A new method of manufacturing glass could lead to the production of ‘designer glasses’ with applications in advanced photonics, whilst also facilitating industrial scale carbon capture and storage.
An international team of researchers, writing today in the journal Nature Communications, report how they have managed to use a relatively new family of sponge-like porous materials to develop new hybrid glasses.
We now should be able to manufacture a variety of shapes and structures that were previously impossible
The work revolves around a family of compounds called metal-organic frameworks (MOFs), which are cage-like structures consisting of metal ions, linked by organic bonds. Their porous properties have led to proposed application in carbon capture, hydrogen storage and toxic gas separations, due to their ability to selectively adsorb and store pre-selected target molecules, much like a building a sieve which discriminates not only on size, but also chemical identity.
However, since their discovery a quarter of a century ago, their potential for large-scale industrial use has been limited due to difficulties in producing linings, thin films, fibrous or other ‘shaped’ structures from the powders produced by chemical synthesis. Such limitations arise from the relatively poor thermal and mechanical properties of MOFs compared to materials such as ceramics or metals, and have in the past resulted in structural collapse during post-processing techniques such as sintering or melt-casting.
Now, a team of researchers from Europe, China and Japan has discovered that careful MOF selection and heating under argon appears to raise their decomposition temperature just enough to allow melting, rather than the powders breaking down. The liquids formed have the potential to be shaped, cast and recrystallised, to enable solid structures with uses in gas separation and storage.
Dr Thomas Bennett from the Department of Materials Science and Metallurgy at the University of Cambridge says: “Traditional methods used in melt-casting of metals or sintering of ceramics cause the structural collapse of MOFs due to the structures thermally degrading at low temperatures. Through exploring the interface between melting, recrystallisation and thermal decomposition, we now should be able to manufacture a variety of shapes and structures that were previously impossible, making applications for MOFs more industrially relevant”.
Equally importantly, say the researchers, the glasses that can be produced by cooling the liquids quickly are themselves a new category of materials. Further tailoring of the chemical functionalities may be possible by utilising the ease with which different elements can be incorporated into MOFs before melting and cooling.
Professor Yuanzheng Yue from Aalborg University adds: “A second facet to the work is in the glasses themselves, which appear distinct from existing categories. The formation of glasses that contain highly interchangeable metal and organic components, in is highly unusual, as they are normally either purely organic, for example in solar cell conducting polymers, or entirely inorganic, such as oxide or metallic glasses. Understanding the mechanism of hybrid glass formation will also greatly contribute to our knowledge of glass formers in general.”
Using the advanced capabilities at the UK’s synchrotron, Diamond Light Source, the team were able to scrutinise the metal organic frameworks in atomic detail. Professor Trevor Rayment, Physical Science Director at Diamond, comments: “This work is an exciting example of how work with synchrotron radiation which deepens our fundamental understanding of the properties of glasses also produces tantalising prospects of practical applications of new materials. This work could have a lasting impact on both frontiers of knowledge.”
The researchers believe the new technique could open up the possibility of the production of ‘chemically designed’ glasses whereby different metals or organics are swapped into, or out of, the MOFs before melting.
The Latest on: Hybrid glasses
[google_news title=”” keyword=”Hybrid glasses” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Hybrid glasses
- AI is at the Forefront in Oppo’s Air Glass 3on March 1, 2024 at 10:07 pm
Ahead of MWC, Oppo also announced the establishment of the Oppo AI Center, which is a new hub designed to better focus the company’s resources towards R&D in AI and drive cutting-edge, user-centric ...
- smart glasseson February 29, 2024 at 4:00 pm
Commercial offerings, from Google’s Glass to the Microsoft HoloLens and Magic Leap 2 are largely targeting medical and aerospace customers, and have price tags to match. On the hobbyist side of ...
- '9H hardness' is meaningless for glass screen protectorson February 29, 2024 at 10:35 am
Contrary to popular belief, 9H glass hardness has nothing to do with the Mohs mineral scale — here's how to pick an actually good screen protector ...
- 2024 Toyota Crown Limited First Test: Why This Is Toyota’s Strangest Hybridon February 29, 2024 at 4:00 am
If you’re looking for Toyota’s best hybrid, the quirky Crown doesn’t make a lot of sense compared to the Camry or Prius. Here’s why.
- 10 Best Glow Recipe Products for Gleaming, Glass-Like Skin (Tested and Reviewed in 2024)on February 28, 2024 at 3:59 pm
The skincare powerhouse has become one of the most popular—and most viral—brands in the U.S., and inside the brightly colored containers are clinically tested, fruit-forward potions that deliver a ...
- We Asked, Experts Answered—7 Ways to Level Up Your Makeup Game With Glasseson February 28, 2024 at 12:00 am
As a glasses-wearing beauty editor, I've heard one too many times that wearing glasses makes doing makeup difficult. Feeling discouraged from playing with eye makeup while sporting frames isn't a new ...
- The Zoma Hybrid mattress is a cheat code for sleep recoveryon February 27, 2024 at 4:00 pm
Zoma’s Hybrid mattress has, genuinely ... But in the vein of things like glasses, shoes, cars or other proportionally expensive items, the sheer amount of use that you get from a mattress makes it ...
- Best places to buy prescription glasses online (and save money)on February 27, 2024 at 12:58 pm
Even if you have insurance, prescription eyewear and contacts can be spendy. By shopping for glasses online, you can choose from a huge selection of quality -- even designer -- frames and have ...
- Skia Superyacht Concept Is Envisioned With a Svelte Profile and Giant Cascading Glass Poolon February 27, 2024 at 6:12 am
Guests can enjoy those views from a giant cascading glass pool. The beach club is a relaxing area ... it is likely to come with hybrid or fully green propulsion.
- OPPO Air Glass 3 smart glasses unveiled at MWC 2024on February 27, 2024 at 1:27 am
OPPO Air Glass 3 can access OPPO’s AndesGPT model via a smartphone, providing a new AI experience. Ahead of the event, OPPO also announced the establishment of the OPPO AI Center and released the OPPO ...
via Bing News