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:1/22/2015)... 2015 Eckert & Ziegler Vitalea Science ... services to the pharmaceutical and biotech industry, has announced ... in the position of Director of Science & Technology. ... valuable experience in drug metabolism and bioanalysis to EZVS ...
(Date:1/22/2015)... , Jan. 22, 2015  Transwestern | RBJ today announces ... of office space for Shire a leading biopharmaceutical company, at ... Transwestern | RBJ,s Robert Richards , president, and ... lease for the entire five-floor building at 95 Hayden Ave. ...
(Date:1/22/2015)... 2015  Transwestern | RBJ today announces the firm brokered a ... Shire a leading biopharmaceutical company, at Two Ledgemont Center in ... Robert Richards , president, and Brian Cohen , senior ... five-floor building at 95 Hayden Ave. Photo - ...
(Date:1/22/2015)... The laboratory information management systems market is a rapidly ... advancements due to factors such as rising pressure to ... systems, and increasing government support for adoption of HCIT ... in the market focus on technological advancements to further ...
Breaking Biology Technology:Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 2Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 3Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 4
... For the second month in a row,the capital markets succumbed ... day of the month the Dow dropped over 300 points ... time. Amid these,fears, biotech was dragged down with the Burrill ... and the Dow, which closed down,3%., "The biotech sector ...
... BEACH, Va., March 3 LifeNet Health,a leading ... This product has been engineered for anterior,cervical fusion ... The new VG1(R) Cervical Bio-implant was co-developed ... represented in the U.S. by DePuy,Spine., "VG1(R) ...
... Calif., March 3 ROBODOC, a Curexo,Technology Company, ... into a,major patent Cross licensing agreement. The terms ... In addition to its current surgical robotics ... 40,000 patents in IBM,S Global Portfolio,and particularly, IBM,s ...
Cached Biology Technology:Biotech Drops Amid Tough Markets in February 2Biotech Drops Amid Tough Markets in February 3LifeNet Health(R) Unveils New Biomedical Spine Implant 2ROBODOC(R) Announces Patent Cross Licensing Agreement With IBM 2
(Date:12/19/2014)... 2014   LaunchKey , the first decentralized mobile authentication ... of Things era, today announced the close of $3 ... led by Metamorphic Ventures with participation from ENIAC Ventures, ... others.  LaunchKey has raised $4 million to date, and ...
(Date:12/17/2014)... N.C. , Dec. 16, 2014 Valencell, a ... its PerformTek biometric technology to industry leaders such as ... accurate, clinically validated, biometric wearable products. These products will ... in Las Vegas . ...
(Date:12/11/2014)... , Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition of ...  report to their offering. One major ... With continuous advances in technology, it is important to ...
Breaking Biology News(10 mins):LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... Institutes of Health have identified a gene associated with ... attacks, irresistible bouts of sleep that can strike at ... has a known role in the immune system, which ... turns against the body,s own tissues, plays an important ...
... May 3, 2009 Ben W. Strowbridge, Ph.D, associate professor ... student in the neurosciences program at Case Western Reserve ... a form of synaptic memory in the olfactory bulb, ... of smell. Their study, entitled "Long-term plasticity of ...
... 2009 Two scientists whose work has led to new ... have been chosen to receive the 2009 March of Dimes ... and Louis M. Kunkel, Ph.D., will share the 2009 March ... and proteins that cause muscular dystrophy, a disorder in which ...
Cached Biology News:Genetic study confirms the immune system's role in narcolepsy 2Genetic study confirms the immune system's role in narcolepsy 3Neuroscientists discover long-term potentiation in the olfactory bulb 2Neuroscientists discover long-term potentiation in the olfactory bulb 3March of Dimes awards $250,000 prize to scientists unraveling the causes of muscular dystrophy 2
With L-glutamine and potassium bicarbonate. Sterile, Insect cell culture tested...
... This CLS number ... number, created to easily ... If showing no availability ... the old Sigma-Aldrich number ...
... Ek Adaptor encodes a T7 promoter, ... ATG translation initation codon, and an N-terminal ... 109 aa sequence that encodes thioredoxin. Fusion ... enhance solubility of many proteins that are ...
...
Biology Products: