Navigation Links
NIST team develops novel method for nanostructured polymer thin films
Date:9/14/2007

All researchers at the National Institute of Standards and Technology (NIST) wanted was a simple, quick method for making thin films of block copolymers or BCPs (chemically distinct polymers linked together) in order to have decent samples for taking measurements important to the microelectronics industry. What they got for their efforts, as detailed in the Sept. 12, 2007, Nano Letters,* was an unexpected bonus: a unique annealing process that may make practical the use of BCP thin films for patterning nanoscale features in next-generation microchips and data storage devices.

BCP thin films have been highly desired by semiconductor manufacturers as patterns for laying down very fine features on microchips, such as arrays of tightly spaced, nanoscale lines. Annealing certain BCP filmsa controlled heating processcauses one of the two polymer components to segregate into regular patterns of nanocylinder lines separated by distances as small as five nanometers or equally regular arrays of nanoscale dots. Chemically removing the other polymer leaves the pattern behind as a template for building structures on the microchip.

In traditional oven annealing the quality of the films is still insufficient even after days of annealing. A process called hot zone annealingwhere the thin film moves at an extremely slow speed through a heated region that temporarily raises its temperature to a point just above that at which the cylinders become disorderedhas previously been used for creating highly ordered BCP thin films with a minimum of defects but little orientation control. For some polymer combinations, the order-disorder transition temperature is so high that it is virtually impossible for manufacturers to heat them sufficiently without degradation occurring.

To eliminate the time and temperature restraints without losing the order yielded by hot zone annealing, the NIST researchers developed a cold zone annealing system where the polymers are completely processed well below their order-disorder transition temperature. Properly controlled, the lower-temperature processing not only works with BCPs for which hot-zone annealing is impractical, but, as the NIST experiments showed, also repeatedly produces a highly ordered thin film in a matter of minutes. NIST researchers also discovered that the alignment of the cylinders was controlled by the cold zone annealing conditions. Because it is simple, yields consistent product quality and has virtually no limitations on sample dimensions, the NIST method is being evaluated by microelectronic companies to fabricate highly ordered sub 30 nm features.

The next step, the NIST researchers say, is to better understand the fundamental processes that make the cold zone annealing system work so well and refine the measurements needed to evaluate its performance.


'/>"/>

Contact: Michael E. Newman
michael.newman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)
Source:Eurekalert

Related biology technology :

1. Internet Scout Project develops better tools for online research
2. Gehl develops new remote control boom controller
3. GE Healthcare develops digital medication system
4. U.K. firm develops smart fabrics
5. Scientist takes back patents and develops product others ignored
6. Former SGI/Cray Team Develops Products for G5 Platform
7. IBM Develops Wireless Security Service
8. Wisconsin Researcher Co-Develops Earthquake Alarm
9. Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase
10. High-Fidelity PCR with a Novel Polymerase Mixture
11. Challenge the Performance of Your Hot-Start PCRs with FastStart Taq DNA Polymerase and the Novel FastStart High Fidelity PCR System
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/22/2017)... Scientists propose in Nature blocking ... Gaucher and maybe other lysosomal storage diseases as a ... current therapies. An international research team led ... also included investigators from the University of Lübeck in ... 22. The study was conducted in mouse models of ...
(Date:2/22/2017)... ... February 22, 2017 , ... ProMIS Neurosciences (“ProMIS” or ... neurodegenerative diseases, today announced it has issued a scientific white paper entitled “Results ... a series of commentaries from ProMIS’s scientific team offering insight into the Company’s ...
(Date:2/22/2017)... ... February 22, 2017 , ... LabRoots , the leading provider of ... world, is pleased to announce the launch of a new scholarship for young scientists ... , This merit-based scholarship is open to all high school seniors, 17 years or ...
(Date:2/22/2017)... 22, 2017 Origin (Origin Agritech, LLC, a subsidiary of ... provider, and Arcadia (Arcadia Biosciences, Inc., NASDAQ: ... commercializes agricultural productivity traits and nutritional products, today announced their collaboration ... developed in China to the ... ...
Breaking Biology Technology:
(Date:2/8/2017)... Report Highlights The global biosurgery ... billion in 2016 at a compound annual growth rate ... Includes - An overview of the global market for ... from 2015 and 2016, and projections of compound annual ... market on the basis of product type, source, application, ...
(Date:2/6/2017)... According to Acuity Market Intelligence, ongoing ... to continue to embrace biometric and digital identification ... Border Control (ABC) eGates and 1436 Automated Passport ... 163 ports of entry across the globe. Deployments ... combined CAGR of 37%. APC Kiosks reached 75% ...
(Date:2/2/2017)... , Feb. 2, 2017  EyeLock LLC, a ... a new white paper " What You Should Know ... problem of ensuring user authenticity is a growing concern. ... authentication of users. However, traditional authentication schemes such as ... Biometric authentication offers an elegant solution to ...
Breaking Biology News(10 mins):