sebastien rochat
@sebrochat
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Senior lecturer in Data Science and Materials Discovery @BristolUni. Swiss in the UK, science, gin and sports enthusiast. Previously @epfl, @mit and @UniofBath.
Bristol, UK
Joined November 2011
Looks like it's a good time to dig this one out... #NobelPrize #MOFs
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The fibres are "immersed" in a polymer matrix and the cracks typically appear at the polymer/fibre interface. I'm endlessly fascinated by the ability we have to see matter evolving at such a small scale - truly a microscopy tour de force.
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And this shows one of the timelapse images from the paper - can you see the tiny cracks forming as the temperature goes down? The circles on the image are cross-sections of carbon fibres, of diameter of around 5 micrometers - that's smaller than human hairs!
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The work was led by Prof. @i_hamerton in collaboration with Dr Ram Ramakrishnan and collaborators at Bristol, @imperialcollege, and @NCCUKinfo .
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I'm very happy to have been part of this project now published in 'Investigating the microcracking behaviour of a commercial epoxy matrix under cryogenic conditions' in Composites Part A: Applied Science and Manufacturing ( https://t.co/x07K66AsA6).
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Here @BristolUni and @UoBrisComposite PhD student James Griffith developed an imaging method based on cryo-scanning electron microscopy, to watch these cracks form in real time as the composite was cooled.
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Understanding how and why tiny cracks form in composite materials will help engineers improve cryogenic composite designs—making them safer and more reliable for future applications in cold environments, such as in the growing fields of sustainable aviation and hydrogen storage.
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“Let’s raise our fondue forks in unity.” Is the best lyric tonight.
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Best part of #Eurovision2025 is clearly the images of Swiss regions between songs. 🇨🇭
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Abstracts open for the 2nd conference on Engineering Porous Materials at Multiple Scales, 17-18 Sept 2025, in Bath. Covering a broad range of topics that reflect the different scales of study, use, and porosity in porous materials research. https://t.co/PUogS5IdNh
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Our just published work from @UoBrisComposite @BristolUni on emerging application for #MOF #composites. Truly collaborative work by @Bhomick15 @EvdokiyaHI01 @LilaAMahmoud @HuanDoanV Lui R Terry @JemmaRowlandson @ProfValeskaTing @sebrochat @MattAddicoat
https://t.co/oVunBc526j
pubs.acs.org
Sustainable agriculture will play a key role in ensuring food security for the rising global population. Controlled and precision delivery of agrochemicals, such as herbicides and pesticides, plays a...
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This work led by talented PhD student Stella (Yuxing) Wang at @bristolchem shows that polymers of intrinsic microporosity, known for uses in separation processes or water purification, are also excellent at absorbing light, which will make them useful in many new applications.
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🚨New paper alert!🚨 Check it out for a new applications of polymers of intrinsic microporosity (PIMs) in light harvesting! Very proud as this is one of the first projects I started when I joined @BristolChem and @BristolEngMaths a couple of years ago.
advanced.onlinelibrary.wiley.com
The first use of a polymer of intrinsic microporosity (PIM-1) is demonstrated as a light absorber in a luminescent solar concentrator (LSC). Combined with a red dye emitter, PIM-1 acts as an antenna...
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Really nice to see colleagues work on advanced composites highlighted - materials were just shipped to space for testing under extreme conditions!
Space materials developed by our researchers have landed on the @Space_Station for testing 🛰️🔭 The "next generation" materials could be used to build future space bases or spacecraft 🚀 @BristolUniEng @UoBrisComposite @i_hamerton
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We show how light 🔦can be used to pattern mechanical information ℹ️ in soft materials by triggering chemical transformations. There is polymer synthesis ⚗️, mechanical analyses 🛠️ and even actuation🔛 - what's not to like? Very well done to all involved! 😀
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Very, very happy to see this paper out🎇! Thanks to enormous efforts 💪 by lead author @JustinJHPark, @PatrickGrimes37 (both @BristolChem ) and colleagues and friends in Italy (@GobboGroup ) and Canada (@WorkentinChem ).
advanced.onlinelibrary.wiley.com
In this work, the syntheses of two photo-sensitive and thermoresponsive hydrogel systems, a photo-stiffening and a photo-softening hydrogel, are reported. Their potential for fabricating soft...
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Dr Grimes is in the house! Congratulations to @PatrickGrimes37 for successfully passing his PhD viva today! Thanks to our examiners @Swifthom from @UniofBradford and Sean Davis from @BristolChem. Patrick was co-supervised with @GobboGroup @UniTrieste. Well done Patrick!
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We are very pleased to be recruiting for academics to join Bristol Chemistry. If you are passionate about your research and love teaching please apply:
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OK, so we are hiring! -Have you got skills in making/testing materials and would you like to get paid really well to put them to good use? -Do you like ☀️ and want to check out Australia? Join us as a Research Fellow to help develop H2 storage materials at the ANU!
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What should you call your academic event? Another great flowchart from PhD Comics.
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