In the experiments conducted by Balandin and the other researchers, they were surprised that the improvement of thermal properties of graphene coated copper films was significant despite the fact that graphene’s thickness is only one atom.
UC Riverside and University of Manchester researchers combine graphene and copper in hopes of shrinking electronics
Researchers have discovered that creating a graphene-copper-graphene “sandwich” strongly enhances the heat conducting properties of copper, a discovery that could further help in the downscaling of electronics.
The work was led by Alexander A. Balandin, a professor of electrical engineering at the Bourns College of Engineering at the University of California, Riverside and Konstantin S. Novoselov, a professor of physics at the University of Manchester in the United Kingdom. Balandin and Novoselov are corresponding authors for the paper just published in the journal Nano Letters. In 2010, Novoselov shared the Nobel Prize in Physics with Andre Geim for their discovery of graphene.
In the experiments, the researchers found that adding a layer of graphene, a one-atom thick material with highly desirable electrical, thermal and mechanical properties, on each side of a copper film increased heat conducting properties up to 24 percent.
“This enhancement of copper’s ability to conduct heat could become important in the development of hybrid copper — graphene interconnects for electronic chips that continue to get smaller and smaller,” said Balandin, who in 2013 was awarded the MRS Medal from the Materials Research Society for discovery of unusual heat conduction properties of graphene.
Whether the heat conducting properties of copper would improve by layering it with graphene is an important question because copper is the material used for semiconductor interconnects in modern computer chips. Copper replaced aluminum because of its better electrical conductivity.
Downscaling the size of transistors and interconnects and increasing the number of transistors on computer chips has put an enormous strain on copper’s interconnect performance, to the point where there is little room for further improvement. For that reason there is a strong motivation to develop hybrid interconnect structures that can better conduct electrical current and heat.
In the experiments conducted by Balandin and the other researchers, they were surprised that the improvement of thermal properties of graphene coated copper films was significant despite the fact that graphene’s thickness is only one atom. The puzzle was solved after they realized the improvement is the result of changes in copper’s nano- and microstructure, not from graphene’s action as an additional heat conducting channel.
After examining the grain sizes in copper before and after adding graphene, the researcher found that chemical vapor deposition of graphene conducted at high temperature stimulates grain size growth in copper films. The larger grain sizes in copper coated with graphene results in better heat conduction.
Additionally, the researchers found that the heat conduction improvement by adding graphene was more pronounced in thinner copper films. This is significant because the enhancement should further improve as future copper interconnects scale down to the nanometers-range, which is 1/1000thof the micrometer range.
The Latest on: Graphene and copper
via Google News
The Latest on: Graphene and copper
- Graphite Miners News For The Month Of July 2022on July 28, 2022 at 2:18 am
Welcome to the July edition of the graphite miners news. Flake and spherical graphite prices were generally flat over the past month. Click here for a full overview.
- Graphene Nanocomposites Market Report 2022 In-Depth Market Analysis and Future Prospects Till 2027on July 25, 2022 at 7:39 pm
The MarketWatch News Department was not involved in the creation of this content. Jul 26, 2022 (Market Insight Reports) -- Graphene Nanocomposites Market (US, Europe, Asia-Pacific) 2022 research ...
- Expanding Catalyst Family for Electrocatalytic Reduction of CO2on July 22, 2022 at 1:15 pm
In a paper published in The Journal of Physical Chemistry C, a new kind of 2D nanoscale catalyst was developed by mounting clusters of copper on defective diamond graphene. Study: Anchoring Cu ...
- Buckyballs on gold are less exotic than grapheneon July 22, 2022 at 11:04 am
C60 molecules on a gold substrate appear more complex than their graphene counterparts, but have much more ordinary electronic properties. This is now shown by measurements with ARPES at BESSY II and ...
- Buckyballs on gold are less exotic than grapheneon July 21, 2022 at 1:06 pm
Graphene consists of carbon atoms that crosslink ... These signals come from the electrons deep in the substrate (gold or copper) and not the layer, which could be affected by the buckyballs ...
- Buckyballs on gold are less exotic than grapheneon July 21, 2022 at 9:40 am
or carbon monoxide molecules have been pushed into place on a copper surface piece by piece with a scanning tunneling microscope, where they could impart the characteristic graphene properties to ...
- Electric Royalties Provides Update on Royalty Portfolioon July 21, 2022 at 6:07 am
VANCOUVER, BC / ACCESSWIRE / July 21, 2022 / Electric Royalties Ltd. (TSXV:ELEC) (OTCQB:ELECF) (“Electric Royalties” or the “Company”) is pleased to provide an asset update on its current royalty ...
- Future of Graphene and MXenes in Flexible Electronics Comparedon July 21, 2022 at 12:06 am
A PCB is a thin panel constructed of poly-epoxides and glass fiber, covered with fine sheets of copper. However ... two-dimensional materials contains conductive materials like graphene, ...
- 3D Printing Circuitry With Graphene-Based Conductive Filamenton July 20, 2022 at 5:00 pm
Graphene 3D Lab's chief operating officer Elena Polyakova discussed ... It's a better heat conductor than all other materials, equal to copper in its electrical conductivity, stronger than diamond, ...
- Boron nitride synthesized with flashy new methodon July 20, 2022 at 2:03 am
Scientists at Rice University who ‘flash’ materials to synthesize substances like graphene have turned their attention to boron nitride, highly valued for its thermal and chemical stability. The ...
via Bing News