Researchers at Chalmers University of Technology have developed a method for efficiently cooling electronics using graphene-based film. The film has a thermal conductivity capacity that is four times that of copper. Moreover, the graphene film is attachable to electronic components made of silicon, which favours the film’s performance compared to typical graphene characteristics shown in previous, similar experiments.
Electronic systems available today accumulate a great deal of heat, mostly due to the ever-increasing demand on functionality. Getting rid of excess heat in efficient ways is imperative to prolonging electronic lifespan, and would also lead to a considerable reduction in energy usage. According to an American study, approximately half the energy required to run computer servers, is used for cooling purposes alone.
A couple of years ago, a research team led by Johan Liu, professor at Chalmers University of Technology, were the first to show that graphene can have a cooling effect on silicon-based electronics. That was the starting point for researchers conducting research on the cooling of silicon-based electronics using graphene.
“But the methods that have been in place so far have presented the researchers with problems”, Johan Liu says. “It has become evident that those methods cannot be used to rid electronic devices off great amounts of heat, because they have consisted only of a few layers of thermal conductive atoms. When you try to add more layers of graphene, another problem arises, a problem with adhesiveness. After having increased the amount of layers, the graphene no longer will adhere to the surface, since the adhesion is held together only by weak van der Waals bonds.”
“We have now solved this problem by managing to create strong covalent bonds between the graphene film and the surface, which is an electronic component made of silicon,” he continues.
The stronger bonds result from so-called functionalisation of the graphene, i.e. the addition of a property-altering molecule. Having tested several different additives, the Chalmers researchers concluded that an addition of (3-Aminopropyl) triethoxysilane (APTES) molecules has the most desired effect. When heated and put through hydrolysis, it creates so-called silane bonds between the graphene and the electronic component (see picture).
Moreover, functionalisation using silane coupling doubles the thermal conductivity of the graphene. The researchers have shown that the in-plane thermal conductivity of the graphene-based film, with 20 micrometer thickness, can reach a thermal conductivity value of 1600 W/mK, which is four times that of copper.
“Increased thermal capacity could lead to several new applications for graphene,” says Johan Liu. “One example is the integration of graphene-based film into microelectronic devices and systems, such as highly efficient Light Emitting Diodes (LEDs), lasers and radio frequency components for cooling purposes. Graphene-based film could also pave the way for faster, smaller, more energy efficient, sustainable high power electronics.”
Read more: Graphene-based film can be used for efficient cooling of electronics
The Latest on: Graphene-based film
[google_news title=”” keyword=”graphene-based film” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Graphene-based film
- Graphene Electronics Market (CAGR) of 47.6%, Beyond the Horizon Mastering Observational Research with Uncharted Territory Techniqueson March 26, 2024 at 9:41 pm
The Graphene Electronics Market is projected to soar to an estimated value of $797 million by 2024, indicating a staggering Compound Annual Growth Rate (CAGR) of 47.6% from 2016 to 2024. This meteoric ...
- Weird new electron behaviour in stacked graphene thrills physicistson March 26, 2024 at 5:00 pm
This 2D material is only the second to exhibit the fractional quantum anomalous Hall effect, and theorists are still debating how it works.
- Mighty MXenes are ready for launchon March 24, 2024 at 10:18 pm
Nearly 15 years after their discovery, the 2D materials are close to market. But will they find their killer app?
- Revolutionary Graphene Interfaces Set to Transform Neuroscienceon March 14, 2024 at 8:29 pm
Groundbreaking graphene neurotechnology developed by ICN2 and collaborators promises transformative advances in neuroscience and medical applications, demonstrating high-precision neural interfaces ...
- Graphene - where is our promised wonder material?on February 29, 2024 at 3:44 pm
Huawei’s latest smartphones, for example, have adopted graphene-based thermal films and the British company Graphene Lighting is producing LED lights using graphene as a thermal dissipation ...
- Graphene - where is our promised wonder material?on February 28, 2024 at 3:59 pm
it can be a great material for producing heat sinks or heat dissipation films. Huawei’s latest smartphones, for example, have adopted graphene-based thermal films and the British company Graphene ...
- Graphene-Based Transistors Receive R&D and Mass-Media Attentionon February 28, 2024 at 6:56 am
Why carbon-derived graphene is attracting ... This solution-based process allows for the scalable preparation of amorphous carbon films with thickness down to 1-2 atomic layers covering 3-in.
- Graphene-based implantable technology paves way for high-precision therapeutic applicationson January 11, 2024 at 8:43 am
More information: Damià Viana et al, Nanoporous graphene-based thin-film microelectrodes for in vivo high-resolution neural recording and stimulation, Nature Nanotechnology (2024). DOI ...
- Ultrasensitive molecular sensing with synthesize complex-frequency waveson January 8, 2024 at 9:52 am
SEIRA was first demonstrated using Ag and Au thin films. Still, the advancement ... Dirac fermion electronic states enables graphene-based SEIRA with excellent performance in molecular ...
- Global Graphene Companies – Manufacturers and Supplierson June 29, 2022 at 4:59 am
The company design and manufactures various graphene-based products such as its patented graphene heating film, including graphene powder coatings. Graphene 3D Labs, Inc. is focused on the development ...
via Bing News