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 One in 5 materials chemistry papers may be wrong, study suggests
15.12.2017 | Georgia Institute of Technology

nachricht Scientists channel graphene to understand filtration and ion transport into cells
11.12.2017 | National Institute of Standards and Technology (NIST)

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Engineers program tiny robots to move, think like insects

15.12.2017 | Power and Electrical Engineering

One in 5 materials chemistry papers may be wrong, study suggests

15.12.2017 | Materials Sciences

New antbird species discovered in Peru by LSU ornithologists

15.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>