Zinc-oxide nanorings circle new applications - GoFuckYourself.com

Juicy D. Links · 03-19-2004, 05:28 PM

Cool reading

Physicists at the Georgia Institute of Technology in the US have grown nanorings of single-crystal zinc oxide. Since the material is piezoelectric and semiconducting, the nanostructures could have applications in sensors, resonators and transducers (X Kong et al. 2004 Science 303 1348)

"This is the first report on the growth of freestanding, single-crystal, complete nanorings, demonstrating the possibility of synthesizing extreme structures and offering a new nanostructure that was not previously thought possible," said team leader Zhong Lin Wang. "The growth mechanism is a spontaneous self-coiling process - the 'slinky' growth mechanism - which is fundamentally a new crystal growth process. It sets the foundation for understanding the formation of polar-surface-induced nanostructures."

Zinc-oxide nanoring

Wang and colleagues made the nanorings by a solid-vapour technique, from powders of zinc oxide, indium oxide and lithium carbonate in a horizontal tube furnace. Heating the materials to 1400° C in argon caused material to deposit on a silicon substrate. Around 20 to 40% of this material was made up of zinc-oxide nanorings with diameters of 1 to 4 microns and shells around 10 to 30 nanometres thick.

"Nanorings are made up of fine nanobelts that are rolled up as coils layer-by-layer, with as many as a hundred loops," said Wang.

Zinc oxide has a wurtzite crystal structure, as do materials such as gallium nitride, aluminium nitride, indium nitride and zinc sulphide. Wang reckons that the results received from zinc oxide should impact the growth of nanostructures for the entire wurtzite family.

"The [zinc oxide] structure can be used for fabricating piezoelectric-based fluid pumps and switches for biotechnology," said Wang. "The near-term application will be in situ, real-time monitoring of blood pressure and blood flow rate." The nanorings could also measure stress at the scale of a single cell. For applications outside biotechnology, the scientists now plan to integrate the piezoelectric nanorings into micro-electromechanical and nano-electromechanical systems, as well as using them to investigate fundamental physical phenomena.

Juicy D. Links · 03-19-2004, 06:21 PM

MattO · 03-19-2004, 06:23 PM

Wesley Crusher would get quite excited over this news.

Wilbo · 03-19-2004, 06:35 PM

They were trying to make exstacy and all they got were those damn nanorings

03-19-2004, 05:28 PM	#1
Juicy D. Links So Fucking Banned Industry Role: Join Date: Apr 2001 Location: N.Y. -Long Island -- Posts: 122,992	Zinc-oxide nanorings circle new applications Cool reading Physicists at the Georgia Institute of Technology in the US have grown nanorings of single-crystal zinc oxide. Since the material is piezoelectric and semiconducting, the nanostructures could have applications in sensors, resonators and transducers (X Kong et al. 2004 Science 303 1348) "This is the first report on the growth of freestanding, single-crystal, complete nanorings, demonstrating the possibility of synthesizing extreme structures and offering a new nanostructure that was not previously thought possible," said team leader Zhong Lin Wang. "The growth mechanism is a spontaneous self-coiling process - the 'slinky' growth mechanism - which is fundamentally a new crystal growth process. It sets the foundation for understanding the formation of polar-surface-induced nanostructures." Zinc-oxide nanoring Wang and colleagues made the nanorings by a solid-vapour technique, from powders of zinc oxide, indium oxide and lithium carbonate in a horizontal tube furnace. Heating the materials to 1400° C in argon caused material to deposit on a silicon substrate. Around 20 to 40% of this material was made up of zinc-oxide nanorings with diameters of 1 to 4 microns and shells around 10 to 30 nanometres thick. "Nanorings are made up of fine nanobelts that are rolled up as coils layer-by-layer, with as many as a hundred loops," said Wang. Zinc oxide has a wurtzite crystal structure, as do materials such as gallium nitride, aluminium nitride, indium nitride and zinc sulphide. Wang reckons that the results received from zinc oxide should impact the growth of nanostructures for the entire wurtzite family. "The [zinc oxide] structure can be used for fabricating piezoelectric-based fluid pumps and switches for biotechnology," said Wang. "The near-term application will be in situ, real-time monitoring of blood pressure and blood flow rate." The nanorings could also measure stress at the scale of a single cell. For applications outside biotechnology, the scientists now plan to integrate the piezoelectric nanorings into micro-electromechanical and nano-electromechanical systems, as well as using them to investigate fundamental physical phenomena.

03-19-2004, 06:21 PM	#2
Juicy D. Links So Fucking Banned Industry Role: Join Date: Apr 2001 Location: N.Y. -Long Island -- Posts: 122,992

03-19-2004, 06:23 PM	#3
MattO The O is for Oohhh Join Date: Feb 2003 Location: AUSTIN TEJAS Posts: 10,861	Wesley Crusher would get quite excited over this news.

03-19-2004, 06:35 PM	#4
Wilbo Confirmed User Join Date: Mar 2001 Location: Baltimore Posts: 2,082	They were trying to make exstacy and all they got were those damn nanorings