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:3/30/2015)...  Heidrick & Struggles (Nasdaq: HSII ), the premier ... and culture shaping worldwide, today  announced that ... global Healthcare and Life Sciences practice. As Global ... lead a team of more than 80 partners, principals and ... Asia serving clients in the biopharmaceutical, ...
(Date:3/30/2015)... OTTAWA , March 30, 2015 /CNW/ - A ... today on the salaries and demographic profiles of new ... "Opening the Door – Building Careers for New Grads ... Canada,s Research-Based Pharmaceutical Companies (Rx&D) and features ... federal Career Focus wage subsidy program from 2013 to ...
(Date:3/30/2015)... , March 30, 2015  Naldemedine, an ... development by Shionogi & Co., Ltd., met its ... study (COMPOSE I) for the treatment of opioid-induced ... pain receiving opioid therapy. Study results showed that ... significantly improved the frequency of spontaneous bowel movement ...
(Date:3/29/2015)... , March 29, 2015 ... of important study data showing the presence ... 1,599 gynecologic cancer samples. Using Caris Molecular ... service, researchers identified expression of programmed cell ... independent of histology while its ligand (PD-L1) ...
Breaking Biology Technology:Heidrick & Struggles Strengthens Leadership of Healthcare - Life Sciences Practice 2New Report on Graduates in Canadian Biotech Industry Sheds Light on Hiring Practices 2New Report on Graduates in Canadian Biotech Industry Sheds Light on Hiring Practices 3New Report on Graduates in Canadian Biotech Industry Sheds Light on Hiring Practices 4Shionogi & Co., Ltd. Announces That Naldemedine Meets Primary Endpoint In A Phase 3 Study For The Treatment Of Opioid-Induced Constipation 2Shionogi & Co., Ltd. Announces That Naldemedine Meets Primary Endpoint In A Phase 3 Study For The Treatment Of Opioid-Induced Constipation 3Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 2Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 3Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 4
... gotten the science wrong. They,ve gotten the law wrong. Why should ... we trust them to ... for,Lifesaving Cures responded today as opponents of stem cell cures refiled,their ... Said Donn Rubin, Chair of Missouri Coalition for Lifesaving Cures, ...
... new to the market, liquid crystal display (LCD) televisions ... created by University of Houston professors., Vincent Donnelly, Demetre ... of Engineering, have developed a technique that allows nanotech ... industry away from the LCD display to the superior ...
... September 7, 2007, SAN DIEGO, Sept. 5 ... Neurocrine Biosciences will,present at the Thomas Weisel Partners Healthcare ... at 11:30 a.m. Eastern,Time (ET) /8:30 a.m. Pacific Time ... accessed on the Company,s website at, http://www.neurocrine.com ...
Cached Biology Technology:3 strikes, you're out? Refiling of Amendment to Change Constitution to Criminalize Stem Cell Cures Shows Trouble with Anti-Cures Cause 2New technique producing small things in large quantities 2
(Date:3/20/2015)... , March 20, 2015 NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market, ... is one of the products featured in 2015 "I ... at 11:00 PM EST on the DIY Network.   ... Las Vegas , site of the 2015 ...
(Date:3/17/2015)... Minn. , March 17, 2015 ... technology company specializing in clinical study management systems, ... be in attendance at ARENA,s Outsourcing in Clinical ... NC.  This event provides an excellent forum for ... easy-to-use, flexible and affordable software-as-a-service (SaaS) eClinical technology ...
(Date:3/12/2015)... FAIRFAX, Va. , March 12, 2015 ... company and a member of the Texas Instruments Design ... Chandrababu Naidu has demonstrated its IriShield USB MK2120U ... iris scanning facility for pension distribution. ... and assembled to be marketed in India ...
Breaking Biology News(10 mins):NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 2NXT-ID's Wocket Biometric Smart Wallet to Air on "I Want That" International CES Special 3Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 2Indian States See IriTech's Scanner Bolstering Efficiency of Authentication for Aadhaar 3
... life depends share an attribute with paper airplanes: Unless folded ... puzzled by how the long, linear proteins cranked out by ... shapes they must assume to perform their function. They only ... essential proteins, the folding takes place out of sight, hidden ...
... of Pittsburgh-led researchers discovered that the primary bacteria ... drug-tolerant strains flourish in these bacterial communities, the ... . The findings suggest a possible reason why ... treatment and indicate a potential cause of the ...
... in desert regions where fresh water is usually in very ... in International Journal of Global Environmental Issues , Peter ... The Netherlands, has hit on the idea of using the ... water locked in gypsum. Fresh water resources are scarce ...
Cached Biology News:Researchers reveal insights into hidden world of protein folding 2Researchers reveal insights into hidden world of protein folding 3Researchers reveal insights into hidden world of protein folding 4Source of drug-tolerant tuberculosis possibly behind TB relapses, intensity of treatment 2Rocky water source 2
ANTI DEOXY CORTICO...
... Automatic High Sensitivity Laboratory Osmometer for both 0.2 and 2.0 mL samples for ... and record keeping. Bar code reading capability with optional scanner. RS-232 port. ... ... ...
Secure-Seal™ hybridization chamber gasket, eight chambers, 9 mm diameter, 0.8 mm deep *set of 20*...
sodium channel, nonvoltage-gated 1 alpha,...
Biology Products: