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:11/24/2014)... MD (PRWEB) November 24, 2014 ... underrepresented patient populations into clinical trials at its ... , “Continental was created with the idea ... play a fundamental role in medical advances," said ... Tuskegee syphilis experiment to the immortal cell line ...
(Date:11/24/2014)... 2014 Senior Vice President, General ... leadership skills, business acumen Elsevier , ... products and services, congratulates Diane Bartoli , Senior ... Workflow, Elsevier Clinical Solutions, for being recognized in the ... Awards issue of Profiles in Diversity Journal ...
(Date:11/22/2014)... Prominent academics, leaders of the biopharmaceutical ... 3rd at Genetic Rx, a networking conference of ... place at the Joseph B. Martin Conference Center ... present and future of genetic medicines—including siRNA, ASOs, ... well as the treatment of patients with rare ...
(Date:11/22/2014)... (PRWEB) November 22, 2014 The ... Analytical, Preparative), by Material (Metal, Glass, Plastic), by ... TLC, SFC] - Forecast to 2018” analyses and ... challenges in North America, Europe, Asia, and Rest ... tables and 15 figures spread through 135 pages ...
Breaking Biology Technology:At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 2At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 3Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 2Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 3Pioneering Academics and Key Industry Leaders to Discuss Rare Diseases and the Emergence of New Genetic Medicines at Genetic Rx on December 3rd 2Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 2Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 3Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 4Chiral Chromatography Columns Market worth $87.8 Million by 2018 - New Research Report by MarketsandMarkets 5
... announced today that it has developed a new SARS specific ... now in the hands of USAMRIID (US Army Medical Research ... Central Public Health Laboratory (UK) and the British Columbia Center ... SARS genome, EraGen went to work immediately to develop a ...
... first-ever Wisconsin Entrepreneurs Conference in Milwaukee last week, it felt ... they were doing and what they planned to do. , ... plan to rid Lake Erie of the dreaded zebra mussel, ... making it the scourge of the entire Great Lakes region. ...
... - The instant Anca Copaescu, then a second-year MBA in ... 2001 G. Steven Burrill Technology Business Plan Competition, she knew ... winning $10,000 - though the money definitely got her attention. ... to fulfill one of her deepest dreams. "Even as a ...
Cached Biology Technology:EraGen Biosciences Ships SARS Diagnostic Test in Record Time 2Entrepreneurial Spirit Infectious in Milwaukee 2Entrepreneurial Spirit Infectious in Milwaukee 3Romanian Student Leverages Burrill Competition to Accomplish Her Dream 2Romanian Student Leverages Burrill Competition to Accomplish Her Dream 3
(Date:11/4/2014)... published research study examining only marketing directed at ... food restaurants has found that the majority of ... to such marketing tactics. , Authored by Arizona ... the study is the first to examine the ... exterior of fast food restaurants and its relationship ...
(Date:11/4/2014)... Lithuania , Nov. 4, 2014   ... technologies, today announced that the latest version of ... in the Ongoing MINEX evaluation organized ... of fingerprint algorithms using the INCITS 378 fingerprint ... mandatory requirement in public tenders in ...
(Date:11/3/2014)... LOS ANGELES , Nov. 3, 2014 /PRNewswire/ ... California -based life sciences company focused on ... eTNS system for the treatment of neurological ... Institute of Industrial Property has issued a Notice ... The patent application is co-owned by NeuroSigma and ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 2NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 3
... pharmaceutical breakthroughs require 21st-century drug discovery tools, such ... high-throughput screening of effective, new compounds. That,s the ... be held Sept. 11 on "Twenty-first Century Bioscience: ... feature a variety of cutting-edge advances in the ...
... researchers today unveiled a prototype model of the first ... could eliminate the need for dialysis. The device, ... as a bioreactor to mimic the metabolic and water-balancing ... a collaborative effort by engineers, biologists and physicians nationwide, ...
... of Neuropsychopharmacology (ECNP) is pleased to announce Moussa B. ... Lifetime Achievement Award in recognition of his innovative and ... neuropsychiatric drug development. The ECNP Lifetime Achievement Award is ... the field of neuropsychopharmacology. The award is accompanied by ...
Cached Biology News:University at Buffalo symposium on in silico methods, high throughput screening 2University at Buffalo symposium on in silico methods, high throughput screening 3UCSF unveils model for implantable artificial kidney to replace dialysis 2UCSF unveils model for implantable artificial kidney to replace dialysis 3Moussa B.H. Youdim wins the 2010 ECNP Lifetime Achievement Award 2
ExonBio Service provides one-stop recobinant protein shopping from cloning, expression and purification. Price including gene cloning....
TRBP1 Antibody...
Request Info...
Tracker Datamatrix TRxD reads any 1D and 2D barcodes within 0.5 seconds....
Biology Products: