Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Studying the force: Turner earns CAREER award for research on micro-devices

Kevin T. Turner
Kevin T. Turner

Abstract:
Imagine reading this article on an electronic screen that could be rolled up and put into a pocket. Someday, the electronics to power this kind of screen may be produced by a process that relies on a very simple tool: a stamp.

Studying the force: Turner earns CAREER award for research on micro-devices

Madison, WI | Posted on November 13th, 2009

Reliable flexible displays are only one of a variety of new microelectronic and micromechanical devices that may become possible thanks to fundamental research by Mechanical Engineering Assistant Professor Kevin Turner. Turner is studying the underlying physics and mechanics of adhesion during a process called microtransfer printing. He will use his research to improve microtransfer printing manufacturing processes, which eventually could be used to produce a host of innovative technologies, such as advanced optoelectronic devices, high efficiency solar cells, and new types of microelectromechanical systems.

His work has garnered a prestigious National Science Foundation CAREER award, which recognizes faculty members at the beginning of their academic careers who have developed creative projects that effectively integrate advanced research and education. Turner's award comes with a five-year $430,000 grant.

Microtransfer printing is essentially a process that "prints" with solid materials rather than ink. A silicone stamp is designed with a smooth side that is used to pick up micro- or nanostructures from the substrate on which they are originally fabricated. The stamp is used to transfer these structures — which may be fully processed integrated circuits or building blocks for more complex devices — and places them down on another substrate or functional device.

Traditional silicon-based microelectronic devices are constructed on thick wafers, which produce rigid devices. To create a flexible device, such as a flexible display or processor, very thin layers of single crystal silicon can be peeled from a thick substrate and placed on to a compliant substrate. Even though silicon is a stiff, brittle material, it can be made extremely flexible by making it less than 1-micron thick.

However, a key challenge is that there are few techniques available to move large-area thin layers, which are floppy and fragile. Microtransfer printing has emerged as a potential option for thin layer transfer since it can be done quickly and used to create a large number of devices.

Microtransfer printing relies on surface adhesion that occurs thanks to a force known as the van der Waals force. At room temperature, the smooth surface of the silicone stamp bonds directly to micro- or nanostructures via these forces, allowing the structures to be picked up. In nature, van der Waals forces allow gecko lizards to adhere their feet to surfaces in order to scale walls and scamper across ceilings.

Turner will use a combination of modeling and experiments to investigate the fundamental behavior of van der Waals-based adhesion in microtransfer printing processes. Based on this fundamental study, he will explore using surface texture and geometric structures on the surfaces of the silicone stamps to control adhesion. He also will identify optimal stamp designs for the pick up and release of micro- and nanostructures, will research new types of composite stamps based on materials other than silicone, and will examine how different loading techniques can be used to further control adhesion.

"If we measure the forces that govern microtransfer processes and develop computational models that capture the fundamental interfacial behavior, then we can examine higher level manufacturing questions," Turner says. "We then can use that knowledge to design more effective manufacturing processes and techniques."

In addition to his research, Turner will develop advanced graduate courses in adhesion and contact mechanics, as well as an undergraduate elective in the design and manufacturing of nano- and microsystems. He also will host local K-12 teachers in his lab during the summer and will work with the teachers to develop lesson plans about nanotechnology for elementary and high school students.

####

About University of Wisconsin-Madison
In achievement and prestige, the University of Wisconsin–Madison has long been recognized as one of America's great universities. A public, land-grant institution, UW–Madison offers a complete spectrum of liberal arts studies, professional programs and student activities. Spanning 933 acres along the southern shore of Lake Mendota, the campus is located in the city of Madison.

For more information, please click here

Copyright © University of Wisconsin-Madison

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Arrowhead to Present at Jefferies 2015 Hepatitis B Summit August 5th, 2015

Engineering a better 'Do: Purdue researchers are learning how August 4th, 2015

Proving nanoparticles in sunscreen products August 4th, 2015

Global Carbon Nanotubes Industry 2015: Acute Market Reports August 4th, 2015

Display technology/LEDs/SS Lighting/OLEDs

Pixelligent Launches New PixClear® Light Extraction Materials for OLED Lighting August 4th, 2015

Physics

World's quietest gas lets physicists hear faint quantum effects August 4th, 2015

Solid state physics: Quantum matter stuck in unrest August 1st, 2015

Thin films

Thin films offer promise for ferroelectric devices: Researchers at Tokyo Institute of Technology demystify the ferroelectric properties observed in hafnium-oxide-based thin films, revealing a potentially useful device material August 3rd, 2015

Nano Spray Instrument Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

3D printing

3D-printed 'smart cap' uses electronics to sense spoiled food July 20th, 2015

Silica 'spiky screws' could enhance industrial coatings, additive manufacturing June 24th, 2015

$8.5M Grant For Developing Nano Printing Technology: 4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015

On the Surface of Polymers June 17th, 2015

Possible Futures

Global Carbon Nanotubes Industry 2015: Acute Market Reports August 4th, 2015

Nanozirconia Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Self-Healing Nano Anti-rust Coatings Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Nano Spray Instrument Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Academic/Education

Pakistani Students Who Survived Terror Attack to Attend Weeklong “NanoDiscovery Institute” at SUNY Poly CNSE in Albany July 29th, 2015

Deben reports on the use of their CT500 in the X-ray microtomography laboratory at La Trobe University, Melbourne, Australia July 22nd, 2015

JPK reports on the use of SPM in the Messersmith Group at UC Berkeley looking at biologically inspired polymer adhesives. July 21st, 2015

Renishaw adds Raman analysis to Scanning Electron Microscopy at the University of Sydney, Australia July 9th, 2015

MEMS

Iranian Scientists Create Best Conditions for Synthesis of Gold Nanolayers July 23rd, 2015

Robust new process forms 3-D shapes from flat sheets of graphene June 23rd, 2015

Slip sliding away: Graphene and diamonds prove a slippery combination June 10th, 2015

MEMS Industry Group Hosts Its First MEMS/Sensors Conference Session at Transducers 2015: MIG Speakers Will Explore Technology Transfer, Emerging MEMS/Sensors, Manufacturing Infrastructure and Process Technology, June 23 in Anchorage June 3rd, 2015

Announcements

Arrowhead to Present at Jefferies 2015 Hepatitis B Summit August 5th, 2015

Engineering a better 'Do: Purdue researchers are learning how August 4th, 2015

Proving nanoparticles in sunscreen products August 4th, 2015

Global Carbon Nanotubes Industry 2015: Acute Market Reports August 4th, 2015

Grants/Awards/Scholarships/Gifts/Contests/Honors/Records

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Springer and Tsinghua University Press present the second Nano Research Award: Paul Alivisatos of the University of California Berkeley receives the honor for outstanding contributions in nanoscience July 30th, 2015

European Technology Platform for Nanomedicine and ENATRANS European Consortium Launch the 2nd edition of the Nanomedicine Award: The Award to be presented at BIO-Europe conference in Munich, November 2015 July 30th, 2015

Publication on Atomic Force Microscopy based nanoscale IR Spectroscopy (AFM-IR) persists as a 2015 top downloaded paper July 29th, 2015

Photonics/Optics/Lasers

Pixelligent Launches New PixClear® Light Extraction Materials for OLED Lighting August 4th, 2015

The annual meeting on High Power Diode Lasers & Systems will be held as part of the Enlighten Conference, October 14th & 15th August 4th, 2015

MIPT researchers clear the way for fast plasmonic chips August 3rd, 2015

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Solar/Photovoltaic

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Springer and Tsinghua University Press present the second Nano Research Award: Paul Alivisatos of the University of California Berkeley receives the honor for outstanding contributions in nanoscience July 30th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Rice University finding could lead to cheap, efficient metal-based solar cells: Plasmonics study suggests how to maximize production of 'hot electrons' July 22nd, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project