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学者姓名：王晓蕾
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摘要 ：
Achieving highly efficient spin injection has been a challenging problem for a long time in spin logic devices. The chiral-induced spin selectivity (CISS) effect could induce spin polarization of electron transmission by chiral structure, providing a promising solution to resolve the above bottleneck. In this work, the significant CISS effect by self-assembled chiral organic molecules with helical structure was achieved on the copper (Cu) substrate covered with gold (Au) layer. We find that the spin polarization induced by the chiral molecules is more than 80%. Serving as an ultra efficient spin filter, the chiral organic molecules is demonstrated to be an effective way to generate pure spin currents and achieve highly efficient spin injection without ferromagnetic electrodes or external magnetic field. Based on these properties, a CISS based reconfigurable logic device is proposed. Due to the high spin injection efficiency, this CISS based device can realize 6 different logic operations with low energy consumption (1.2 pJ) and high speed (3.6 ns).
关键词 ：
self-assembled monolayer self-assembled monolayer Chiral organic molecules Chiral organic molecules Atomic measurements Atomic measurements Voltage measurement Voltage measurement spin injection efficiency spin injection efficiency Superconducting magnets Superconducting magnets Magnetic moments Magnetic moments chiral-induced spin selectivity chiral-induced spin selectivity Pollution measurement Pollution measurement Voltage control Voltage control reconfigurable logic device reconfigurable logic device Switches Switches
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| GB/T 7714 | Yang, Qianqian , Zhang, Zhizhong , Jiang, Xing'an et al. Realization of High Spin Injection Through Chiral Molecules and Its Application in Logic Device [J]. | IEEE ELECTRON DEVICE LETTERS , 2022 , 43 (11) : 1862-1865 . |
| MLA | Yang, Qianqian et al. "Realization of High Spin Injection Through Chiral Molecules and Its Application in Logic Device" . | IEEE ELECTRON DEVICE LETTERS 43 . 11 (2022) : 1862-1865 . |
| APA | Yang, Qianqian , Zhang, Zhizhong , Jiang, Xing'an , Wang, Xiaolei , Wang, Xueyun , Shang, Zixuan et al. Realization of High Spin Injection Through Chiral Molecules and Its Application in Logic Device . | IEEE ELECTRON DEVICE LETTERS , 2022 , 43 (11) , 1862-1865 . |
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摘要 ：
Spintronics and molecular chemistry have achieved remarkable achievements separately. Their combination can apply the superiority of molecular diversity to intervene or manipulate the spin-related properties. It inevitably brings in a new type of functional devices with a molecular interface, which has become an emerging field in information storage and processing. Normally, spin polarization has to be realized by magnetic materials as manipulated by magnetic fields. Recently, chiral-induced spin selectivity (CISS) was discovered surprisingly that non-magnetic chiral molecules can generate spin polarization through their structural chirality. Here, the recent progress of integrating the strengths of molecular chemistry and spintronics is reviewed by introducing the experimental results, theoretical models, and device performances of the CISS effect. Compared to normal ferromagnetic metals, CISS originating from a chiral structure has great advantages of high spin polarization, excellent interface, simple preparation process, and low cost. It has the potential to obtain high efficiency of spin injection into metals and semiconductors, getting rid of magnetic fields and ferromagnetic electrodes. The physical mechanisms, unique advantages, and device performances of CISS are sequentially clarified, revealing important issues to current scientific research and industrial applications. This mini-review points out a key technology of information storage for future spintronic devices without magnetic components.
