Navigation Links
Accidental nanoparticle discovery could hail revolution in manufacturing
Date:9/9/2013

A nanoparticle shaped like a spiky ball, with magnetic properties, has been uncovered in a new method of synthesising carbon nanotubes by physicists at Queen Mary University of London and the University of Kent.

Carbon nanotubes are hollow, cylindrical molecules that can be manipulated to give them useful properties. The nanoparticles were discovered accidentally on the rough surfaces of a reactor designed to grow carbon nanotubes.

Described as sea urchins because of their characteristic spiny appearance, the particles consist of nanotubes filled with iron, with equal lengths pointing outwards in all directions from a central particle.

The presence of iron and the unusual nanoparticle shape could have potential for a number of applications, such as batteries that can be charged from waste heat, mixing with polymers to make permanent magnets, or as particles for cancer therapies that use heat to kill cancerous cells.

The researchers found that the rough surfaces of the reactor were covered in a thick powder of the new nanoparticles and that intentional roughening of the surfaces produced large quantities of the sea urchin nanoparticles.

"The surprising conclusion is that the sea urchin nanoparticles grow in vapour by a mechanism that's similar to snowflake formation. Just as moist air flowing over a mountain range produces turbulence which results in a snowfall, the rough surface disrupts a flow to produce a symmetrical and ordered nanoparticle out of chaotic conditions," said Dr Mark Baxendale from Queen Mary's School of Physics and Astronomy.

On analysis, the researchers found that a small fraction of the iron inside the carbon nanotubes was a particular type usually only found in high temperature and pressure conditions.

Dr Baxendale added: "We were surprised to see this rare kind of iron inside the nanotubes. While we don't know much about its behaviour, we can see that the presence of this small fraction of iron greatly influences the magnetic properties of the nanoparticle."


'/>"/>

Contact: Neha Okhandiar
n.okhandiar@qmul.ac.uk
020-788-27927
Queen Mary, University of London
Source:Eurekalert

Related biology technology :

1. Marshall study shows nanoparticles used as additives in diesel fuels can travel from lungs to liver
2. Nanoparticle electrode for batteries could make grid-scale power storage feasible
3. Metal nanoparticles shine with customizable color
4. New measuring techniques can improve efficiency, safety of nanoparticles
5. New technique uses electrons to map nanoparticle atomic structures
6. Light touch keeps a grip on delicate nanoparticles
7. A milestone in nanoparticle research: Nanoparticle test handbook sets the standards
8. Nanoparticles seen as artificial atoms
9. Nanoparticles found in moon glass bubbles explain weird lunar soil behavior
10. Study improves understanding of surface molecules in controlling size of gold nanoparticles
11. Gold nanoparticles could treat prostate cancer with fewer side effects than chemotherapy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/15/2017)... Wisconsin (PRWEB) , ... August 15, 2017 , ... ... a new family of 6” modular downlights designed to stay tightly sealed and ... including areas where damp and wet location listings just aren't enough, such as: ...
(Date:8/14/2017)... ... August 14, 2017 , ... ... interconnect using USB or PCI Express, announced the release of SYZYGY™, a new ... to satisfy the need for a compact, low cost, low pin-count, high-performance connectivity ...
(Date:8/11/2017)... ... August 11, 2017 , ... “There is ... more natural alternatives to synthetic ingredients,” said Matt Hundt, President of Third Wave ... established manufacturing presence and know-how of Biorigin will allow us to bring truly ...
(Date:8/10/2017)... (PRWEB) , ... August 09, 2017 , ... Okyanos Center ... take place at the Pelican Bay Hotel in Freeport, Grand Bahama on September 27, ... is required. , With oversight from the Ministry of Health’s National Stem Cell ...
Breaking Biology Technology:
(Date:3/28/2017)... -- The report "Video Surveillance Market by ... Devices), Software (Video Analytics, VMS), and Service (VSaaS, Installation ... 2022", published by MarketsandMarkets, the market was valued at ... reach USD 75.64 Billion by 2022, at a CAGR ... considered for the study is 2016 and the forecast ...
(Date:3/24/2017)... Research and Markets has announced the addition of the "Global ... to 2025" report to their offering. ... The Global Biometric Vehicle Access System Market ... the next decade to reach approximately $1,580 million by 2025. ... for all the given segments on global as well as regional ...
(Date:3/22/2017)... 21, 2017   Neurotechnology , a provider ... today announced the release of the SentiVeillance ... improved facial recognition using up to 10 surveillance, ... computer. The new version uses deep neural-network-based facial ... it utilizes a Graphing Processing Unit (GPU) for ...
Breaking Biology News(10 mins):