasses and embedded sodium nitrate. The results reveal a crossover point in the temperature dependence of the order parameter of the structural transition in sodium nitrate nanoparticles, as well as a decrease in activation energy of sodium ions hopping conductivity during heating.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Lijun Cheng, Fang Cheng
Summary: This paper investigates the effects of electric and magnetic fields on the Goos-Hanchen (GH) shift in a semi-Dirac system. The results show that the magnitude and direction of the GH shift depend on various factors such as incidence angle, electric barrier height and width, and magnetic field. It is observed that there is a saltus step in GH shifts at the critical magnetic field, which decreases with increased potential barrier thickness. Additionally, the GH shift can be significantly enhanced by applying an electric field in the III region. These findings are important for the development of semi-Dirac based electronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Alexander K. Fedotov, Uladzislaw E. Gumiennik, Julia A. Fedotova, Janusz Przewoznik, Czeslaw Kapusta
Summary: The study conducted an improved analysis of carrier transport in single-layer graphene and hybrid structures, showing the coexistence of negative and positive contributions in magnetoresistive effect. Various models were used to analyze the dependences on temperature and magnetic field, providing insights into the behavior of electrical resistance in the structures.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xuhui Peng, Tao Chen, Ruotong Chen, Shizheng Chen, Qing Zhao, Xiaoping Huang
Summary: In this study, a novel method was proposed to design and fabricate optoelectronic devices with highly precise controlled photorefractive liquid crystal structures. By utilizing quantum dots and electric tuning, a regular periodic grating was formed in a quantum dot-doped liquid crystal volume illuminated by a laser standing evanescent wave field. The obtained optical diffraction pattern showed equally spaced light spots and high diffraction efficiency, indicating a significant change in the refractive index of the nanostructured device.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Kai-Hua Yang, Xiao-Hui Liang, Huai-Yu Wang, Yi-Fan Wu, Qian-Qian Yang
Summary: In this work, a theoretical model is proposed to achieve the controllability of quantum interference and decoherence. The effects of intralead Coulomb interaction, interdot tunneling, and electron-phonon interactions on differential conductance are investigated. The results show the appearance of destructive interference, Fano interference, and negative differential conductance in strong dot-lead tunneling regions, while a characteristic pattern of positive and negative differential conductances appears in the weak dot-lead tunneling regime.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xueying Wang, Qian Ma, Qi Zhang, Yi Wang, Lingyu Li, Dongheng Zhao, Zhiqiang Liu
Summary: Porous double-channel alpha-Fe2O3/SnO2 heterostructures with tunable surface/interface transport mechanism were successfully fabricated by electrospinning and calcination. These heterostructures exhibited a large specific surface area, providing more active sites and enhanced adsorption capacity. The optimal composite materials showed the highest response value and the fastest response/recovery times to DMF, along with good cycling performance, long-term stability, and high gas selectivity.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Donglin Guo, Zhengmeng Xu, Chunhong Li, Kejian Li, Bin Shao, Xianfu Luo, Jianchun Sun, Yilong Ma
Summary: Using full electron-phonon interactions and the Boltzmann transport equation, this study investigates the phonon scattering channel and electrical properties of graphene under anharmonic phonon renormalization (APRN). The results show that the APRN reduces the phonon frequency and three-phonon phase space with increasing temperature, affecting the acoustic branch more than the optical branch. The thermal conductivity of graphene decreases after considering three- and four-phonon scattering, and the primary scattering channels are identified. Furthermore, the APRN increases the strength of electron-phonon coupling and leads to an increase in n-type electric resistance at room temperature.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Hongping Zhao, Man Zhao, Dayong Jiang
Summary: The study proposes a broadband photodetector with high response, high sensitivity, and controllable band by integrating quantum dots and highly conductive materials. The PD composed of ZnO film/PbS quantum dots heterostructure shows excellent photoresponse performance in the UV-Vis-NIR range, with the peak responsivity increased by 550%, accompanied by significant red shift, faster response, and recovery speed. By using RF magnetron sputtering to prepare ultra-thin ZnO film, the impact of PbS quantum dots on the photoelectric properties of ZnO film is comprehensively and systematically discussed.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Ye Xuan Meng, Liwei Jiang, Yisong Zheng
Summary: Manipulating magnetism by electrical means is an effective method for realizing ultra-low power spintronic-integrated circuits. In this study, it is demonstrated that the two-dimensional semiconductor material InO monolayer can be tuned to a half-metallic state by applying a gate voltage, providing theoretical guidance for adjusting two-dimensional magnetic semiconductors.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Anusha Kachu, Aalu Boda
Summary: In this research, we investigated the impact of confinement nature on a neutral hydrogenic donor impurity in a quantum dot. The study demonstrated intriguing behavior in response to changes in potential shape, quantum dot parameters, and spin-orbit coupling strengths. The findings provide valuable insights into the fundamental physics of quantum dots and impurities and can aid in the design and optimization of QD-based technologies.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