关键词 ：
molecular chemistry molecular chemistry spintronic devices spintronic devices spin injection spin injection information storage information storage chiral-induced spin selectivity chiral-induced spin selectivity
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| GB/T 7714 | Shang, Zixuan , Liu, Tianhan , Yang, Qianqian et al. Chiral-Molecule-Based Spintronic Devices [J]. | SMALL , 2022 , 18 (32) . |
| MLA | Shang, Zixuan et al. "Chiral-Molecule-Based Spintronic Devices" . | SMALL 18 . 32 (2022) . |
| APA | Shang, Zixuan , Liu, Tianhan , Yang, Qianqian , Cui, Shuainan , Xu, Kailin , Zhang, Yu et al. Chiral-Molecule-Based Spintronic Devices . | SMALL , 2022 , 18 (32) . |
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摘要 ：
Developing a single-phase self-rectifying memristor is desirable and functionally adaptive to dynamic environmental stimuli variations. Here, the authors report a single phase CuInP2S6 based memristor with continuously tunable current rectifying. Developing a single-phase self-rectifying memristor with the continuously tunable feature is structurally desirable and functionally adaptive to dynamic environmental stimuli variations, which is the pursuit of further smart memristors and neuromorphic computing. Herein, we report a van der Waals ferroelectric CuInP2S6 as a single memristor with superior continuous modulation of current and self-rectifying to different bias stimuli (sweeping speed, direction, amplitude, etc.) and external mechanical load. The synergetic contribution of controllable Cu+ ions migration and interfacial Schottky barrier is proposed to dynamically control the current flow and device performance. These outstanding sensitive features make this material possible for being superior candidate for future smart memristors with bidirectional operation mode and strong recognition to input faults and variations.
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| GB/T 7714 | Jiang, Xingan , Wang, Xueyun , Wang, Xiaolei et al. Manipulation of current rectification in van der Waals ferroionic CuInP2S6 [J]. | NATURE COMMUNICATIONS , 2022 , 13 (1) . |
| MLA | Jiang, Xingan et al. "Manipulation of current rectification in van der Waals ferroionic CuInP2S6" . | NATURE COMMUNICATIONS 13 . 1 (2022) . |
| APA | Jiang, Xingan , Wang, Xueyun , Wang, Xiaolei , Zhang, Xiangping , Niu, Ruirui , Deng, Jianming et al. Manipulation of current rectification in van der Waals ferroionic CuInP2S6 . | NATURE COMMUNICATIONS , 2022 , 13 (1) . |
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摘要 ：
Lateral effect photodiodes sense the position of a laser beam by measuring the change of current between opposite anodes and a common cathode. They either require a bias current or the current is photogenerated. In either case, their linearity is affected by the non-uniformity of the current distribution between the anodes. We here propose a bias-free, lateral photo-diode, which consists of a resistive layer forming an extended Schottky contact to an intrinsic semiconductor. In our sensor, the photo-generated carriers do not diffuse laterally. Rather, their localization under the laser-beam results in a reduction of the barrier height due to image force effect. An open-circuit voltage appears between two opposite electrodes that is linear with the laser-beam position. A tetra-lateral configuration, with four anodes at the edges of a square-shaped sensor, allows sensing in two dimensions. (c) 2021 Elsevier B.V. All rights reserved.
关键词 ：
Photo-detectors Photo-detectors Position sensing Position sensing Schottky junctions Schottky junctions Image force effect Image force effect
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| GB/T 7714 | Wang, Xiaolei , Sun, Xupeng , Zhai, Tianrui et al. A bias-free, lateral effect position sensor photo-detector [J]. | SENSORS AND ACTUATORS A-PHYSICAL , 2021 , 330 . |
| MLA | Wang, Xiaolei et al. "A bias-free, lateral effect position sensor photo-detector" . | SENSORS AND ACTUATORS A-PHYSICAL 330 (2021) . |
| APA | Wang, Xiaolei , Sun, Xupeng , Zhai, Tianrui , Yang, Qianqian , Cui, Shuainan , Zhang, Jie et al. A bias-free, lateral effect position sensor photo-detector . | SENSORS AND ACTUATORS A-PHYSICAL , 2021 , 330 . |
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摘要 ：
One of the most attractive characteristics of diluted ferromagnetic semiconductors is the possibility to modulate their electronic and ferromagnetic properties, coupled by itinerant holes through various means. A prominent example is the modification of Curie temperature and magnetic anisotropy by ion implantation and pulsed laser melting in III-V diluted magnetic semiconductors. In this study, to the best of our knowledge, we performed, for the first time, the co-doping of (In,Mn)As diluted magnetic semiconductors by Al by co-implantation subsequently combined with a pulsed laser annealing technique. Additionally, the structural and magnetic properties were systematically investigated by gradually raising the Al implantation fluence. Unexpectedly, under a well-preserved epitaxial structure, all samples presented weaken Curie temperature, magnetization, as well as uniaxial magnetic anisotropies when more aluminum was involved. Such a phenomenon is probably due to enhanced carrier localization introduced by Al or the suppression of substitutional Mn atoms.
关键词 ：
magnetic semiconductors magnetic semiconductors magnetic properties magnetic properties co-doping co-doping ion implantation ion implantation
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| GB/T 7714 | Yuan, Ye , Xie, Yufang , Yuan, Ning et al. The Al Doping Effect on Epitaxial (In,Mn)As Dilute Magnetic Semiconductors Prepared by Ion Implantation and Pulsed Laser Melting [J]. | MATERIALS , 2021 , 14 (15) . |
| MLA | Yuan, Ye et al. "The Al Doping Effect on Epitaxial (In,Mn)As Dilute Magnetic Semiconductors Prepared by Ion Implantation and Pulsed Laser Melting" . | MATERIALS 14 . 15 (2021) . |
| APA | Yuan, Ye , Xie, Yufang , Yuan, Ning , Wang, Mao , Heller, Rene , Kentsch, Ulrich et al. The Al Doping Effect on Epitaxial (In,Mn)As Dilute Magnetic Semiconductors Prepared by Ion Implantation and Pulsed Laser Melting . | MATERIALS , 2021 , 14 (15) . |
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摘要 ：
An ultrathin-film microring laser was fabricated using inkjet printing and a simple lift-off technique. Whispering-gallery-mode lasing was observed under optically pumped conditions in the film. The freestanding laser can be transferred to arbitrary surfaces for multifunctional applications, such as acoustic and relative humidity sensing. Using the first eigenmode of a membrane vibration, an acoustic sensor with a 0.15 Pa limit of detection was demonstrated via laser bandwidth broadening. A relative humidity sensor with a 1.1% limit of detection via wavelength shifts was demonstrated by placing the device on an optical fiber facet. These cost-effective, transferrable, multifunctional laser sensors will have many additional applications.
关键词 ：
humidity sensing humidity sensing microring laser microring laser acoustic sensing acoustic sensing ultrathin ultrathin transferrable transferrable
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| GB/T 7714 | Xu Zhiyang , Zhai Tianrui , Shi Xiaoyu et al. Multifunctional Sensing Based on an Ultrathin Transferrable Microring Laser. [J]. | ACS applied materials & interfaces , 2021 , 13 (16) : 19324-19331 . |
| MLA | Xu Zhiyang et al. "Multifunctional Sensing Based on an Ultrathin Transferrable Microring Laser." . | ACS applied materials & interfaces 13 . 16 (2021) : 19324-19331 . |
| APA | Xu Zhiyang , Zhai Tianrui , Shi Xiaoyu , Tong Junhua , Wang Xiaolei , Deng Jinxiang . Multifunctional Sensing Based on an Ultrathin Transferrable Microring Laser. . | ACS applied materials & interfaces , 2021 , 13 (16) , 19324-19331 . |
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摘要 ：
Among the efforts to improve the performances of microlasers, optimization of the gain properties and cavity parameters of these lasers has attracted significant attention recently. Distributed feedback lasers, as one of the most promising candidate technologies for electrically pumped microlasers, can be combined with dual-gratings. This combination provides additional freedom for the design of the laser cavity. Here, a holographic dual-grating is designed to improve the distributed feedback laser performance. The holographic dual-grating laser consists of a colloidal quantum dot film with two parallel gratings, comprising first-order (210 nm) and second-order (420 nm) gratings that can be fabricated easily using a combination of spin coating and interference lithography. The feedback and the output from the cavity are controlled using the first-order grating and the second-order grating, respectively. Through careful design and analysis of the dual-grating, a balance is achieved between the feedback and the cavity output such that the lasing threshold based on the dual-grating is nearly half the threshold of conventional distributed feedback lasers. Additionally, the holographic dual-grating laser shows a high level of stability because of the high stability of the colloidal quantum dots against photobleaching.
关键词 ：
microlasers microlasers dual-gratings dual-gratings holographic holographic
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| GB/T 7714 | Zhai, Tianrui , Han, Liang , Ma, Xiaojie et al. Low-Threshold Microlasers Based on Holographic Dual-Gratings [J]. | NANOMATERIALS , 2021 , 11 (6) . |
| MLA | Zhai, Tianrui et al. "Low-Threshold Microlasers Based on Holographic Dual-Gratings" . | NANOMATERIALS 11 . 6 (2021) . |
| APA | Zhai, Tianrui , Han, Liang , Ma, Xiaojie , Wang, Xiaolei . Low-Threshold Microlasers Based on Holographic Dual-Gratings . | NANOMATERIALS , 2021 , 11 (6) . |
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摘要 ：
Because of its limited light field mode and high Q value, the whispering-gallery-mode (WGM) cavity has been widely studied. In this study, we propose a simple, rapid, low-cost and no-manufacturing technology method that we call the drip-coating method to obtain an irregular cavity with arbitrary boundaries. By using polyvinyl alcohol (PVA) solution doped with rhodamine 6G, the irregular cavity with arbitrary boundaries was drip-coated on a high-reflection mirror, forming a WGM laser. The sample was pumped with a 532 nm pulsed laser, and the single-mode WGM and multi-WGM lasing were obtained. All WGMs are the vertical oscillation modes, which originate from both the total internal reflection of the PVA/air interface and vertical reflection of the PVA/mirror interface. The other boundaries of the cavity were not involved in the reflection and could have any shape. The mechanism of producing single-mode lasing is due to the action of the loss-gain cavity. Multi-WGM lasing is attributed to at least two groups of different WGMs existing in an irregular cavity. This can be confirmed by using a microsphere model and intensity correlation method. These results may provide an alternative for the design of WGM lasers.
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| GB/T 7714 | Su, Dan , Zhai, Tianrui , Ge, Kun et al. WGM lasing in irregular cavities with arbitrary boundaries [J]. | NANOSCALE , 2021 , 13 (43) : 18349-18355 . |
| MLA | Su, Dan et al. "WGM lasing in irregular cavities with arbitrary boundaries" . | NANOSCALE 13 . 43 (2021) : 18349-18355 . |
| APA | Su, Dan , Zhai, Tianrui , Ge, Kun , Zhang, Shuai , Xu, Zhiyang , Tong, Junhua et al. WGM lasing in irregular cavities with arbitrary boundaries . | NANOSCALE , 2021 , 13 (43) , 18349-18355 . |
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摘要 ：
Surface segregation constitutes an efficient approach to enhance the alkaline hydrogen evolution reaction (HER) activity of bimetallic PtxNiy nanoalloys. Herein, a new strategy is proposed by utilizing the small gas molecule of H2 as the structure directing agent (SDA) to in situ induce Pt surface segregations over a series of PtNi5-n samples with extremely low Pt doping (Pt/Ni = 0.2). Impressively, the sample of PtNi5-0.3 synthesized under 0.3 MPa H2 delivers an extremely low overpotential of 26.8 mV (−10 mA cm−2) and Tafel slope of 19.2 mV dec−1, which is superior to most of the previously reported PtxNiy electrocatalysts. This is substantially related to the strong H2 in situ inducing effect to generate Pt-rich@Ni-rich core-shell nanostructure of PtNi5-0.3 with an ultrahigh Pt surface content of 46%. The specific mechanistic effects of H2 during the PtNi5-n synthesis process are well illustrated based on the combined experimental and theoretical studies. The density functional theory mechanism simulations further unravel that the evolved active site of PtNi5-n can efficiently reduce the reaction Gibbs free energies; especially for the scenario of PtNi5-0.3, the downward-shifted d band center of the Pt active site significantly reduces the Pt-H bond strength, eventually resulting in the lowest absolute value of ΔGH. © 2021 Wiley-VCH GmbH
关键词 ：
Binary alloys Binary alloys Density functional theory Density functional theory Electrocatalysts Electrocatalysts Gibbs free energy Gibbs free energy Hydrogen evolution reaction Hydrogen evolution reaction Platinum Platinum Surface segregation Surface segregation
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| GB/T 7714 | Zhang, Cong , Liang, Xin , Xu, Ruinian et al. H2 In Situ Inducing Strategy on Pt Surface Segregation Over Low Pt Doped PtNi5 Nanoalloy with Superhigh Alkaline HER Activity [J]. | Advanced Functional Materials , 2021 , 31 (14) . |
| MLA | Zhang, Cong et al. "H2 In Situ Inducing Strategy on Pt Surface Segregation Over Low Pt Doped PtNi5 Nanoalloy with Superhigh Alkaline HER Activity" . | Advanced Functional Materials 31 . 14 (2021) . |
| APA | Zhang, Cong , Liang, Xin , Xu, Ruinian , Dai, Chengna , Wu, Bin , Yu, Gangqiang et al. H2 In Situ Inducing Strategy on Pt Surface Segregation Over Low Pt Doped PtNi5 Nanoalloy with Superhigh Alkaline HER Activity . | Advanced Functional Materials , 2021 , 31 (14) . |
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摘要 ：
The shape-function relationship for designing catalysts is always a focus to study. This article describes the influence of Ni catalysts surface structure on acetone hydrogenation. We report H-2 as a morphology-directing agent to selectively synthesize branched Ni (Ni-BN), which exposes substantial stepped Ni(3 2 2) facet (similar to 99%) that has elegant activity for acetone hydrogenation. In contrary, Ni nanoparticle (Ni-NP) prepared without H-2 mainly exposes flat Ni(1 1 1) and Ni(1 0 0) facets and these facets perform less activity for acetone hydrogenation to isopropanol. Subsequently, DFT studies of reaction mechanism on different facets reveal that the step site in Ni(3 2 2) facet displays lower activation barriers than that of Ni(1 1 1) and Ni(1 0 0) facets. With help of kinetic growth model and microkinetics study, quantitative shape-function relationship of Ni-BN for acetone hydrogenation to isopropanol can be further established. This work not only clarifies the catalytic activity of Ni on acetone hydrogenation but also provides a method accessing the intrinsic kinetics of the reaction.
关键词 ：
Acetone hydrogenation Acetone hydrogenation Branched nickel Branched nickel H-2 self-select H-2 self-select High-index facet High-index facet Shape-function relationship Shape-function relationship
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| GB/T 7714 | Wang, Xiaolei , Liu, Ning , Xu, Ruinian et al. Insights into the shape effect of H-2 self-selective Ni catalysts for efficient acetone hydrogenation [J]. | APPLIED SURFACE SCIENCE , 2021 , 536 . |
| MLA | Wang, Xiaolei et al. "Insights into the shape effect of H-2 self-selective Ni catalysts for efficient acetone hydrogenation" . | APPLIED SURFACE SCIENCE 536 (2021) . |
| APA | Wang, Xiaolei , Liu, Ning , Xu, Ruinian , Chen, Biaohua , Dai, Chengna , Wu, Bin et al. Insights into the shape effect of H-2 self-selective Ni catalysts for efficient acetone hydrogenation . | APPLIED SURFACE SCIENCE , 2021 , 536 . |
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