New nanoglue is thin and supersticky

Mar 05, 2012

Engineers at the University of California, Davis, have invented a superthin "nanoglue" that could be used in new-generation microchip fabrication.

"The material itself (say, semiconductor wafers) would break before the glue peels off," said Tingrui Pan, professor of biomedical engineering. He and his fellow researchers have filed a provisional patent.

Conventional glues form a thick layer between two surfaces. Pan's nanoglue, which conducts heat and can be printed, or applied, in patterns, forms a layer the thickness of only a few molecules.

The nanoglue is based on a transparent, called polydimethylsiloxane, or PDMS, which, when peeled off a smooth surface usually leaves behind an ultrathin, sticky residue that researchers had mostly regarded as a nuisance.

Pan and his colleagues realized that this residue could instead be used as glue, and enhanced its bonding properties by treating the residue surface with oxygen.

The nanoglue could be used to stick into a stack to make new types of multilayered . Pan said he thinks it could also be used for home applications — for example, as double-sided tape or for sticking objects to tiles. The glue only works on smooth surfaces and can be removed with heat treatment.

The journal Advanced Materials published a paper on the work in December.

Explore further: Demystifying nanocrystal solar cells

Provided by University of California - Davis

4.4 /5 (8 votes)

Related Stories

Smart Contact Lenses

Jul 30, 2008

"Smart" contact lenses that measure pressure within the eye and dispense medication accordingly could be made possible using a new material developed by biomedical engineers at UC Davis.

Miniature pressure sensors for medical touch

Mar 05, 2012

A new kind of flexible, transparent pressure sensor, developed at the University of California, Davis, for use in medical applications, relies on a drop of liquid.

Glass that cleans itself

Dec 07, 2011

Eyeglasses need never again to be cleaned, and dirty windscreens are a thing of the past! Researchers at the Max Planck Institute for Polymer Research in Mainz and the Technical University Darmstadt are now ...

Recommended for you

DNA nanoswitches reveal how life's molecules connect

Jan 30, 2015

A complex interplay of molecular components governs almost all aspects of biological sciences - healthy organism development, disease progression, and drug efficacy are all dependent on the way life's molecules ...

Holes in valence bands of nanodiamonds discovered

Jan 28, 2015

Nanodiamonds are tiny crystals only a few nanometers in size. While they possess the crystalline structure of diamonds, their properties diverge considerably from those of their big brothers, because their ...

Demystifying nanocrystal solar cells

Jan 28, 2015

ETH researchers have developed a comprehensive model to explain how electrons flow inside new types of solar cells made of tiny crystals. The model allows for a better understanding of such cells and may ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

QQBoss
not rated yet Mar 05, 2012
"The nanoglue could be used to stick silicon wafers into a stack to make new types of multilayered computer chips." needs to be reconciled with "...and can be removed with heat treatment."

If the temperature of the needed heat treatment is anywhere close to 125-150dC (even if it is higher for rapid release, a lower temperature may also release, just more slowly), then this particular usage is a non-starter.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.