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:11/26/2014)... 2014 Miles Holder, formerly of Micron ... Carbon Products team as Sales/Marketing Manager. Mr. Holder has ... service for the graphite industry. , “We are thrilled ... stated Dave Trinkley, VP of Market and Product Development ... experience in the graphite industry, along with his proven ...
(Date:11/26/2014)... WILMINGTON, DE (PRWEB) November 26, 2014 ... MPN Heroes recognition reception on December 5, 2014, in ... annual meeting. The MPN Heroes event will honor clinicians, ... the field of myeloproliferative neoplasms (MPNs). , Special ... will discuss his family's cancer journey at the reception. ...
(Date:11/26/2014)... 25 novembre 2014 Theravalues Corporation est fier ... marché européen au salon Hi Europe 2014 (du ... ). Curcumine la plus biodisponible actuellement ... (non-cristalline) à des ingrédients approuvés par les règlements ... jaune présent dans la racine de curcuma ( ...
(Date:11/26/2014)... TOKYO , 25 novembre 2014 /PRNewswrie/ -- Theravalues ... per il mercato europeo in occasione di Hi Europe ... ). Si tratta della curcumina con ... tecnologia amorfa (senza cristalli) e ingredienti approvati dalle norme ... presente nella spezia della pianta curcumina ( Curcuma longa ...
Breaking Biology Technology:Miles Holder Joins Graphel Corporation as Sales/Marketing Manager 2CURE Magazine and Incyte to Honor MPN Heroes 2CURE Magazine and Incyte to Honor MPN Heroes 3CURE Magazine and Incyte to Honor MPN Heroes 4La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 2La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 3La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 2La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 3
... , CHICAGO and HOBOKEN, N.J. , Aug. 2 ... of the Octapharma 25th Anniversary Grants Program is the Rush ... Octapharma grants program supports clinical or pre-clinical research focused on human protein therapies ... , , ...
... August 2, 2010 INEOS Group has,today entered into a ... one of the world,s leading providers of research led,packaging to the global ... capabilities and,synergy,s of two leading global businesses. , ... INEOS Films is ...
... of the most fundamental processes in physics. Whether a ... summer due to the absorption of light quanta or ... diodes that convert electricity into light, we encounter the ... the interactions between individual light particles photons ...
Cached Biology Technology:Octapharma Grants Program Awards First Research Grant to Rush University Medical Center 2Octapharma Grants Program Awards First Research Grant to Rush University Medical Center 3Octapharma Grants Program Awards First Research Grant to Rush University Medical Center 4Octapharma Grants Program Awards First Research Grant to Rush University Medical Center 5Octapharma Grants Program Awards First Research Grant to Rush University Medical Center 6Bilcare AG to Acquire INEOS' Global Films Business for EUR100 Million 2Bilcare AG to Acquire INEOS' Global Films Business for EUR100 Million 3One more step on the path to quantum computers 2
(Date:11/3/2014)... Research and Markets has announced the addition of a ... to their offering. This report describes ... started to play an important role in the practice of ... bone marrow transplants. Role of cells in drug discovery is ... of medical practice. Stem cells are discussed in ...
(Date:11/3/2014)... birth weight and preterm birth are linked to increased ... published in the American College of Rheumatology (ACR) journal, ... birth weight and pre-term babies were not at greater ... , According to the ACR, 27 million Americans ... OA. Symptoms of OA range from mild to severe ...
(Date:11/2/2014)... was fascinating to put a flashlight up to our ... Washington University in St. Louis engineers are using a ... to improve imaging of cancerous tissues and to develop ... K. Beare Distinguished Professor of Biomedical Engineering at the ... novel time-reversal technology that allows researchers to better focus ...
Breaking Biology News(10 mins):Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3Preterm, low birth-weight babies may need new hips in adulthood 2Improving imaging of cancerous tissues by reversing time 2
... Brandeis researchers, whose long-standing collaboration led to pioneering ... and its role in circadian rhythms, today were ... foremost international scientific honor. Michael Rosbash, the ... director of the Brandeis, National Center for Behavioral ...
... and Shenzhen, China - To facilitate the genomics ... genomics organization, University of Helsinki and Wuhan University, ... of Understanding (MOU) setting forth a framework for ... of genomics, such as archaeal organisms from hypersaline ...
... Each year the American Society of Plant Biologists (ASPB) ... a competitive process to attend the Plant Biology Annual ... Travel Award (WYITA) program is to increase attendance of ... independent scientist in academia, industry, or government at the ...
Cached Biology News:Brandeis scientists win prestigious prize for circadian rhythms research 2Brandeis scientists win prestigious prize for circadian rhythms research 3Brandeis scientists win prestigious prize for circadian rhythms research 4American Society of Plant Biologists honors early career women scientists 2
Form: Ready to use Applications: Western Blot, ELISA...
... Bench-Top Open System Chemistry Analyzer for General Chemistries, Specialty Chemistries, QC, Reagent Development, Pharmaceutical ... grating, diode spectrophotometer over 30 user-selectable wavelengths. ... ... ...
2,4,6, Trinitrophenyl hapten is conjugated to lipopolysaccharide (LPS)....
... the Flp-In System creates isogenic cell ... levels of the protein of interest. ... Figure 3 (click link below). In ... chloramphenicol-acetyl transferase (CAT) was subcloned into ...
Biology Products: