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Yang XF, Kuang YW, Yu HL, Shao ZG, Zhang J, Feng JF, Chen XS, Liu YS. Zigzag C 2N nanoribbons with edge modifications as multi-functional spin devices. Phys Chem Chem Phys 2017; 19:12538-12545. [PMID: 28470310 DOI: 10.1039/c6cp08148g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Recently, a holey two-dimensional (2D) C2N crystal with a wide band gap has been successfully synthesized. However, its non-magnetic property largely limits real applications in spintronics. Here we find that edge magnetism can be introduced by tailoring the holey 2D C2N crystal into nanoribbons with zigzag edges. When edge N atoms are bare or passivated by H atoms, the device can be used to design high-performance thermospin devices and thermal rectifiers. This is ascribed to the emergence of a spin semiconducting property with a wide band gap. Moreover, if the edge N atoms are passivated by O atoms, the device shows a half-metallic property; meanwhile an obvious spin Seebeck effect can also be observed when a temperature difference is applied across the device.
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Affiliation(s)
- X F Yang
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
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Yang XF, Kuang YW, Liu YS, Zhang DB, Shao ZG, Yu HL, Hong XK, Feng JF, Chen XS, Wang XF. Carbon-based molecular devices: Fano effects controlled by the molecule length and the gate voltage. Nanoscale 2016; 8:15712-15719. [PMID: 27528438 DOI: 10.1039/c6nr03451a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fano effect is an important quantum phenomenon in mesoscopic systems, which arises from an interference between the localized state and the extended state. Here we observe an obvious Fano effect near the Fermi level in an all-carbon molecular device consisting of an acene molecule sandwiched between two zigzag graphene nanoribbon (ZGNR) electrodes. By increasing the length of the molecule, an extended state gradually evolves into a localized state. With the aid of the nearby extended state, a Fano effect is achieved. Using a gate voltage, we can easily tune the Fano effect induced by the single-transmission channel. When the spin degree of freedom is involved, the all-carbon device can show a half-metallic property with positive or negative 100% spin polarization at the Fermi level under the gate voltage; meanwhile the spin thermoelectric effect can also be enhanced.
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Affiliation(s)
- X F Yang
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - Y W Kuang
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - Y S Liu
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China. and National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China.
| | - D B Zhang
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - Z G Shao
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - H L Yu
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - X K Hong
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - J F Feng
- College of Physics and Electronic Engineering, Changshu Institute of Technology and Jiangsu Laboratory of Advanced Functional materials, Changshu 215500, China.
| | - X S Chen
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China.
| | - X F Wang
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006, China
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Wang FS, Zhang JL, Shao ZG, Liu YF. Donor dendritic cell proliferation and migration in hepatic allografts by pretransplant intraportal infusion of recipient blood into donor rats. Transplant Proc 2011; 43:3946-54. [PMID: 22172877 DOI: 10.1016/j.transproceed.2011.08.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 06/14/2011] [Accepted: 08/29/2011] [Indexed: 10/14/2022]
Abstract
INTRODUCTION We have reported that recipient blood transfusion pretransplant prolongs hepatic allograft survival in rats. This study further investigated the mechanisms of the phenomenon. MATERIALS AND METHODS Male LEW and ACI rats were used as liver transplant recipients and donors, respectively. Experimental animals were divided into control; treatment experimental; and intraportally transfused (1 mL recipient blood) at 7 days before transplantation. RESULTS Rat survival time was significantly longer among the experiment versus the control group. A large number of donor-source dendritic cells were detected among infiltrating cells in the liver and spleen in the experimental group. CONCLUSION We concluded that the prolonged survival of hepatic allograft in these rats was associated with donor dendritic cell proliferation and migration.
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Affiliation(s)
- F S Wang
- Department of General Surgery, the First Hospital of China Medical University, Shenyang, China.
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Lin WF, Jin JM, Christensen PA, Zhu F, Shao ZG. IN-SITU FT-IR SPECTROSCOPIC STUDIES OF FUEL CELL ELECTRO-CATALYSIS: FROM SINGLE-CRYSTAL TO NANOPARTICLE SURFACES. CHEM ENG COMMUN 2007. [DOI: 10.1080/00986440701569242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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