Penn State team applies 'magic angle' graphene to acoustics

A team of Penn State researchers has designed an acoustic equivalent of magic-angle bilayer graphene. Two graphene sheets stacked on top of each other, called bilayer graphene, exhibit unique properties when one of the layers is twisted at a certain angle — a “magic” angle. The study of magic and other angle misalignments between two layers of material and their effects on material properties has been dubbed twistronics, a rapidly expanding field of condensed matter physics.

A visualization of the acoustic graphene array imageA visualization of the acoustic graphene array. Image by PSU

“Examining analogues of condensed matter physics concepts can give us new ideas and applications in acoustics,” said Yun Jing, associate professor of acoustics and biomedical engineering.

New graphene-enhanced products raise old questions

When speaking of graphene in terms of commercialization, the general impression is that "a killer application has not yet been found". While this is not a false concept, it does not do justice with the now-budding graphene world. It can easily be stated that many graphene applications are being developed. This has been true for years, but various commercial products are starting to pop up, hopefully heralding the beginning of a more steady stream of commercialization.

Huawei Mate P30 Pro photo

Among these applications, one can point to cooling technology like Cryorig's CPU cooling system or Huawei's Mate 30 X smartphone, which sports a graphene film cooling technology. Various footwear and sports equipment products have also been launched, along with more technical products like oil additives and coatings. The list goes on and on, and there are even graphene-enhanced sanitary napkins on the market!

Abalonyx reports strong revenue growth in 2018

Norway-based Graphene Oxide developer Abalonyx reports that its graphene oxide sales have increased by about 80 % in 2018, and this follows a 70% increase in 2017 compared to 2016. The company expects to see further strong sales growth in 2019.

Graphene Oxide production cost estimate (Sep 2018, Abalonyx)Abalonyx says that over 90% of its sales derive from returning industrial partners. The company also revealed two of these customers: ORA Graphene Audio with its GO membranes and Provexa AB which developed an anti-corrosion protection coating that is now being used on Scania trucks.

MediaDevil launches graphene-enhanced earphones

MediaDevil, a UK-based maker of various phone, laptop and tablet accessories, is selling the Artisanphonics CB-01 Earphones - Noise-isolating Premium Wood Earphones with Nanene Graphene-Enhanced Audio.

MediaDevil Nanene-enhanced earphones image

These earphones, enhanced with Versarien's Nanene material, reportedly sport an earphone diaphragm that is thinner and more flexible than traditional materials can allow. MediaDevil says that independent testing conducted by a leading British premium audio company found that, remarkably, Nanene enhances both the high-end (treble) and the low-end (bass) of the audio frequency wave.