Relevant bibliographies by topics / WS2 graphene

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'WS2 graphene'

Author: Grafiati
Published: 22 February 2023
Last updated: 23 February 2023

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Journal articles on the topic "WS2 graphene"

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Aeschlimann, Sven, Antonio Rossi, Mariana Chávez-Cervantes, et al. "Direct evidence for efficient ultrafast charge separation in epitaxial WS2/graphene heterostructures." Science Advances 6, no. 20 (2020): eaay0761. http://dx.doi.org/10.1126/sciadv.aay0761.

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We use time- and angle-resolved photoemission spectroscopy (tr-ARPES) to investigate ultrafast charge transfer in an epitaxial heterostructure made of monolayer WS2 and graphene. This heterostructure combines the benefits of a direct-gap semiconductor with strong spin-orbit coupling and strong light-matter interaction with those of a semimetal hosting massless carriers with extremely high mobility and long spin lifetimes. We find that, after photoexcitation at resonance to the A-exciton in WS2, the photoexcited holes rapidly transfer into the graphene layer while the photoexcited electrons rem
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Nasr, Mahmoud, Lamyae Benhamou, Ahmed Kotbi, et al. "Photoelectrochemical Enhancement of Graphene@WS2 Nanosheets for Water Splitting Reaction." Nanomaterials 12, no. 11 (2022): 1914. http://dx.doi.org/10.3390/nano12111914.

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Tungsten disulfide nanosheets were successfully prepared by one-step chemical vapor deposition using tungsten oxide and thiourea in an inert gas environment. The size of the obtained nanosheets was subsequently reduced down to below 20 nm in width and 150 nm in length using high-energy ball milling, followed by 0.5 and 1 wt% graphene loading. The corresponding vibrational and structural characterizations are consistent with the fabrication of a pure WS2 structure for neat sampling and the presence of the graphene characteristic vibration modes in graphene@WS2 compounds. Additional morphologica
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Grundmann, Annika, Clifford McAleese, Ben Richard Conran, et al. "MOVPE of Large-Scale MoS2/WS2, WS2/MoS2, WS2/Graphene and MoS2/Graphene 2D-2D Heterostructures for Optoelectronic Applications." MRS Advances 5, no. 31-32 (2020): 1625–33. http://dx.doi.org/10.1557/adv.2020.104.

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ABSTRACTMost publications on (opto)electronic devices based on 2D materials rely on single monolayers embedded in classical 3D semiconductors, dielectrics and metals. However, heterostructures of different 2D materials can be employed to tailor the performance of the 2D components by reduced defect densities, carrier or exciton transfer processes and improved stability. This translates to additional and unique degrees of freedom for novel device design. The nearly infinite number of potential combinations of 2D layers allows for many fascinating applications. Unlike mechanical stacking, metal-
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Zhao, Fei, Zhongxue Li, Yongzhong Fu, and Quan Wang. "Gas-Sensitive Characteristics of Graphene Composite Tungsten Disulfide to Ammonia." Sensors 22, no. 22 (2022): 8672. http://dx.doi.org/10.3390/s22228672.

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Two-dimensional materials have outstanding application prospects in gas sensing. By constructing composite structures of various gas-sensitive materials, more-efficient and sensitive gas sensors can be further developed. After graphene is compounded with WS2, the composite material can improve the gas detection performance. In this work, the adsorption energy and the electronic properties of a graphene/WS2 structure were calculated by first-principles before and after adsorption of NH3. The calculation results indicate that the bandgap of the material was appreciably reduced after NH3 was adso
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Guo, Liulong, Hongxia Yan, Zhengyan Chen, et al. "Amino Functionalization of Reduced Graphene Oxide/Tungsten Disulfide Hybrids and Their Bismaleimide Composites with Enhanced Mechanical Properties." Polymers 10, no. 11 (2018): 1199. http://dx.doi.org/10.3390/polym10111199.

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A novel graphene-based nanocomposite particles (NH2-rGO/WS2), composed of reduced graphene oxide (rGO) and tungsten disulfide (WS2) grafted with active amino groups (NH2-rGO/WS2), was successfully synthesized by an effective and facile method. NH2-rGO/WS2 nanoparticles were then used to fabricate new bismaleimide (BMI) composites (NH2-rGO/WS2/BMI) via a casting method. The results demonstrated that a suitable amount of NH2-rGO/WS2 nanoparticles significantly improved the mechanical properties of the BMI resin. When the loading of NH2-rGO/WS2 was only 0.6 wt %, the impact and flexural strength
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G. Alagu Vibisha, Malek G. Daher, S. M. Habibur Rahman, Z. Jaroszewicz, K.B. Rajesh, and Rajan Jha. "Sensitivity Enhancement of Surface Plasmon Resonance-based Biosensor using Aluminium-Cobalt-Tungsten Disulfide-Graphene Heterostructure." Journal of Environmental Nanotechnology 11, no. 4 (2022): 05–13. http://dx.doi.org/10.13074/jent.2022.12.224462.

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An attempt has been made to enhance the sensitivity of a high-sensitive surface plasmon resonance (SPR) biosensor with an aluminium-cobalt bimetallic layer covered by a tungsten disulfide-graphene heterostructure. A thin layer of cobalt coated on an aluminium layer contributed substantially to increase the sensor performance. The use of Al and Co metals instead of noble metals like Ag and Au reduced the cost of the sensor. Further, tungsten disulfide (WS2) layers were employed to improve sensitivity and protect the bimetal Al-Co from becoming oxidized, whereas graphene served as the biomolecul
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Han, Lei, Zhimin Hu, Jianxing Pan, Tianye Huang, and Dapeng Luo. "High-Sensitivity Goos-Hänchen Shifts Sensor Based on BlueP-TMDCs-Graphene Heterostructure." Sensors 20, no. 12 (2020): 3605. http://dx.doi.org/10.3390/s20123605.

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Surface plasmon resonance (SPR) with two-dimensional (2D) materials is proposed to enhance the sensitivity of sensors. A novel Goos–Hänchen (GH) shift sensing scheme based on blue phosphorene (BlueP)/transition metal dichalogenides (TMDCs) and graphene structure is proposed. The significantly enhanced GH shift is obtained by optimizing the layers of BlueP/TMDCs and graphene. The maximum GH shift of the hybrid structure of Ag-Indium tin oxide (ITO)-BlueP/WS2–graphene is −2361λ with BlueP/WS2 four layers and a graphene monolayer. Furthermore, the GH shift can be positive or negative depending on
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Wang, Di, Jin Liu, Haima Yang, Bo Huang, and Guohui Zeng. "Research on Tunable SPR Sensors Based on WS2 and Graphene Hybrid Nanosheets." Photonics 9, no. 7 (2022): 490. http://dx.doi.org/10.3390/photonics9070490.

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A prismatic excitation-based affinity biosensor consisting of the prism (BK7), WS2/graphene hybrid nanosheets, and silver (Ag) as the active metal for the surface plasmon resonance is proposed in this present research. The introduction of the transition metal WS2/graphene layer protected the silver substrate and enhanced the adsorption of biomolecules, which facilitated the quality and performance of detection. Here, we improved the detection structure by focusing on the metallic materials, graphene and WS2 film layers, and the thickness of the measured medium on the sensing effect. The result
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Huang, Yi, Yu Jiang, Zhaofei Ma, et al. "Seaweed-Liked WS2/rGO Enabling Ultralong Cycling Life and Enhanced Rate Capability for Lithium-Ion Batteries." Nanomaterials 9, no. 3 (2019): 469. http://dx.doi.org/10.3390/nano9030469.

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WS2 is considered as a potential anode material for lithium ion batteries (LIBs) with superior theoretical capacity and stable structure with two-dimensional which facilitates to the transportation and storage of lithium ion. Nevertheless, the commercial recognition of WS2 has been impeded by the intrinsic properties of WS2, including poor electrical conductivity and large volume expansion. Herein, a seaweed-liked WS2/reduced graphene oxide (rGO) composites has been fabricated through a procedure involving the self-assembling of WO42−, hexadecyl trimethyl ammonium ion with graphene oxide (GO)
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Noori, Y. J., S. Thomas, S. Ramadan, et al. "Electrodeposited WS2 monolayers on patterned graphene." 2D Materials 9, no. 1 (2021): 015025. http://dx.doi.org/10.1088/2053-1583/ac3dd6.

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Abstract The development of scalable techniques to make two-dimensional (2D) material heterostructures is a major obstacle that needs to be overcome before these materials can be implemented in device technologies. Electrodeposition is an industrially compatible deposition technique that offers unique advantages in scaling 2D heterostructures. In this work, we demonstrate the electrodeposition of atomic layers of WS2 over graphene electrodes using a single source precursor. Using conventional microfabrication techniques, graphene was patterned to create micro-electrodes where WS2 was site-sele
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Dissertations / Theses on the topic "WS2 graphene"

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Maxson, Ashley R. "NOVEL SYNTHESIS AND CHARACTERIZATION OF INORGANIC FULLERENE TYPE WS2 AND GRAPHENE HYBRIDS." Monterey, California. Naval Postgraduate School, 2013. http://hdl.handle.net/10945/32866.

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Approved for public release; distribution is unlimited<br>With the aim to develop personal protection systems with improved mechanical properties and reduced weight, this research combined graphene with tungsten disulfide, and studied this hybrid system included in epoxy resin. A novel plasma production process generated nanometric size tungsten oxide (WO3) spherical particles. The nanospheres were sulfurized to produce inorganic-fullerene type tungsten disulfide (IF-WS2). The plasma IF-WS2 particles exhibited smaller particle size, characteristic hollow cores and larger angle facets than IF-W
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Hudson, David Christopher. "Two dimensional atomically thin materials and hybrid superconducting devices." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/16034.

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In this thesis a variety of topics concerning 2D materials that have been separated from bulk layered crystals are discussed. Throughout the thesis, single and few layers of graphene, fluorinated graphene, MoS2 and WS2 are used. Two new methods of freely suspending 2D materials are presented as well as a method of removing the background from optical images. This aids contrast measurements for the determination of the number of layers. Fluorinated graphene is found to be sensitive to beta radiation; the resistance of fluorinated graphene transistors is shown to decrease upon exposure to the ra
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Rengifo, Sara. "A Comparison Between Graphene and WS2 as Solid Lubricant Additives to Aluminum for Automobile Applications." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/1862.

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The purpose of this thesis was to compare graphene nanoplatelets (GNP) and WS2 as solid lubricant additives to aluminum in order to reduce friction and wear. The central hypothesis of this work relied on lubricating properties of 2D materials, which consist layers that slip under a shear force. Two aluminum composites were made (Al-2 vol.% GNP and Al-2 vol.% WS2) by spark plasma sintering. Tribological properties were evaluated by ball-on-disk wear tests at room temperature (RT) and 200°C. WS2 not only presented the lowest COF (0.66) but also improved the wear resistance of aluminum by 54% at
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Rossi, Antonio. "2D Vertical Heterostructures: growth, properties and applications." Doctoral thesis, Scuola Normale Superiore, 2018. http://hdl.handle.net/11384/85906.

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Pu, Fei S. B. Massachusetts Institute of Technology. "High yield production of inorganic graphene-like materials (MoS₂, WS₂, BN) through liquid exfoliation testing key parameters." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76147.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2012.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 41).<br>Inorganic graphene-like materials such as molybdenum disulfide (MoS₂), tungsten sulfide (WS₂), and boron nitride (BN) are known to have electronic properties. When exfoliated into layers and casted onto carbon nanofilms, they can become
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Wang, Bo. "An atomistic approach to graphene and carbon clusters grown on a transition metal surface." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2069.

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In this thesis, graphene (i.e. monolayer carbon film) and carbon clusters supported on a transition metal surface are systematically studied by local probe techniques, with respect to their structures, electronic properties and formation mechanisms. The main tools used are low-temperature scanning tunnelling microscopy and spectroscopy (STM and STS), which are introduced in Chapter 2. The mechanism of the resonance tunnelling at electron energies higher than the work function of the surface is discussed in detail, and a qualitative explanation of the Gundlach oscillations in the corresponding
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Hegrová, Veronika. "Aplikace korelativní AFM/SEM mikroskopie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402580.

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This thesis is dealing with application of Correlative Probe and Electron Microscopy. All measurements were carried out by atomic force microscope LiteScope which is designed especially to be combined with electron microscopes. Advantages of Correlative AFM/SEM Microscopy are demonstrated on selected samples from field of nanotechnology and material science. Application of the correlative imaging was proposed and then realized particularly in case of low-dimensional structures and thin films. Further, this thesis deals with the possibility of combining Correlative AFM/SEM Microscopy with other
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Chen, Hsiang-Chieh, and 陳湘婕. "In adatom with graphene and WS2 hetrosturcture photodetectors." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/pbk5fk.

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Ku, Yi Hang, and 辜翊航. "Band alignment studies of graphene/ZnO and MoS2/WS2 heterostuctures." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/57973252544563615533.

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碩士<br>國立清華大學<br>先進光源科技學位學程<br>104<br>In this study, we focus on 2D material interface and measured the band structure by Scanning Photo-Electron Microscopy (SPEM) at National Synchrotron Radiation Research Center (NSRRC). The experiment with two topics: (1) Graphene/ZnO heterojunction, and (2) MoS2/WS2 heterostructures. From the topic (1), we found ZnO with flat band structure contact to the interface, and it was quite different from the results of Schottky contact in literature. In topic (2), we compared two MoS2/WS2 hetero- structures with different bonding at the interface (Van der Waals bo
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Tsai, Cheng Lun, and 蔡政倫. "The Study of Solar Cells Based on 2D Materials MoS2, WS2 and Graphene with Bulk Semiconductors." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/47wgrq.

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碩士<br>國立清華大學<br>材料科學工程學系<br>105<br>Graphene has shown superior properties suitable for photovoltaic devices, including high optical transmittance, high mechanical flexibility, low resistivity, and high carrier mobility. In theory, with the property of semi-metal, graphene is able to form Schottky junction with any semiconductor having moderate carrier density. Monolayer Transition Metal Dichalcogenides (TMDs) are also promising two-dimensional materials in optoelectronic devices. Monolayer TMDs are semiconductors with direct band gap which is beneficial to optoelectronic usage. Combination of m
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Book chapters on the topic "WS2 graphene"

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Banerjee, Jayeta, and Mina Ray. "Theoretical Insight of Plasmonic Resonance in WS2–Graphene Based Hetrostructure with Ag–Au Bimetal for Optical Sensing." In Springer Proceedings in Physics. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6467-3_18.

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Lin, Yu-Chuan. "Tuning Electronic Transport in WSe2-Graphene." In Springer Theses. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00332-6_6.

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Lin, Yu-Chuan. "Atomically Thin Heterostructures Based on Monolayer WSe2 and Graphene." In Springer Theses. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00332-6_5.

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Aleshkin, V. Ya, A. A. Dubinov, M. Ryzhii, V. Ryzhii, and T. Otsuji. "Electron Capture in van der Waals Graphene-Based Heterostructures with WS2 Barrier Layers *." In Graphene-Based Terahertz Electronics and Plasmonics. Jenny Stanford Publishing, 2020. http://dx.doi.org/10.1201/9780429328398-53.

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Conference papers on the topic "WS2 graphene"

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Ermolaev, G. A., D. I. Yakubovsky, Y. V. Stebunov, A. A. Voronov, A. V. Arsenin, and V. S. Volkov. "Spectroscopic ellipsometry of large area monolayer WS2 and WSe2 films." In PROCEEDINGS OF INTERNATIONAL CONGRESS ON GRAPHENE, 2D MATERIALS AND APPLICATIONS (2D MATERIALS 2019). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0054947.

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Mehew, Jake D., Selim Unal, Elias Torres Alonso, et al. "Ionic Polymer Gated WS2-Graphene Photodetectors." In 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2018. http://dx.doi.org/10.1109/nano.2018.8626260.

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Trovatello, Chiara, Giulia Piccinini, Stiven Forti, et al. "Hot Carrier Tunneling in Graphene/WS2 Heterostructures." In International Conference on Ultrafast Phenomena. OSA, 2020. http://dx.doi.org/10.1364/up.2020.m4a.26.

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Yu, Yang, Xiao Xing, Wenjie Zhang, Weimin Liu, and Guohong Ma. "Ultrafast charge transfer and interlayer exciton formation in WSe2/WS2 and WSe2/graphene heterostructures." In International Conference on Ultrafast Phenomena. OSA, 2020. http://dx.doi.org/10.1364/up.2020.tu3b.6.

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Tian, Yan, ZeKun Guo, Haibo Gan, et al. "Fabrication technique and transportation properties of WS2/graphene heterojunction." In 2017 International Conference on Electron Devices and Solid-State Circuits (EDSSC). IEEE, 2017. http://dx.doi.org/10.1109/edssc.2017.8126444.

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Polyakov, Alexander Yu, Lena Yadgarov, Vasily Lebedev, et al. "WS2 nanotubes dressed in gold and silver: Synthesis, optoelectronic properties, and NO2 sensing." In PROCEEDINGS OF INTERNATIONAL CONGRESS ON GRAPHENE, 2D MATERIALS AND APPLICATIONS (2D MATERIALS 2019). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0055823.

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Naseer, Sufyan, Adeel Riaz, Ramsha Khan, et al. "Ultrathin 2D Sheets of Graphene and WS2 for Energy Storage Applications." In 2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST - 2019). IEEE, 2019. http://dx.doi.org/10.1109/ibcast.2019.8667121.

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Forti, Stiven, Antonio Rossi, Camilla Coletti, et al. "Growth, characterization, and ultrafast carrier dynamics of WS2/graphene heterostructures (Conference Presentation)." In Ultrafast Bandgap Photonics III, edited by Michael K. Rafailov. SPIE, 2018. http://dx.doi.org/10.1117/12.2315004.

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Zhang, Ruiling, Lin Gan, Danyang Zhang, Zhen Wang, and Cun-Zheng Ning. "Disentangling Charge Transfer, Heat Conduction, and Strain Effects at WS2/Graphene Interface." In CLEO: Applications and Technology. OSA, 2021. http://dx.doi.org/10.1364/cleo_at.2021.jw1a.133.

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Du, Wenxiong, Heping Li, Cong Liu, et al. "Ultrafast pulse erbium-doped fiber laser with a graphene/WS2 heterostructure saturable absorber." In Laser Components, Systems, and Applications, edited by Lan Jiang, Shibin Jiang, Lijun Wang, and Long Zhang. SPIE, 2017. http://dx.doi.org/10.1117/12.2284368.

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