Navigation Links
Penn study: Transforming nanowires into nano-tools using cation exchange reactions
Date:10/23/2009

PHILADELPHIA - A team of engineers from the University of Pennsylvania has transformed simple nanowires into reconfigurable materials and circuits, demonstrating a novel, self-assembling method for chemically creating nanoscale structures that are not possible to grow or obtain otherwise.

The research team, using only chemical reactants, transformed semiconducting nanowires into a variety of useful, nanoscale materials including nanoscale metal strips with periodic stripes and semiconducting patterns, purely metallic nanowires, radial heterostructures and hollow semiconducting nanotubes in addition to other morphologies and compositions.

Researchers used ion exchange, one of the two most common techniques for solid phase transformation of nanostructures. Ion (cation/anion) exchange reactions exchange positive or negative ions and have been used to modify the chemical composition of inorganic nanocrystals, as well as create semiconductor superlattice structures. It is the chemical process, for example, that turns hard water soft in many American households.

Future applications of nanomaterials in electronics, catalysis, photonics and bionanotechnology are driving the exploration of synthetic approaches to control and manipulate the chemical composition, structure and morphology of these materials. To realize their full potential, it is desirable to develop techniques that can transform nanowires into tunable but precisely controlled morphologies, especially in the gas-phase, to be compatible with nanowire growth schemes. The assembly, however, is an expensive and labor-intensive process that prohibits cost-effective production of these materials.

Recent research in the field has enabled the transformation of nanomaterials via solid-phase chemical reactions into nonequilibrium, or functional structures that cannot be obtained otherwise.

In this study, researchers transformed single-crystalline cadmium sulfide nanow
'/>"/>

Contact: Jordan Reese
jreese@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Kline Study: Better Brushing Habits Boost European Oral Care Sales
2. SkyeTek to Present Webinar on Transforming the Management of Medical Devices & Supplies with Embedded RFID
3. Excalibur - Transforming Biotech Deals can Still be Achieved
4. Transforming medical diagnosis with new scanning technology
5. Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study
6. High Q NIST nanowires may be practical oscillators
7. Chemists measure copper levels in zinc oxide nanowires
8. Carbon nanotubes outperform copper nanowires as interconnects
9. Engineers make first active matrix display using nanowires
10. Spiraling nanotrees offer new twist on growth of nanowires
11. Nanowires may boost solar cell efficiency, UC San Diego engineers say
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Penn study: Transforming nanowires into nano-tools using cation exchange reactions
(Date:1/15/2014)... Calif. (PRWEB) January 15, 2014 Cynvenio, ... and management through the genomic analysis of tumor cells ... Therapy Finder™, a web-based cancer decision support application powered ... option with Cynvenio’s ClearID™ genomic test, Therapy Finder will ...
(Date:1/15/2014)... This webinar will focus on EMA ... assessment in biosimilars. , Regulatory frameworks are evolving many ... however the complex nature of biopharmaceuticals makes the demonstration ... extremely challenging. Based on the specific aspects of biosimilar ...
(Date:1/15/2014)... Reston, VA (PRWEB) January 15, 2014 ... education have continued their sponsorship of an annual competition ... interest in, and access to, innovative STEM study. The ... , TEAMS: Tests of Engineering Aptitude, Mathematics, and ...
(Date:1/15/2014)... January 15, 2014 2013 was a ... Brain State Technologies®. They saw continued independent research led ... who were awarded a $1 million grant from the ... “Brain and Behavior” a peer reviewed journal, Amy Grant ...
Breaking Biology Technology:Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3
... ... volumes of research records. , ... Reston, VA (PRWEB) January 28, 2010 -- Surety, LLC , the ... drug discovery and development company, has selected Surety,s AbsoluteProof® trusted, digital timestamping service for ...
... ... , , ... Custom Data, the underlying source of Scopus.com, the world,s,largest abstract and citation ... analysis between scientific,articles and patents. JST, as the funding agency for promoting ...
... , , , , , , , , ... Biotech Ltd. ( SVA),("Sinovac" or the "Company"), a leading China ... of 10,000,000 common,shares at $5.75 per common share. ... to an additional 1,500,000 common,shares on the same terms and conditions. ...
Cached Biology Technology:Biotech Company Ansaris Selects Surety for Integrity and Authenticity Protection of Its Lab Informatics Data 2Biotech Company Ansaris Selects Surety for Integrity and Authenticity Protection of Its Lab Informatics Data 3Biotech Company Ansaris Selects Surety for Integrity and Authenticity Protection of Its Lab Informatics Data 4Japan Science and Technology Agency (JST) Selects Scopus Custom Data for Citation Linkage Analysis Between Scientific Articles and Patents 2Japan Science and Technology Agency (JST) Selects Scopus Custom Data for Citation Linkage Analysis Between Scientific Articles and Patents 3Japan Science and Technology Agency (JST) Selects Scopus Custom Data for Citation Linkage Analysis Between Scientific Articles and Patents 4Japan Science and Technology Agency (JST) Selects Scopus Custom Data for Citation Linkage Analysis Between Scientific Articles and Patents 5Japan Science and Technology Agency (JST) Selects Scopus Custom Data for Citation Linkage Analysis Between Scientific Articles and Patents 6Sinovac Announces Upsizing and Pricing of Common Share Offering 2Sinovac Announces Upsizing and Pricing of Common Share Offering 3
(Date:7/9/2014)... Bacterial infections usually announce themselves with pain and fever but ... are those that are sneaky and hard to beat. Now, ... the form of tiny DNA pyramids. Published in the journal ... the nanopyramids can flag bacteria and kill more of them ... note that some infectious pathogens can lie in wait, undetectable ...
(Date:7/9/2014)... the amphibians with the highest distribution in the Iberian ... where it comes into contact with the red swamp ... by the Spaniard Germn Orizaola from the University of ... have developed a defensive response to the invasive species. ... they co-exist with the crayfish. , Numerous invasive organisms ...
(Date:7/9/2014)... N-methyl-D-aspartate receptor antagonists can alleviate the symptoms ... irreversible cognitive dysfunction and effectively scavenge amyloid ... peptide (Aβ) vaccines reduced and eliminated Aβ ... mouse model, and significantly improved behavioral and ... team, First Affiliated Hospital of China Medical ...
Breaking Biology News(10 mins):Frogs have developed rapid defences against the red swamp crayfish 2Frogs have developed rapid defences against the red swamp crayfish 3
... 2011) Proving that technological entrepreneurship can have ... fields, renowned innovator, materials scientist and applied physicist ... recipient of the 2011 $500,000 Lemelson-MIT Prize. Rogers, ... products integral to human health, fiber optics, semiconductor ...
... A new study provides support for Darwin,s hypothesis ... more closely related species than those distantly related. ... study contains the strongest direct experimental evidence yet ... species extinction occurred more frequently and more rapidly ...
... rapidly spreading amphibian disease, has reached a site near ... the entire mountainous neotropics to be free of the ... Rescue and Conservation Project, a consortium of nine U.S. ... of frogs in imminent danger of extinction. ...
Cached Biology News:Materials scientist and entrepreneur Dr. John Rogers awarded $500,000 Lemelson-MIT Prize 2Materials scientist and entrepreneur Dr. John Rogers awarded $500,000 Lemelson-MIT Prize 3Materials scientist and entrepreneur Dr. John Rogers awarded $500,000 Lemelson-MIT Prize 4New study supports Darwin's hypothesis on competition between species 2New study supports Darwin's hypothesis on competition between species 3Scientists find deadly amphibian disease in the last disease-free region of central America 2Scientists find deadly amphibian disease in the last disease-free region of central America 3
Collected from 8-12 week-old New Zealand or Californian rabbits.,Supplied in lyophilized form....
Antibody specific for phosphorylattion of histone H3 that occurs during mitosis. Rabbit polyclonal serum. Antigen: Synthetic peptides derived from histone H3, phosphorylated at serines 10 or 28...
5 minutes from gel band to purified DNA...
...
Biology Products: