PubAg

Main content area

You searched for: Subject "absorption" Remove constraint Subject: "absorption"
Start Over

Search

38,785  Search Results

« Previous | 1 - 20 of 38,785 |
Number of results to display per page

Search Results

1. Aligned Fe microfiber reinforced epoxy composites with tunable electromagnetic properties and improved microwave absorption

Author:
Qing, Yuchang; Nan, Hanyi; Jia, Hongyao; Min, Dandan; Zhou, Wancheng; Luo, Fa
Source:
Journal of materials science 2019 v.54 no.6 pp. 4671-4679
ISSN:
0022-2461
Subject:
absorption,   etc   ; epoxides; iron; permeability;     Show all 4 Subjects
Abstract:
... Aligned Fe microfiber/epoxy composites (FMF/EP) were prepared by shear force. The effects of the alignment on the morphology, electromagnetic properties and microwave absorption performances were studied. The results showed that the FMF inclines to be aligned uniformly after alignment treatment. The aligned FMF/EP composite exhibits higher complex permeability and lower complex permittivity in the ...
DOI:
10.1007/s10853-018-03192-y

2. A simple strategy to improve the sensitivity of probe molecules on SERS substrates

Author:
Sun, Chengbin; Chen, Tingkun; Ruan, Weidong; Jung, Young Mee; Cong, Qian; Zhao, Bing
Source:
Talanta 2019 v.195 pp. 221-228
ISSN:
0039-9140
Subject:
absorption,   etc   ; Raman spectroscopy; detection limit;     Show all 3 Subjects
Abstract:
... In this work, we report a simple strategy to improve the detection sensitivity as well as the spectral quality of probe molecules on surface-enhanced Raman scattering (SERS) substrates. On normal SERS substrates, due to the decreased absorption capacity and changes in the molecule orientations, SERS signals disappear when the analyte molecule concentrations reach a limit value. To solve this probl ...
DOI:
10.1016/j.talanta.2018.11.040

3. Wave-body interactions among energy absorbers in a wave farm

Author:
Zhong, Qian; Yeung, Ronald W.
Source:
Applied energy 2019 v.233-234 pp. 1051-1064
ISSN:
0306-2619
Subject:
absorption,   etc   ; energy; farms; geometry; hydrodynamics;     Show all 5 Subjects
Abstract:
... A semi-analytical method is developed to investigate surface-wave interactions among an array of wave-energy converters, each modeled as a truncated cylinder, and the interaction effects on power absorption from the array is studied. Each cylinder can have independent movements with six degrees of freedom. The method of matched eigen-function expansions is applied to solve the wave radiation probl ...
DOI:
10.1016/j.apenergy.2018.09.131

4. Investigation of multiband plasmonic metamaterial perfect absorbers based on graphene ribbons by the phase-coupled method

Author:
Li, Hongju; Ji, Chuansheng; Ren, Yongze; Hu, Jigang; Qin, Meng; Wang, Lingling
Source:
Carbon 2019 v.141 pp. 481-487
ISSN:
0008-6223
Subject:
absorption,   etc   ; angle of incidence; graphene;     Show all 3 Subjects
Abstract:
... We develop an original phase-coupled method to realize multispectral metamaterial near-unity absorbers based on spatially separated graphene ribbon arrays with mid-infrared plasmonic resonances. The results both from the coupled-mode theory and finite-difference time-domain simulations reveal that in addition to the single-band absorption enabled by the bi-layer identical ribbon arrays, the outsta ...
DOI:
10.1016/j.carbon.2018.10.002

5. Multifunctional broadband microwave absorption of flexible graphene composites

Author:
Zhang, Kai-Lun; Zhang, Jun-Ying; Hou, Zhi-Ling; Bi, Song; Zhao, Quan-Liang
Source:
Carbon 2019 v.141 pp. 608-617
ISSN:
0008-6223
Subject:
absorption,   etc   ; graphene; magnetism; polypropylenes; robots;     Show all 5 Subjects
Abstract:
... Stable broadband microwave absorption is widely interested for their irreplaceable role in stealth technology for multiband microwave communication and detection. In this paper, a flexible broadband microwave absorber with self-recoverability was fabricated by self-assembling graphene sheets into polypropylene 3D framework. The as-fabricated absorber has a full-band absorption (more than 90%) in t ...
DOI:
10.1016/j.carbon.2018.10.024

6. Interregional carbon compensation cost forecast and priority index calculation based on the theoretical carbon deficit: China as a case

Author:
Yang, Guangchun; Shang, Peipei; He, Lichun; Zhang, Yingchun; Wang, Ying; Zhang, Fei; Zhu, Lin; Wang, Yong
Source:
The Science of the total environment 2019 v.654 pp. 786-800
ISSN:
0048-9697
Subject:
absorption,   etc   ; carbon; economic development; emissions; models; China;     Show all 6 Subjects
Abstract:
... Interregional carbon compensation is an important part of ecological compensation. An accurate accounting of the interregional carbon compensation cost is the foundation for establishing a carbon compensation mechanism. Corresponding to the actual carbon deficit, this paper advances, for the first time, the concept of the theoretical carbon deficit and, improves the calculation method of the inter ...
DOI:
10.1016/j.scitotenv.2018.11.134

7. Thermodynamic considerations on MEA absorption: Whether thermodynamic cycle could be used as a tool for energy efficiency analysis

Author:
Wang, Junyao; Sun, Taiwei; Zhao, Jun; Deng, Shuai; Li, Kaixiang; Xu, Yaofeng; Fu, Jianxin
Source:
Energy 2019 v.168 pp. 380-392
ISSN:
0360-5442
Subject:
absorption,   etc   ; absorbents; carbon; energy efficiency; ethanolamine; heat;     Show all 6 Subjects
Abstract:
... Regeneration heat duty is not the only metric for an absorbent, but it is one of the most decisive factors that define the performance of chemical absorption carbon capture technologies. Nevertheless, from the thermodynamic point of view, there are still insufficient studies on evaluating and analyzing the energy efficiency performance of liquid-phase chemisorption technologies, especially conside ...
DOI:
10.1016/j.energy.2018.11.084

8. Constructing hollow graphene nano-spheres confined in porous amorphous carbon particles for achieving full X band microwave absorption

Author:
Xu, Hailong; Yin, Xiaowei; Zhu, Meng; Li, Minghang; Zhang, Heng; Wei, Hanjun; Zhang, Litong; Cheng, Laifei
Source:
Carbon 2019 v.142 pp. 346-353
ISSN:
0008-6223
Subject:
absorption,   etc   ; catalytic activity; cobalt; graphene; nanospheres; pyrolysis;     Show all 6 Subjects
Abstract:
... The development of high-performance carbonaceous microwave absorbers to achieve full X band (8.2–12.4 GHz) efficient microwave absorption with lower filler loading ratio is highly desirable but remains challenging. Here, a kind of hollow graphene nano-spheres uniformly confined in porous amorphous carbon particles (HGS@PAC) are fabricated via a facile pyrolysis of bi-metal organic framework (bi-MO ...
DOI:
10.1016/j.carbon.2018.10.056

9. Perfect light absorption in graphene by two unpatterned dielectric layers and potential applications

Author:
Zhu, Jinfeng; Li, Chawei; Ou, Jun-Yu; Liu, Qing Huo
Source:
Carbon 2019 v.142 pp. 430-437
ISSN:
0008-6223
Subject:
absorption,   etc   ; absorptivity; cost effectiveness; graphene; photons;     Show all 5 Subjects
Abstract:
... In the spectral range from ultraviolet to near infrared, graphene lacks the capability to support plasmon polaritons, and has low optical absorptivity for applications due to its extremely small thickness. Many photonic structures based on sophisticated nanofabrication or metal plasmonics have been adopted to conquer this limitation, but they suffer from high expenses or metal parasitic losses. He ...
DOI:
10.1016/j.carbon.2018.10.073

10. Power-to-load balancing for heaving asymmetric wave-energy converters with nonideal power take-off

Author:
Tom, Nathan M.; Madhi, Farshad; Yeung, Ronald W.
Source:
Renewable energy 2019 v.131 pp. 1208-1225
ISSN:
0960-1481
Subject:
absorption,   etc   ; energy conversion; hydrodynamics; torque; water power;     Show all 5 Subjects
Abstract:
... The aim of this paper is to maximize the power-to-load ratio for asymmetric wave energy converters undergoing heave motion. Linear hydrodynamic theory is used to calculate bounds of the expected time-averaged power (TAP) and corresponding surge-restraining force, pitch-restraining torque, and power take-off (PTO) control force with the assumption of sinusoidal displacement. This paper formulates a ...
DOI:
10.1016/j.renene.2017.11.065

11. Tuning microwave absorption properties of multi-walled carbon nanotubes by surface functional groups

Author:
Hu, Chenglong; Liu, Haopeng; Zhang, Yanhui; Zhang, Mu; Yu, Jieyi; Liu, Xianguo; Zhang, Xuefeng
Source:
Journal of materials science 2019 v.54 no.3 pp. 2417-2426
ISSN:
0022-2461
Subject:
absorption,   etc   ; carbon nanotubes; electrical conductivity; engineering; moieties;     Show all 5 Subjects
Abstract:
... Multi-walled carbon nanotubes (MWCNTs) have been proven effective for microwave absorption due to the high dielectric loss capacity; however, the influence of surface functional groups on the absorption efficiency still remains unknown. Herein, we investigated the microwave absorption properties of pristine MWCNTs, hydroxyl-containing MWCNTs and carboxyl-containing MWCNTs, evidencing the absorptio ...
DOI:
10.1007/s10853-018-2895-y

12. Electrochemical Reflective Absorption Microscopy for Probing the Local Diffusion Behavior in the Electrochemical Interface

Author:
Pan, Yu-Yi; Zong, Cheng; Huang, Ya-Jun; Lyu, Rui-Qi; Dai, Yin-Zhen; Wang, Lei; Ren, Bin
Source:
Analytical chemistry 2019 v.91 no.4 pp. 2831-2837
ISSN:
1520-6882
Subject:
absorption,   etc   ; absorbance; electrochemistry; electrodes; light microscopy;     Show all 5 Subjects
Abstract:
... Electrochemical interfaces determine the performance of electrochemical devices, including energy-related systems. An in-depth understanding of the heterogeneous interfaces requires in situ techniques with high sensitivity and high temporal and spatial resolution. We develop here an electrochemical reflective absorption microscope (EC-RAM) by using the absorption signals of reacting species with a ...
DOI:
10.1021/acs.analchem.8b04735

13. Optimal design of generators for H2O/LiBr absorption chiller with multi-heat sources

Author:
Lee, Su Kyoung; Lee, Jae Won; Lee, Hoseong; Chung, Jin Taek; Kang, Yong Tae
Source:
Energy 2019 v.167 pp. 47-59
ISSN:
0360-5442
Subject:
absorption,   etc   ; heat recovery; kriging; models; temperature;     Show all 5 Subjects
Abstract:
... In this paper, the various optimized generators for H2O/LiBr absorption chiller with multi-heat sources are discussed. While the previous optimization has been mainly conducted for a single element, the integrated generation system including high/low temperature generator and waste heat recovery generator is optimized in this paper. A practical modeling method is proposed for the high/low temperat ...
DOI:
10.1016/j.energy.2018.10.185

14. Effect of phase formation on hydrogen storage properties in Ti-V-Mn alloys by zirconium substitution

Author:
Chen, X.Y.; Chen, R.R.; Ding, X.; Fang, H.Z.; Li, X.Z.; Ding, H.S.; Su, Y.Q.; Guo, J.J.; Fu, H.Z.
Source:
Energy 2019 v.166 pp. 587-597
ISSN:
0360-5442
Subject:
absorption,   etc   ; alloys; energy; hydrogen; hysteresis; zirconium;     Show all 6 Subjects
Abstract:
... In order to improve hydrogen storage properties of Ti23V40Mn37 alloy with the two-phase mixture of BCC and C14 Laves, the alloys with different Zr (x = 0, 2, 4, 6, 8 and 10, at.%) partly substituting for Ti have been produced. The results show that the primary (dendrite) BCC phase decreases and C14 Laves phase increases with increasing Zr. The secondary (blocky) BCC phase appears when Zr content i ...
DOI:
10.1016/j.energy.2018.10.121

15. Absorption heat transformers: Sensitivity study to answer existing discrepancies

Author:
Wakim, Michel; Rivera-Tinoco, Rodrigo
Source:
Renewable energy 2019 v.130 pp. 881-890
ISSN:
0960-1481
Subject:
absorption,   etc   ; exergy; heat; renewable energy sources; temperature;     Show all 5 Subjects
Abstract:
... This work aims at bringing an analysis upon the heterogeneity and the accuracy of results expressed by authors studying absorption heat transformers (AHTs). Existing work is based on specific operating conditions for specific applications, which shows that detailed thermodynamic and sensitivity studies for a wide range of operating conditions are lacking. Hence, this work shows the impact of wide ...
DOI:
10.1016/j.renene.2018.06.111

16. Optically-active nanocrystals for inner filter effect-based fluorescence sensing: Achieving better spectral overlap

Author:
Zhang, Jinyi; Zhou, Ronghui; Tang, Dandan; Hou, Xiandeng; Wu, Peng
Source:
Trends in analytical chemistry 2019 v.110 pp. 183-190
ISSN:
0165-9936
Subject:
absorption,   etc   ; energy transfer; fluorescence; fluorescent dyes; nanocrystals;     Show all 5 Subjects
Abstract:
... Among various photophysical processes for fluorescence modulation, inner filter effect (IFE) is well-known for its simplicity and no requirement of the distances between the fluorophores and the corresponding modulators. Theoretically, the key to maximize the sensitivity of IFE-based fluorescent assays is to enlarge the overlap between the absorption of the absorber and the excitation/emission of ...
DOI:
10.1016/j.trac.2018.11.002

17. Porphyrin-Containing Polymer as a Superior Blue Light-Absorbing Additive To Afford High-Jₛc Ternary Solar Cells

Author:
Li, Chia-Hua; Chang, Chia-Chih; Hsiao, Yu-Hsuan; Peng, Shih-Hao; Su, Yi-Jia; Heo, Soo-won; Tajima, Keisuke; Tsai, Ming-Chi; Lin, Ching-Yao; Hsu, Chain-Shu
Source:
ACS applied materials & interfaces 2018 v.11 no.1 pp. 1156-1162
ISSN:
1944-8252
Subject:
absorption,   etc   ; polymers; solar cells;     Show all 3 Subjects
Abstract:
... Integrating an additional component featuring complementary light absorption into binary polymer solar cells is a superior tactic to ameliorate solar cell efficiency and stability. An appropriate additive not only extends the absorption range but may also facilitate charge separation and transport processes. In this work, we elucidate the effects of incorporating a porphyrin-containing conjugated ...
DOI:
10.1021/acsami.8b19060

18. Tacticity effects in side-chain photoluminescent polymers

Author:
ChiangThese authors contributed equally., Cheng-Hung; Huang, Shih-Hung; Nien, Po-Chun; Chiang, Yeo-Wan; Tsai, Jing-Cherng
Source:
Chemical communications 2018 v.54 no.97 pp. 13706-13709
ISSN:
1364-548X
Subject:
absorption,   etc   ; photoluminescence; polymerization; polymers;     Show all 4 Subjects
Abstract:
... Stereoregular side-chain photoluminescent (PL) polymers were synthesized via the stereospecific polymerization of 9,9-dibutyl-2-(4-vinylphenyl)-9H-fluorene. The resulting isotactic, syndiotactic and atactic poly(9,9-dibutyl-2-(4-vinylphenyl)-9H-fluorene) polymers were used as stereoregular polymer samples for examining the configurational tacticity effect on their PL properties. Our results reveal ...
DOI:
10.1039/c8cc06772d

19. Correction to: High CO2 absorption of O-carboxymethylchitosan synthesised from chitosan

Author:
Kumar, Pradeep; Faujdar, Ekta; Singh, Raj K.; Paul, Subham; Kukrety, Aruna; Chhibber, Vijay K.; Ray, Siddharth S.
Source:
Environmental chemistry letters 2018 v.16 no.3 pp. 1033-1034
ISSN:
1610-3653
Subject:
absorption,   etc   ; carbon dioxide; chitosan;     Show all 3 Subjects
Abstract:
... In the original publication, panel b in Fig. 3 is a duplicate of panel ...
DOI:
10.1007/s10311-018-0719-6

20. Versatile Approach for Reliable Determination of Both High and Low Values of Luminescence Quantum Yields

Author:
Nawara, Krzysztof; Rana, Anup; Panda, Pradeepta K.; Waluk, Jacek
Source:
Analytical chemistry 2018 v.90 no.17 pp. 10139-10143
ISSN:
1520-6882
Subject:
absorption,   etc   ; luminescence; protocols;     Show all 3 Subjects
Abstract:
... The determination of luminescence quantum yields by means of relative methods requires setting identical experimental conditions for both sample and reference compounds. This requirement has a critical impact on the applicability of these protocols, as it does not allow for the precise determination of low quantum-yield values using well-characterized high-quantum-yield standards. We show that usi ...
DOI:
10.1021/acs.analchem.8b02751