Mechanical and microstructural properties of cement pastes containing carbon nanotubes and carbon nanotube-silica core-shell structures, exposed to elevated temperature

2019 ◽  
Vol 95 ◽  
pp. 193-204 ◽  
Author(s):  
Pawel Sikora ◽  
Mohamed Abd Elrahman ◽  
Sang-Yeop Chung ◽  
Krzysztof Cendrowski ◽  
Ewa Mijowska ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Elevated Temperature ◽  
Shell Structures ◽  
Core Shell ◽  
Microstructural Properties ◽  
Cement Pastes ◽  
Silica Core ◽  
Mechanical And Microstructural Properties

Multifunctional bioceramic-based composites reinforced with silica-coated carbon nanotube core-shell structures

2017 ◽  
Vol 43 (18) ◽  
pp. 16084-16093 ◽  
Author(s):  
Zhong Li ◽  
Shuguang Bi ◽  
Brianna C. Thompson ◽  
Ruitao Li ◽  
Khiam Aik Khor
Keyword(s):  
Carbon Nanotube ◽  
Shell Structures ◽  
Core Shell ◽  
Coated Carbon

Carbon nanotube–polyaniline nanotube core–shell structures for electrochemical applications

2014 ◽  
Vol 57 ◽  
pp. 137-142 ◽  
Author(s):  
Gedela V. Ramana ◽  
Vadali V.S.S. Srikanth ◽  
Balaji Padya ◽  
Pawan K. Jain
Keyword(s):  
Carbon Nanotube ◽  
Shell Structures ◽  
Core Shell ◽  
Electrochemical Applications

scholarly journals Single-walled carbon nanotube/polystyrene core–shell hybrids: synthesis and photoluminescence properties

2018 ◽  
Vol 6 (17) ◽  
pp. 4786-4792 ◽  
Author(s):  
L. Orcin-Chaix ◽  
G. Trippé-Allard ◽  
C. Voisin ◽  
H. Okuno ◽  
V. Derycke ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Shell Structures ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

Core–shell structures made of SWNTs and polystyrene are synthesized; the hybrids can be easily manipulated in solution and exhibit photoluminescence in film.

Benefits of Silica Core–Shell Structures on the Temperature Sensing Properties of Er,Yb:GdVO4 Up-Conversion Nanoparticles

2016 ◽  
Vol 8 (11) ◽  
pp. 7266-7273 ◽  
Author(s):  
Oleksandr A. Savchuk ◽  
Joan J. Carvajal ◽  
C. Cascales ◽  
M. Aguiló ◽  
F. Díaz
Keyword(s):  
Temperature Sensing ◽  
Shell Structures ◽  
Core Shell ◽  
Sensing Properties ◽  
Silica Core

A Stretched Carbon Nanotube with a High-Density of Topological Defect

2011 ◽  
Vol 236-238 ◽  
pp. 2225-2228
Author(s):  
Fan Yan Meng ◽  
Gui Sheng Wang ◽  
San Qiang Shi ◽  
Shigenobu Ogata
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Elevated Temperature ◽  
Topological Defect ◽  
Tube Wall ◽  
Heating Temperature ◽  
Topological Defects ◽  
Theoretical Method ◽  
High Density ◽  
Single Walled Carbon Nanotube

We have developed a theoretical method to obtain a single-walled carbon nanotube (SWCNT) with a high density of topological defects. Carbon nanotubes (CNTs) sustain elastic elongation up to 15-30% at low temperature because of the sufficiently high barrier of bond rotations. A large number of topological defects are activated simultaneously and widely distributed over the entire tube wall after heating the stretched tube to an elevated temperature. This is driven by the internal energy of the strained carbon nanotubes. The manner in which topological defects are distributed is affected by the initial strain and the heating temperature. Nanotubes with a large number of topological defects achieve the elongation without breaking.

scholarly journals Carbon-Nanotube Based Thermoelectrical Paste for Enhancing Solar Cell Effciency

2018 ◽  
Vol 64 ◽  
pp. 02005 ◽  
Author(s):  
Fathi Sanad Mohamed ◽  
Shaker Ahmed ◽  
O. Abdellatif Sameh ◽  
Elmahallawi Iman ◽  
A. Ghali Hani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cell ◽  
Carbon Nanotube ◽  
Elevated Temperature ◽  
Seebeck Coefficient ◽  
Passive Cooling ◽  
Efficiency Enhancement ◽  
Thermal Paste ◽  
Temperature Conditions ◽  
Cooling Technique

A super-passive cooling technique based on a thermal paste is proposed for PV efficiency enhancement in elevated temperature conditions. A mixture between carbon nanotubes and graphene having a promising Seebeck coefficient is chosen. An overall enhancement in efficiency by around 58% was reached while thermoelectrically supplying hundreds of micro-Watt per PV Watt.

Dynamic analysis of functionally graded carbon nanotube–reinforced shell structures with piezoelectric layers under dynamic loads

2019 ◽  
Vol 26 (13-14) ◽  
pp. 1157-1172 ◽  
Author(s):  
Hanen Mallek ◽  
Hanen Jrad ◽  
Mondher Wali ◽  
Amir Kessentini ◽  
Fehmi Gamaoun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Functionally Graded ◽  
Dynamic Responses ◽  
Shell Structures ◽  
Geometrical Parameters ◽  
Transverse Shear Strain ◽  
Thickness Direction ◽  
Reinforced Composite ◽  
Piezoelectric Layers

This research makes a first attempt to investigate the dynamic characteristics of functionally graded carbon nanotube–reinforced composite plates and shell structures with surface-bonded piezoelectric layers. A variational formulation is derived based on the linear double director shell theory to ensure realistic parabolic variation of transverse shear strain along the thickness direction. The assumed natural strains method is adopted to enhance the accuracy of the four-node piezoelectric shell element developed in this study. Numerical studies are conducted to validate the efficiency and numerical stability of the proposed model to predict the behavior of piezolaminated composite shell structures. Furthermore, dynamic responses are extended to functionally graded carbon nanotube–reinforced composite shells covered by two active layers. The host structure is reinforced by single-walled carbon nanotubes, which are assumed to be graded through the thickness direction with different types of distributions and embedded in a polymer matrix. The effect of the volume fractions, distribution type, and geometrical parameters of the carbon nanotubes is examined.

Sign in / Sign up

Export Citation Format

Share Document