Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Testing sticky stuff with a ’fly’s eye’

16.02.2004


A new collaboration at the National Institute of Standards and Technology (NIST) will contend with lots of sticking points--by design. NIST and industry researchers intend to devise rapid screening and measurement methods that speed discovery of new epoxies, pressure-sensitive adhesives and other products manufactured for the $30 billion global adhesives market.


Arrays of multi-colored dots indicate the strength of different adhesives measured with the NIST multi-lens testing system. Red areas indicate the stronger bonds, blue areas the weaker.



In a project just getting under way, the partners will refine and extend miniaturized technologies for simultaneous testing of hundreds of systematically varying adhesive formulations. One test platform is designed for screening new combinations of components used to make labels, skin patches and other pressure-sensitive adhesives, a fast-growing segment of the market. It includes an array of up to 1,600 "micro lenses," an arrangement resembling a fly’s compound eye. In an automated process, each lens is coated with an incrementally different formulation. The array is lowered until each lens contacts a wafer-like substrate coated with a thin film that also can vary in chemical composition and thickness. The array then is raised until each lens detaches from the substrate.

From measurements of changes in the position of lenses and other preselected variables, researchers can deduce the adhesive strength of different formulations under deliberately varying conditions. A microscope mounted below the testing platform monitors the entire process. The resulting color-coded maps show changes in adhesion energy (an indicator of an adhesive’s strength) as lens and substrate bond and, then, separate.


Another system for high-throughput testing of prospective epoxies and other adhesives for the microelectronics and other industries also is under development as part of this new collaborative effort.


Partners in the project include Intel and National Starch and Chemical, an ICI company. Both Intel and ICI are members of the NIST Combinatorial Methods Center (NCMC) consortium. For more information, go to http://polymers.msel.nist.gov/combi/index.html

Mark Bello | EurekAlert!
Further information:
http://www.nist.gov/
http://polymers.msel.nist.gov/combi/index.html

More articles from Materials Sciences:

nachricht New gel-like coating beefs up the performance of lithium-sulfur batteries
22.03.2017 | Yale University

nachricht Pulverizing electronic waste is green, clean -- and cold
22.03.2017 | Rice University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

When Air is in Short Supply - Shedding light on plant stress reactions when oxygen runs short

23.03.2017 | Life Sciences

Researchers use light to remotely control curvature of plastics

23.03.2017 | Power and Electrical Engineering

Sea ice extent sinks to record lows at both poles

23.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>