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:7/29/2014)... The prestigious "Discovery or Exploration in History Award" ... Juliana Hillis and Kaylie O’Connell, students at Stoneham High ... Egg, Everything: America’s First IVF Baby". This project was ... History Day program during a week-long final competition judged ... D.C. , The growing popularity of the assisted reproductive ...
(Date:7/29/2014)... CA (PRWEB) July 29, 2014 ... medical devices, and cloud based eClinical technologies, have been ... Device Online. These follow a long line of white ... profile publications including Life Science Leader, Pharmaceutical Online, and ... Clinovo provided a paper by CTO Marc Desgrousilliers, ...
(Date:7/29/2014)... 2014 PlaqueTec ... Erfassung biologischer Daten in Verbindung mit Herzerkrankungen ... Das LBS nimmt gleichzeitig mehrere Blutproben von ... und sucht erhöhte biologische Aktivitäten in erkrankten ... Entdeckung und Entwicklung neuer Medikamente und Therapeutika ...
(Date:7/28/2014)... Sapphire Energy, Inc. , a global ... of biotechnology veteran James Levine as president, ... replaces Cynthia ,CJ, Warner, who is stepping down from ... the company,s board of directors. "The impact ... commercial scale algae-based fuels has been tremendous, from overseeing ...
Breaking Biology Technology:In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 3Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 2PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 4Sapphire Energy Announces New CEO James Levine 2Sapphire Energy Announces New CEO James Levine 3
... Auxilium Pharmaceuticals, Inc. (NASDAQ: AUXL ), a specialty ... on Monday, May 9, 2011 before the opening of the ... call that day at 10:00 a.m. ET to discuss results ... to be used during the call will be available on ...
... or Encyclopedia Of DNA Elements project, has created an overview ... sequence. The April 19 publication of "A ... the journal PLoS Biology provides a guide for using the ... by the project. All of the data, tools to ...
... 21, 2011 Cord Blood America, Inc . ( ... umbilical cord blood stem cell preservation company focused ... families nationwide and internationally, is pleased to announce that its ... Incorporation effecting a reverse stock split. The vote ...
Cached Biology Technology:Auxilium Pharmaceuticals to Announce First Quarter 2011 Results and Conduct Conference Call on Monday, May 9, 2011 2Auxilium Pharmaceuticals to Announce First Quarter 2011 Results and Conduct Conference Call on Monday, May 9, 2011 3A user's guide to the encyclopedia of DNA elements 2Cord Blood America: Shareholders Approve Common Stock Reverse Split 2
(Date:7/28/2014)... Roald Amundsen reached the South Pole in 1911, but ... before any human. , Using data from 16 ice ... continent, including the South Pole, a group led by ... Reno, Nevada, created the most accurate and precise reconstruction ... The new record, described in an article published today ...
(Date:7/28/2014)... of people in the United States have a circulatory ... can be painful and may even require surgery in ... muscle wasting and, in turn, limb amputation. , At ... (UTHealth) Medical School, scientists tested a non-surgical preventative treatment ... was associated with increased blood circulation. Their proof-of-concept ...
(Date:7/28/2014)... -- Fifteen years ago, MIT professor John Essigmann and colleagues ... an HIV drug. They thought if they could induce the ... and eventually die out a strategy that our immune ... such a drug, which caused HIV to mutate at an ... virus from patients in a small clinical trial reported in ...
Breaking Biology News(10 mins):Lead pollution beat explorers to South Pole, persists today 2Lead pollution beat explorers to South Pole, persists today 3Scientists discover genetic switch that can prevent peripheral vascular disease in mice 2Forced mutations doom HIV 2Forced mutations doom HIV 3Forced mutations doom HIV 4
... Slugs are every gardener,s enemy: They can destroy overnight, ... don,t like all plants in the same way they ... posed by the botanist and founder of Chemical Ecology, Ernst ... More than a hundred years later chemists from Friedrich-Schiller-University Jena ...
... hands and arms through innovative robotic and virtual reality-based video ... Sergei Adamovich, a biomedical engineer. Thanks to a ... Adamovich is developing better ways to rehabilitate people who have ... Preliminary laboratory results appear promising: ...
... 2010) Acidity is increasing in some regions of the ... ocean, where it is now recognized that increased levels of ... more acidic. These more acidic conditions in key parts of ... to new research published in the journal Estuaries and ...
Cached Biology News:Self-defense strategies of moss 2NJIT engineer helps stroke patients regain motor functions in hands, arms 2Changing Chesapeake Bay acidity impacting oyster shell growth 2Changing Chesapeake Bay acidity impacting oyster shell growth 3
Prepared in distilled water....
... RiboGreen RNA Quantitation Kit is one ... for the quantitation of RNA in ... 1000-fold more sensitive than absorbance measurements. ... be detected with fluorescence microplate readers ...
Request Info...
Recommend to use at up to 5000X dilutions for cell culture (e.g. Add 1 ul to 1 ml of culture medium.)...
Biology Products: