Navigation Links
Spiraling nanotrees offer new twist on growth of nanowires
Date:5/1/2008

MADISON Since scientists first learned to make nanowires, the nano-sized wires just a few millionths of a centimeter thick have taken many forms, including nanobelts, nanocoils and nanoflowers.

But when University of Wisconsin-Madison chemistry professor Song Jin and graduate student Matthew Bierman accidentally made some pine tree shapes one day complete with tall trunks and branches that tapered in length as they spiraled upward they knew theyd stumbled upon something peculiar.

At the beginning we saw just a couple of trees, and we said, What the heck is going on here? recalls Jin. They were so curious.

Writing in the May 1 edition of Science Express, Jin and his team reveal just how curious the nanotrees truly are. In fact, theyre evidence of an entirely different way of growing nanowires, one that promises to give scientists a powerful means to create new and better nanomaterials for all sorts of applications, including high-performance integrated circuits, biosensors, solar cells, LEDs and lasers.

Until now, most nanowires have been made with metal catalysts, which promote the growth of nanomaterials along one dimension to form long rods. While the branches on Jins trees also elongate in this way, growth of the trunks is driven by a screw dislocation, or defect, in their crystal structure. At the top of the trunk, the defect provides a spiral step for atoms to settle on an otherwise perfect crystal face, causing them stack together in a spiral parking ramp-type structure that quickly lengthens the tip.

Dislocations are fundamental to the growth and characteristics of all crystalline materials, but this is the first time theyve been shown to aid the growth of one-dimensional nanostructures. Engineering these defects, says Jin, may not only allow scientists to create more elaborate nanostructures, but also to investigate the fundamental mechanical, thermal and electronic properties of dislocations in materials.'/>"/>

Contact: Song Jin
jin@chem.wisc.edu
608-262-1562
University of Wisconsin-Madison
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Emisphere Technologies, Inc. Announces Pricing of Registered Direct Offering
2. Roche Extends Tender Offer for Ventana
3. ATS Medical Expands Open Pivot Heart Valve Offerings
4. New 200 mg Vial for Eloxatin(R) (Oxaliplatin Injection) Offers Greater Convenience and Efficiency of Preparation
5. Updated NIH Guidelines Offer Valuable Information on Asthma Diagnosis and Management
6. ARYx Therapeutics, Inc. Files Registration Statement for Initial Public Offering
7. Anacor Files Registration Statement for Initial Public Offering
8. NPS Pharmaceuticals Commences Tender Offer for 3.0% Convertible Notes Due 2008
9. Clinsys Clinical Research, Inc. Announces Key Hires, Rajagopalan Srinivasan, Ph.D, to Strengthen Global Biostatistics Service Offering and Christopher Gregory, Ph.D, to Scientific Affairs
10. Schering-Plough Announces Pricing of Senior Notes Offering
11. Exelixis Announces Closing of Public Offering of Common Stock
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/27/2014)... Oct. 27, 2014 Janssen Biotech, Inc. ... (CCFA) announced today the launch of ... an educational campaign designed to provide resources for ... the paired role of nutrition and appropriate therapy ... multimedia assets associated with this release, please click: ...
(Date:10/26/2014)... The report "Data Center Networking Market ... WAN Optimization Appliances]: Global Advancements, Worldwide Forecasts & ... networking market into various segments with an in-depth ... identifies the factors driving this market, various restraints ... the future roadmaps. , Browse 106 market data ...
(Date:10/25/2014)... (PRWEB) October 25, 2014 The ... Type & by Geography - Global Trends & ... market with respect to market drivers, opportunities, and ... data tables and 27 figures spread through 217 ... - Global Trends & Forecast to 2019”., ...
(Date:10/25/2014)... October 23, 2014 BioProcess International ... for the 2014 BioProcess International Awards. The awards ... corporate responsibility and technology applications that will allow ... to a global patient base. , Winners and ... during a very entertaining and exciting awards dinner ...
Breaking Biology Technology:Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 2Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 3Celebrity Cook Sunny Anderson Teams Up With Janssen And Crohn's & Colitis Foundation Of America To Launch Educational Campaign 4Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 2Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 3Data Center Networking Market by Ethernet Switches, SAN & Routers Worth $21.85 Billion by 2018 - New Report by MarketsandMarkets 4Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 2Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 3Adipic Acid Market Estimated to Grow $7,539.2 Million by 2019 - Report by MarketsandMarkets 4BioProcess International Announces Winners of the 2014 BioProcess International Awards 2BioProcess International Announces Winners of the 2014 BioProcess International Awards 3BioProcess International Announces Winners of the 2014 BioProcess International Awards 4BioProcess International Announces Winners of the 2014 BioProcess International Awards 5
... EXTON, Pa., June 2, 2011 Morphotek®, Inc., a ... commenced a multi-center, phase II study of MORAb-004 for ... MORAb-004, a potentially first-in-class monoclonal antibody that specifically binds ... therapy comparing its safety and therapeutic activity at two ...
... a medical explanation for why exercise is good for the ... that started in Dr. Ian Phillips, lab at Keck Graduate ... 29 that keeps hearts healthy even under intense exercise. ... of why exercise is good for you," said Phillips, KGI,s ...
... (NASDAQ: SQNM ), a life sciences company ... its subsidiary Sequenom Center for Molecular Medicine® (Sequenom CMM) ... Valley Bank’s San Diego-based team. Sequenom will use proceeds ... of new products and other near term growth initiatives. ...
Cached Biology Technology:Morphotek®, Inc. Announces Initiation of MORAb-004 Phase II Study in Melanoma 2Morphotek®, Inc. Announces Initiation of MORAb-004 Phase II Study in Melanoma 3Scientists Discover Gene Regulator That Helps Hearts Through Exercise 2Sequenom Enters Into New $30.0 Million Credit Facility 2Sequenom Enters Into New $30.0 Million Credit Facility 3Sequenom Enters Into New $30.0 Million Credit Facility 4
(Date:10/29/2014)... number of chemicals from household and industrial products are ... bodies. But for most of them, scientists have yet ... taken the first step toward doing that by estimating ... new method is published in the ACS journal ... and colleagues note that the risks to human health ...
(Date:10/29/2014)... in German . ... and Peter Schlögelhofer at the Max F. Perutz Laboratories ... University of Vienna dived into the process of meiosis ... display an inversion of the standard meiotic phases. The ... Nature Communications . , Meiosis is the two-step ...
(Date:10/29/2014)... all organisms in the living world compete with ... strongly in how much they invest into their ... eager to get access to high-quality resources, while ... use of the lower-quality resources that are left ... in animal and human societies seems to fluctuate ...
Breaking Biology News(10 mins):Meiotic cell division 'the other way round' 2Evolution of competitiveness 2Evolution of competitiveness 3
... used in California,s Central Valley, one of the world,s ... frog species miles from farmland. Writing in Environmental ... Pacific Tree Fogs in remote mountain areas, including national ... pesticides by the elements. California,s Central Valley is ...
... 25, 2013 The following statement is being issued by Robbins Geller ... Pacific Biosciences Securities Litigation SUPERIOR COURT OF THE ... IN RE PACIFIC BIOSCIENCES OF CALIFORNIA ... CIV509210 SUMMARY NOTICE OF PROPOSED SETTLEMENT OF CLASS ACTION Hon. Marie ...
... researchers have developed a computer-aided method that uses ... rapid advances toward personalized health care, disease management ... V. Chawla and his doctoral student, Darcy A. ... Recommendation Engine (CARE) for personalized disease risk predictions ...
Cached Biology News:Pesticides contaminate frogs from Californian National Parks 2Robbins Geller Rudman & Dowd LLP and Scott+Scott, Attorneys at Law, LLP Announce Proposed Settlement of Class Action in the Pacific Biosciences Securities Litigation 2Robbins Geller Rudman & Dowd LLP and Scott+Scott, Attorneys at Law, LLP Announce Proposed Settlement of Class Action in the Pacific Biosciences Securities Litigation 3Robbins Geller Rudman & Dowd LLP and Scott+Scott, Attorneys at Law, LLP Announce Proposed Settlement of Class Action in the Pacific Biosciences Securities Litigation 4Notre Dame researchers develop system that uses a big data approach to personalized healthcare 2
This antibody detects an ~25 kDa band, corresponding to the expected molecular mass of Rab3A, on immunoblots. The antibody specificity is confirmed in peptide inhibition immunoblotting studies....
... reactive against the complex IV assembly factor SURF1. ... cultured cells. SURF1 is an important assembly factor ... participate in the folding of subunit II and ... SURF1, particularly ones that result in an absence ...
100 g monoclonal antibody which can immunocapture ~10 g of Complex IV from heart mitochondria. Also included are 2 mg of bovine heart mitochondria for control immunocapture....
Rabbit polyclonal to GPR56 ( Abpromise for all tested applications). entrezGeneID: 9289 SwissProtID: Q9Y653...
Biology Products: