Navigation Links
Strong elasticity size effects in ZnO nanowires
Date:10/14/2008

Recently, zinc oxide (ZnO) nanowires have drawn major interest because of their semiconducting nature and unique optical and piezoelectric properties. Various applications for ZnO nanowires have been conceived, including the next generation of field effect transistors, light emitting diodes, sensors and resonators. ZnO nanowires are also envisioned as nanogenerators by exploiting the coupling of semiconducting and piezoelectric properties.

Researchers at the McCormick School of Engineering and Applied Science at Northwestern University recently performed experiments and computations to resolve major existing discrepancies about the scaling of ZnO nanowires elastic properties. These properties are essential to the design of reliable novel ZnO devices, and the insight emerging from such studies advances scientific understanding about atomic structures, which are also responsible for piezo-electric and piezo-resistive properties.

ZnO nanowires usually have a hexagonal cross-section, with diameters ranging from 5 to 500 nanometers. Interesting changes in their properties arise as the diameter of the wires decreases due to increasing surface-to-volume ratio. Unfortunately, experimental results reported in the literature on wire elasticity for a given diameter exhibit a large variability.

"This highlights one of the major challenges in the field of nanotechnology the accurate measurement of nanoscale mechanical properties," says Horacio Espinosa, professor of mechanical engineering at McCormick. "Indirect measurement techniques and ill-defined boundary conditions affected mechanical properties measurements and resulted in problematic inconsistencies."

Espinosa and his group at Northwestern resolved this discrepancy using a nanoscale material testing system based on microelectromechanical system (MEMS) technology. The system was used to perform in-situ electron microscopy tensile testing of nanowire specimens. Load and displaceme
'/>"/>

Contact: Kyle Delaney
k-delaney@northwestern.edu
847-467-4010
Northwestern University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. STALLERGENES : Strong Business Growth: +17% and Earnings Per Share up 30%
2. Dawson James Securities Initiates Research Coverage on CryoCor, Inc. (Nasdaq: CRYO) with a Strong Buy Rating and $6.00 Target Price
3. Strong Demand Pushes up Both Prices and Sales Volumes for Dragons Main Products
4. U-M research: New plastic is strong as steel, transparent
5. Nobel Award in Medicine Holds Strong Messsage for Animal Activists
6. Monsanto Sees Record Sales in Fiscal Year 2007; Seeds and Traits Business Contributes to Strong Fourth Quarter and Year-End Results
7. Gen-Probe Reports Strong Financial Results for Third Quarter 2007, Raises Full-Year Guidance for Earnings Per Share and Total Revenues
8. Cephalon Announces Strong Third Quarter Financial Results
9. Edwards Lifesciences Forecasts Strong Growth in 2008
10. Genoptix Reports Strong Financial Results For Third Quarter 2007
11. STALLERGENES: 2007: A Further Year of Strong Growth: Up 16%
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2015)... Athena San Diego, an organization that ... in San Diego’s technology and life science sectors, will ... at their Gala on April 30, 2015 from 5-9pm ... http://athenasd.org/events/ , The Pinnacle Awards recognize individuals ... vision of fostering networking, risk taking and diversity of ...
(Date:4/23/2015)... 23, 2015 Six startups from ... April 4-17 as part of the U.S.-Russia Innovation ... group of biotechnology startups to participate in the ... (UNN) and the University of Maryland (UMD) signed ... their respective universities in the biomedical industry in ...
(Date:4/23/2015)... Calif. , April 23, 2015  Cryoport, ... advanced cryogenic logistics solutions for the life sciences ... established its cryogenic logistics solutions within the animal ... with Yancey Farms to support the shipment of ... German Sport horse Stallions. Animal ...
(Date:4/23/2015)... (PRWEB) April 23, 2015 ... in Personalized Medicine, is excited to announce the ... profile . This profile assesses 62 genetic variations ... dosing information for commonly prescribed non-opioid pain medications, ... name Neurontin), alprazolam (brand name Xanax) and acetaminophen ...
Breaking Biology Technology:Athena Pinnacle Awards to Honor Executives, Corporations and Educators Working to Promote Women Leaders 2U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 2U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 3U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 4Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 2Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 3Proove Biosciences Launches World’s First Test to Predict Responders to Commonly Prescribed Non-Opioid Pain Medications 2Proove Biosciences Launches World’s First Test to Predict Responders to Commonly Prescribed Non-Opioid Pain Medications 3
... CoreLab Partners, Inc , the global entity resulting ... in February of this year, has launched a full ... as it relates to Dual Energy X-Ray Absorptiometry ( ... that we have formally launched state-of-the-art imaging solutions to ...
... Physicists at the University of California, Riverside have taken an ... achieving "tunneling spin injection" into graphene. An electron ... This spin comes in two forms electrons are said ... allows for more data storage than is possible with current ...
... Inc. (Nasdaq: SQNM ) today announced ... focusing on retinal diseases and conditions. The initial ... and Sequenom Center for Molecular Medicine (Sequenom CMM) ... (Logo: http://photos.prnewswire.com/prnh/20040415/SQNMLOGO ) ...
Cached Biology Technology:CoreLab Partners Launches New DXA Imaging Service Offerings 2UC Riverside physicists pave the way for graphene-based spin computer 2UC Riverside physicists pave the way for graphene-based spin computer 3Sequenom Announces Formation of Ophthalmology Clinical Advisory Board 2Sequenom Announces Formation of Ophthalmology Clinical Advisory Board 3Sequenom Announces Formation of Ophthalmology Clinical Advisory Board 4Sequenom Announces Formation of Ophthalmology Clinical Advisory Board 5
(Date:4/20/2015)... 2015 Huntington Memorial Hospital is the first ... new miniaturized, wireless monitoring sensor to manage heart failure ... only FDA-approved heart failure monitoring device that has been ... physicians to manage heart failure. The CardioMEMS ... the pulmonary artery (PA) during a non-surgical procedure to ...
(Date:4/14/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... the growing mobile commerce market, announces that its Wocket® ... York Design Awards under the category  ,Product Design – ... Awards are part of a global multi-disciplinary awards program. ... the marketplace, industry and judging panel. Winners will be ...
(Date:4/9/2015)... , April 9, 2015 Synaptics Inc. (NASDAQ: ... solutions, announced today that it will report financial results ... April 23, 2015, after the close of market. The ... and investors at 2:00 p.m. PT (5:00 p.m. ET), ... To participate on the live call, analysts and ...
Breaking Biology News(10 mins):Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3Synaptics to Report Third Quarter Results on April 23 2
... threatened with extinction around the globe, efforts to save ... conservation: a chance for complete recovery, according to health ... other members of the Blue Iguana Recovery Program. ... the Blue Iguana Recovery Programa consortium of local and ...
... French . Some of the human X ... outside Africa, according to an international team of researchers led ... University of Montreal and the CHU Sainte-Justine Research Center. The ... Biology and Evolution. "This confirms recent findings ...
... men and women in England and over a third of ... diabetes and heart disease and can significantly shorten a person,s ... journal International Journal of Behavioral Nutrition and Physical Activity ... of weight loss programs based on diet and exercise. ...
Cached Biology News:Grand Cayman blue iguana: Back from the brink of extinction 2Genetic research confirms that non-Africans are part Neanderthal 2'Love your body' to lose weight 2
... . The sensitive conductivity detector CE 4710, ... the measuring cell in a thermostatted environment. ... Data processing is provided by the CE 4900 ... high pressure CE 4100 dual piston pump. ...
... media and other fluid sources for 4 ... speed of each individual pump is controlled ... are exactly maintained. ,High-precision controlled peristaltic ... types, which allows flow rates between 0.01 ...
... cassette is designed to allow ampicillin selection ... gb2 driving the gene for ampicillin resistance ... Em7 promoter. It mediates higher transcription efficiency ... synthetic polyadenylation signal terminates the ampicillin expression. ...
... for the fast and simple integration of ... position (for the generation of transgenic mouse ... to allow neomycin / kanamycin selection in ... prokaryotic promoter (gb2) for expression of kanamycin ...
Biology Products: