HOME >> BIOLOGY >> NEWS
Scientists discover how to make nanostructures assemble themselves

PRINCETON, N.J. -- Princeton researchers have created ultrasmall plastic structures with a method that is cheaper and more versatile than previous techniques. The discovery has yielded surprising insights into the behavior of materials at very small scales, while spawning many basic research questions. It also could pave the way to a new generation of miniature products, from computer memory chips and video components to devices for sorting DNA molecules.

Professor of electrical engineering Stephen Chou and graduate student Larry Zhuang found that they could coax a flat sheet of plastic resin to assemble itself into a minute, perfectly ordered array of pillars -- with remarkably little specialized equipment. The pillars are a little more than half a micron (a millionth of a meter) in height and width. Viewing one of these pillars next to the head of a pin is like looking at a stack of about 15 quarters next to the dome of the U.S. Capitol. Chou expects that refinements of the technique will yield even smaller structures.

The researchers discovered the technique accidentally while working on another nano-fabrication process called imprinting. In that process, also invented by Chou, a pattern, or mask, is pressed into soft plastic polymer, like pressing minute fingers into wet plaster. The researchers were pressing a mask into polymer when dust prevented the two pieces from coming together. Afterwards, when they examined the polymer, they found that it contained a pattern of pillars even though the mask never touched it. Not only had the pillars grown by themselves, they had arranged themselves into a perfectly ordered array.

"It was a very surprising discovery," says Chou. "No one had ever seen such a thing."

Suddenly Chou had an entirely new production technique: simply bring the two pieces close together and let the pattern assemble itself. He dubbed the new approach LISA, for Lithographically I
'"/>

Contact: Steven Schultz
sschultz@princeton.edu
609-258-5729
Princeton University
17-Nov-1999


Page: 1 2 3

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
(Date:12/10/2014)... Dec. 9, 2014  Wake Forest Baptist Medical Center today ... its School of Medicine. Funding for this $50 million ... that will be publicly launched next summer. ... the former 60 series R.J. Reynolds Tobacco Company complex, ... will begin immediately with plans to be ready to ...
(Date:12/5/2014)... -- Tute Genomics, a leader in cloud-based solutions for genome ... led by UK-based Eurovestech. Peak Ventures and a number ... "We are at a pivotal time in ... seeks new approaches for the diagnosis, treatment and prevention ... and CEO of Tute Genomics. "One of the main ...
(Date:11/21/2014)... -- Earlier this year Donald Spector , Chairman of ... the most prolific inventors in the world, got a ... to third party agencies. Spector envisioned this technology even ... earliest known patents in this area. Now major technology ... care, elder care and hospital applications. This technology has ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4
(Date:12/19/2014)... 18, 2014  Decision Resources Group finds that the ... will grow moderately through 2023 as the aging population, ... of dental biomaterials all spur procedure volumes. Growth will ... China and India ... within reach for a larger proportion of the population. ...
(Date:12/19/2014)... 18, 2014   ISN has released its ... Indicators publication series. With data aggregated from ... in 2013 within its online contractor management platform, ISNetworld, ... performance indicator (KPI) statistics. The ... publication is available in two industry specific volumes: ...
(Date:12/17/2014)... New York, NY (PRWEB) December 16, 2014 ... undergone significant changes since 2013, which is why IBISWorld ... one, this industry continues to benefit from an intensified ... 2014, the proposal for new emission standards for power ... affected industry operators. According to IBISWorld Industry Analyst Sarah ...
(Date:12/17/2014)... Bellingham, Washington, USA (PRWEB) December 16, 2014 ... Kirstin Baum, manager at Philipps- Universität Marburg’s Department ... optics and photonics, in the newly released ... 2015-2016. “And never be too shy to ask ... STEM (science, technology, engineering, and mathematics) occupations ranging ...
Breaking Biology Technology:Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3
Cached News: