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1. Macroscopic properties of single-crystalline and polycrystalline graphene on soft substrate for transparent electrode applications

Author:
Roh, Ji Soo; Jang, Jun Kyu; Kwon, Nayoung; Bok, Shingyu; Kim, Yu Jin; Jeon, Cheolho; Yoon, Hee Wook; Kim, Hyo Won; Lim, Byungkwon; Park, Ho Bum
Source:
Carbon 2021 v.178 pp. 181-189
ISSN:
0008-6223
Subject:
vapors,   etc   ; electrodes; graphene;     Show all 3 Subjects
Abstract:
... Large-area graphene synthesized by a chemical vapor deposition (CVD) method is promising for a flexible, stretchable transparent electrode but suffers from structural defects such as grain boundaries, which causes to degrade its physical properties. Recently, preparation methods of large-scale growth templates for single-crystalline graphene (SCG) were reported, but the macroscopic properties of S ...
DOI:
10.1016/j.carbon.2021.02.097

2. Synthesis of uniform nanometer-thick graphite film on polycrystalline Ni substrate with ultrafine grains

Author:
Hu, Qicheng; Nam, Ki-Bong; Yeo, Jin-Ho; Kim, Mun-Ja; Yoo, Ji-Beom
Source:
Carbon 2021 v.177 pp. 35-43
ISSN:
0008-6223
Subject:
vapors,   etc   ; foil; graphene; temperature;     Show all 4 Subjects
Abstract:
... When a polycrystalline Ni foil is used as the substrate for the chemical vapor deposition synthesis of multilayer-graphene or nanometer-thick graphite films (NGFs), these films always exhibit uneven morphologies and qualities on Ni grains with different orientations. In this study, we fabricated a carbon-supersaturated Ni foil (ss-Ni foil) to function as a carbon source through an ultrafast coolin ...
DOI:
10.1016/j.carbon.2021.02.058

3. Nano-Laminated Metal Oxides/Polyamide Stretchable Moisture- and Gas-Barrier Films by Integrated Atomic/Molecular Layer Deposition

Author:
Tseng, Ming-Hung; Su, Dung-Yue; Chen, Guan-Lun; Tsai, Feng-Yu
Source:
ACS applied materials & interfaces 2021 v.13 no.23 pp. 27392-27399
ISSN:
1944-8252
Subject:
water vapor,   etc   ; electronics; polyamides;     Show all 3 Subjects
Abstract:
... Stretchable barrier films capable of maintaining high levels of moisture- and gas-barrier performance under significant mechanical strains are a critical component for wearable/flexible electronics and other devices, but realization of stretchable moisture-barrier films has not been possible due to the inevitable issues of strain-induced rupturing compounded with moisture-induced swelling of a str ...
DOI:
10.1021/acsami.1c03895

4. Development and Applications of ReaxFF Reactive Force Fields for Group-III Gas-Phase Precursors and Surface Reactions with Graphene in Metal–Organic Chemical Vapor Deposition Synthesis

Author:
Rajabpour, Siavash; Mao, Qian; Nayir, Nadire; Robinson, Joshua A.; van Duin, Adri C. T.
Source:
Journal of physical chemistry 2021 v.125 no.19 pp. 10747-10758
ISSN:
1932-7455
Subject:
vapors,   etc   ; graphene; thermal degradation;     Show all 3 Subjects
Abstract:
... Two-dimensional (2D) materials exhibit a wide range of optical, electronic, and quantum properties divergent from their bulk counterparts. To realize scalable 2D materials, metal–organic chemical vapor deposition (MOCVD) is often used. Here, we report two ReaxFF reactive force fields, GaCH-2020 and InCH-2020, which were developed to investigate the MOCVD gas-phase reactions of Ga and In film growt ...
DOI:
10.1021/acs.jpcc.1c01965

5. Subslab Depressurization Versus Subslab Ventilation: Insights from Recent Research

Author:
McAlary, Todd A.
Source:
Ground water monitoring & remediation 2021 v.41 no.2 pp. 132-137
ISSN:
1069-3629
Subject:
vapors,   etc   ; air; groundwater; remediation;     Show all 4 Subjects
Abstract:
... Many vapor intrusion (VI) mitigation systems involve some form of gas extraction from below the concrete floor slab of a building to create a static vacuum below the slab that meets or exceeds a value specified in a guidance document or standard. This also results in some degree of ventilation below the floor slab, which reduces vapor concentrations and achieves some level of mass removal of targe ...
DOI:
10.1111/gwmr.12443

6. A non-luminescent polymorph of [(cyclohexyl isocyanide)₂Au]PF₆ that becomes luminescent upon grinding or exposure to dichloromethane vapor

Author:
Luong, Lucy M. C.; Olmstead, Marilyn M.; Balch, Alan L.
Source:
Chemical communications 2021 v.57 no.6 pp. 793-796
ISSN:
1364-548X
Subject:
vapors,   etc   ; luminescence; methylene chloride;     Show all 3 Subjects
Abstract:
... The discovery of a third, non-luminescent crystalline polymorph of [(C₆H₁₁NC)₂Au]PF₆ is reported. Remarkably, crystals of this polymorph are sensitive to mechanical pressure or to exposure to dichloromethane vapor. In both cases, the conversion produces the yellow, green luminescent polymorph of [(C₆H₁₁NC)₂Au]PF₆ and not the colorless, blue luminescent polymorph. ...
DOI:
10.1039/d0cc06161a

7. Design of Continuous Transport of the Droplet by the Contact-Boiling Regime

Author:
Wang, Shanlin; Zhao, Xiaofeng; Wu, Xian; Zhang, Qingyu; Teng, Yuancheng; Ahuja, Rajeev; Zhang, Youfa
Source:
Langmuir 2021 v.37 no.1 pp. 553-560
ISSN:
1520-5827
Subject:
vapor pressure; vapors,   etc   ; droplets; ethanol; liquids; models; temperature;     Show all 7 Subjects
Abstract:
... Joule-heat-driven directional transport of liquid droplets has comprehensive engineering applications in various water and thermal management, cooling systems, and self-cleaning. Generally, the driving force for the transport of liquid droplets was always observed at an extremely high Leidenfrost temperature, which limits the potential application between liquid boiling and Leidenfrost points. In ...
DOI:
10.1021/acs.langmuir.0c03256

8. Nanoparticle synthesis using two-coil tandem-type modulated induction thermal plasmas

Author:
Furukawa, Ryudai; Tanaka, Yasunori; Nakano, Yusuke; Akashi, Keita; Ishijima, Tatsuo; Watanabe, Shu; Sueyasu, Shiori; Nakamura, Keitaro
Source:
Powder technology 2021 v.389 pp. 460-470
ISSN:
0032-5910
Subject:
vapors,   etc   ; feedstocks; light; photocatalysis; temperature;     Show all 5 Subjects
Abstract:
... This report describes experimentally obtained results on nanoparticle synthesis using two-coil tandem-type modulated induction thermal plasma (tandem-MITP). The developed tandem-MITP is operated by two coils with independently modulated high-frequency coil current. Tandem-MITP can offer unique temporo-spatially controlled high-temperature fields in thermal plasmas, as well as high-rate quenching o ...
DOI:
10.1016/j.powtec.2021.05.057

9. Tailoring the surface morphology of carbon nanotube forests by plasma etching: A parametric study

Author:
Seo, Seungju; Kim, Sanha; Yamamoto, Shun; Cui, Kehang; Kodama, Takashi; Shiomi, Junichiro; Inoue, Taiki; Chiashi, Shohei; Maruyama, Shigeo; Hart, A. John
Source:
Carbon 2021 v.180 pp. 204-214
ISSN:
0008-6223
Subject:
vapors,   etc   ; carbon; carbon nanotubes; microstructure;     Show all 4 Subjects
Abstract:
... The top surface of carbon nanotube (CNT) “forests” produced by thermal chemical vapor deposition (CVD) often has a tangled morphology, owing to the self-organization of the CNTs at the initial stage of the CVD process. Removal of this top “crust” layer, without damaging the intrinsic microstructure of the CNT forest is often a key step for further applications. This paper studies the tailored use ...
DOI:
10.1016/j.carbon.2021.04.066

10. Vapor nanobubble-mediated photoporation constitutes a versatile intracellular delivery technology

Author:
Ramon, Jana; Xiong, Ranhua; De Smedt, Stefaan C.; Raemdonck, Koen; Braeckmans, Kevin
Source:
Current opinion in colloid & interface science 2021 v.54 pp. 101453
ISSN:
1359-0294
Subject:
vapors,   etc   ; cell membranes; nanobubbles; transfection;     Show all 4 Subjects
Abstract:
... Vapor nanobubble-mediated photoporation has evolved into a promising physical intracellular delivery technology. When irradiated with short but intense laser pulses, photothermal nanomaterials can generate vapor nanobubbles that, when they collapse, induce transient membrane pores through which exogenous effector molecules can be delivered into the cells. Interestingly, this technique offers high- ...
DOI:
10.1016/j.cocis.2021.101453

11. Performance of the honeycomb type sealings in organic vapour microturbines

Author:
Zaniewski, Dawid; Klimaszewski, Piotr; Klonowicz, Piotr; Lampart, Piotr; Witanowski, Łukasz; Jędrzejewski, Łukasz; Suchocki, Tomasz; Antczak, Łukasz
Source:
Energy 2021 v.226 pp. 120242
ISSN:
0360-5442
Subject:
vapors,   etc   ; energy; friction; seals; turbines;     Show all 5 Subjects
Abstract:
... An important issue during the design of turbine seal areas is the selection of a suitable structural solution. The article presents a short review of different types of seals already in use in turbine engineering with a view of their application in small ORC turbines. The main objective of the article is to investigate the performance of a one-sided labyrinth seal over shrouded rotor blades with h ...
DOI:
10.1016/j.energy.2021.120242

12. Effect of overlayer–substrate interaction on the coalescence behaviors of in-plane graphene/hexagonal boron nitride heterostructures

Author:
Pan, Jiaqi; Wei, Wei; Gong, Zhongmiao; Cui, Yi
Source:
Carbon 2021 v.177 pp. 19-25
ISSN:
0008-6223
Subject:
vapors,   etc   ; boron nitride; graphene; oxygen;     Show all 4 Subjects
Abstract:
... In-plane graphene/hexagonal boron nitride (h-BN) heterostructures show promising applications in novel two-dimensional electronic and optoelectronic devices. The quality of graphene/h-BN (G-BN) domain boundaries, which plays a critical role in device performances, depends on their coalescence. Here, the coalescing mechanism determined by the overlayer–substrate interaction and the growth dynamics ...
DOI:
10.1016/j.carbon.2021.01.149

13. Temperature dependent Raman scattering of directly grown twisted bilayer graphene film using LPCVD method

Author:
Papanai, Girija Shankar; Singh, Jasveer; Sharma, Nita Dilawar; Ansari, S.G.; Gupta, Bipin Kumar
Source:
Carbon 2021 v.177 pp. 366-376
ISSN:
0008-6223
Subject:
vapors,   etc   ; ambient temperature; foil; graphene;     Show all 4 Subjects
Abstract:
... To get insight into the thermal management of twisted bilayer graphene based devices, the interpretation of temperature variation on twisting properties becomes crucial. In this aspect, we report the temperature dependent Raman scattering of twisted bilayer graphene (tBLG) on the Si substrate having SiO₂ thickness 300 nm. The tBLG samples have been directly grown on the copper foil substrate using ...
DOI:
10.1016/j.carbon.2021.02.083

14. Diffusion Induced Different Distributions of Sulfur Clusters on Suspended and Supported Graphene

Author:
He, Yuqing; Shi, Diwei; Qu, Cangyu; Xu, Zhi; Chen, Li; Wang, Yiran; Yu, Zhaokuan; Ma, Ming
Source:
Journal of physical chemistry 2021 v.125 no.21 pp. 11722-11727
ISSN:
1932-7455
Subject:
vapors,   etc   ; graphene; physical chemistry; sulfur;     Show all 4 Subjects
Abstract:
... The distribution of nanoparticles (NPs) on graphene is crucial for the performance of the graphene-based device. Such a distribution would be obviously influenced by the supporting substrates of graphene which are essential for the device. However, there are only a few relevant studies. In this paper, we report the distinct difference in the distributions of sulfur clusters at the submicrometer sc ...
DOI:
10.1021/acs.jpcc.1c02526

15. Significantly Enhanced Thermoelectric Performance of Graphene through Atomic-Scale Defect Engineering via Mobile Hot-Wire Chemical Vapor Deposition Systems

Author:
Choi, Myungwoo; Novak, Travis G.; Byen, Jicheol; Lee, Hyejeong; Baek, Jinwook; Hong, Seouggu; Kim, Kisun; Song, Jaeyong; Shin, Hosun; Jeon, Seokwoo
Source:
ACS applied materials & interfaces 2021 v.13 no.20 pp. 24304-24313
ISSN:
1944-8252
Subject:
vapors,   etc   ; energy; graphene; thermal conductivity;     Show all 4 Subjects
Abstract:
... Over the years, numerous studies have attempted to develop two-dimensional (2D) materials for improving both the applicability and performance of thermoelectric devices. Among the 2D materials, graphene is one of the promising candidates for thermoelectric materials owing to its extraordinary electrical properties, flexibility, and nontoxicity. However, graphene synthesized through traditional met ...
DOI:
10.1021/acsami.1c04828

16. Growth of high-quality wafer-scale graphene on dielectric substrate for high-response ultraviolet photodetector

Author:
Chen, Yang; Jiang, Ke; Zang, Hang; Ben, Jianwei; Zhang, Shanli; Shi, Zhiming; Jia, Yuping; Lü, Wei; Li, Dabing; Sun, Xiaojuan
Source:
Carbon 2021 v.175 pp. 155-163
ISSN:
0008-6223
Subject:
vapors,   etc   ; carbonization; graphene; pollution; polymers;     Show all 5 Subjects
Abstract:
... Growth of graphene on dielectric substrates is crucial for its use in various electronic and optoelectronic devices, which may avoid the additional extrinsic defects and residual pollution originating from the essential transfer process of graphene grown by chemical vapor deposition on metal foils. However, the growth of high-quality and wafer-scale graphene on dielectric substrates is now still a ...
DOI:
10.1016/j.carbon.2020.12.055

17. Growth-Temperature Dependent Unpassivated Oxygen Bonds Determine the Gas Sensing Abilities of Chemical Vapor Deposition-Grown CuO Thin Films

Author:
Nanda, Aman; Singh, Vivek; Jha, Ravindra Kumar; Sinha, Jyoti; Avasthi, Sushobhan; Bhat, Navakanta
Source:
ACS applied materials & interfaces 2021 v.13 no.18 pp. 21936-21943
ISSN:
1944-8252
Subject:
vapors,   etc   ; hysteresis; oxygen; roughness; stoichiometry;     Show all 5 Subjects
Abstract:
... CuO is a multifunctional metal oxide excellent for chemiresistive gas sensors. In this work, we report CuO-based NO₂ sensors fabricated via chemical vapor deposition (CVD). CVD allows great control on composition, stoichiometry, impurity, roughness, and grain size of films. This endows sensors with high selectivity, responsivity, sensitivity, and repeatability, low hysteresis, and quick recovery. ...
DOI:
10.1021/acsami.1c01085

18. Improved Electrical Properties of AlGaN/GaN High-Electron-Mobility Transistors by In Situ Tailoring the SiNₓ Passivation Layer

Author:
Siddique, Anwar; Ahmed, Raju; Anderson, Jonathan; Holtz, Mark; Piner, Edwin L.
Source:
ACS applied materials & interfaces 2021 v.13 no.15 pp. 18264-18273
ISSN:
1944-8252
Subject:
vapors,   etc   ; X-ray diffraction; stoichiometry;     Show all 3 Subjects
Abstract:
... In situ metal–organic chemical vapor deposition growth of SiNₓ passivation layers is reported on AlGaN/GaN high-electron-mobility transistors (HEMTs) without surface damage. A higher SiNₓ growth rate, when produced by higher SiH₄ reactant gas flow, enables faster lateral coverage and coalescence of the initial SiNₓ islands, thereby suppressing SiH₄-induced III-nitride etching. The effect of in sit ...
DOI:
10.1021/acsami.1c01241

19. Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Author:
Tian, Xiaoyu; Wang, Lin; Li, Wei; Lin, Qianqian; Cao, Qiang
Source:
ACS applied materials & interfaces 2021 v.13 no.14 pp. 16952-16958
ISSN:
1944-8252
Subject:
vapors,   etc   ; iodides; lasers; lead; photoluminescence;     Show all 5 Subjects
Abstract:
... Organic–inorganic halide perovskites have excellent intrinsic properties, such as long carrier lifetime, high photoluminescence quantum yield, and high gain, in whispering gallery mode (WGM) cavities by facile vapor self-assembly or solution process, which make them competitive for high-performance microlasers. However, the performance of perovskite-based microlasers is severely limited by the fab ...
DOI:
10.1021/acsami.0c21824

20. Stable and Self-Powered Solar-Blind Ultraviolet Photodetectors Based on a Cs₃Cu₂I₅/β-Ga₂O₃ Heterojunction Prepared by Dual-Source Vapor Codeposition

Author:
Ma, Jingli; Xia, Xiaochuan; Yan, Su; Li, Ying; Liang, Wenqing; Yan, Jingjing; Chen, Xu; Wu, Di; Li, Xinjian; Shi, Zhifeng
Source:
ACS applied materials & interfaces 2021 v.13 no.13 pp. 15409-15419
ISSN:
1944-8252
Subject:
vapors,   etc   ; air; crystal structure; encapsulation;     Show all 4 Subjects
Abstract:
... Self-powered solar-blind ultraviolet (UV) photodetectors have drawn worldwide attention in recent years because of their important applications in military and civilian areas. In this study, a dual-source vapor codeposition technique was employed, for the first time, to prepare a nontoxic copper halide Cs₃Cu₂I₅, which was integrated with the β-Ga₂O₃ wafer to construct a type-II heterojunction for ...
DOI:
10.1021/acsami.1c00387