Navigation Links
Chemists measure copper levels in zinc oxide nanowires
Date:2/19/2008

Chemists at the National Institute of Standards and Technology (NIST) have been the first to measure significant amounts of copper incorporated into zinc oxide (ZnO) nanowires during fabrication. The issue is important because copper plays a significantbut not well-understoodrole in important optical and electrical properties of the nanowires. Previous experiments found only trace amounts of copper.

Although zinc oxide is best known as a strong sunblock, cold remedy, itch reliever and paint pigment, nanotech engineers like it for its photoluminescence (the ability to emit light after absorbing electromagnetic radiation), field emission (the basis for advanced, high-definition flat-panel displays) and piezoelectric properties (stressing or changing shape when electricity is applied and producing electricity when stressed). ZnO nanomaterials may one day be used to improve solar cells, lasers, sensors, ultraviolet light sources, field emission sources and piezoelectric devices.

Copper enters the ZnO nanowires during fabrication. The nanowiresabout 50 to 150 nanometers wide and up to 40 micrometers longare grown on a copper substrate using a chemical vapor deposition process. The copper substrate forms droplets that absorb the zinc and oxygen vapors and deposits the ZnO on the substrate. As the nanowire grows, the zinc pushes the droplets up from the surface, but some copper remains inside the nanowires crystal lattice.

In a new paper,* NIST chemists report using a variety of measurement techniques to learn that the ZnO wires contain a surprising amount of copperbetween 5 and 15 percent. High-resolution imaging studies of ZnO nanowires reveal that the copper manages to fit into zinc oxides regular crystalline structure without disrupting it. It is in there somewhere, explains chemist Susie Eustis. Because the copper can be easily detected when you know what to look for, she says, researchers plan to use it to better unde
'/>"/>

Contact: Evelyn Brown
evelyn.brown@nist.gov
301-975-5661
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. APIC Statement on Need for Increased Prevention Measures for Healthcare-Associated Infections (HAIs)
2. SoluLinK Introduces ChromaLink(TM) Biotin Labeling Kit to Biotinylate and Measure With One Reagent
3. Pathway Diagnostics Announces Patent Issuance for the Diagnostic Measurement of HIV Tropism for the Initiation or Modification of HIV Therapy
4. Researchers measure carbon nanotube interaction
5. New force-fluorescence device measures motion previously undetectable
6. Phase 1 Studies Show Promise of QuatRxs Novel Compound, Sobetirome, for Lowering LDL Cholesterol Levels
7. House and Senate Pass Medicare Legislation to Freeze 2008 Reimbursement for Therapeutic Radiopharmaceuticals at 2007 Levels
8. The International Diabetes Federation (IDF) Recommends Tighter Control of Blood Glucose Levels After Meals in People With Diabetes
9. National Association of Emergency Medical Technicians (NAEMT) Supports Prehospital Screening for Carbon Monoxide in the Blood
10. International Association of Fire Fighters (IAFF) Advocates Screening Fire Fighters for Carbon Monoxide Poisoning Using Pulse CO-Oximetry
11. High Q NIST nanowires may be practical oscillators
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Chemists measure copper levels in zinc oxide nanowires
(Date:7/30/2015)... ... ... part of its 2015 growth plan and as a follow up to the recently announced ... Laboratories is pleased to announce that it has begun construction on a new Microbiological Laboratory. ... be strictly dedicated to basic USP 51, USP 61, and USP 62 testing specific to ...
(Date:7/29/2015)... PARIS , July 30, 2015 ... leader, reports results for the second quarter of ... the group,s results and its performance in different ... transcript:  http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire ... - Q2 results - Performance drivers ...
(Date:7/29/2015)... , July 30, 2015 According ... Market - Growth, Trends & Forecasts (2015-2020), , published by ... US$ 30.25 billion by the end of 2020, with ... accounting for more than 40% of the global market size. ... at a CAGR of 13.7% during the period of (2015-2020). ...
(Date:7/29/2015)... / Japan (Q2 2015: +14% CER / 20% of ... growth in China , as well as solid contributions from ... Europe / Middle East / ... gains in Germany , Turkey and ... / 49% of sales) grew 11%, excluding U.S. HPV sales, on demand across ...
Breaking Biology Technology:Whitehouse Labs Formally Announces Plans to Open a Microbiological Laboratory 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10
... Avantium announced today the,successful completion of ... Avantium,is active in the development and commercialization ... and the improvement of,pharmaceutical products. The financing ... development programs. The focus of the next-generation ...
... and DUBLIN, Ireland, Oct. 29 ,Shire plc (LSE: SHP, Nasdaq: SHPGY) ... September 30, 2008., Q3 2008 Financial Highlights, - ... excluding ADDERALL XR(R) up 51% to $444 million - New ... 22%) - Total revenues up 28% to $779 million ...
... Oct. 29 /Xinhua-PRNewswire/ -- Sinovac Biotech Ltd. (Amex:,SVA), ... that it,is scheduled to present at two upcoming ... in New York City and the,Credit Suisse Asian ... Wu, Senior Financial Manager, is scheduled to present ...
Cached Biology Technology:Avantium Completes EUR 18 Million Financing Round 2Avantium Completes EUR 18 Million Financing Round 3Avantium Completes EUR 18 Million Financing Round 4Shire's New Product Portfolio Delivers Strong Quarterly Performance 2Shire's New Product Portfolio Delivers Strong Quarterly Performance 3Shire's New Product Portfolio Delivers Strong Quarterly Performance 4Shire's New Product Portfolio Delivers Strong Quarterly Performance 5Shire's New Product Portfolio Delivers Strong Quarterly Performance 6Shire's New Product Portfolio Delivers Strong Quarterly Performance 7Shire's New Product Portfolio Delivers Strong Quarterly Performance 8Shire's New Product Portfolio Delivers Strong Quarterly Performance 9Shire's New Product Portfolio Delivers Strong Quarterly Performance 10Shire's New Product Portfolio Delivers Strong Quarterly Performance 11Shire's New Product Portfolio Delivers Strong Quarterly Performance 12Shire's New Product Portfolio Delivers Strong Quarterly Performance 13Shire's New Product Portfolio Delivers Strong Quarterly Performance 14Shire's New Product Portfolio Delivers Strong Quarterly Performance 15Shire's New Product Portfolio Delivers Strong Quarterly Performance 16Shire's New Product Portfolio Delivers Strong Quarterly Performance 17Shire's New Product Portfolio Delivers Strong Quarterly Performance 18Shire's New Product Portfolio Delivers Strong Quarterly Performance 19Shire's New Product Portfolio Delivers Strong Quarterly Performance 20Shire's New Product Portfolio Delivers Strong Quarterly Performance 21Shire's New Product Portfolio Delivers Strong Quarterly Performance 22Shire's New Product Portfolio Delivers Strong Quarterly Performance 23Shire's New Product Portfolio Delivers Strong Quarterly Performance 24Shire's New Product Portfolio Delivers Strong Quarterly Performance 25Shire's New Product Portfolio Delivers Strong Quarterly Performance 26Shire's New Product Portfolio Delivers Strong Quarterly Performance 27Shire's New Product Portfolio Delivers Strong Quarterly Performance 28Shire's New Product Portfolio Delivers Strong Quarterly Performance 29Shire's New Product Portfolio Delivers Strong Quarterly Performance 30Shire's New Product Portfolio Delivers Strong Quarterly Performance 31Shire's New Product Portfolio Delivers Strong Quarterly Performance 32Shire's New Product Portfolio Delivers Strong Quarterly Performance 33
(Date:7/23/2015)... , July 23, 2015 Research and ... of the "Global Outlook of the Biometrics ... The global biometrics market is ... and commercial applications owing to the uptake of ... a transformation that enhances the growth of biometrics ...
(Date:7/13/2015)... , July 13, 2015 Synaptics Inc. ... human interface solutions, today announced sampling of ClearPad ... display driver integration (TDDI) product targeting smartphones and ... to combine Synaptics , best-in-class touch controller ... driver technology developed in the company,s Japan Design ...
(Date:7/9/2015)... 9, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced a new Match-in-Sensor™ ... hardware encapsulated fingerprint sensor and matching solution. ... literally off the grid, isolating fingerprint image ... the fingerprint sensor to provide ultimate protection ...
Breaking Biology News(10 mins):Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 3
... 2012   Reportlinker.com announces that a new ... catalogue: Biometrics Market in ... TechNavio,s analysts forecast the Biometrics ... CAGR of 42.4 percent over the period ...
... important step in making artificial life forms from scratch. ... cell membranes, the structural envelopes that contain and support ... professor of chemistry at the University of California, San ... University, report their success in the Journal of ...
... PA, January 25, 2011 Elsevier, a world-leading provider of ... Academy of Nutrition and Dietetics announce that the Journal ... Journal of the Academy of Nutrition and Dietetics , mirroring ... it is published. "The new name, the Academy ...
Cached Biology News:Biometrics Market in India 2010 - 2014 2Chemists synthesize artificial cell membrane 2Journal of American Dietetic Association becomes Journal of the Academy of Nutrition and Dietetics 2
BD IMag Anti-Mouse CD90.2 (Thy1.2) Particles-DM 2 x 109 cells...
...
...
... III) from E. coli is an endoribonuclease ... dsRNA fragments that have 2-base, 3'-overhangs. ... fragments of 12-15 bp. RNase III ... ribonucleotides as well as DuraScript™ RNA, produced ...
Biology Products: