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:
*Name:
*Comment:
*Email:


(Date:1/20/2016)... Jan. 20, 2016   MedNet Solutions , an ... spectrum of clinical research, is pleased to announce the ... achievements are the result of the company,s laser focus ... eClinical , it,s comprehensive, easy-to-use and highly affordable ... --> Key MedNet growth achievements in 2015 include: ...
(Date:1/13/2016)... , January 13, 2016 ... has published a new market report titled - Biometric Sensors ... and Forecast, 2015 - 2023. According to the report, the global ... and is anticipated to reach US$1,625.8 mn by 2023, ... 2023. In terms of volume, the biometric sensors market ...
(Date:1/8/2016)... and MANCHESTER, United Kingdom , ... a developer of innovative sensor-based diagnostic products, today announced the ... by new and existing investors.  Proceeds from the financing will ... Scanner , a hand-held device for detecting early-stage pressure ulcers. ... Ireland after receiving CE Mark approval. The ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... (PRWEB) , ... February 08, 2016 , ... ... (AI) and leading supplier of Semantic Graph Database technology, today announced the availability ... release of Cloudera Enterprise through the Cloudera Certified Technology Program (CCPT). ...
(Date:2/8/2016)... R&D program for the development of future natural products for ... research and development center in Israel ... Stockton has a variety of products adapted ... active in more than 35 counties worldwide. ... flagship product Timorex Gold ® is used to control ...
(Date:2/8/2016)... BATH, England , February 8, 2016 ... Genetics Ltd ("Atlas Genetics" or the "Company"), the ultra-rapid Point-Of-Care ... approval to CE Mark its Chlamydia trachomatis (CT) test to ... requirements of the IVD Directive (98/79/EC), the CT test is ... --> --> The launch of the ...
(Date:2/6/2016)... ... February 06, 2016 , ... Contact:, ... Center for Excellence in Education Sponsors Teacher Training Program , Bite of Science ... – The Center for Excellence in Education (CEE) will sponsor a Bite of ...
Breaking Biology Technology:
Cached News: