Navigation Links
Nanowire generates power by harvesting energy from the environment
Date:9/27/2007

CHAMPAIGN, Ill. As the sizes of sensor networks and mobile devices shrink toward the microscale, and even nanoscale, there is a growing need for suitable power sources. Because even the tiniest battery is too big to be used in nanoscale devices, scientists are exploring nanosize systems that can salvage energy from the environment.

Now, researchers at the University of Illinois have shown that a single nanowire can produce power by harvesting mechanical energy. Made of piezoelectric material, the nanowire generates a voltage when mechanically deformed. To measure the voltage produced by such a tiny wire, however, the researchers first had to build an extremely sensitive and precise mechanical testing stage.

With the development of this precision testing apparatus, we successfully demonstrated the first controlled measurement of voltage generation from an individual nanowire, said Min-Feng Yu, a professor of mechanical science and engineering, and a researcher at the universitys Beckman Institute. The new testing apparatus makes possible other difficult, but important, measurements, as well.

Yu and graduate students Zhaoyu Wang, Jie Hu, Abhijit Suryavanshi and Kyungsuk Yum describe the measurement, and the measurement device, in a paper accepted for publication in the journal Nano Letters, and posted on the journals Web site.

The nanowire was synthesized in the form of a single crystal of barium titanate, an oxide of barium and titanium used as a piezoelectric material in microphones and transducers, and was approximately 280 nanometers in diameter and 15 microns long.

The precision tensile mechanical testing stage is a finger-size device consisting of two coplanar platforms one movable and one stationary separated by a 3-micron gap. The movable platform is driven by a single-axis piezoelectric flexure stage with a displacement resolution better than 1 nanometer.

When the researchers piezoelectric nanowire was placed across the gap and fastened to the two platforms, the movable platform induced mechanical vibrations in the nanowire. The voltage generated by the nanowire was recorded by high-sensitivity, charge-sensing electronics.

The electrical energy produced by the nanowire for each vibrational cycle was 0.3 attojoules (less than one quintillionth of a joule), Yu said. Accurate measurements this small could not be made on nanowires before.

While the researchers created mechanical deformations in the nanowire through vibrations caused by external motion, other vibrations in the environment, such as sound waves, should also induce deformations. The researchers next step is to accurately measure the piezoelectric nanowires response to those acoustic vibrations.

In addition, because of the fine precision offered by the mechanical testing stage, it should also be possible to quantitatively compare the intrinsic properties of the nanowire to those of the bulk material, Yu said. This will allow us to study the scale effect related to electromechanical coupling in nanoscale systems.


'/>"/>

Contact: James E. Kloeppel
kloeppel@uiuc.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert

Related biology technology :

1. New Kit Generates Exceptionally Pure Total RNA for RT-PCR
2. High-Throughput System Generates Ultra-Pure PCR Products Suitable for All Applications
3. A Versatile Power Supply for All Electrophoresis Applications
4. Increase the Power and Sensitivity for Your cDNA Synthesis with the New Transcriptor Reverse Transcriptase
5. PCR Grade Deoxynucleotides Additional power to perfect your PCR experiments
6. The DIG System Nonradioactive Automated High-Throughput In Situ Hybridization: a Powerful Tool for Functional Genomics Research
7. 2100 expert software Powerful software for the analysis of RNA, DNA, proteins, and cells with the Agilent 2100 bioanalyzer
8. Temporal Temperature Gradient Electrophoresis: A Powerful Technique to Screen Mutations
9. National Instruments DIAdem -- Complete Your Technical Data Management Framework with Powerful Off-line Analysis, Visualization, and Report Generation
10. SNPs Powerful Tools for Association Studies
11. David Brooks: Segmented nation looks for solidarity amid IT-powered niches
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... TORONTO , June 23, 2016 /PRNewswire/ - ... Ontario biotechnology company, Propellon ... the development and commercialization of a portfolio of ... cancers. Epigenetic targets such as WDR5 represent an ... contribute significantly in precision medicine for cancer patients. ...
(Date:6/23/2016)...  The Biodesign Challenge (BDC), a university competition that ... living systems and biotechnology, announced its winning teams at ... New York City . The teams, ... at MoMA,s Celeste Bartos Theater during the daylong summit. ... curator of architecture and design, and Suzanne Lee ...
(Date:6/23/2016)... Ky. , June 23, 2016 ... two Phase 1 clinical trials of its complement ... placebo-controlled, single and multiple ascending dose studies designed ... pharmacodynamics (PD) of subcutaneous injection in healthy adult ... subcutaneously (SC) either as a single dose (ranging ...
(Date:6/23/2016)... ... June 23, 2016 , ... Regulatory Compliance Associates® Inc. (RCA), ... free webinar on Performing Quality Investigations: Getting to Root Cause. ... no charge. , Incomplete investigations are still a major concern to the Regulatory ...
Breaking Biology Technology:
(Date:6/3/2016)... 3, 2016 Das ... Nepal hat ein 44 ... geprägter Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, ... Produktion und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte ... Januar teilgenommen, aber Decatur wurde als konformste ...
(Date:6/2/2016)... The Weather Company , an IBM Business (NYSE: IBM ... which consumers will be able to interact with IBM Watson ... or text and receive relevant information about the product or ... long sought an advertising solution that can create a one-to-one ... valuable; and can scale across millions of interactions and touchpoints. ...
(Date:6/1/2016)... YORK , June 1, 2016 ... Technology in Election Administration and Criminal Identification to Boost ... to a recently released TechSci Research report, " Global ... By Region, Competition Forecast and Opportunities, 2011 - 2021", ... 24.8 billion by 2021, on account of growing security ...
Breaking Biology News(10 mins):