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1. Vapor pressure measurements of AgBr by the Knudsen effusion method

Author:
Nagata, Tetsuya; Iizuka, Atsushi; Shibata, Etsuro
Source:
Thermochimica acta 2019 v.671 pp. 32-35
ISSN:
0040-6031
Subject:
vapor pressure; vapors,   etc   ; equations; liquids; silver; temperature;     Show all 6 Subjects
Abstract:
... The vapor pressure of silver bromide (AgBr) liquid was measured by the Knudsen effusion method. The ratio of the vapor species of silver bromide was calculated from the literature Hildenbrand and Lau, Pankratz [3,6], and the vapor pressures were calculated on the basis of the ratio. As reported in the literature Hildenbrand and Lau [3], we considered the vapor species to be monomers (AgBr) and tri ...
DOI:
10.1016/j.tca.2018.10.027

2. Efficient and controllable growth of vertically oriented graphene nanosheets by mesoplasma chemical vapor deposition

Author:
Zhang, Huan; Wu, Sudong; Lu, Ziyu; Chen, Xinchun; Chen, Qixian; Gao, Pingqi; Yu, Tianbao; Peng, Zhijian; Ye, Jichun
Source:
Carbon 2019 v.147 pp. 341-347
ISSN:
0008-6223
Subject:
vapors,   etc   ; graphene; hydrogen; nanosheets;     Show all 4 Subjects
Abstract:
... Owing to the unique nanoarchitecture and graphene in nature, the vertically oriented graphene nanosheets (VGN) possesses many promising properties and holds great potential for various applications. Although the plasma-enhanced chemical vapor deposition (PECVD) techniques have been the effective and widely used approaches, they remain the challenge for the controllable and efficient growth of VGN ...
DOI:
10.1016/j.carbon.2019.01.042

3. Experimental investigation on the effect of working fluid charge in a small-scale Organic Rankine Cycle under off-design conditions

Author:
Liu, Liuchen; Zhu, Tong; Wang, Tiantian; Gao, Naiping
Source:
Energy 2019 v.174 pp. 664-677
ISSN:
0360-5442
Subject:
vapors,   etc   ; liquids; prototypes; torque;     Show all 4 Subjects
Abstract:
... Off-design performance evaluation is one of the major topics of ORC-related investigations. However, there is a lack of adequate research on the influence of working fluid charge on system off-design performances. This paper presents the experimental results of a 3 kWe ORC prototype. Effect of three different working fluid charge on system key operating parameters have been investigated. The perfo ...
DOI:
10.1016/j.energy.2019.03.013

4. Oxygenated (113) diamond surface for nitrogen-vacancy quantum sensors with preferential alignment and long coherence time from first principles

Author:
Li, Song; Chou, Jyh-Pin; Wei, Jie; Sun, Minglei; Hu, Alice; Gali, Adam
Source:
Carbon 2019 v.145 pp. 273-280
ISSN:
0008-6223
Subject:
vapors,   etc   ; carbon; oxygen;     Show all 3 Subjects
Abstract:
... Shallow nitrogen-vacancy (NV) center in diamond is promising in quantum sensing applications however its sensitivity has been limited by surface terminators and defects. There is an immediate quest to find suitable diamond surfaces for NV sensors. In this work, the surface terminators of (113) diamond to host shallow NV centers are studied by means of first principles calculations. Results indicat ...
DOI:
10.1016/j.carbon.2019.01.016

5. Achieving High Doping Concentration by Dopant Vapor Deposition in Organic Solar Cells

Author:
Yan, Han; Tang, Yabing; Meng, Xiangyi; Xiao, Tong; Lu, Guanghao; Ma, Wei
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4178-4184
ISSN:
1944-8252
Subject:
vapors,   etc   ; annealing; solar cells;     Show all 3 Subjects
Abstract:
... Compared with the interfacial doping, molecular doping in bulk heterojunction (BHJ) is a more direct but challenging approach to optimize the photovoltaic performance in organic solar cells (OSCs). One of the main obstacles for its success is the low doping concentration because of the morphological damage. Starting from the phase diagram analysis, we discover that the unpreferred good miscibility ...
DOI:
10.1021/acsami.8b16162

6. A highly efficient and sulfur-tolerant Pd2Si/CNTs catalyst for hydrodesulfurization of dibenzothiophenes

Author:
Yang, Kaixuan; Chen, Xiao; Qi, Ji; Bai, Zongxuan; Zhang, Liangliang; Liang, Changhai
Source:
Journal of catalysis 2019 v.369 pp. 363-371
ISSN:
0021-9517
Subject:
vapors,   etc   ; catalysts; desulfurization; silicon;     Show all 4 Subjects
Abstract:
... A highly active and sulfur-tolerant 3 wt% Pd2Si/CNTs catalyst was prepared by chemical vapor deposition, in which dichlorodimethylsilane was used as an Si source. The as-prepared catalyst was used as an efficient catalyst for deep hydrodesulfurization (HDS) of dibenzothiophene and 4, 6-dimethyldibenzothiophene. The HDS activity over 3 wt% Pd2Si/CNTs is three times higher than that of the commercia ...
DOI:
10.1016/j.jcat.2018.11.013

7. Growth of graphene on non-catalytic substrate by controlling the vapor pressure of catalytic nickel

Author:
Baek, Jinwook; Kim, Jungmo; Kim, Jin; Shin, Byungha; Jeon, Seokwoo
Source:
Carbon 2019 v.143 pp. 294-299
ISSN:
0008-6223
Subject:
vapor pressure; vapors,   etc   ; catalysts; feedstocks; graphene; heat; nickel; temperature;     Show all 8 Subjects
Abstract:
... Here, we demonstrate a simple method of growing graphene directly on various dielectric substrate using vapor-phase metal catalyst via mobile hot-wire (MHW) assisted chemical vapor deposition (CVD). The MHW made of nickel (Ni) is utilized as an independent source of the metal vapor as well as a moving heat source. The hot-wire temperature (Tw, 800–1100 °C) and the total chamber pressure (Ptot, 0.1 ...
DOI:
10.1016/j.carbon.2018.11.027

8. Defects guided wrinkling in graphene on copper substrate

Author:
Pang, Zhenqian; Deng, Bing; Liu, Zhongfan; Peng, Hailin; Wei, Yujie
Source:
Carbon 2019 v.143 pp. 736-742
ISSN:
0008-6223
Subject:
vapors,   etc   ; copper; engineering; graphene; temperature;     Show all 5 Subjects
Abstract:
... Pristine graphene depositing on metallic substrates often wrinkles when the film-substrate system undergoes a temperature drop from the chemical vapor deposition (CVD) chamber to ambient environment. The pattern of wrinkles is governed by the crystallographic planes of the substrates and the defects in the film. In this paper, we report how commonly seen Stone-Wales defects and grain boundaries (G ...
DOI:
10.1016/j.carbon.2018.11.059

9. Research on controllable synthesis of silicon carbide whiskers and particles on graphite by chemical vapor reaction

Author:
Hua, Ye; Bai, Shuxin; Wan, Hong; Chen, Xingyu; Hu, Ting; Gong, Jinyu
Source:
Journal of materials science 2019 v.54 no.3 pp. 2016-2024
ISSN:
0022-2461
Subject:
vapors,   etc   ; graphene; silicon carbide; temperature;     Show all 4 Subjects
Abstract:
... In this paper, SiC with the morphologies of both particles and whiskers was grown on graphite surface by chemical vapor reaction method under different pressure conditions. According to these experimental discoveries, designed experiments with different reaction pressures and temperatures were studied in detail, and then, the influence factors were analyzed in theory. The results show that the sha ...
DOI:
10.1007/s10853-018-3016-7

10. Synthesis of ternary oxide Zn₂GeO₄ nanowire networks and their deep ultraviolet detection properties

Author:
Han, Xu; Feng, Shuanglong; Zhao, Yiming; Li, Lei; Zhan, Zhaoyao; Tao, Zhiyong; Fan, Yaxian; Lu, Wenqiang; Zuo, Wenbin; Fu, Dejun
Source:
RSC advances 2019 v.9 no.3 pp. 1394-1402
ISSN:
2046-2069
Subject:
vapors,   etc   ; nanowires; semiconductors; ultraviolet radiation;     Show all 4 Subjects
Abstract:
... Ternary oxide Zn₂GeO₄ with a wide bandgap of 4.84 eV, as a candidate for fourth generation semiconductors, has attracted a great deal of attention for deep ultraviolet (DUV) photodetector applications, because it is expected to be blind to the UV-A/B band (290–400 nm) and only responsive to the UV-C band (200–290 nm). Here, we report on the synthesis of Zn₂GeO₄ nanowire (NW) networks by lower pres ...
DOI:
10.1039/c8ra09307e

11. Strong exciton–photon coupling and polariton lasing in GaN microrod

Author:
Ghosh, Poulami; Yu, Dapeng; Hu, Tao; Liang, Jing; Chen, Zhanghai; Yingkai, Liu; Huang, Mingyuan
Source:
Journal of materials science 2019 v.54 no.11 pp. 8472-8481
ISSN:
0022-2461
Subject:
vapors,   etc   ; ambient temperature; energy; photons; wavelengths;     Show all 5 Subjects
Abstract:
... We report on the studies of strong exciton photon coupling and polariton lasing at room temperature from single GaN microrods grown by metal-organic vapor phase epitaxy technique. Emission spectra were recorded at room temperature by exciting GaN microrods with pulsed Nd:YAG laser of 355 nm wavelength at different excitation power density. Clear mode formation corresponding to Whispering gallery m ...
DOI:
10.1007/s10853-019-03493-w

12. A kinetic Monte Carlo model for the growth and etching of graphene during chemical vapor deposition

Author:
Chen, Shuai; Gao, Junfeng; Srinivasan, Bharathi M.; Zhang, Gang; Sorkin, Viacheslav; Hariharaputran, Ramanarayan; Zhang, Yong-Wei
Source:
Carbon 2019 v.146 pp. 399-405
ISSN:
0008-6223
Subject:
vapors,   etc   ; Monte Carlo method; graphene; models; nanomaterials;     Show all 5 Subjects
Abstract:
... Controlled growth and etching have been employed experimentally to achieve diverse graphene patterns via chemical vapor deposition (CVD). However, a theoretical framework that is able to accurately predict the controlled growth and etching kinetics based on their underlying mechanisms is not yet available. In this work, we formulate a kinetic Monte Carlo model to predict the pattern evolution, edg ...
DOI:
10.1016/j.carbon.2019.02.016

13. Semipolar ([Formula: see text]) InGaN/GaN red–amber–yellow light-emitting diodes on triangular-striped Si (100) substrate

Author:
Wang, Qi; Yuan, Guodong; Liu, Wenqiang; Zhao, Shuai; Liu, Zhiqiang; Chen, Yu; Wang, Junxi; Li, Jinmin
Source:
Journal of materials science 2019 v.54 no.10 pp. 7780-7788
ISSN:
0022-2461
Subject:
vapors,   etc   ; emissions; light emitting diodes; silicon; temperature;     Show all 5 Subjects
Abstract:
... The epitaxial growth of InGaN/GaN light-emitting diodes (LEDs) with high-indium (In) content on Si (100) substrate faces significant challenges. The study described in this paper focuses on semipolar yellow InGaN/GaN LEDs formed on a triangular-striped Si (100) substrate by metal organic chemical vapor deposition. By controlling the growth temperature of InGaN to modulate the In content of InGaN/G ...
DOI:
10.1007/s10853-019-03473-0

14. Tuning the morphology and chemical composition of MoS2 nanostructures

Author:
Radovsky, Gal; Shalev, Tom; Ismach, Ariel
Source:
Journal of materials science 2019 v.54 no.10 pp. 7768-7779
ISSN:
0022-2461
Subject:
vapors,   etc   ; chemical composition; fullerene; molybdenum disulfide; temperature;     Show all 5 Subjects
Abstract:
... Chemical vapor deposition has proven to be one of the most promising approaches to achieve large-scale and high-quality ultra-thin layered materials in general, and single- and few-layer transition metal dichalcogenides in particular. Therefore, the study of the conditions affecting the growth and the obtained structure (morphology and chemical composition) is of crucial importance in order to imp ...
DOI:
10.1007/s10853-019-03437-4

15. Construction of anisotropic fluorescent nanofibers assisted by electro-spinning and its optical sensing applications

Author:
Zhang, Fa-Heng; Jiang, Rui-Xue; Cao, Wei; Du, Bin; Cao, Ding-Yuan; Ding, Zhi-Jun; Li, Zhi-Jun
Source:
RSC advances 2019 v.9 no.22 pp. 12585-12589
ISSN:
2046-2069
Subject:
vapors,   etc   ; aniline; anisotropy; equipment; fluorescence; nanofibers; thermoplastics;     Show all 7 Subjects
Abstract:
... Fixing the gap between “nano-scaled” pieces and “product-scale” materials, devices or machines is an ineluctable challenge that people have to tackle. Herein, we show that combining self-assembly and electrospinning processes results in the fabrication of anisotropic fluorescent nanofibers (PDI@PVDF) in which the well-defined rod-like perylene bisimide derivative assemblies are embedded in a highl ...
DOI:
10.1039/c9ra00502a

16. Novel helical screw-fluidized bed reactor for bio-oil production in slow-pyrolysis mode: A preliminary study

Author:
Qureshi, Khan Muhammad; Abnisa, Faisal; Wan Daud, Wan Mohd Ashri
Source:
Journal of analytical and applied pyrolysis 2019
ISSN:
0165-2370
Subject:
vapors,   etc   ; biofuels; byproducts; liquids; oxygen; pyrolysis;     Show all 6 Subjects
Abstract:
... Slow pyrolysis has been generally recognized as an improper mode of bio-oil production because it produces a low liquid yield of ˜30 wt.%. This research introduces a type of innovation in which the designed helical screw-fluidized bed reactor can operate in the slow-pyrolysis mode to obtain high-yielding liquids. The concept of the reactor was designed to develop the fluidization condition by usin ...
DOI:
10.1016/j.jaap.2019.04.021

17. Vapor pressure of methylammonium halides. Part II: Vapor pressure and standard entropy of methylammonium bromide

Author:
Ivanov, I.L.; Mazurin, M.O.; Tsvetkov, D.S.; Malyshkin, D.A.; Sereda, V.V.; Zuev, A.Yu.
Source:
Thermochimica acta 2019 v.674 pp. 58-62
ISSN:
0040-6031
Subject:
vapor pressure,   etc   ; enthalpy; entropy; halides; sublimation; temperature;     Show all 6 Subjects
Abstract:
... The equilibrium vapor pressure of methylammonium bromide was measured as a function of temperature in the range of 433–503 K. Standard enthalpy and entropy of sublimation of CH3NH3Br at 298.15 K and 1 atm were determined as (196.7 ± 2.8) kJ·mol−1 and (280.0 ± 5.6) J·mol−1 K−1, respectively. The measured value of sublimation enthalpy was found to be in agreement with that directly calculated from t ...
DOI:
10.1016/j.tca.2019.02.008

18. Morphology Evolution of Graphene during Chemical Vapor Deposition Growth: A Phase-Field Theory Simulation

Author:
Zhuang, Jianing; Zhao, Wen; Qiu, Lu; Xin, John; Dong, Jichen; Ding, Feng
Source:
Journal of physical chemistry 2019 v.123 no.15 pp. 9902-9908
ISSN:
1932-7455
Subject:
vapors,   etc   ; graphene; mathematical models; physical chemistry;     Show all 4 Subjects
Abstract:
... In chemical vapor depositiongrowth, depending on the growth condition, graphene islands present various shapes, such as circular, hexagonal, square, rectangular star-like, and fractal. We present a systematic phase-field model study to explore the role of three key factors, carbon flux, precursor concentration on the metal surface, and diffusion of carbon precursors, in the determination of the gr ...
DOI:
10.1021/acs.jpcc.9b00761

19. Highly rough surface coatings via the ambient temperature deposition of thermosetting polymers

Author:
Mehanna, Yasmin A.; Upton, Rebekah L.; Crick, Colin R.
Source:
Journal of materials chemistry A 2019 v.7 no.13 pp. 7333-7337
ISSN:
2050-7496
Subject:
vapors,   etc   ; ambient temperature; coatings; manufacturing; polydimethylsiloxane;     Show all 5 Subjects
Abstract:
... The deposition of highly rough surface coatings is applicable to a wide range of scientific and manufacturing fields, particularly with respect to the control of surface morphology and substrate binding. The following article reports a technique (thermally-activated aerosol-assisted chemical vapour deposition – ta-AACVD) that is used to deposit a highly rough thermosetting polydimethylsiloxane (PD ...
DOI:
10.1039/c9ta01379b

20. Vapor transport deposited tin monosulfide for thin-film solar cells: effect of deposition temperature and duration

Author:
Lee, Dajeong; Cho, Jae Yu; Yun, Hee-Sun; Lee, Doh-Kwon; Kim, Taehoon; Bang, Kijoon; Lee, Yun Seog; Kim, Ho-Young; Heo, Jaeyeong
Source:
Journal of materials chemistry A 2019 v.7 no.12 pp. 7186-7193
ISSN:
2050-7496
Subject:
vapors,   etc   ; lighting; solar cells; temperature; tin;     Show all 5 Subjects
Abstract:
... The influence of the vapor transport deposition (VTD) conditions of tin sulfide (SnS) on the formation of secondary phases, preferred orientation, and solar cell performance is investigated in this study. It is concluded that 600 °C is the optimal growth temperature for the formation of pure SnS absorbers. When the growth temperature was 550 °C, the formation of secondary Sn₂S₃ and SnS₂ phases was ...
DOI:
10.1039/c8ta09820d