Nanogenerator and Nano-Piezotronics

Wang, Z. L. (Zhong Lin)

Title:

Nanogenerator and Nano-Piezotronics

dc.contributor.author	Wang, Z. L. (Zhong Lin)
dc.contributor.corporatename	Georgia Institute of Technology. Nanotechnology Research Center
dc.contributor.corporatename	Georgia Institute of Technology. School of Materials Science and Engineering
dc.date.accessioned	2010-09-08T20:37:47Z
dc.date.available	2010-09-08T20:37:47Z
dc.date.issued	2010-08-31
dc.description	Dr. Zhong Lin (Z.L.) Wang, Regents' Professor in the College of Engineering, Distinguished Professor and Director, Center for Nanostructure Characterization, at Georgia Tech, presented a lecture at the Nano@Tech Meeting on August 31, 2010 at 12 noon in room 1116 of the Marcus Nanotechnology Building.	en_US
dc.description	Runtime: 61:43 minutes
dc.description.abstract	Developing wireless nanodevices and nanosystems is of critical importance for sensing, medical science, environmental/infrastructure monitoring, defense technology and even personal electronics. It is highly desirable for wireless devices to be self-powered without using battery. This is a new initiative in today’s energy research for mico/nano-systems in searching for sustainable self-sufficient power sources [1]. It is essential to explore innovative nanotechnologies for converting mechanical energy, vibration energy, and hydraulic energy into electric energy that will be used to power nanodevices. We have invented an innovative approach for converting nano-scale mechanical energy into electric energy by piezoelectric zinc oxide nanowire arrays [2]. The operation mechanism of the nanogenerator relies on the piezoelectric potential created by an external strain; a dynamic straining of the nanowire results in a transient flow of the electrons in the external load due to the driving force of the piezopotential. We have developed the nanogenerator from fundamental science, to engineering integration and to technological scale-up [3-6]. As today, a gentle straining can output 1.2 V from an integrated nanogenerator [6], using which a self-powered nanosensor has been demonstrated [6]. A commercial LED has been lid up [7]. This is a key step for developing a totally nanowire-based nanosystem [6]. Alternatively, by substituting the gate voltage in a field effect transistor (FET) with the piezopotential creating by an external strain, we have fabricated a series of devices that rely on a coupling between semiconductor and piezoelectric properties and are controlled/tuned by externally applied force/pressure, such as diode, strain sensor and strain-gated logic unites, which are a new field called piezotronics [8]. A three way coupling among piezoelectricity, semiconductor and photonic excitation has demonstrated the piezo-phototronic effect [9].	en_US
dc.format.extent	61:43 minutes
dc.identifier.uri	http://hdl.handle.net/1853/34547
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.relation.ispartofseries	Nano@Tech Lecture Series
dc.subject	Nanotechnology	en_US
dc.subject	Nanogenerators	en_US
dc.subject	Piezo-phototronics	en_US
dc.subject	Piezotronics	en_US
dc.title	Nanogenerator and Nano-Piezotronics	en_US
dc.type	Moving Image
dc.type.genre	Lecture
dspace.entity.type	Publication
local.contributor.corporatename	Institute for Electronics and Nanotechnology (IEN)
local.relation.ispartofseries	Nano@Tech Lecture Series
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