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Sohn A, Hwang HJ, Zhao P, Kim W, Jung JH, Kang L, Choi D, Kim SW. Boosting the Output Performance of the MoS 2 Monolayer-Based Piezoelectric Nanogenerator by Artificial Dual Strain Concentration. ACS Appl Mater Interfaces 2024; 16:1317-1325. [PMID: 38118048 DOI: 10.1021/acsami.3c13497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Piezoelectric nanogenerators (PENGs) with molybdenum disulfide (MoS2) monolayers have been intensively studied owing to their superior mechanical durability and stability. However, the limited output performance resulting from a small active area and low strain levels continues to pose a significant challenge that should be overcome. Herein, we report a novel strategy for the epoch-making output performance of a PENG with a MoS2 monolayer by adopting the additive strain concentration concept. The simulation study indicates that strain in the MoS2 monolayer can be initially augmented by the wavy structure resulting from the prestretched poly(dimethylsiloxane) (PDMS) and is further increased through flexural deformation (i.e., bending). Based on these studies, we have developed concentrated strain-applied PENGs with MoS2 monolayers. The wavy structures effectively applied strain to the MoS2 monolayer and generated a piezoelectric output voltage and current of around 580 mV and 47.5 nA, respectively. Our innovative approach to enhancing the performance of PENGs with MoS2 monolayers through the artificial dual strain concept has led to groundbreaking results, achieving the highest recorded output voltage and current for PENGs based on two-dimensional (2D) materials, which provides unique opportunities for the 2D-based energy harvesting field and structural insight into how to improve the net strain on 2D materials.
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Affiliation(s)
- Ahrum Sohn
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hee Jae Hwang
- Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pin Zhao
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Wook Kim
- Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae-Hwan Jung
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Lixing Kang
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Dukhyun Choi
- Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang-Woo Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Human-Oriented Triboelectric Energy Harvesting, Yonsei University, Seoul 03722, Republic of Korea
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Sohn A, Kim C, Jung JH, Kim JH, Byun KE, Cho Y, Zhao P, Kim SW, Seol M, Lee Z, Kim SW, Shin HJ. Precise Layer Control and Electronic State Modulation of a Transition Metal Dichalcogenide via Phase-Transition-Induced Growth. Adv Mater 2022; 34:e2103286. [PMID: 34309090 DOI: 10.1002/adma.202103286] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/19/2021] [Indexed: 06/13/2023]
Abstract
Wafer-scale growth of transition metal dichalcogenides with precise control over the number of layers, and hence the electronic state is an essential technology for expanding the practical application of 2D materials. Herein, a new growth method, phase-transition-induced growth (PTG), is proposed for the precisely controlled growth of molybdenum disulfide (MoS2 ) films consisting of one to eleven layers with spatial uniformity on a 2 in. wafer. In this method, an energetically unstable amorphous MoSx Oy (a-MoSx Oy ) phase is effectively converted to a thermodynamically stable crystalline MoS2 film. The number of MoS2 layers is readily controlled layer-by-layer by controlling the amount of Mo atoms in a-MoSx Oy , which is also applicable for the growth of heteroatom-inserted MoS2 . The electronic states of intrinsic and Nb-inserted MoS2 with one and four layers grown by PTGare are analyzed based on their work functions. The work function of monolayer MoS2 effectively increases with the substitution of Nb for Mo. As the number of layers increases to four, charge screening becomes weaker, dopant ionization becomes easier, and ultimately the work function increases further. Thus, better electronic state modulation is achieved in a thicker layer, and in this respect, PTG has the advantage of enabling precise control over the film thickness.
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Affiliation(s)
- Ahrum Sohn
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Changhyun Kim
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
| | - Jae-Hwan Jung
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Jung Hwa Kim
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Kyung-Eun Byun
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
| | - Yeonchoo Cho
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
| | - Pin Zhao
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Sang Won Kim
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
| | - Minsu Seol
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
| | - Zonghoon Lee
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Hyeon-Jin Shin
- Samsung Advanced Institute of Technology, Suwon, 443-803, Republic of Korea
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Sohn A, Zhang Y, Chakraborty A, Yu C. Sustainable power generation via hydro-electrochemical effects. Nanoscale 2022; 14:4188-4194. [PMID: 35234234 DOI: 10.1039/d1nr07748a] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Recent efforts towards energy scavenging with eco-friendly methods and abundant water look very promising for powering wearables and distributed electronics. However, the time duration of electricity generation is typically too short, and the current level is not sufficient to meet the required threshold for the proper operation of electronics despite the relatively large voltage. This work newly introduced an electrochemical method in combination with hydro-effects in order to extend the energy scavenging time and boost the current. Our device consists of corroded porous steel electrodes whose corrosion overpotential was lowered when the water concentration was increased and vice versa. Then a potential difference was created between two electrodes, generating electricity via the hydro-electrochemical method up to an open-circuit voltage of 750 mV and a short-circuit current of 90 μA cm-2. Furthermore, electricity was continuously generated for more than 1500 minutes by slow water diffusion against gravity from the bottom electrode. Lastly, we demonstrated that our hydro-electrochemical power generators successfully operated electronics, showing the feasibility of offering electrical power for sufficiently long time periods in practice.
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Affiliation(s)
- Ahrum Sohn
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA.
| | - Yufan Zhang
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - Anirban Chakraborty
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA.
| | - Choongho Yu
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA.
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
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Qiao H, Zhao P, Kwon O, Sohn A, Zhuo F, Lee D, Sun C, Seol D, Lee D, Kim S, Kim Y. Mixed Triboelectric and Flexoelectric Charge Transfer at the Nanoscale. Adv Sci (Weinh) 2021; 8:e2101793. [PMID: 34390211 PMCID: PMC8529448 DOI: 10.1002/advs.202101793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/17/2021] [Indexed: 05/05/2023]
Abstract
The triboelectric effect is a ubiquitous phenomenon in which the surfaces of two materials are easily charged during the contact-separation process. Despite the widespread consequences and applications, the charging mechanisms are not sufficiently understood. Here, the authors report that, in the presence of a strain gradient, the charge transfer is a result of competition between flexoelectricity and triboelectricity, which could enhance charge transfer during triboelectric measurements when the charge transfers of both effects are in the same direction. When they are in the opposite directions, the direction and amount of charge transfer could be modulated by the competition between flexoelectric and triboelectric effects, which leads to a distinctive phenomenon, that is, the charge transfer is reversed with varying forces. The subsequent results on the electrical power output signals from the triboelectrification support the proposed mechanism. Therefore, the present study emphasizes the key role of the flexoelectric effect through experimental approaches, and suggests that both the amount and direction of charge transfer can be modulated by manipulating the mixed triboelectric and flexoelectric effects. This finding may provide important information on the triboelectric effect and can be further extended to serve as a guideline for material selection during a nanopatterned device design.
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Affiliation(s)
- Huimin Qiao
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- Research Center for Advanced Materials TechnologySungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Pin Zhao
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Owoong Kwon
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- Research Center for Advanced Materials TechnologySungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Ahrum Sohn
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Fangping Zhuo
- Department of Materials and Earth SciencesTechnical University of Darmstadt64287DarmstadtGermany
| | - Dong‐Min Lee
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Changhyo Sun
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- Research Center for Advanced Materials TechnologySungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Daehee Seol
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Daesu Lee
- Department of PhysicsPohang University of Science & Technology (POSTECH)Pohang37673Republic of Korea
| | - Sang‐Woo Kim
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT) and Samsung Advanced Institute for Health Sciences & Technology (SAIHST)Sungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Yunseok Kim
- School of Advanced Materials and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- Research Center for Advanced Materials TechnologySungkyunkwan University (SKKU)Suwon16419Republic of Korea
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Kim JH, Kim S, Park SO, Jung GY, Song S, Sohn A, Kim S, Kwak SK, Kwon S, Lee Z. Antiphase Boundaries as Faceted Metallic Wires in 2D Transition Metal Dichalcogenides. Adv Sci (Weinh) 2020; 7:2000788. [PMID: 32775161 PMCID: PMC7404160 DOI: 10.1002/advs.202000788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Antiphase boundaries (APBs) in 2D transition metal dichalcogenides have attracted wide interest as 1D metallic wires embedded in a semiconducting matrix, which could be exploited in fully 2D-integrated circuits. Here, the anisotropic morphologies of APBs (i.e., linear and saw-toothed APBs) in the nanoscale are investigated. The experimental and computational results show that despite their anisotropic nanoscale morphologies, all APBs adopt a predominantly chalcogen-oriented dense structure to maintain the energetically most stable atomic configuration. Moreover, the effect of the nanoscale morphology of an APB on electron transport from two-probe field effect transistor measurements is investigated. A saw-toothed APB has a considerably lower electron mobility than a linear APB, indicating that kinks between facets are the main factors of scattering. The observations contribute to the systematical understanding of the faceted APBs and its impact on electrical transport behavior and it could potentially extend the applications of 2D materials through defect engineering to achieve the desired properties.
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Affiliation(s)
- Jung Hwa Kim
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
- Center for Multidimensional Carbon MaterialsInstitute for Basic Science (IBS)Ulsan44919Republic of Korea
| | - Se‐Yang Kim
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Sung O. Park
- Department of Energy EngineeringSchool of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Gwan Yeong Jung
- Department of Energy EngineeringSchool of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Seunguk Song
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Ahrum Sohn
- School of Advanced Materials Science and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Sang‐Woo Kim
- School of Advanced Materials Science and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Sang Kyu Kwak
- Center for Multidimensional Carbon MaterialsInstitute for Basic Science (IBS)Ulsan44919Republic of Korea
- Department of Energy EngineeringSchool of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Soon‐Yong Kwon
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Zonghoon Lee
- School of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
- Center for Multidimensional Carbon MaterialsInstitute for Basic Science (IBS)Ulsan44919Republic of Korea
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Lee BH, Cho KS, Lee DY, Sohn A, Lee JY, Choo H, Park S, Kim SW, Kim S, Lee SY. Investigation on energy bandgap states of amorphous SiZnSnO thin films. Sci Rep 2019; 9:19246. [PMID: 31848440 PMCID: PMC6917747 DOI: 10.1038/s41598-019-55807-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/11/2019] [Indexed: 11/24/2022] Open
Abstract
The variation in energy bandgaps of amorphous oxide semiconducting SiZnSnO (a-SZTO) has been investigated by controlling the oxygen partial pressure (Op). The systematic change in Op during deposition has been used to control the electrical characteristics and energy bandgap of a-SZTO. As Op increased, the electrical properties degraded, while the energy bandgap increased systematically. This is mainly due to the change in the oxygen vacancy inside the a-SZTO thin film by controlling Op. Changes in oxygen vacancies have been observed by using X-ray photoelectron spectroscopy (XPS) and investigated by analyzing the variation in density of states (DOS) inside the energy bandgaps. In addition, energy bandgap parameters, such as valence band level, Fermi level, and energy bandgap, were extracted by using ultraviolet photoelectron spectroscopy, Kelvin probe force microscopy, and high-resolution electron energy loss spectroscopy. As a result, it was confirmed that the difference between the conduction band minimum and the Fermi level in the energy bandgap increased systematically as Op increases. This shows good agreement with the measured results of XPS and DOS analyses.
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Affiliation(s)
- Byeong Hyeon Lee
- Department of Microdevice Engineering, Korea University, Seoul, 136-701, South Korea.,Research Institute of Advanced Semiconductor Convergence Technology, Cheongju, 28503, South Korea
| | - Kyung-Sang Cho
- Imaging Device Laboratory, Samsung Advanced Institute of Technology, Suwon, 16678, South Korea
| | - Doo-Yong Lee
- Department of Physics, Pusan National University, Busan, 609-735, South Korea
| | - Ahrum Sohn
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Ji Ye Lee
- Department of Semiconductor Engineering, Cheongju University, Cheongju, 28503, South Korea
| | - Hyuck Choo
- Imaging Device Laboratory, Samsung Advanced Institute of Technology, Suwon, 16678, South Korea
| | - Sungkyun Park
- Department of Physics, Pusan National University, Busan, 609-735, South Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Sangsig Kim
- Department of Microdevice Engineering, Korea University, Seoul, 136-701, South Korea
| | - Sang Yeol Lee
- Department of Semiconductor Engineering, Cheongju University, Cheongju, 28503, South Korea. .,Research Institute of Advanced Semiconductor Convergence Technology, Cheongju, 28503, South Korea.
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Lee BH, Sohn A, Kim S, Lee SY. Mechanism of carrier controllability with metal capping layer on amorphous oxide SiZnSnO semiconductor. Sci Rep 2019; 9:886. [PMID: 30696893 PMCID: PMC6351611 DOI: 10.1038/s41598-018-37530-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/04/2018] [Indexed: 11/09/2022] Open
Abstract
The change of electrical performance of amorphous SiZnSnO thin film transistors (a-SZTO TFTs) has been investigated depending on various metal capping layers on the channel layer by causing different contact property. It was confirmed that the change of electrical characteristics was sensitively dependent on the change of the capping layer materials on the same channel layer between the source/drain electrodes. This sensitive change in the electrical characteristics is mainly due to different work function of metal capping layer on the channel layer. The work function of each capping layer material has been analyzed and derived by using Kelvin probe force microscopy and compared with the energy bandgap of the SZTO layer. When the work function of the capping layer is larger than that of the channel layer, electrons are depleted from the channel layer to the capping layer. On the contrary, in the case of using a material having a work function smaller than that of the channel layer, the electrical characteristics were improved because electrons were injected into the channel layer. Based on depletion and injection mechanism caused by different contact barrier between metal capping layer and channel layer, NOT, NAND, and NOR logic circuits have been implemented simply by changing metal capping layer on the channel layer.
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Affiliation(s)
- Byeong Hyeon Lee
- Department of Microdevice Engineering, Korea University, Seoul, 136-701, Korea.,Research Institute of Advanced Semiconductor Convergence Technology, Cheongju, 28503, Korea
| | - Ahrum Sohn
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, Korea
| | - Sangsig Kim
- Department of Microdevice Engineering, Korea University, Seoul, 136-701, Korea
| | - Sang Yeol Lee
- Department of Semiconductor Engineering, CheongjuUniversity, Cheongju, 28503, Korea. .,Research Institute of Advanced Semiconductor Convergence Technology, Cheongju, 28503, Korea.
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Yoon SG, Yang Y, Jin H, Lee WH, Sohn A, Kim SW, Park J, Kim YS. A Surface-Functionalized Ionovoltaic Device for Probing Ion-Specific Adsorption at the Solid-Liquid Interface. Adv Mater 2019; 31:e1806268. [PMID: 30484923 DOI: 10.1002/adma.201806268] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/31/2018] [Indexed: 06/09/2023]
Abstract
Aqueous ion-solid interfacial interactions at an electric double layer (EDL) are studied in various research fields. However, details of the interactions at the EDL are still not fully understood due to complexity induced from the specific conditions of the solid and liquid parts. Several technical tools for ion-solid interfacial probing are experimentally and practically proposed, but they still show limitations in applicability due to the complicated measurements. Recently, an energy conversion device based on ion dynamics (called ionovoltaic device) was also introduced as another monitoring tool for the EDL, showing applicability as a novel probing method for interfacial interactions. Herein, a monitoring technique for specific ion adsorption (Cu2+ and Pb2+ in the range of 5 × 10-6 -1000 × 10-6 m) in the solid-liquid interface based on the ionovoltaic device is newly demonstrated. The specific ion adsorption and the corresponding interfacial potentials profiles are also investigated to elucidate a working mechanism of the device. The results give the insight of molecular-level ion adsorption through macroscopic water-motion-induced electricity generation. The simple and cost-effective detection of the device provides an innovative route for monitoring specific adsorption and expandability as a monitoring tool for various solid-liquid interfacial phenomena that are unrevealed.
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Affiliation(s)
- Sun Geun Yoon
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - YoungJun Yang
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Huding Jin
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Won Hyung Lee
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ahrum Sohn
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon-si, Gyeonggi-do, 16419, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon-si, Gyeonggi-do, 16419, Republic of Korea
| | - Junwoo Park
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Youn Sang Kim
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
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dela Peña IJI, dela Peña I, de la Peña JB, Kim HJ, Sohn A, Shin CY, Han DH, Kim BN, Ryu JH, Cheong JH. Transcriptional profiling of SHR/NCrl prefrontal cortex shows hyperactivity-associated genes responsive to amphetamine challenge. Genes, Brain and Behavior 2017; 16:664-674. [DOI: 10.1111/gbb.12388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 04/05/2017] [Accepted: 04/16/2017] [Indexed: 12/15/2022]
Affiliation(s)
- I. J. I. dela Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy; Sahmyook University; Seoul Republic of Korea
| | - I. dela Peña
- Department of Pharmaceutical and Administrative Sciences; Loma Linda University; Loma Linda CA USA
| | - J. B. de la Peña
- Uimyung Research Institute for Neuroscience, Department of Pharmacy; Sahmyook University; Seoul Republic of Korea
| | - H. J. Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy; Sahmyook University; Seoul Republic of Korea
| | - A. Sohn
- Uimyung Research Institute for Neuroscience, Department of Pharmacy; Sahmyook University; Seoul Republic of Korea
| | - C. Y. Shin
- Department of Neuroscience, School of Medicine; Konkuk University; Seoul Republic of Korea
| | - D. H. Han
- Department of Psychiatry; Chung-Ang University Medical School; Seoul Republic of Korea
| | - B.-N. Kim
- Department of Research Planning, Mental Health Research Institute; National Center for Mental Health; Seoul Republic of Korea
| | - J. H. Ryu
- Department of Life and Nanopharmaceutical Science; College of Pharmacy, Kyung Hee University; Seoul Republic of Korea
- Department of Oriental Pharmaceutical Science; College of Pharmacy, Kyung Hee University; Seoul Republic of Korea
| | - J. H. Cheong
- Uimyung Research Institute for Neuroscience, Department of Pharmacy; Sahmyook University; Seoul Republic of Korea
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Mehta N, Ho J, Boonsuk P, Sohn A. Investigating the Role of Stigma on Fertility Desire among HIV-positive
Women in Bangkok, Thailand: A Qualitative Study. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Cho Y, Sohn A, Kim S, Hahm MG, Kim DH, Cho B, Kim DW. Influence of Gas Adsorption and Gold Nanoparticles on the Electrical Properties of CVD-Grown MoS2 Thin Films. ACS Appl Mater Interfaces 2016; 8:21612-21617. [PMID: 27490096 DOI: 10.1021/acsami.6b08104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molybdenum disulfide (MoS2) has increasingly attracted attention from researchers and is now one of the most intensively explored atomic-layered two-dimensional semiconductors. Control of the carrier concentration and doping type of MoS2 is crucial for its application in electronic and optoelectronic devices. Because the MoS2 layers are atomically thin, their transport characteristics may be very sensitive to ambient gas adsorption and the resulting charge transfer. We investigated the influence of the ambient gas (N2, H2/N2, and O2) choice on the resistance (R) and surface work function (WF) of trilayer MoS2 thin films grown via chemical vapor deposition. We also studied the electrical properties of gold (Au)-nanoparticle (NP)-coated MoS2 thin films; their R value was found to be 2 orders of magnitude smaller than that for bare samples. While the WF largely varied for each gas, R was almost invariant for both the bare and Au-NP-coated samples regardless of which gas was used. Temperature-dependent transport suggests that variable range hopping is the dominant mechanism for electrical conduction for bare and Au-NP-coated MoS2 thin films. The charges transferred from the gas adsorbates might be insufficient to induce measurable R change and/or be trapped in the defect states. The smaller WF and larger localization length of the Au-NP-coated sample, compared with the bare sample, suggest that more carriers and less defects enhanced conduction in MoS2.
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Affiliation(s)
- Yunae Cho
- Department of Physics, Ewha Womans University , Seoul 03760, Korea
| | - Ahrum Sohn
- Department of Physics, Ewha Womans University , Seoul 03760, Korea
| | - Sujung Kim
- Department of Physics, Ewha Womans University , Seoul 03760, Korea
| | - Myung Gwan Hahm
- Department of Advanced Functional Thin Films, Korea Institute of Materials Science (KIMS) , Changwon 51508, Korea
- Department of Materials Science & Engineering, Inha University , Incheon 22212, Korea
| | - Dong-Ho Kim
- Department of Advanced Functional Thin Films, Korea Institute of Materials Science (KIMS) , Changwon 51508, Korea
| | - Byungjin Cho
- Department of Advanced Functional Thin Films, Korea Institute of Materials Science (KIMS) , Changwon 51508, Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University , Seoul 03760, Korea
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Kim E, Cho Y, Sohn A, Hwang H, Lee YU, Kim K, Park HH, Kim J, Wu JW, Kim DW. Mie Resonance-Modulated Spatial Distributions of Photogenerated Carriers in Poly(3-hexylthiophene-2,5-diyl)/Silicon Nanopillars. Sci Rep 2016; 6:29472. [PMID: 27388122 PMCID: PMC4937449 DOI: 10.1038/srep29472] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/20/2016] [Indexed: 01/19/2023] Open
Abstract
Organic/silicon hybrid solar cells have great potential as low-cost, high-efficiency photovoltaic devices. The superior light trapping capability, mediated by the optical resonances, of the organic/silicon hybrid nanostructure-based cells enhances their optical performance. In this work, we fabricated Si nanopillar (NP) arrays coated with organic semiconductor, poly(3-hexylthiophene-2,5-diyl), layers. Experimental and calculated optical properties of the samples showed that Mie-resonance strongly concentrated incoming light in the NPs. Spatial mapping of surface photovoltage, i.e., changes in the surface potential under illumination, using Kelvin probe force microscopy enabled us to visualize the local behavior of the photogenerated carriers in our samples. Under red light, surface photovoltage was much larger (63 meV) on the top surface of a NP than on a planar sample (13 meV), which demonstrated that the confined light in the NPs produced numerous carriers within the NPs. Since the silicon NPs provide pathways for efficient carrier transportation, high collection probability of the photogenerated carriers near the NPs can be expected. This suggests that the optical resonance in organic/silicon hybrid nanostructures benefits not only broad-band light trapping but also efficient carrier collection.
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Affiliation(s)
- Eunah Kim
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Yunae Cho
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Ahrum Sohn
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Heewon Hwang
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Y U Lee
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Kyungkon Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea
| | - Hyeong-Ho Park
- Applied Device and Material Lab., Device Technology Division, Korea Advanced Nanofab Center (KANC), Suwon 443-270, Korea
| | - Joondong Kim
- Department of Electrical Engineering, Incheon National University, Incheon 406-772, Korea
| | - J W Wu
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, Seoul 120-750, Korea
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Abstract
We examined gender differences in sexual behaviours, condom-related behaviours and attitudes to premarital sex in order to identify gender differences in young Korean singles aged 19 to 30 years. This study was based on data from the 2003 national survey of attitudes and behaviours towards AIDS in the Korean adult population, which contains information on a national sample of the general population aged 19 to 59 years. We selected 501 unmarried subjects between the ages of 19-30 from 1,995 respondents. The selection criterion for the subjects' age was based on the 2003 Korean mean age for marriage which was 29.8 for men and 27.0 for women. Gender differentials in sexual behaviour, condom use and related attitudes toward condom use were assessed. Although men initiated sexual practice earlier and had more multiple partners than women, both genders were equally likely to have engaged in inconsistent condom use, even when having sex with a high risk partner. These findings suggest that sex education focusing on condom use should be included in the school curricula. Implementation of early sexual education should start before the students initiate sexual activity to give them a chance to prepare gradu ally. Asia Pac J Public Health 2007; 19(2): 45-52.
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Affiliation(s)
- A. Sohn
- Graduate School of Health Sciences and Social Welfare,
Sahmyook University, Seoul, South Korea,
| | - S.S. Chun
- Graduate School of Health Sciences and Social Welfare,
Sahmyook University, Seoul, South Korea
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Kim HT, Kim M, Sohn A, Slusar T, Seo G, Cheong H, Kim DW. Photoheat-induced Schottky nanojunction and indirect Mott transition in VO₂: photocurrent analysis. J Phys Condens Matter 2016; 28:085602. [PMID: 26829104 DOI: 10.1088/0953-8984/28/8/085602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In order to elucidate a mechanism of the insulator-to-metal transition (IMT) for a Mott insulator VO2 (3d(1)), we present Schottky nanojunctions and the structural phase transition (SPT) by simultaneous nanolevel measurements of photocurrent and Raman scattering in microlevel devices. The Schottky nanojunction with the monoclinic metallic phase between the monoclinic insulating phases is formed by the photoheat-induced IMT not accompanied with the SPT. The temperature dependence of the Schottky junction reveals that the Mott insulator has an electronic structure of an indirect subband between the main Hubbard d bands. The IMT as reverse process of the Mott transition occurs by temperature-induced excitation of bound charges in the indirect semiconductor band, most likely formed by impurities such as oxygen deficiency. The metal band (3d(1)) for the Mott insulator is screened (trapped) by the indirect band (impurities).
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Affiliation(s)
- Hyun-Tak Kim
- Metal-Insulator-Transition Center, Electronics & Telecommunications Research Institute, Daejeon 305-700, Korea. School of Advanced Device Technology, Korea University of Science and Technology, Daejeon 305-333, Korea
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15
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Park HH, Zhang X, Lee KW, Sohn A, Kim DW, Kim J, Song JW, Choi YS, Lee HK, Jung SH, Lee IG, Cho YD, Shin HB, Sung HK, Park KH, Kang HK, Park WK, Park HH. Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission. Nanoscale 2015; 7:20717-20724. [PMID: 26601993 DOI: 10.1039/c5nr05877e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel technique for the selective photochemical synthesis of silver (Ag) nanoparticles (NPs) on ZnO nanorod arrays is established by combining ultraviolet-assisted nanoimprint lithography (UV-NIL) for the definition of growth sites, hydrothermal reaction for the position-controlled growth of ZnO nanorods, and photochemical reduction for the decoration of Ag NPs on the ZnO nanorods. During photochemical reduction, the size distribution and loading of Ag NPs on ZnO nanorods can be tuned by varying the UV-irradiation time. The photochemical reduction is hypothesized to facilitate the adsorbed citrate ions on the surface of ZnO, allowing Ag ions to preferentially form Ag NPs on ZnO nanorods. The ratio of visible emission to ultraviolet (UV) emission for the Ag NP-decorated ZnO nanorod arrays, synthesized for 30 min, is 20.5 times that for the ZnO nanorod arrays without Ag NPs. The enhancement of the visible emission is believed to associate with the surface plasmon (SP) effect of Ag NPs. The Ag NP-decorated ZnO nanorod arrays show significant SP-induced enhancement of yellow-green light emission, which could be useful in optoelectronic applications. The technique developed here requires low processing temperatures (120 °C and lower) and no high-vacuum deposition tools, suitable for applications such as flexible electronics.
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Affiliation(s)
- Hyeong-Ho Park
- Technology Development Division, Korea Advanced Nanofab Center (KANC), Suwon 443270, Korea.
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16
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Magg J, Portal E, Clemens L, Weber J, Fehrenbacher B, Schaller M, Sohn A, Mains R, Riess O, Nguyen H. B21 Characterisation Of Mice Overexpressing Mutant Huntingtin Lacking The Spine Morphogenesis Regulator Kalirin-7. J Neurol Psychiatry 2014. [DOI: 10.1136/jnnp-2014-309032.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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17
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Kim S, Gupta MK, Lee KY, Sohn A, Kim TY, Shin KS, Kim D, Kim SK, Lee KH, Shin HJ, Kim DW, Kim SW. Transparent flexible graphene triboelectric nanogenerators. Adv Mater 2014; 26:3918-25. [PMID: 24677389 DOI: 10.1002/adma.201400172] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 02/27/2014] [Indexed: 05/12/2023]
Affiliation(s)
- Seongsu Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
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Jo H, Sohn A, Shin KS, Kumar B, Kim JH, Kim DW, Kim SW. Novel architecture of plasmon excitation based on self-assembled nanoparticle arrays for photovoltaics. ACS Appl Mater Interfaces 2014; 6:1030-1035. [PMID: 24328244 DOI: 10.1021/am4045585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
An efficient approach to producing hexagonally self-assembled and well-dispersed gold (Au) nanoparticles (NPs) in the pores of porous anodic aluminum oxide (AAO) is reported. This approach is particularly useful for tuning the surface plasmon resonance frequency of Au NPs by varying the effective dielectric constant of AAO. A strongly enhanced Raman spectrum of dye molecule rhodamine 6G using these well-dispersed Au NPs revealed that such a self-assembled Au NP array can induce a strong plasmonic field. Furthermore, we demonstrated a new architecture of plasmon excitation in a bulk heterojunction (BHJ) inverted organic solar cell (IOSC) using the Au NP array with AAO. The optical response of an active layer poly(3-hexylthiophene):(6,6)-phenyl-C61-butyric acid methyl ester was enhanced by this strong plasmonic field associated a well-dispersed Au NP array. A comparative study of AAO with and without Au NPs confirmed plasmonic improvement of the BHJ IOSC. Simulation results showed that Au NPs concentrate the incoming light into a strongly localized field and enhance light absorption in a wide wavelength range.
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Affiliation(s)
- Hanggochnuri Jo
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU) , Suwon 440-746, Republic of Korea
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Sohn A, Henderson P, Lewis G, Shaikh N, Olbricht W, Spector J. An Innovative Non-Invasive Modality for the Ablation of Varicose Veins and Other Vascular Malformations. J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Jimenez N, Henderson P, Ruffino J, Weinstein A, Sohn A, Krijgh D, Spector J. The Novel Cytoprotectant Hydrogen Sulfide Mitigates Ischemia-Reperfusion Injury via A Xanthine Oxidase-Mediated Pathway. J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Balkey MM, Day RD, Batha SH, Elliot NE, Pierce T, Sandoval DL, Garrard KP, Sohn A. Production and Metrology of Cylindrical Inertial Confinement Fusion Targets with Sinusoidal Perturbations. Fusion Science and Technology 2004. [DOI: 10.13182/fst04-a435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. M. Balkey
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | - R. D. Day
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | - S. H. Batha
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | - N. E. Elliot
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | - T. Pierce
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | - D. L. Sandoval
- Los Alamos National Laboratory, PO Box 1663, MS E526, Los Alamos NM, 87545;
| | | | - A. Sohn
- North Carolina State University, Raleigh NC, 27695
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22
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Sohn A, Kaidoh T, Inoué T. Three-dimensional structure of the synaptic contact of the neuromuscular junction in the rat lumbrical muscle. Arch Histol Cytol 1999; 62:237-47. [PMID: 10495878 DOI: 10.1679/aohc.62.237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study examined the three-dimensional structures of the synaptic contact in rat lumbrical muscles by scanning electron microscopy using three different methods: the aldehyde prefix-osmium-dimethyl sulfoxide-osmium method (A-O-D-O method), the cell-extraction method, and the NaOH-digestion method. These three methods visualized the motor nerve endings, subneural basal lamina and postsynaptic sarcolemma, respectively. The motor nerve endings were composed of a cluster of spherical and cylindrical terminals. Pores on the presynaptic membrane were considered openings of exocytotic vesicles. The postsynaptic side of the subneural basal lamina showed numerous ridges, corresponding to junctional folds. Most of the ridges rose vertically from their base. The ridges showed widening, narrowing, and branching. The subneural basal lamina appeared to be composed of small granular substances. The basal lamina of the primary synaptic clefts had pores 25-30 nm in diameter, which may facilitate the transport of acetylcholine (ACh) without being hydrolyzed by ACh esterase in the lamina. On the outer surface of the postsynaptic sarcolemma in a sole plate, the primary synaptic clefts were composed of a mixture of depressions and gutters; so far as we know, this represents the only example of such a phenomenon. These depressions and gutters seem to fit respectively into the spherical and cylindrical terminals of the motor nerve endings. The openings of the junctional folds consisted of a mixture of many slits and a few pits in the primary synaptic clefts.
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Affiliation(s)
- A Sohn
- Department of Anatomy, Faculty of Medicine, Tottori University, Japan
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23
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Sohn A, Kaidoh T, Inoué T. Scanning electron microscopic observation on the equatorial region of the rat intrafusal muscle fibres, especially on the subsarcolemmal sarcoplasmic reticulum. J Electron Microsc (Tokyo) 1999; 48:659-663. [PMID: 10605098 DOI: 10.1093/oxfordjournals.jmicro.a023732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We examined intracellular structures in the equatorial region of the muscle spindles of rat soleus muscles by scanning electron microscopy, paying particular attention to the ultrastructure of the sarcoplasmic reticulum (SR) beneath the sarcolemma. The subsarcolemmal SR was more developed in nuclear chain fibres than in nuclear bag fibres as was reported in the sleeve and extracapsular regions. In addition, the subsarcolemmal SR of the chain fibre formed a fenestrated sheet, whereas that of the bag fibre organized a layer of fenestrated bands beneath the sarcolemma where the sensory nerve endings are associated. No T-tubules were discerned in the subsarcolemmal SR of both fibres, which may be concerned with the little contraction of the equatorial region.
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Hehn G, Sohn A, Pfister G, Drewnick F. Improved evaluation of on-line networks for measuring local gamma dose rates / Verbesserte Auswertung von On-Line-Meßnetzen für die Ortsdosisleistung. KERNTECHNIK 1996. [DOI: 10.1515/kern-1996-610117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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25
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Schenk P, Sohn A, Adams MJ, Antoniw JF, Hamacher J, Steinbiß HH. Movement of bymoviruses and functions of RNA2-encoded proteins of barley yellow mosaic virus. ACTA ACUST UNITED AC 1995. [DOI: 10.1051/agro:19950701] [Citation(s) in RCA: 5] [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: 11/14/2022]
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26
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Sohn A, Schenk P, Hamacher J, Signoret PA, Steinbiß HH. Comparison of wheat spindle streak mosaic virus (WSSMV) and barley yellow mosaic virus (BaYMV): 2 closely related bymoviruses. ACTA ACUST UNITED AC 1995. [DOI: 10.1051/agro:19950707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Sohn A, Schenk P, Signoret PA, Schmitz G, Schell J, Steinbiss HH. Sequence analysis of the 3'-terminal half of RNA 1 of wheat spindle streak mosaic virus. Arch Virol 1994; 135:279-92. [PMID: 7979968 DOI: 10.1007/bf01310014] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
cDNA complementary to the 3'-terminal half of RNA 1 of wheat spindle streak mosaic virus (WSSMV) from Southern France has been cloned and sequenced. One large open reading frame (ORF) of 4410 nucleotides and a nontranslated region (NTR) of 213 nucleotides at the 3'-end excluding the poly(A)-tail were found. Because of the amino acid sequence homology to the polyprotein of barley yellow mosaic virus (BaYMV) RNA 1, the encoded polyprotein of the sequenced region of WSSMV is supposed to comprise the C-terminal part of the putative cytoplasmic inclusion (CI) protein, the nuclear inclusion a (NIa) proteinase, the (NIb) RNA-polymerase and the capsid protein. The first 19 N-terminal amino acids of the capsid protein were determined by direct sequencing of proteins of purified WSSMV particles and confirmed this hypothesis. The deduced capsid protein has 294 amino acids and shows 74% identity with the BaYMV capsid protein sequence. This high sequence homology with BaYMV, in addition to the significant identities with barley mild mosaic virus (BaMMV, 35%) and its marginal homology to capsid protein sequences of aphid and mite-borne potyviruses (22-24%), supports the classification of WSSMV as a distinct member of the genus Baymovirus, family Potyviridae.
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Affiliation(s)
- A Sohn
- Max-Planck-Institut für Züchtungsforschung, Abteilung Grundlagen der Pflanzenzüchtung, Köln, Federal Republic of Germany
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Schlichter U, Sohn A, Peerenboom E, Schell J, Steinbiβ HH. Molecular analysis of the capsid protein gene of a german isolate of barley mild mosaic virus. Plant Cell Rep 1993; 12:298. [PMID: 24197162 DOI: 10.1007/bf00237140] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/1992] [Revised: 12/04/1992] [Indexed: 06/02/2023]
Affiliation(s)
- U Schlichter
- Max-Planck-Institut für Züchtungsforschung, Abteilung Grundlagen der Pflanzenzüchtung, Carl-von-Linné Weg 10, W-5000, Köln 30, FRG
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Schlichter U, Sohn A, Peerenboom E, Schell J, Steinbiß HH. Molecular analysis of the capsid protein gene of a german isolate of barley mild mosaic virus. Plant Cell Rep 1993; 12:237-240. [PMID: 24197028 DOI: 10.1007/bf00237062] [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] [Subscribe] [Scholar Register] [Received: 08/24/1992] [Revised: 12/04/1992] [Indexed: 06/02/2023]
Abstract
Barley mild mosaic virus (BaMMV) is one of the agents causing the barley yellow mosaic disease. The sequence corresponding to the 3'end of the BaMMV RNA1 of a German isolate was sequenced and the coding sequence for the 251 amino acid containing capsid protein was determined. Comparison of this sequence to other potyviral sequences and to the corresponding sequence of two Japanese isolates of BaMMV was done. The three different isolates of BaMMV show a high degree of similarity.
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Affiliation(s)
- U Schlichter
- Max-Planck-Institut für Züchtungsforschung, Abteilung Grundlagen der Pflanzenzüchtung, Carl-von-Linné Weg 10, 30, Köln, FRG
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Sohn A, Mattes M. Preequilibrium emission in differential cross-section calculations / Preequilibrium Emission bei der Berechnung differentieller Wirkungsquerschnitte. KERNTECHNIK 1992. [DOI: 10.1515/kern-1992-570413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Park J, Sohn A. Individual effects on married women's labor force participation in Korea. Bogeon sahoe nonjib 1990; 10:136-51. [PMID: 12179741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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