Pressure induced reactivity change on the side-wall of a carbon nanotube: A case study on the addition of singlet O2

The decline in the over ground utilizable space and increment in development of metro structures, cut and cover structures are winding up fairly difficult to conceptualize and build. In this examination, a nonlinear two dimensional limited component investigation was completed to show the New Austrian Tunneling Method (NATM) burrow developed in frail shake utilizing the business limited component with joint programming PHASE 2.The validity of the numerical modeling procedure performed by the author was checked by making back-analysis for an actual case study of Strengen Tunnel which is one of the biggest expressways in western Austria. A comprehensive parametric study was performed on a hypothetical circle tunnel. Two dimensional numerical simulations with the finite element with joint software PHASE 2 have been performed to ground behaviour with the results of the numerical analysis are presented and discussed for recommendations for future work. In general the tangential stress at side wall and crown obtained from finite element with joints are nearly equal or higher than the closed form solution and equivalent continuum.

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The role of atomistic simulations in probing the small-scale aspects of fracture—a case study on a single-walled carbon nanotube

Engineering Fracture Mechanics ◽

10.1016/j.engfracmech.2005.01.009 ◽

2005 ◽

Vol 72 (13) ◽

pp. 2037-2071 ◽

Cited By ~ 53

Author(s):

Qiang Lu ◽

Baidurya Bhattacharya

Keyword(s):

Carbon Nanotube ◽

Atomistic Simulations ◽

Small Scale ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon

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Electron emission from the side wall of an individual multiwall carbon nanotube

Carbon ◽

10.1016/j.carbon.2006.09.030 ◽

2007 ◽

Vol 45 (2) ◽

pp. 281-284 ◽

Cited By ~ 25

Author(s):

Guangyu Chai ◽

Lee Chow

Keyword(s):

Carbon Nanotube ◽

Electron Emission ◽

Side Wall ◽

Multiwall Carbon Nanotube ◽

Multiwall Carbon

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Monitoring Data Analysis and Structural Reliability of Foundation Pit During Construction: A Case Study

10.21203/rs.3.rs-877543/v1 ◽

2021 ◽

Author(s):

Guowang Meng ◽

Hongbin Qiu ◽

Yajie ZHao ◽

Bo Wu ◽

Da Gao ◽

...

Keyword(s):

Structural Reliability ◽

Evaluation Method ◽

Side Wall ◽

Reliability Evaluation ◽

Effective Solution ◽

Ground Settlement ◽

Foundation Pit ◽

Structure Deformation ◽

Reliability Level

Abstract In order to solve the problem that only considering the deformation of the side wall or the ground settlement of a single factor of the reliability evaluation may lead to insecurity, a deformation reliability evaluation method considering both the deformation of the side wall and the ground settlement is proposed. This evaluation method is used to evaluate the reliability of foundation pit structure deformation of Jinan metro in Shandong Province, China. Through the study of the deformation of the side wall and ground settlement loss on six profiles, the influence of the coefficient (λ、α and β) on the reliability is considered, and the recommended value of the coefficient (λ、α and β) is given. The reliability of six profiles is evaluated and the reliability level is obtained successfully. The reliability evaluation method can solve the problem that considering a single failure mode may lead to insecurity, and can provide an effective solution to the reliability evaluation of foundation pit retaining structure deformation.

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Zeolite-templated Carbon Network: A Beta Zeolite Case Study

MRS Advances ◽

10.1557/adv.2020.183 ◽

2020 ◽

Vol 5 (14-15) ◽

pp. 751-756 ◽

Cited By ~ 1

Author(s):

Eliezer F. Oliveira ◽

Leonardo D. Machado ◽

Ray H. Baughman ◽

Douglas S. Galvao

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Beta Zeolite ◽

Beta Zeolites ◽

Preliminary Study ◽

The One ◽

Dynamics Simulations ◽

Carbon Nanotube Networks ◽

Carbon Network

ABSTRACTIn this work, we report a preliminary study, based on molecular dynamics simulations, about 3D carbon nanotube networks that could be formed inside the beta zeolites. We investigated their structural stability and mechanical properties. Our results show that from all possible carbon nanotubes that can be embedded inside the channels of the beta zeolite, the one with chirality (6,0) is the most stable. Using the carbon nanotube (6,0), it is possible to build 3D structures with both all (higher density) and only partially (lower density) filled zeolite channels. Under tensile uniaxial force, the 3D low-density carbon nanotube networks are anisotropic and can be stretched along the direction in which all nanotubes are perpendicular up to 130% of strain without fracture. Also, the porosity and network stiffness can be tuned depending on the amount of carbon nanotubes filling the channels of the zeolites.

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Autonomy in materials research: a case study in carbon nanotube growth

npj Computational Materials ◽

10.1038/npjcompumats.2016.31 ◽

2016 ◽

Vol 2 (1) ◽

Cited By ~ 82

Author(s):

Pavel Nikolaev ◽

Daylond Hooper ◽

Frederick Webber ◽

Rahul Rao ◽

Kevin Decker ◽

...

Keyword(s):

Carbon Nanotube ◽

Materials Research ◽

Carbon Nanotube Growth ◽

Nanotube Growth

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Focused Ion Beam Fabrication of Individual Carbon Nanotube Devices

MRS Proceedings ◽

10.1557/proc-1020-gg08-01 ◽

2007 ◽

Vol 1020 ◽

Author(s):

Lee Chow ◽

Guangyu Chai

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Atomic Force Microscope ◽

Focused Ion Beam ◽

Ion Beam ◽

Side Wall ◽

Multiwall Carbon Nanotube ◽

Atomic Force ◽

Electron Field ◽

Carbon Nanotube Devices

AbstractFocused ion beam (FIB) techniques have found many applications in nanoscience and nanotechnology applications in recent years. However, not much work has been done using FIB to fabricate carbon nanotube devices. This is mainly due to the fact that carbon nanotubes are very fragile and energetic ion beam from FIB can easily damage the carbon nanotubes. Here we report the fabrication of carbon nanotube (CNT) devices, including electron field emitters, atomic force microscope tips, and nano-pores for biomedical applications. This is made possible by a unique, coaxial configuration consisting of a CNT embedded in a graphitic carbon coating, which was developed by us for FIB processing of carbon nanotubes. The CNT-based atomic force microscope tip has been demonstrated. The electron field emission from the tip and the side wall of CNT will be discussed. We will also report the fabrication of a multiwall carbon nanotube nanopore for future applications.

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