نتایج جستجو برای: cntcarbon nano tubes

تعداد نتایج: 77429  

Journal: :Thin-walled Structures 2022

Recently, the mechanical behavior of micro-/nano-structures has sparked an ongoing debate, which leads to a fundamental question: what steps can be taken investigate characteristics these structures, and characterize their performance? From standpoint non-classical materials, size-dependent theories considered analyze behavior. The application classical in investigation small-scale structures l...

Journal: :International Journal of Sustainable Engineering 2021

Nano particles contribute as a partial substitute in the production of eco-friendly building materials. This research presents quantitative assessment sustainability effect partially replacing cement green concrete mix with two types nano-waste particles. The is achieved using weighing criteria developed by Sustainable Decision Support System (SDSS) model. assesses alternatives scoring systems ...

Journal: :The Journal of chemical physics 2014
Tibert H van der Loop Niklas Ottosson Stephan Lotze Emmanuel Kentzinger Thomas Vad Wiebke F C Sager Huib J Bakker Sander Woutersen

We study the reorientation dynamics of liquid water confined in nanometer-sized reverse micelles of spherical and cylindrical shape. The size and shape of the micelles are characterized in detail using small-angle x-ray scattering, and the reorientation dynamics of the water within the micelles is investigated using GHz dielectric relaxation spectroscopy and polarization-resolved infrared pump-...

Journal: :international journal of nanoscience and nanotechnology 2013
r. ahmadi a. khodadadi darban

in this paper, size distribution of nano-bubbles was measured by the reliable and fast method of laserdiffraction technique. nano-bubbles were produced using a nano-bubble generator designed and madebased on hydrodynamic cavitation phenomenon in venturi tubes. a central composite design withresponse surface methodology was used to conduct a five factor, five level factorial experimental designo...

Journal: :gastroenterology and hepatology from bed to bench 0
fariba ghasemvand esmaeil biazar sara tavakolifard mohammad khaledian saeid rahmanzadeh daruosh momenzadeh

aim : the aim of this study is to design multi-walled carbon nanotubes (mwcnts) loaded with paclitaxel (ptx) anti-cancer drug and investigate its anti-cancerous efficacy of human gastric cancer. the sidewall surfaces of pristine mwcnts are highly hydrophobic. a major goal in carbon nanotube chemistry has been functionalization for aqueous solubility, and exploiting nano-tubes as macromolecules ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1388

در این رساله، طراحی، اجراء و مدلسازی فرآیند nano-edm مورد بررسی و تحقیق قرار گرفت. به منظور تولید نانو- ابزار مناسب برای فرآیند nano-edm یک دستگاه اتوماتیک طراحی و ساخته شد که با استفاده از آن، تاثیر متغیرهای فرآیند ساخت بر خصوصیات نانو- ابزار مورد تحقیق قرار گرفت. با شناسایی سطوح بهینه متغیرهای فرآیند ساخت به روش تاگوچی، نانو- ابزارهایی با شعاع نوک حدود 10 نانومتر و ضریب جانبی (نسبت طول به شعا...

2013
E. N. Ganesh

Carbon Nanotubes have exceptional mechanical and electrical properties. Various methods have been thoroughly investigated for the growth of CNTs. The best and the most commonly used method is Chemical Vapour Deposition (CVD). The various techniques include Reaction Chamber heating, Plasma Enhanced CVD, Hot filament CVD, Microwave CVD. The structural uniformity of carbon nanotubes produced by pl...

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