نتایج جستجو برای: carbon nano tube

تعداد نتایج: 420571  

2014
Wei Qin Maogang Gong Tejas Shastry Mark C. Hersam Shenqiang Ren

Room temperature magnetic field effects have not been definitively observed in either single-walled carbon nanotubes (SWCNTs) or C₆₀ under a small magnetic field due to their weak hyperfine interaction and slight difference of g-factor between positive and negative polarons. Here, we demonstrate charge-transfer induced magnetic field effects in nano-carbon C₆₀-SWCNT bulk heterojunctions at room...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
y. bakhshan a. hajhosseini

in this study, thermal performance of a cylindrical heat pipe is investigated numerically. three different types of water based nanofluids, namely (al2o3+water), (diamond+water) and (multi-wall carbon nano tube (mwcnt) +water) have been used. the influence of using the simple nanofluids and mwcnt nanofluid on the heat pipe characteristics such as liquid velocity, pressure profile, temperature p...

Journal: :Journal of modern nanotechnology 2021

Objective The widespread use of carbon nanotube-fabricated electromechanical systems has resulted in new operating scenarios for these structures, such as the presence an external magnetic field. Also, rippling can significantly impact performance nanotube-based actuators. These critical phenomena, however, are frequently overlooked theoretical beam models. This paper simulates electromagnetic ...

Journal: :Materiali in Tehnologije 2021

A novel nano-scale pump that can transport atoms or small molecules with a peristaltic motion is designed. It proven by molecular-dynamics simulations the introduced nano-pump design works properly. The designed consists of one main carbon nanotube named flow tube and two rotors where multi-walled nanotubes are attached. pumping helium investigated simulations. For varying rotor speeds blade co...

2016
Kulkarni

The aim of this research work is focused on optimization of process parameters under Minimum Quantity Lubrication (MQL) using nano fluid in turning of AISI 4340. A study of effect of process parameters in turning of AISI 4340 under MQL condition with nano fluid (Multiwalled Carbon Nano Tube) on the cutting force generated and machined surface roughness is carried out. In the experiment conducte...

2017
Khadijeh Hemmati Esmaiel Saievar-Iranizad Amir Bayat

In this study, carbon nano-micro spheres with tightly controllable size, regular and perfect shape, high yields and narrow size distribution were prepared simply from glucose and DI water as precursors using a hydrothermal method. By setting the initial concentration of glucose solution and changing the hydrothermal process time at a constant temperature of 160 °C, carbon spheres with various s...

Afsari, A. , Rabiezadeh, A. ,

The purpose of this study was to examine the effect of adding Nano particles such as Nano Carbon Tube during Friction Stir Welding (FSW) on dissimilar Al alloy joints. More specifically, both FSW and Friction Stir Processing (FSP) were performed simultaneously to investigate the effect of adding Nano particles on mechanical properties and microstructure of the weld zone for joining AA5754-H22 a...

2005
P.V.M. Rao Manvinder Singh Vijay Jain

Gears, Bearings, Springs, Fasteners etc. are some of the typical machine elements used to build machines and mechanical systems. The function of these machine elements is to transmit motion, to support moving members, to store energy, to join two components etc. Carbon nanotubes can be used as these machine elements when building nano-machines or nano-mechanical systems. In this paper we review...

2009
Joon S. Shim Yeo-Heung Yun Wondong Cho Vesselin Shanov Mark J. Schulz Chong H. Ahn

A self aligned nano scale gap between multiple metal layers has been fabricated using a newly developed technique of controlled undercut and metallization (CUM), and applied for the assembly of an individual carbon nanotube (CNT). The new method enables conventional optical lithography to fabricate nano-gap electrodes and self aligned patterns with nano scale precision. Individual CNTs were ass...

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